DOWNLOAD PDF Epson Terminal Printer EPL-5500 Service Manual

EPSON TERMINAL PRINTER

EPL-5500

SERVICE MANUAL

EPSON 4005431

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NOTICE All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKO EPSON’s express written permission is forbidden.

The contents of this manual are subjects to change without notice.

All efforts have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.

The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this manual or the consequence thereof.

Epson is a registered trademark of Seiko Epson Corporation.

General Notice: Other product names used herein are for identication purposes only and may be trademarks of their respective campanies.

Copyright © 1995 by SEIKO EPSON CORPORATION Nagano, Japan

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PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal injury and 2) damage to equipment.

DANGER

Signals a precaution which, if ignored, could result in serious or fatal personal injury.

Great caution should be exercised in performing procedures preceded by DANGER Headings.

WARNING Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/ maintenance procedures.

DANGER 1.

ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE.

2.

NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3.

WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNING 1.

REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.

2.

MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3.

ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4.

IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5.

REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

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SAFETY INFORMATION This printer is a page printer which operates by means of a laser. There is no possibility of danger from the laser, provided the printer is operated according to the instructions in this manual provided.

Since radiation emitted by the laser is completely confined within protective housings, the laser beam cannot escape from the machine during any phase of user operation.

For United States Users; [Laser Safety] This printer is certified as a Class 1 Laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation.

[CDRH Regulations] The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products on August 2, 1976. Compliance is mandatory for products marketed in the United States. The label shown below indicates compliance with the CDRH regulations and must be attached to laser products marketed in the United States.

WARNING : Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.

[Internal Laser Radiation] Maximum Radiation Power: Wave Length:

5.0 × 10-4 (W) 790 ± 20 nm

This is a Class IIIb Laser Diode Assay that has an invisible laser beam. The print head unit is NOT A FIELD SERVICE ITEM. Therefore, the print head unit should not be opened under any circumstances.

For Other Countries Users; WARNING: Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.

This is a semiconductor laser. The maximum power of the laser diode is 5.0 × 10-4 W and the wavelength is 790 ± 20 nm.

For Denmark Users; ADVARSEL Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.

Undgå udsættelse for stråling.

Klasse 1 laser produkt der opfylder IEC825 sikkerheds kravene.

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For Finland, Sweden Users; VAROITUS Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteiylle.

VARNING Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laser klass 1.

For Finland, Sweden Service People VAROITUS Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.

VARNING Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad.

Betrakta ej strålen.

For Norway Users; ADVARSEL Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan brukeren utsettes for unsynlig laserstråling som overskrider grensen for laser klasse 1.

Dette er en halvleder laser. Maksimal effeckt til laserdiode er 5.0 × 10-4 W og bølgelengde er 790 ± 20 nm.

Laser Safety Labels [Label on rear printer case] A laser safety labels is attached on the outside of the printer shown below.

For United State

- iv -

For Europe

[Label inside printer] The following laser safety label will be attached inside the printer as shown below.

For Denmark, Finland, Sweden, and Norway

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PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of EPL-5500.

The instructions and procedures included herein are intended for the experience repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows:

CHAPTER 1. GENERAL DESCRIPTION Provides a general product overview, lists specifications, and illustrates the main components of the printer.

CHAPTER 2. OPERATING PRINCIPLES Describes the theory of printer operation.

CHAPTER 3. DISASSEMBLY AND ASSEMBLY Includes a step-by-step guide for product disassembly and assembly.

CHAPTER 4. ADJUSTMENTS Includes a step-by-step guide for adjustment.

CHAPTER 5. TROUBLESHOOTING Provides Epson-approved techniques for adjustment.

CHAPTER 6. MAINTENANCE Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.

APPENDIX Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.

The contents of this manual are subject to change without notice.

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REVISION SHEET Revision

Issue Date

Revision Page

Rev. A

October 06, 1995

1st issue Revise the whole pages of the following chapters:

Rev. B

March 15, 1996

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Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6

Chapter 1

General Description

Table of Contents 1.1 FEATURES

1-1

1.2 SPECIFICATIONS 1-3 1.2.1 Basic Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2.3 Reliability Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2.4 Environmental Conditions for Operating (Include Imaging Cartridge) . . . . 1-5 1.2.5 Environmental Conditions for Storage and Transportation . . . . . . . . . . . . 1-5 1.2.6 Applicable Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 1.2.7 Specifications for Consumable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 1.2.8 Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 1.2.9 Software Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 1.3 INTERFACE SPECIFICATIONS 1-9 1.3.1 Parallel Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 1.3.1.1 Compatibility Mode of Parallel Interface . . . . . . . . . . . . . . . . . . . . 1-9 1.3.1.2 Reverse ModeMode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . 1-11 1.3.2 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 1.3.3 Optional LocalTalk Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 1.4 OPERATING INSTRUCTIONS 1-18 1.4.1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18 1.4.2 Printer Settings Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 1.4.3 Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1.4.3.1 Heaxadecimal Dump Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1.4.3.2 EEPROM Initialize Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1.4.3.3 Factory Reset Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 1.4.3.4 Default Setting Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 1.4.4 Display of Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 1.4.4.1 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 1.4.4.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 1.4.4.3 Service Call Error Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 1.4.5 Printer Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 1.4.5.1 Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 1.4.5.2 Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 1.4.6 Emulation Mode Switch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 1.4.6.1 Emulation Switch by SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 1.4.6.2 Intelligent Emulation Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 1.4.7 Bi Resolution Improvement Technology . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 1.4.8 Toner Save Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 1.4.9 Optional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 1.5 MAIN COMPONENTS 1-32 1.5.1 C169 MAIN-B Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 1.5.2 PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34 1.5.3 PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34 1.5.4 Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35 1.5.5 FUSING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35 1.5.6 Photoconductor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

1.5.7 Developing Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36 1.5.8 Lower Paper Cassette Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

List of Figures Figure 1-1. Exterior View of the EPL-5500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Figure 1-2. Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Figure 1-3. Compatibility Mode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 Figure 1-4. Parallel Interface State Switch Diagram . . . . . . . . . . . . . . . . . . . . . 1-12 Figure 1-5. Negotiation Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 Figure 1-6. Timing Chart of Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 Figure 1-7. Termination Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 Figure 1-8. Timing Chart of Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 Figure 1-9. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18 Figure 1-10. Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 Figure 1-11. Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 Figure 1-12. Emulation Switch by SPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 Figure 1-13. Intelligent Emulation Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 Figure 1-14. Effect of RITech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 Figure 1-15. RITech Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 Figure 1-16. Toner Save Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 Figure 1-17. Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 Figure 1-18. C169 MAIN-B Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 Figure 1-19. PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34 Figure 1-20. PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34 Figure 1-21. Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35 Figure 1-22. Fusing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35 Figure 1-23. Photoconductor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36 Figure 1-24. Developing Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

List of Tables Table 1-1. Options for the EPL-5500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Table 1-2. Paper Feed Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-3. Paper Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Table 1-4. Usability of Special Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Table 1-5. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4 Emulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Table 1-7. Built-in Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Table 1-8. Parallel Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 Table 1-9. Parallel Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 Table 1-10. Serial Interface Connector Pin Assignments . . . . . . . . . . . . . . . . . 1-15 Table 1-11. LocalTalk Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . 1-17 Table 1-12. Printer Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 Table 1-13. Service MOde Select Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 Table 1-14. Default Settings Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 Table 1-15. Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 Table 1-16. Differences in Components for the C169 MAIN-B Board . . . . . . . 1-33

Rev. A

1-iii

EPL-5500 Service Manual

General Description

1.1 FEATURES The EPSON EPL-5500 is non-impact page printer that combines a semi-conductor laser with electrophotographic technology. This printer is small and light, and features high-speed, high-resolution printing. Maintenance is very easy as a result of various built-in diagnostic functions.

The main features are: ❏

No ozone

❏

Printing speed — 6 ppm (pages per minute)

❏

Resolution — 600/300 dpi (dots per inch)

❏

Light weight — about 5 kg (11 lb)

❏

Small footprint

❏

Low running cost: separation of the development/toner cartridge and photoconductor unit

❏

HP LaserJet 4 emulation mode

❏

22 built-in scalable fonts (8 Agfa and 14 TrueType fonts)

❏

High-performance controller (the controller’s CPU is a 22.5 MHz SPARKlite (MB86933H))

❏

Bi Resolution Improvement Technology (BiRITech) refines the print quality by eliminating jagged edges from images and characters on 600 dpi and 300 dpi printing

❏

Memory Improvement Technology supported

❏

Optional EPSONScript Level 2 (PostScript compatible) module

❏

Optional WPS (Windows Printing System) ROM SIMM module

❏

Optional I239X, ESC/P 2 , and FX emulation ROM SIMM module

❏

EPSON Micro Gray Technology (EMGTech), which is available when using PCL and EPSONScript Level 2 mode, refines gray scale printing to be comparable to printing on a 1200-dpi printer

❏

Small and low-cost optional LocalTalk with serial interface module

❏

1MB standard RAM and memory expansion available up to 32MB of RAM with the addition of optional SIMMs

❏

Bidirectional parallel interface

❏

Toner-saver mode supported

❏

A multi-user, multi-emulation mode

❏

IES (Intelligent Emulation Switch) allows switching between EPSONScript mode and another mode

❏

SPL (Shared Printer Language) enables switching of the printer mode by command

Figure 1-1 shows an exterior view of the EPL-5500.

Figure 1-1. Exterior View of the EPL-5500 Rev. B

1-1

General Description

EPL-5500 Service Manual

Table 1-1 lists the optional units available for the EPL-5500.

Table 1-1. Options for the EPL-5500 Cat. No.

Description

C83218✽ Windows Printing System ROM SIMM

— — C812491

Supports Windows Printing System

EPSONScript Level 2 ROM SIMM

Supports EPSONScript Level 2 mode (PostScript Level 2 compatible) fonts and commands (see Note 1)

LQ/FX/I239X ROM SIMM

Supports ESC/P 2, FX, 2390/2391 emulation modes

NLSP Bitmap 2 font ROM

Supports local NLSP bitmap fonts (see Note 2)

NLSP Scalable font ROM

Supports local NLSP scalable fonts (see Note 2)

C83219✽

C83220✽

Note

and

IBM

250-sheet lower paper cassette for theLower paper cassette EPL-5500 (A4/B5)

S050005 Developer cartridge

Developer and toner cartridge

S051029 Photoconductor unit

—

C82334✽ LocalTalk with serial I/F module

(see Note 3)

C83614✽ Interface cable

RS-232C extension cable for C82334✽

C82335✽ Type-B EX box

Type-B I/F card box (see Note 4)

C82307✽/ 32 KB serial interface card C82308✽ C82310✽/ 32 KB parallel interface card C82311✽

(see Note 5)

C82312✽ LocalTalk card

(see Note 5)

C82313✽ GPIB card

(see Note 5)

C82314✽ COAX interface card

(see Note 5)

C82315✽ TWINAX interface card

(see Note 5)

C82324✽ Ethernet interface card for NetWare

(see Note 5)

C82328✽ FAX card

(see Note 5)

C82331✽ Multi protocol Ethernet card

(see Note 5)

(see Note 5)

Notes: 1.

Requires added memory (RAM) over a total of 2 MB, including standard RAM.

2.

NLSP font ROMs do not support ESC/P 2 and FX modes.

3.

LocalTalk with serial I/F module (C82334✽) cannot be used with Type-B EX box (C82335✽).

4.

Type-B EX box (C82335✽) cannot be used with LocalTalk with serial I/F module (C82334✽) .

5.

Type-B EX box (C82335✽) must be installed while using the Type-B I/F card.

1-2

Rev. B

EPL-5500 Service Manual

General Description

1.2 SPECIFICATIONS This section provides statistical data for the EPL-5500.

1.2.1 Basic Specifications Printing method:

Laser beam scanning and dry electrophotography

Resolution:

600/300 dpi

Printing speed:

6 ppm (letter/A4)

First printing time (A4/LT):

Less than 20 seconds (face-up output)

Warm-up time:

Less than 35 seconds (at rated current and 23° C (73° F) temperature)

Paper supply:

See Table 1-2.

Table 1-2. Paper Feed Methods Capacity Using 20 lb. (75 g/m2) Paper

Paper Supply

Standard built-in paper tray

Paper Size

Usage Thickness (Ream Weight)

150

A5, B5, A4, LT,16 to 24 lb.

GLT, EXE, LGL,(60 to 90 g/m2) GLG, F4, HL

5 to 10

Monarch, Envelopes made DL, C5, C6, of 20 to 24 lb.

International B5, (75 to 90 g/m2) Commercial-10 paper

Manual feed slot

1

Any size feedable (Note 2)

16 to 42 lb.

(60 to 157 g/m2)

Lower paper cassette (optional)

250

A4, B5

16 to 24 lb.

(60 to 90 g/m2)

Notes: 1.

The weight in pounds (lb) is determined by the weight of 500 sheets cut to 17 × 22 inches; 1 g/m2 = 0.2659763 lb.

2.

Paper size range:

Paper types:

width length

3 to 8.5 inches (76 to 216 mm) 5 to 14.0 inches (127 to 356 mm) See Table 1-3.

Table 1-3. Paper Types

Rev. B

1-3

General Description

EPL-5500 Service Manual

Standard paper

Xerox 4024 DP paper 20 lb (75 g/m2)

Normal paper

Regular photocopier paper Bond paper Recycled paper 16 to 24 lb (60 to 90 g/m2)

Special papers

Card stock (90 to 157 g/m2) Envelopes Labels Letterhead Transparency (OHP) sheets Colored paper

4.0 mm

Printable Area

4.0 mm

4.0 mm

4.0 mm

Figure 1-2. Printable Area

1-4

Rev. B

EPL-5500 Service Manual

General Description

Usability of special papers:

See Table 1-4.

Table 1-4. Usability of Special Papers Input

OHP

Envelopes

Labels

Card Stock

Letterhead

Standard built-in paper tray

P

P

P

P

R

Manual feed slot

P

P

P

P

R

Lower paper cassette

N

N

N

N

P

R: Reliable feeding and good image quality.

P: Possible, but better avoided.

N: Not supported.

Paper feed alignment and direction:

Center alignment for all sizes

Paper ejection:

Face down

Output tray capacity:

100 sheets (face down)

Printable area (standard paper):

See Figure 1-2.

Note:

The actual printable area depends on the printer mode.

Noise:

Less than 35 dB(A), standby Less than 47 dB(A), operating

Ozone density:

Less than 0.01 ppm

Toxicity:

No toxicity exists in organic photoconductor (OPC), toner, or plastic materials

Rev. B

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General Description

EPL-5500 Service Manual

1.2.2 Electrical Specifications Table 1-5. Electrical Requirements and Ranges Description

100 V Version

200 V Version

Rated voltage

100 ∼ 120 VAC

220 ∼ 240 VAC

Input voltage range

90 ∼ 132 VAC

198 ∼ 264 VAC

Rated frequency range

50 ∼ 60 Hz

Input frequency range

47 ∼ 63 Hz

Power consumption

Less than 500 W

Power consumption while in standby mode

Less than 600 W Less than 15 W (without option)

1.2.3 Reliability Specifications MPBF (Mean Prints Between Failures): Over 25,000 sheets Note:

MPBF indicates average number of pages printed before occurrence of problem requiring replacement or service.

MTBF (Mean Time Between Failures): Jam rate: Feed failure: Multiple paper feeds: Paper curl height: Leading edge bending (1 cm or more): MTTR (Mean Time To Repair): Durability:

3000 power on hours (POH) 1 out of 2,000 sheets or less (excluding multiple-sheet feeding) 1 out of 2,000 sheets or less (excluding multiple-sheet feeding) 1 out of 500 sheets or less 30 mm (1.2 inches) or less 1 out of 1,000 sheets 30 minutes or less 5 years or 180,000 sheets

1.2.4 Environmental Conditions for Operation (Including Imaging Cartridge) Temperature:

10 to 35° C (50 to 95° F)

Humidity:

15 to 85% RH

Altitude:

2,500 m (8,200 feet) or lower

Levelness:

1°

Illuminance:

3,000 lux or less (Must not be exposed to direct sunlight.)

Surrounding space:

Printer should have at least 100 mm of clearance on its sides and rear.

1.2.5 Environmental Conditions for Storage and Transportation Temperature:

0 to 35° C (32 to 95° F)

Humidity:

30 to 85% RH

Drop test:

Clear to JIS Z0200-1987 Level 1

Vibration:

Vibration frequency Acceleration Acceleration direction

Resistance to atmospheric pressure:

More than 61.3 KPa

Storage life:

18 months (following date of manufacture)

1-6

5 to 100 Hz and 100 to 5 Hz 1G 3 direction

Rev. B

EPL-5500 Service Manual

General Description

1.2.6 Applicable Standards Safety Standards 120 VAC model: 220/240 VAC model:

UL 1950, CSA 22.2 No. 950 Deviation 3 EN 60950 (IEC950), NEMKO (IEC950), SETI (IEC950), SEMKO (IEC950), DEMKO (IEC950)

Safety Regulations (Laser Radiation) 120 VAC model: 220/240 VAC model:

FDA (NCDRH) Class 1 VDE 0837 (Laser Class 1) (IEC825), SETI (IEC825), SEMKO (IEC825), DEMKO (IEC825)

EMI 120 VAC model: 220/240 VAC model:

FCC Part 15 Subpart B Class B, DOC Class B Vfg 243 (VDE 0878 Part 3,30) EN55022 Class B (CISPR Pub.22 Class B) CE marking, EMC

Others Toner: OPC: Ozone: Materials:

No effect on human health (OSHA-TSCA, EINECS) No effect on human health (OSHA) Less than 0.01 mmp other UL478 (5th edition) SWISS environmental law (must contain no CdS)

1.2.7 Specifications for Consumables Life: Note:

Developer and toner cartridge: 3,000 pages Photoconductor unit: 20,000 pages In continuous printing mode with A4/letter paper at a 5% image ratio (black/white ratio).

The life varies, depending on the printing mode (continuous or intermittent) and/or the image ratio.

Environmental Conditions for Storage and Transportation Temperature:

0 to 35° C (32 to 95° F)

Humidity:

30 to 85% RH

Drop test: Vibration: Resistance to atmospheric pressure: Storage term:

Height 76 cm (30.4 inches) Same as printer More than 74 Kpa 18 months (following date of manufacture)

1.2.8 Physical Specifications Dimensions (Width × Depth × Height): Printer: Weight:

352 × 264 × 299 mm (13.9 × 10.4 × 11.8 inches) Approx. 5 kg (11 lb), with consumables, excluding all options

Rev. B

1-7

EPL-5500 Service Manual

General Description

1.2.9 Software Specifications

HP LaserJet 4 emulation (PCL 5e) EPSON GL/2 mode (GL-like mode) EPSON GL/2 mode is similar to the GL/2 mode included in the HP LaserJet 4 emulation.

Table 1-6 shows the differences between EPSON GL/2 mode and the LJ4 GL/2 mode.

While in EPSON GL/2 mode, the operator can enter GL/2 mode without sending the ESC %#B (Enter GL/2 mode) command. If the operator’s application software cannot send the ESC %# B command, then use this mode.

Built-in modes: Note:

Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4 Emulation EPSON GL/2 Mode PCL mode Paper eject Auto eject Reduced printing Switch to PCL (ESC %#A) Reset (ESC E)

Not available Supports PG, AF commands SelecType setting SelecType setting Not supported

GL/2 for HP LaserJet 4 Emulation Mode Initial mode Supported in PCL Not available Available in PCL Supported

Ejects paper and then initializes Ejects paper, switches to PCL, and then initializes Supported Supported Supported Not supported

PJL, EJL, and ES Advance full page (PG, AF) The EPL-5500 GL/2 mode features all the commands of the LJ4-GL/2 mode, plus a few Note: additional commands. The GL/2 mode emulates some of the HP-GL plotter (HP 7475A, etc.) commands. If the application software uses unsupported commands for the GL/2 mode, print cannot be assured.

Optional modes: EPSONScript Level 2 (PostScript Level 2 emulation) mode FX (FX-870/1170, LX-100) emulation mode ESC/P 2 (Stylus 800/1000) emulation mode WPS (Windows Printing System) mode Auxiliary software: Hex dump Status sheet Font sample Built-in fonts: See Table 1-7.

Table 1-7. Built-in Fonts Resident Fonts Bitmap fonts Line Printer16.66 cpi(Portrait) Scalable fonts Dutch 801Roman SWC Dutch 801Bold SWC Dutch 801Italic SWC Dutch 801Bold Italic SWC Swiss 742SWC Swiss 742Bold SWC Swiss 742Medium Italic SWC S: Supported, NS: Not Supported

Rev. B

Applicable Mode HP LJ4, GL/2 S S S S S S S S

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General Description

EPL-5500 Service Manual

Table 1-7. Built-in Fonts (Continued) Resident Fonts Scalable fonts Swiss 742Bold Italic SWC Swiss 721Roman SWM Swiss 721Bold SWM Swiss 721Oblique SWM Swiss 721Bold Oblique SWM Dutch 801Roman SWM Dutch 801Bold SWM Dutch 801Italic SWM Dutch 801Bold Italic SWM Symbol SetSWA More WingBatsSWM CourierSWC CourierBold SWC CourierItalic SWC CourierBold Italic SWC S: Supported, NS: Not Supported

1-8

Applicable Mode HP LJ4 GL/2 S S S S S S S S S S S S S S S

Rev. B

EPL-5500 Service Manual

General Description

1.3 INTERFACE SPECIFICATIONS The EPL-5500 is equipped with the following external interfaces: ❏ Parallel interface ❏ Optional LocalTalk/serial interface ❏ Optional Type B interface with Type-B EX box

1.3.1 Parallel Interface The parallel interface has the following two modes: ❏ Compatibility mode (same as parallel interface for EPSON’s current page printer) ❏ Reverse mode

1.3.1.1 Parallel Interface Compatibility Mode System: Handshaking: Connector type: Applicable plug: Transfer speed: Signal timing: Signal description:

STROBE synchronization, 8-bit parallel data transfer BUSY and ACKNLG signals P90-25027-1 (Amphenol) receptacle 57-30360 (Amphenol or equivalent) Approximately 400,000 bytes/second (max.)

See Figure 1-3.

See Table 1-8.

0.5 µ s 0.5 µ s (minimum) (minimum) DATA 1-8

VALID

VALID

0.5 µ s (minimum) STR OBE 0.5 µ s (maximum) BU SY

0s 0.5 or 5 µ s (min.) (minimum)

AC KN LG

1 or 10 µ s (typical)

Figure 1-3. Compatibility Mode Signal Timing

Rev. B

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General Description

EPL-5500 Service Manual

Table 1-8. Parallel Interface Pin Assignments Pin No.

Signal Name STROBE

I/O IN

1

DATA 1-8 2-9

IN

Description STROBE is a strobe pulse used to read data from the host computer. The pulse width must be more than 0.5 µsec.

Normally it is HIGH, and data is latched at the trailing edge of this signal.

DATA 1 to 8 are parallel data bits. When the signal is HIGH, the data bit is 1, and when it is LOW, the data bit is 0. The most significant bit (MSB) is DATA 8. The signal state must be maintained for 0.5 µsec. on either side of the STROBE signal active edge.

ACKNLG

ACKNLG is an acknowledge pulse with an approximate width OUT of 1 or 10 µsec. This signal goes LOW when the data reception is completed, which indicates that the printer can accept new data.

Timing with the BUSY signal is specified through SelecType.

BUSY

OUT The BUSY signal informs the host computer of the printer state.

When the signal is HIGH, the printer cannot accept data.

PE

The PE signal indicates paper empty for the standard tray OUT selected through SelecType or command, or for the optional paper cassette. Paper empty is indicated by HIGH.

13

SLCT

OUT Used in reverse mode.

14

AUTO-FEED

IN

Not used.

15

NC

—

Not used.

16

GND

—

Logic ground level.

17

CHASSIS GND

—

Connected to the printer chassis. The printer chassis GND and the signal GND are connected to each other.

18

NC

—

Not connected.

19-30 GND

—

Ground level for the twisted pair return signal.

INIT

IN

The STROBE signal is ignored when this signal is LOW.

ERROR

This level goes LOW when the printer is: • Out of paper OUT • Paper jam • In the error state • Off line

33

GND

—

Same as for pins 19 to 30.

34

NC

—

Not used.

35

+5

—

Pulled up to +5 V through 1.0K-ohm resistance.

36

SLCT IN

—

Used in reverse mode.

10

11

12

31

32

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EPL-5500 Service Manual

General Description

1.3.1.2 Reverse Mode Reverse mode for the EPL-5500 supports the IEEE-P1284 nibble mode. This printer can run in reverse mode, in which the printer can inform the computer of its status with EJL and PJL commands.

System: IEEE-P1284 nibble mode Connector type: P90-25027-1 (Amphenol) receptacle Applicable plug: 57-30360 (Amphenol or equivalent) Signal description: See Table 1-9.

Table 1-9. Parallel Interface Pin Assignment Pin No. 1

Signal Name STROBE

I/O IN

DATA 1-8 2-9

IN

Description HostClk: This signal is a strobe pulse used to read extension request values from the host computer during negotiation.

These signals are data bits of extension request values received during negotiation. This printer supports following values: 0000 0100: Request Device ID (sent in nibble mode) 0000 0000: Request nibble mode

10

ACKNLG

OUT PtrClk: Printer sends clock data.

11

BUSY

OUT PtrBusy: Printer sends data bits 3 and 7 during data transfer to host computer.

PE

OUT AckDataReq: Printer sends data bits 2 and 6 during data transfer to host computer.

SLCT

OUT Xflag: Printer sends data bits 2 and 6 during data transfer to host computer.

12 13

AUTO-FEED 14

IN

HostBusy: This signal informs the printer of the host computer’s state. When the signal is HIGH, the host computer cannot accept data.

15

NC

—

Not used.

16

GND

—

Logic ground level.

17

CHASSIS GND

—

Connected to the printer chassis. The printer chassis GND and the signal GND are connected to each other.

18

NC

—

Not connected.

—

Ground level for the twisted pair return signal. nInit: Fixed at HIGH level.

19-30 GND 31

INIT

IN

32

ERROR

OUT nDataAvail: Printer sending data bits 0 and 4 during data transfer to host computer.

33

GND

—

Same as for pins 19 to 30.

34

NC

—

Not used.

35

+5

—

Pulled up to +5 V through 1.0K-ohm resistance.

36

SLCT IN

IN

1284Active: If this signal is set to HIGH, this printer is actively in P1284 (reverse mode).

Rev. B

1-11

General Description

EPL-5500 Service Manual

Compatibility M ode

Forward D ata Transfer

S TROB E ACK and BUSY

Forward Idle

SLCT IN=HIGH

ERR=HI GH No data sent

Terminate

Failed Negotiation

Negotiation

SLCT I N=LOW

E RR=L O W Sending data E RR = L O W

Sending data Host Busy Data Not Available

ERR=HI GH No data sent

Reverse Dat a Transfer

A UT O FEED=LOW

Reverse Idle

A UT O FE ED=L OW Request to send data

Host Busy Dat a Available

A UT O FEED=HIG H

ERR= LO W

Interrupt Ho st

Figure 1-4. Parallel Interface State Switch Diagram Figure 1-4 shows the switch diagram for the parallel interface state.

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Rev. B

EPL-5500 Service Manual

General Description

Figure 1-5 shows the negotiation timing chart.

DATA

00h or 04h

SEL-IN STROBE AUTO-FEED ACKNLG BUSY

Peripheral Busy Status

PE

Current Peripheral Status

Note1

SLCT ERROR

Note 2 Current Peripheral Status

Note1

Compatibility

Negotiation

HB DA or HB DNA (Note 3)

Idle or Transfer

Figure 1-5. Negotiation Timing Chart Notes: 1. This signal is set to HIGH when no data is being sent.

This signal is set to LOW during sending of data.

2. This signal is set to HIGH if the extension request value was 04h.

3. HB DA: Host Busy Data is Available HB DNA: Host Busy Data is Not Available Figure 1-6 shows the data transfer timing chart.

Notes: DATA SEL-IN STROBE AUTO-FEED ACKNLG BUSY

Peripheral Busy Status

Bit 3

Bit 7

PE

Bit 2

Bit 6

Note 1

SLCT

Bit 1

Bit 5

Note 2

ERROR

Bit 0

Bit 4

Note 1

HB DA

Peripheral Busy Status

Negotiation

Idle or Transfer HB DA or HB DNA (Note 3)

Figure 1-6. Timing Chart for Data Transfer 1.

2.

3.

This signal is set to HIGH when no data is being sent.

This signal is set to LOW during sending of data.

This signal is set to HIGH, if extension request value was 04h.

HB DA: Host Busy Data is Available HB DNA: Host Busy Data is Not Available

Rev. B

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General Description

EPL-5500 Service Manual

Figure 1-7 shows the timing chart for termination.

DATA SEL-IN STROBE AUTO-FEED

Note 3

ACKNLG BUSY

Peripheral Busy Status

PE

Note 1

SLCT

Note 2

ERROR

Note 1

HB DNA, Idle, or HB DA

Peripheral Busy Status Current Peripheral Status

Current Peripheral Status

Termination

Compatibility

Figure 1-7. Termination Timing Chart Notes: 1.

The signal is HIGH when HB DNA. The signal is LOW when HB DA. 2. The signal is set to HIGH, if the extension request value was 04h.

3. Idle = LOW. Figure 1-8 shows the timing chart for interrupts.

DATA SEL-IN STROBE AUTO-FEED ACKNLG BUSY

Peripheral Busy Status

PE Note 1

SLCT ERROR

Reverse Idle

Interrupt

HB DA

Transfer

Figure 1-8. Timing Chart for Interrupts Note:

1-14

The signal is set to HIGH, if the extension request value was 04h.

Rev. B

EPL-5500 Service Manual

General Description

1.3.2 Serial Interface This printer can use the optional LocalTalk/serial interface module.

Type: RS-232C/current loop Transfer system: Full duplex Synchronization: Asynchronous start-stop system Start-bit: 1 bit Stop-bit: 1 or 2 bits Data length: 7 bits or 8 bits Parity: Odd, even, or none Protocol: X-ON/X-OFF (can be combined with DTR control) DTR control (can be combined with X-ON/X-OFF) Transfer speed: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 bps Error: Overrun error: Processed as missing data and replaced by “*” Parity error: Replaced by “*” Framing error: Replaced by “*” Breaking character: Ignored Signal description: See Table 1-10.

Table 1-10. Serial Interface Pin Assignments Pin No.

Signal Name CHASSIS-GND

I/O

TXD

Serial ASCII data output by the printer. It maintains the OUT “MARK” state (LOW level) between transmitted character codes. Logic 0 is at HIGH level (SPACE) and logic 1 is at LOW level (MARK).

3

RXD

IN

Serial ASCII data input to the printer. It maintains “MARK” state (LOW level) between received character codes.

5

CTS

IN

Always ignored.

7

SIGNAL-GND

—

Ground.

TTY-TXD

Current loop signal: HIGH impedance (SPACE) between pins 17 and 24 or X-ON signal sent across pins 17 and 24 indicates OUT that the printer is ready to accept data; LOW impedance (MARK) or X-OFF signal being sent indicates that the printer is busy.

DTR

Signal output by printer. When the DTR signal is HIGH, the printer can receive the RXD signal. The SelecType settings do not specify DTR control, the signal level is HIGH while printer OUT power is on. When the SelecType setting is used for DTR control, DTR goes LOW in case of any error conditions. The data (RXD) from host computer must be stopped within 128 characters after DTR goes LOW.

23

TTY-RXD Return

—

Current loop signal: Current return for pin 17

24

TTY-TXD Return

—

Current loop signal: Input data current loop

25

TTY-RXD

IN

Current loop signal: Current return for pin 25

1

2

17

20

Note :

Rev. B

—

Description Connected to the printer chassis. The printer chassis GND and signal GND are connected to each other.

The DTR state can be selected through printer settings.

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General Description

EPL-5500 Service Manual

Handshaking When the vacant area for data in the input buffer drops to 256 bytes, the printer outputs an X-OFF code or sets the DTR signal level to LOW, indicating that the printer cannot receive more data.

Once the vacant area for data in the buffer recovers to 512 bytes, the printer outputs an X-ON code or sets the DTR flag to HIGH, indicating that the printer is again ready to receive data.

Protocol There are two types of protocols, as listed below, and each of them can be designated by SelecType independently. ❏ DTR/DSR protocol SelecType is used to execute the DTR/DSR control protocol. The DTR signal is set to HIGH when the printer is ready to receive data, and to LOW when conditions indicate an error or that the receiving buffer is full.

When the error is cleared and the printer returns to on-line mode, the signal returns to HIGH. When SelecType is used to set the DTR control OFF, DTR is always set to HIGH. The printer transmits TXD only when DSR is at the HIGH level (DSR is always considered HIGH when the SelecType setting for DSR is OFF). X-ON/X-OFF transmission is independent of the DSR state. ❏ X-ON/X-OFF (DC1/DC3) protocol SelecType is used to execute the X-ON/X-OFF protocol. The X-OFF (DC3) code is output if status indicates an error, and the printer warns the host to stop data transmission within 256 characters.

No further X-OFF codes are sent in response to additional data received from the host after the X-OFF code has been sent once. The X-ON (DC1) code is output after all conditions given in the error are cleared.

When the remaining capacity of the receive buffer reaches 512 characters, X-OFF (DC3) is output once. It is sent only once, even if there are multiple errors. The printer goes on line automatically at power on, and outputs an X-ON code. Transmission of X-ON/X-OFF codes can be defined by SelecType.

1-16

Rev. B

EPL-5500 Service Manual

General Description

1.3.3 Optional LocalTalk Interface This printer can use the optional LocalTalk/ serial interface module.

Type: LocalTalk Signal level: Same as RS-422 signal level Protocol: X-ON/X-OFF (cannot be combined with DTR control) DTR control (cannot be combined with X-ON/X-OFF) Transfer speed: 230.4K bps Signal description: See Table 1-11.

Table 1-11. LocalTalk Interface Pin Assignments Pin No. 1

Signal Name DTR

Description Signal output by the printer.

When the DTR signal is HIGH, the OUT printer can receive the RXD signal.

2

CTS

IN

TXD-

Serial ASCII data output from the printer.

HIGH level; when SD+ voltage is higher than the SD- voltage.

OUT LOW level; when SD+ voltage is less than the SD- voltage.

Logic 0 is SPACE and logic 1 is MARK. The state must be maintained between transmitted character codes.

GND

—

Ground.

IN

Serial ASCII data input from computer.

HIGH level; when RD+ voltage is higher than RD- voltage.

LOW level; when RD+ voltage is less than RD- voltage.

Logic 0 is “SPACE” and logic 1 is “MARK” state must be maintained between transmitted character codes.

3

4

I/O

RXD5

The printer transmits the data through TXD while CTS is HIGH.

6

TXD+

OUT Refer to TXD-.

7

NC

—

No connect.

8

RXD+

IN

Refer to RXD-.

Rev. B

1-17

General Description

EPL-5500 Service Manual

1.4 OPERATING INSTRUCTIONS This section describes functions performed through the control panel, such as printing a status sheet, hexadecimal dump, and printer settings functions.

1.4.1 Control Panel The printer control panel gives you easy control over most common printer operations. The panel consists of indicator lights and a button.

LED (Yellow) LED (Red)

Button

Figure 1-9. Control Panel Indicator lights ❏ Yellow light ON: Communication with the host is possible.

Fast flashing: Receiving data or warming up.

Slow flashing: Received data is stored in the printer but has not been printed.

OFF: Printer is power off. ❏ Red light ON: Paper jam or cover open.

Fast flashing: Feed jam, paper empty.

Slow flashing: One of these errors: SOFT ERROR, PRINT OVERRUN, MEMORY OVERFLOW, CHECK PAPER SIZE, IMAGE OPTIMUM OFF: No error condition.

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EPL-5500 Service Manual

General Description

Functions of Pressing the Button ❏ While the Red light flashes slowly:

Function of button Operation

Clears an error.

Hold down the button until the yellow and Red lights both go on after release. The printer prints a status sheet indicating the error type. ❏ While the Red light flashes fast: Function of button Prints any of the following page.

- Feed jam or paper empty page - Manual feed page Operation Load the paper or clear the jam, and then hold down the button until the yellow and Red lights go on, then release to continue printing. ❏ While yellow light is flashing slowly (except in EPSONScript mode): Function of button Prints out data in the printer’s memory.

Operation Hold down the button until the yellow and red lights go on, then release the button to continue printing. ❏ While the yellow light is on (except in WPS mode): Function of button Prints a status sheet.

Operation Hold down the button until the yellow and red lights go on, then release the button to continue printing. The yellow light flash while the status sheet is being printed. ❏ Reset (always effective except during warm up or status sheet printing): Function of button Clears current port.

Operation Hold down the button until the yellow and red lights go on, and when these lights start flashing alternately, release the button. ❏ Warm boot (always effective except during warm up or status sheet printing): Function of button Warm boot (same as power on reset, except for engine initialization).

Operation Hold down the button until the yellow and red lights start flashing at the same time, then release the button.

Rev. B

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General Description

EPL-5500 Service Manual

1.4.2 Printer Settings Functions The printer settings function from the Remote Control Panel (software) lets the user control most of the printer’s functions, such as printing test pages, selecting a paper size, and changing the printer’s configuration. Table 1-12 shows the printer settings options.

Table 1-12. Printer Settings Menu PRINTING

LJ4

PS*

ESCP2*

Item

Available Options

COPIES

1 to 999

PAGE SIZE

A4, A5, B5, LT, HLT, LGL, GLT, GLG, EXE, F4, MON, C10, DL, C5, IB5, CTM

ORIENTATION

PORT, LAND

MANUAL FEED

OFF, ON

RITech

OFF, LIGHT, MEDIUM, DARK

TONER SAVE

OFF, ON

FONT SRC

RESIDENT, SIMM, DOWNLOAD

FONT NUMBER

0 to (available)

PITCH

0.44 to 99.99 CPI (0.01 steps)

HEIGHT

4.00 to 999.75 PT. (0.25 steps)

SYMSET

Roman-8, ECM94-1, 8859-2 ISO, 8859-2 ISO, IBM-US, IBM-DN, PcMultiling, PcE.Europe, PcTk437, WiAnsi, WiE.Europe, WiTurkish, DeskTop, PsText, VeInternati, VeUS, MsPublishin, Math-8, PsMath, VeMath, PiFont, Legal, UK, ANSI ASCII, Swedis2, Italian, Spanish, German, Norweg1, French2, Windows

FORM

5 to 128 lines

SRC SYMSET*

0 to 3199

DEST SYMSET*

0 to 3199

ERR SHEET

OFF, ON

MicroGray

OFF, ON

PROTECT LEVEL

1 to 5

Font

Courier, Roman, Sans serif, Roman-T, Sans-H, Script

Pitch

10 CPI, 12 CPI, 15 CPI, Prop

Condensed

OFF, ON

T-Margin

0.40 to 1.50 Inch (0.05 steps)

Text

1 to (available) lines

CG Table

Pc USA, Italic, PcMultilin, PcPortuguese, PcCanFrenc, PcNordic, PcTurk2, Pc.E.Europe, BpBRASCII, BpAbicomp

Country

USA, France, Germany, UK, Denmak, Sweden, Italy, Spain1, Japan, Norway, Denmark2, Spain2, LatinAmeric, Korea, Legal

* With option

Table 1-12. Printer Settings (Continued) Menu 1-20

Item

Available Options Rev. B

EPL-5500 Service Manual ESCP2 * (Continued)

FX*

I239X*

General Description

Auto CR

ON, OFF

Auto LF

OFF, ON

Bit Image

Dark, Light, BarCode

Zero Char

0, φ

Font

Courier, Prestige, Roman, Sans serif, Script

Pitch

10 CPI, 12 CPI, 15 CPI, Prop

Condensed

OFF, ON

T-Margin

0.40 to 1.50 Inch (0.05 steps)

Text

1 to (available) lines

CG Table

Pc USA, Italic, PcMultilin, PcPortuguese, PcCanFrenc, PcNordic, PcTurk2, Pc.E.Europe, BpBRASCII, BpAbicomp

Country

USA, France, Germany, UK, Denmak, Sweden, Italy, Spain1, Japan, Norway, Denmark2, Spain2, LatinAmerica

Auto CR

ON, OFF

Auto LF

OFF, ON

Bit Image

Dark, Light, BarCode

Zero Char

0, φ

Font

Courier, Prestige, Gothic, Orator Script, Presentor

Pitch

10 CPI, 12 CPI, 15 CPI, 17 CPI, 20 CPI, 24 CPI, Prop

Code Page

437, 850, 860, 863, 865

T-Margin

0.40 to 1.50 Inch (0.05 steps)

Text

1 to (available) lines

Auto CR

OFF, ON

Auto LF

OFF, ON

Alt.Graphics

OFF, ON

Bit Image

Dark, Light, BarCode

Zero Char

0, φ

* With option

Rev. B

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General Description

EPL-5500 Service Manual

Table 1-12. Printer Settings (Continued) Menu JOB

EMULATION

CONFIG

PARALLEL

SERIAL

TEST

Item

Available Options

PAGE PROTECT

AUTO, ON

RESOLUTION

600, 300

IMAGE OPTIMUM

AUTO, OFF, ON

TIMEOUT

5 to 300

PARALLEL

LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

SERIAL*

LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

L/T*

LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

AUX*

LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

AUTO CONT

OFF, ON

STANDBY

ENABLE, DISABLE

DENSITY

3, 4, 5, 1, 2

INTERFACE

AUTO, PARALLEL, SERIAL*, L/T*, AUX*

TOP OFFSET

0 to 99

LEFT OFFSET

0 to 99

PAGE COUNT

0 to 262143

SPEED

FAST, LOW

BI-D

ON, OFF

WORD LENGTH

8, 7

BAUD RATE

9600, 19200, 38400, 57600, 300, 600, 1200, 2400, 4800

PARITY

NONE, EVEN, ODD

STOP BIT

1, 2

DTR

ON, OFF

XON/XOFF

ON, OFF

STATUS SHEET

—

PS STATUS SHEET*

—

PS FONT SAMPLE*

—

PS FACT SHEET*

—

EXT PRINTER INFO

—

* With option

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EPL-5500 Service Manual

General Description

1.4.3 Service Mode This printer has the following four service modes: ❏ Hexadecimal dump mode ❏ EEPROM format mode ❏ Factory reset mode ❏ Default setting mode Each service mode can be activatted selectively, by turning the printer on while hold down the button and release it at the corresponding timing shown in table below.

Table 1-13. Service Mode Select Timing Order

Pattern

LED (Yellow)

LED (Red)

Mode

1

Pattern 0-0

ON

ON

NA

2

Pattern 0-1

OFF

OFF

NA

3

Pattern 1

ON

OFF

Hexadecimal dump mode

4

Pattern 2

OFF

ON

EEPROM Initialize mode

5

Pattern 3

ON

OFF

Factory reset mode

6

Pattern 4

OFF

OFF

Default setting mode *1

*1: Can be performed by the user.

1.4.3.1 Hexadecimal Dump Mode Hexadecimal dump mode is a useful tool in troubleshooting data control problems. To enter hexadecimal dump mode, release the button at the mode select timing "Pattern-1". To quit the hexadecimal dump mode, turn off the printer or perform the warm-boot operation.

1.4.3.2 EEPROM Initialize Mode EEPROM initialize operations are required only when the main board or EEPROM is replaced and these operations are specified in the accompanying documentation.

This mode resets all user settings to the factory default settings and clears the printer status information (page counter and jam counter). To perform EEPROM initialize mode, release the button at the mode select timing "Pattern-2" and press the bottun again within 2 seconds from the release. The LED lights flashes alternately during the initialization. If the button is not pressed within 2 seconds after release, the printer enters nomal state without initialize operation.

1.4.3.3 Factory Reset Mode The factory reset mode resets the printer settings to the factory default settings (the page counter and jam counter are not cleared). To enter factory reset mode, release the button at the mode select timing "Pattern-3" and press the button again within 2 seconds after release. The LED lights flashes alternately during the reset operation. If the button is not pressed within 2 seconds after release, the printer enters the nomal state without reset operation.

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1.4.3.4 Default Settings The default settings function is used to enter printer settings. The procedure for entering default settings is: 1. To enter the default settings mode, turn on the printer while holding down the button until yellow and red lights turn off and on and off.

2. Press the button the number of times for the 1st code, while the yellow light is flashing.

3. Press the button the number of times for the 2nd code, while the red light is flashing.

4. Press the button the number of times for the 3rd code, while all lights flash.

5. If you need end the default settings mode, return step 2 and input the "111" code.

If you need set the other settings, return to step 2.

Thable 1-14 shows default settings codes.

Table 1-14. Default Settings Codes Menu

Item

Available Options

End of default settings mode PARALLEL

SPEED Bi-D

SERIAL*

WORD LENGTH BAUD RATE

PARITY

STOP BIT DTR XON/XOFF

Default Settings Codes 1st 2nd 3rd Code Code Code 1 1 1

FAST

1

1

2

SLOW

1

1

3

ON

1

1

4

OFF

1

1

5

8

1

2

1

7

1

2

2

9600

1

2

3

19200

1

2

4

38400

1

2

5

27600

1

3

1

300

1

3

2

600

1

3

3

1200

1

3

4

2400

1

3

5

4800

1

4

1

NONE

1

4

2

EVEN

1

4

3

ODD

1

4

4

1

1

4

5

2

1

5

1

ON

1

5

2

OFF

1

5

3

ON

1

5

4

OFF

1

5

5

* With option Table 1-14. Default Settings Code (Continued) Menu

1-24

Item

Available Options

Default Settings Codes 1st 2nd 3rd Code Code Code Rev. B

EPL-5500 Service Manual EMULATION

PARALLEL

SERIAL*

General Description LJ4

2

1

1

ESCP2*

2

1

2

FX*

2

1

3

I239X*

2

1

4

PS*

2

1

5

GL2

2

2

1

AUTO*

2

2

2

LJ4

2

3

2

ESC/P2*

2

3

3

FX*

2

3

4

I239X*

2

3

5

PS*

2

4

1

GL/2

2

4

2

AUTO*

2

4

3

LT* AUX* SERIAL* LT* AUX* SERIAL* LT* AUX* SERIAL* LT* AUX* SERIAL* LT* AUX* SERIAL* LT* AUX* SERIAL* LT* AUX* * With option

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General Description

EPL-5500 Service Manual

Table 1-14. Default Settings Code (Continued) Menu ESC/P2* / FX*

STATUS SHEET

PRINTING

Item CG Table

LANGUAGE

PAGE SIZE

ORIENTATION MANUAL FEED TONER SAVER JOB CONFIG

RESOLUTION AUTO CONT STANDBY INTERFACE

Available Options PcUSA

Deafult Settings Codes 1st 2nd 3rd Code Code Code 2 5 3

Italic

2

5

4

PcMultilin

2

5

5

PcPortugue

3

1

1

PcCanFrenc

3

1

2

PcNordic

3

1

3

PcTurkish

3

1

4

PcE.Europe

3

1

5

BpBRASCII

3

2

1

BpAbicomp

3

2

2

ENGLISH

3

2

3

FRENCH

3

2

4

GERMAN

3

2

5

ITALIAN

3

3

1

SPANISH

3

3

2

A4

3

5

1

LT

3

5

2

LGL

3

5

3

CTM

3

5

4

PORT

3

5

5

LAND

4

1

1

OFF

4

1

2

ON

4

1

3

OFF

4

1

4

ON

4

1

5

600

4

2

1

300

4

2

2

OFF

4

2

3

ON

4

2

4

ENABLE

4

2

5

DISABLE

4

3

1

AUTO

4

3

2

PARALLEL

4

3

3

SERIAL

4

3

4

LT

4

3

5

AUX

4

4

1

* With option

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Rev. B

EPL-5500 Service Manual

General Description

1.4.4 Display of Messages This printer indicates three types of messages with the LED lights or status sheet: status messages, error messages, and the service call error message.

1.4.4.1 Status Messages

The LED lights normally indicate the printer’s status. (Refer to Section 1.4.1.)

1.4.4.2 Error Messages

If any of the following errors occurs, it will be printed on the status sheet (Refer to Section 1.4.2.).

Clear the error immediately using the measures shown in the following table.

Table 1-15. Error Messages Message SOFT ERROR PAPER JAM PRINTER OPEN MANUAL FEED PAPER SET

PRINT OVERRUN MEM OVERFLOW CHECK PAPER SIZE IMAGE OPTIMUM

Status Measures Printer detected a CPU error or soft— error. (Refer to Chapter 5.)

A paper jam has occurred.

Open the cover and remove the jammed paper. Then close the cover.

Cover is open.

Close the cover.

Select manual feed and beginInsert paper and press button. printing data.

No paper is left in either the Load paper in paper tray or optional standard tray or the optionalcassette and press button. cassette.

Engine speed faster than print imagePress the button. processing.

Data has filled the buffer.

Confirm and press the button. And add optional SIMM. The paper size in the tray is differentChange the paper and print again. from the paper size chosen.

The printer uses a lower printErase downloaded data or add a quality.

SIMM.

1.4.4.3 Service Call Error Message

The LED lights flash randomly, when the printer detects a service call error. (Refer to Chapter 5.).

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General Description

EPL-5500 Service Manual

1.4.5 Printer Sharing This section describes printer sharing. This printer has two methods of printer sharing, port fixed mode and auto sense mode. These modes are selected by “INTERFACE” in the printer settings menu.

1.4.5.1 Port Fixed Mode

When the printer is in port fixed mode, only one interface port is active. Data from other ports is ignored.

1.4.5.2 Auto Sense Mode M ode Ass ignment

HP m ode ESC/ P2 m ode

User 1

F X m ode

Par allel

GL2 m ode EPSONScr ipt m od e

Switched by printer settings Input buffer

M ode Ass ignment

Memory

HP m o d e

ESC/ P2 m ode User 2

L/T or Serial or AUX

F X m ode GL2 m ode EPSONScr ipt m od e

Figure 1-10. Port Fixed Mode It is possible to allocate each mode to parallel, serial, L/T, and AUX. The entire memory will be allocated to the channels that are used. The interface that receives the data first will print first.

M ode Ass ignment

HP m ode ESC/ P2 m ode

User 1

F X m ode

Par allel

GL2 m ode EPSONScr ipt m od e

M ode Ass ignment

Input buffer

Auto Sense

Memory

HP m od e

ESC/ P2 m ode User 2

Serial or L/T or AUX

F X m ode GL2 m ode EPSONScr ipt m od e

Input buffer

Figure 1-11. Auto Sense Mode

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EPL-5500 Service Manual

General Description

1.4.6 Emulation Mode Switch Function This section describes the emulation mode switch function.

1.4.6.1 Emulation Switch by SPL

The two types of emulation switch function described below are available on this printer. Together they are referred to as SPL (Shared Printer Language).

EJL: EPSON Job Language This is EPSON’s original language system. It is used to skip among various destinations, as shown in Figure 1-12.

PJL: Printer Job Language This is HP’s original language, which is available with LaserJet 4 printer. It is used to skip among various destinations, as shown in Figure 1-12. The precise specifications for this language are based on HP LaserJet 4.

The figure below shows three types of mode switching.

Neither EJL nor PJL switches the mode directly. They first exit the current mode and return to EJL or PJL. Then they enter another mode.

1.4.6.2 Intelligent Emulation Switch LJ 4 EJL

FX

PJL

ESC/P 2

EPSONScript

EPSON GL/2

Figure 1-12. Emulation Switch by SPL Intelligent Emulation Switch (IES) automatically switches emulation mode, depending on the data sent from the host computer through one of the interface channels. It is able to switch between EPSONScript and other modes as shown in the figure below.

1.4.7 Bi Resolution Improvement Technology LJ4

ESC/P 2

EPSONScript

FX

EPSON GL/2

Figure 1-13. Intelligent Emulation Switch The EPL-5500 printer has BiRITech (Bi Resolution Improvement Technology), which is designed to improve print quality at 600 dpi and 300 dpi. By this method, the dot map data extracted from the image data is reassembled to improve print data.

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General Description

EPL-5500 Service Manual

The main improvement of this technique is in eliminating “jaggies” in diagonal lines. It is most effective when the dot map data fits the development characteristics of the printer mechanism well.

It is therefore necessary to set appropriate values in printer settings.

Note:

BiRITech is not as effective for printing a mesh pattern or gray scale. In such cases, BiRITech must be set to OFF. (The default setting is MEDIUM.) Since the BiRITech effect depends on the toner condition, adjusted it when the imaging cartridge is replaced or after the imaging cartridge is used for a long time.

1 inch 1

2

3

4

600

1 2 3 4 5

1 inch

6

7

R

8

600

(When 600 DPI printing)

Figure 1-14. Effect of BiRITech The following settings are available in printer settings for RITech: DARK, MEDIUM, LIGHT, OFF. The status sheet has the following RITech test image. When the toner density of area A is almost the same as that of area B (as shown in the figure below), the RITech setting is at its optimum setting. In other words, the optimum setting is achieved when it is difficult to distinguish the shape of area A from that of B.

A B

Figure 1-15. RITech Adjustment

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EPL-5500 Service Manual

General Description

1.4.8 Toner Save Mode The Toner Save Mode uses about 50% less toner than normal. The printer saves toner by substiuting a gray shade for the black inside of characters. the outlines of the characters are still printed in full back.

1.4.9 Optional Memory U pper E dge

Left Edge

Figure 1-16. Toner save Mode If you have difficulty printing complex, graphics-intensive pages or if you regularly use downloaded fonts, you may need to install one of the optional SIMM sets on this printer’s controller board. The printer’s controller board comes with 1MB of RAM installed.

By installing additional SIMMs, you can increase the printer’s memory to a total of 32MB, including the resident memory.

EPSON supplies several types of memory option (SIMMs). Other SIMMs can be purchased from other vendors. Be sure the SIMM meets the requirements listed below. ❏ 72-pin type ❏ Capacity is one of the following: 1, 2, 4, 8, 16, 32MB ❏ Access speed is less than 70 ns. ❏ Within the following dimensional size 36 mm (height) × 108 mm (width) × 10 mm (depth)

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General Description

EPL-5500 Service Manual

1.5 MAIN COMPONENTS To simplify maintenance and repair, the main components of the EPL-5500 have been designed for easy removal and replacement. The main components are: ❏ C169 MAIN-B Board Main board ❏ PWB-E Board Power supply circuit board ❏ PWB-F Board High-voltage supply circuit board ❏ Optical Unit Printhead unit ❏ Fusing Unit ❏ Photoconductor unit ❏ Developer cartridge ❏ Housing

C 1 69 M AIN - B Boa r d

Fusing Unit

PWB-E Bo ard

Optical Unit

PWB-F Board

Figure 1-17. Component Layout

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EPL-5500 Service Manual

General Description

1.5.1 C169 MAIN-B Board The C169 MAIN-B board is a video controller and engine controller board. The primary functions of this board are receiving print data from the host, generating the print image (video), and sending the print image to the engine controller via the video interface. A 32-bit 22 MHz RISC MB86933H SPARKlite CPU in location IC1 is used, and the following memory chips and custom ICs are assigned to the 4GB memory space. ❏ Memory chips Code and font ROMs: four 4M-bit EPROMs (IC13, 14, 15, 16) or two 8M-bit mask ROMs (IC21, 22) Optional NLSP font ROM: 4M-bit or 8M-bit ROM (IC12). Not available in U.S. version.

4M-bit DRAMs (IC17, 18) EEPROM (IC11) ❏ Custom ICs ASIC E05A91 (IC2) ASIC E05A92 (IC3) ASIC E05A93 (IC4) ❏ Others Reset IC M51953BFP (IC6) The engine controller consists of an M3807x 8-bit CPU, including a MASK ROM. It controls laser scanning (the polygon mirror drive motor), image synchronization, laser beam pulse width, and power.

There are two types of C169 MAIN-B boards used as after service parts. The following table shows differences between them.

Table 1-16. Differences in Components for the C169 MAIN-B Board US version IC12 Jumper J20

None Open

Other Version IC socket Short

E05 A93 (IC4)

(IC 12)

M B8 6 9 3 3 H (IC1 )

(IC 16) (IC 14) (IC 15)

E05 A91 (IC2)

E05 A92 (IC3)

(IC 13)

M 3807 (IC201)

Figure 1-18. C169 MAIN-B Board

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General Description

EPL-5500 Service Manual

1.5.2 PWB-E Board The PWB-E is the power supply board, which consists of a switching regulator circuit. It converts the AC line voltage into +24 V and +5 VDC voltages. There are two types of power supply board, the 100/120 V type and 220/240 V type. The difference between the two circuits is only in the input section.

CAUTION Do not touch VR1 on PWB-E board. This volume is for factory setting only.

VR1

F1

Figure 1-19. PWB-E Board 1.5.3 PWB-F Board The PWB-F is the high-voltage supply circuit board. It converts the development bias, OPC drum charge bias, and image transfer bias.

CAUTION Do not touch VR3 on the PWB-F board. These volumes are for factory setting only.

VR3

Figure 1-20. PWB-F Board

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EPL-5500 Service Manual

General Description

1.5.4 Optical Unit The optical unit consists of the laser diode (semi-conductor laser), the mirror motor (scanner motor) which drives the polygon mirror for laser scanning, and several mirrors and lenses. The laser beam generated by the laser diode is conducted to the OPC drum surface by way of the polygon mirror, as well as several mirrors and lenses, to create a latent electro-photographic image on the drum.

Figure 1-21. Optical Unit 1.5.5 Fusing Unit The fusing unit fixes the toner to the paper using heat and pressure. This unit has a heater lamp, thermistor, and thermal fuse. There are two types of fusing units, the 120 V type and the 220/240 V type. The only difference between them is the heater lamp.

Figure 1-22. Fusing Unit

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General Description

EPL-5500 Service Manual

1.5.6 Photoconductor Unit Core mechanisms of the printing process, such as charging and imaging, are integrated into this unit.

Figure 1-23. Photoconductor Unit 1.5.7 Developing Cartridge Core mechanisms of the printing process, such as developing, are integrated into this cartridge.

1.5.8 Lower Paper Casste Unit This optional paper cassete allows you to feed up an addtional 250 sheets of A4 or B5 paper into this printer.

Figure 1-24. Developing Cartridge Note:

While you use A4/B5 paper, jumper JP1 on the circuit board of lower paper casstte unit should be set to 2-3. While you use letter/ executive paper, jumper JP1 should be set to 1-2. Jumper JP2 is fixed to 1-2.

1-36

Rev. B

Chapter 2

Operating Principles

Table of Contents 2.1 ENGINE OPERATION 2-1 2.1.1 Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.1.1.1 Paper Feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.1.1.2 Drum Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2.1.1.3 Laser Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2.1.1.4 Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 2.1.1.5 Image Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 2.1.1.6 Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 2.1.2 Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 2.1.2.1 Main Motor Functions and Control . . . . . . . . . . . . . . . . . . . . . . . . 2-8 2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor. . . . . . . . . . . . . . . 2-9 2.1.2.3 Fuser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 2.1.2.4 Scanner Mirror Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11 2.1.2.5 Laser Diode Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 2.1.2.6 Bias Voltages and Laser Drive Timing . . . . . . . . . . . . . . . . . . . . 2-13 2.1.2.7 Fan Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 2.1.2.8 Power Supply Circuit Function and Safety Protection . . . . . . . . . 2-15 2.2 VIDEO CONTROLLER OPERATION 2-16 2.2.1 C169 MAIN-B Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16 2.2.1.1 Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 2.2.1.2 Bus Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 2.2.1.3 Interrupt Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 2.2.1.4 DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 2.2.1.5 Parallel Interface Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21 2.2.1.6 Video Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

List of Figures Figure 2-1. Main Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Figure 2-2. Print Process Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Figure 2-3. Paper Feeding from the Paper Feed Tray . . . . . . . . . . . . . . . . . . . . 2-3 Figure 2-4. Paper Feeding from the Lower Paper Cassette . . . . . . . . . . . . . . . . 2-4 Figure 2-5. Drum Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Figure 2-6. Laser Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Figure 2-7. Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Figure 2-8. Image Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Figure 2-9. Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Figure 2-10. Engine Controller Connecting Diagram . . . . . . . . . . . . . . . . . . . . . 2-7 Figure 2-11. Gear and Roller Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Figure 2-12. Main Motor Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Figure 2-13. Paper Take-Up Sensor and Paper Exit Sensor On/Off Timing . . . 2-9 Figure 2-14. Fuser Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Figure 2-15. Temperature for Fuser Control Procedure . . . . . . . . . . . . . . . . . . 2-10 Figure 2-16. Scanner Motor Control Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11 Figure 2-17. Laser Diode Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Figure 2-18. LDATA Generation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Figure 2-19. Laser Emission Power Adjustment Timing . . . . . . . . . . . . . . . . . . 2-12

Figure 2-20. High-Voltage Supply Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-13 Figure 2-21. Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Figure 2-22. Print Sequence (Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Figure 2-23. Print Sequence (End). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Figure 2-24. Power Supply Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-15 Figure 2-25. Video Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16 Figure 2-26. C169 MAIN-B Board Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-16 Figure 2-27. Data Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18 Figure 2-28. Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 Figure 2-29. Bus Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 Figure 2-30. DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 Figure 2-31. Parallel Interface Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

List of Tables Table 2-1. Functions of C169 MAIN-B Board Main Elements . . . . . . . . . . . . . 2-17

EPL-5500 Service Manual

Operating Principles

2.1 ENGINE OPERATION This section describes the functions and operating principles of the EPL-5500 engine. Figure 2-1 shows the locations and names of the main engine components.

4

7

5 6

3 8

2 1

9

19

10 11

18 17

12 Optional Second Paper Feeding Unit

16

15

14

13

Figure 2-1. Main Components 1. Fan Motor (M3) 2. Lower Fusing Roller 3. Paper Exit Sensor (PC3) 4. Upper Fusing Roller 5. Heater Lamp (H1) 6. Paper Exit Roller 7. Print Tray 8. Optical Unit 9. Toner Cartridge 10. Manual Feed Guide

Rev. B

11. Paper Feeding Tray 12. Paper Lift-up Plate 13. Paper Empty Sensor (PI1) 14. Paper Take-up Roller 15. Paper Transport Roller 16. Paper Take-up Sensor (PC1) 17. Pre-image Transfer Roller 18. Electrode Comb 19. Drum Cartridge

2-1

Operating Principles

EPL-5500 Service Manual

2.1.1 Print Process This section describes the print process from paper feeding to paper exit. Figure 2-2 shows a diagram of the print process.

Optical Unit

Print Exit

Fusing

Exposure

Drum Cartridge Drum Charge

Image Transfer

Toner Hopper Development Toner Cartridge

Paper Feeding Tray

Second Paper Feeding Unit (optional)

Manual Feed (1 sheet)

Multi Feeding (150 sheets)

Multi Feeding (250 sheets)

Figure 2-2. Print Process Diagram

2-2

Rev. B

EPL-5500 Service Manual

Operating Principles

2.1.1.1 Paper Feeding Paper can be fed into the printer from the paper feed tray (150 sheets) or from the manual feed slot (1 sheet at a time). Installing an optional second paper feed unit (lower cassette, 250 sheets) adds another feeding method. Paper fed by the paper take-up roller is transported to the transport roller, pre-image transfer roller, and then exit roller. After this, the paper is fed out onto the print tray. The starting position of an image is decided by the paper take-up sensor (PC1). A photo sensor is used as the paper take-up sensor (PC1) and the paper exit sensor (PC3).

Paper Feeding Tray (Standard Tray) When the paper take-up solenoid is energized, the main motor (M1) drive is transmitted to the paper take-up roller via the paper take-up clutch (a one-way clutch) to rotate the paper take-up roller one revolution. At the same time, the depression cam rotates and releases the paper lift-up plate to feed the top (first) paper. The fixed separating pad is used for the paper separation system.

It prevents the second or later sheets from being fed together with the top paper.

Upper Fusing Roller

Lower Fusing Roller

Paper Exit Roller

Paper Exit Sensor (PC3) Paper Take-Up Roller Depression Cam

PC Drum

When SL1 is de-energized

Pre-Image Transfer Roller Paper Lift-Up Plate

When SL1 is energized

Fixed Separating Pad Transport Roller Paper Take-Up Sensor (PC1)

Paper TakeUp Clutch Paper Take-Up Solenoid (SL1) Paper Lift-Up Plate

Paper

Figure 2-3. Paper Feeding from the Paper Feed Tray

Rev. B

2-3

Operating Principles

EPL-5500 Service Manual

Second Paper Feed Unit (Optional Lower Cassette) This unit contains no drive motor, so the main motor (M1) drive is transmitted to the paper take-up and transport sections in the unit via the drive transmission gear. Although the feeding method is the same as for the paper feed tray in the printer, this unit uses a corner separation system as its paper separating function. The paper take-up solenoid in the lower cassette is controlled by the printer via a circuit board in the optional unit.

When the paper regulation plate is set to the inside position, switch S1 on the circuit board is automatically turned on, causing the printer to recognize that B5-size paper will be fed. On the other hand, when the paper regulation plate is set to the outside position, S1 remains off, causing the printer to recognize that A4-size paper will be fed.

Paper Empty Sensor (P|1) PWB-A Paper Regulation Plate

Paper Take-Up Roller Paper Take-Up Clutch Drive Transmission Gear

Paper Lift-Up Plate Transport Roller Paper Take-Up Solenoid

Corner Separation Plate

Figure 2-4. Paper Feeding from the Lower Paper Cassette

2.1.1.2 Drum Charge The PC drum is charged with static electricity before laser exposure. The rotating charge brush and pre-film are used as the charging method. Less ozone is generated by the corona charge of the rotating charge brush and the pre-film, and the PC drum can be charged with low voltage because the charge is dirctly applied to the PC drum. The rotating charge brush is rotated by the drive of the M1 main motor via its gear.

Drum Cartridge

Drum Charging and Pre-film Bias

C169 MAIN-B IC201

PWB-F

Rotating Charge Brush PC Drum Protecting Shutter

PC Drum Protecting Shutter Charged Surface: (approx. -800 V)

A

PC Drum B

Pre-film

A: Drum Charging Bias B: Drum Ground

Figure 2-5. Drum Charge

2-4

Rev. B

EPL-5500 Service Manual

Operating Principles

2.1.1.3 Laser Exposure The laser beam, emitted from the optical unit, makes an invisible static image. The SOS (start of scan) sensor, installed on the laser diode control board (PWB-D), unifies the laser emission timing for each scan line.

Charged Surface

C169 MAIN-B Reflector Mirror

IC201

CN210 1

5 Laser-Exposed Surface: (Approx. -50 V) CN205

PWB-D

1 M2

SOS Sensor Laser Diode

7

Figure 2-6. Laser Exposure 2.1.1.4 Development Toner is applied to the invisible static image on the PC drum and a toner image is created on the surface. When the PC drum starts to rotate (when the main motor is activated), the PC drum surface remains 0 V at the position between the rotating charge brush and sleeve roller. At this time, a specified positive voltage is applied to the sleeve roller to prevent toner from being attracted back onto the PC drum (reverse bias control).

2

4 3 Vs terminal VBL terminal

VB terminal

VB (Developing Bias) C169 MAIN-B

VBL (Toner Blade Bias) PWB-F

IC201 CN204 1 1

8 CN1F

8

Vs (Lower Seal Bias)

Figure 2-7. Development 1. Toner hopper: Contains toner.

2. Toner agitating screw: Stirs the toner in the hopper and sends the toner to the toner transport roller.

3. Toner transport roller: Transports the toner to the sleeve roller.

4. Doctor blade: Spreads a thin, even coat of toner over the resin sleeve. The toner is negatively charged by passing between this blade and resin sleeve.

5. Sleeve roller: Rotates the resin sleeve.

6. Resin sleeve: Carries the toner to the PC drum surface for development.

7. Bias seal: Collects the toner remaining on the resin sleeve.

8. PC drum: Is exposed to the laser to create an invisible image and rotates to carry the developed image to the paper surface.

Rev. B

2-5

Operating Principles

EPL-5500 Service Manual

2.1.1.5 Image Transfer The electrode comb is an image transfer system that transfers the toner image on the PC drum onto the paper.

Image Transfer Unit Housing Housing Electrode Comb Pre-Image Transfer Roller

C169 MAIN-B Electrode Comb IC201

PWB-F

PWB-S 1

1

CN204 1 1

8 CN1F

8

8

Housing

Pre-Image Transfer Roller

8

Housing Ground Image Transfer Bias

Figure 2-8. Image Transfer 2.1.1.6 Fusing The toner image transferred onto the paper is fixed securely using a heat roller system as the fusing system. The upper fusing roller, which is heated by the heater lamp, fuses the toner image, which is securely fixed by the pressure between the upper and lower fusing rollers. Thermistor TH1 detects and controls the temperature of the upper fusing roller. Thermal fuse TF1 blows when the temperature exceeds 200° C, shutting down power to the heater lamp.

Thermal Fuse Thermistor Upper Fusing Roller

Lower Fusing Roller

Heater Lamp Paper

Figure 2-9. Fusing

2-6

Rev. B

EPL-5500 Service Manual

Operating Principles

2.1.2 Engine Control This section describes engine control, the power supply board, and the high-voltage supply board.

The engine is controlled by the main board (C169 MAIN-B Board). Figure 2-10 shows the engine controller connecting diagram.

C169 MAIN-B Board Main Motor (M1)

PWB-D Laser Diode Drive

Polygon Motor (M2) PWB-E Power Unit

Fan Motor (M2)

Heater Lamp Interlock Switch

Exit Sensor (PC3) Paper Take-up Sensor (PC1) Paper Take-up Solenoid (SL1) Fusing Roller Thermistor (TH1) Image Transfer Housing Image Transfer Charger

PWB-F High Voltage Unit

Paper Take-up Solenoid (SL2)

PWB-S

PWB-A

2nd Paper Feeding Unit (Option)

Figure 2-10. Engine Controller Connecting Diagram

Rev. B

2-7

Operating Principles

EPL-5500 Service Manual

2.1.2.1 Main Motor Functions and Control The M1 main motor transmits the drive to the printer rollers and the optional second paper feed unit (lower cassette) via each gear as shown below.

Toner Cartridge

Sleeve Roller

A

Paper Exit Roller

Upper Fusing Roller Lower Fusing Roller

PC Drum

Pre-image Transfer Roller Main Motor (M1)

A

Optional Second Paper Feeding Unit Paper Take-Up Roller Paper Transport Roller

Fig.2-11. Gear and Roller Positions

2-8

Rev. B

EPL-5500 Service Manual

Operating Principles

Figure 2-12 shows the main motor drive circuit. The M1 main motor is a four-phase stepping motor controlled by the CPU (IC201) on the main board (C169 MAIN-B). This board has a stepping motor driver IC that drives the M1 main motor with a constant current.

Main Board C169 MAIN-B Main Motor M1 C N 206 A A B B

1 2 3 4

Figure 2-12. Main Motor Drive Circuit

2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor The paper take-up sensor has three functions: 1. To detect the top edge of paper. The engine starts printing when the detection signal is received.

2. To detect paper size. The printer detects the time it takes for paper to pass the paper take-up sensor during paper feeding. If this time is long, longer paper is feeding; if the time is short, shorter paper is feeding.

3. To detect paper jams and feed jams.

If the paper take-up sensor does not turn on for paper feeding, the printer detects a feed jam or no paper. A feed jam is a paper jam that occurs in the feed process.

If any of the following conditions is detected, the printer detects a paper jam. A paper jam is a jam that occurs in the printing process area.

•

The paper take-up sensor (PC1) or the paper exit sensor (PC3) is on at power on or when the upper case is closed.

•

The paper take-up sensor (PC1) or the paper exit sensor (PC3) is not turned on/off within the specified time. (Refer to the following timing chart.)

Take Up Solenoid ON PC1 (CN203-3) PC3 (CN208-3)

2.0

[seconds] 11.0

3.5-4.5

3.4-4.7

Figure 2-13. Paper Take-Up Sensor and Paper Exit Sensor On/Off Timing

Rev. B

2-9

Operating Principles

EPL-5500 Service Manual

2.1.2.3 Fuser Control The heater lamp, powered by AC voltage, heats the fuser. When the power supply board receives a FUSER signal from the main board (C169 MAIN-B), the power supply board (PWB-E) supplies the AC voltage to the heater lamp. This AC voltage is cut by an interlock switch when the case is open.

Thermistor TH1 detects the surface temperature of the upper fusing roller and inputs that analog voltage to the 77-pin chip, IC201. Based on this temperature data, the heater lamp on/off signal (the FUSER signal) is output from the 54-pin chip, IC201, causing heater lamp H1 to turn on or off to control the fusing temperature. When the heater lamp is not turned off even if the thermistor detects a high temperature malfunction (which occurs if the surface temperature of the upper fusing roller exceeds 200º C), the signal from the 75-pin chip, IC201, changes from H to L to turn off the heater lamp forcibly.

C169 MAIN-B

Analog Voltage Detected by the Thermistor (TH1)

IC201

CN202 1 2

77 5 VDC

54 L 75 H

2 H 3 5 6

H

IC202B

IC202A 1 H

4

3

TH1 Thermistor

CN207 1

L

4

1

5

L

CN3E 1 2 3

PWB-E

5

Heater Lamp H1 TF1 Thermal Fuse

CN1E Heater Lamp ON/OFF Signal L H1:ON H H1:OFF

Figure 2-14. Fuser Control Circuit The following figure shows the fuser temperature control procedure.

When a print is made immediately after warm up

Temperature (Degrees C) 172 156

112

Time

Powe r On

Warm up

Standby

Standby with Low Temperature

Figure 2-15. Temperature for Fuser Control Procedure 1. Warm up: After printer initialization, printer warm up starts, and the heater lamp turns on until the upper fusing roller’s temperature reaches approximately 172º C. 2. Standby: In standby mode, the upper fusing roller’s temperature is controlled to maintain 156º C. When this condition continues for 3 minutes, the printer goes into standby mode at low temperature.

3. Print cycle: When the printer receives the printing command from the controller, the upper fusing roller is controlled to maintain 172º C. 4. Standby at low temperature: The upper fusing roller is controlled to maintain 112º C. 2-10

Rev. B

EPL-5500 Service Manual

Rev. B

Operating Principles

2-11

Operating Principles

EPL-5500 Service Manual

If any of the following conditions are detected, the printer indicates a fuser error: 1. If the thermistor detects the temperature has not risen by 20º C for 50 msec. within 12 to 30 sec. after warm up. (This error applies only when the thermistor detects a temperature of 90º C or less.)

2. If the thermistor detects that the temperature has not reached 172º C within 60 sec. after warm up.

3. Except in pause mode (see the note below), if the thermistor detects that the temperature in the idle state has fallen to 80º C or lower for 50 msec., or the temperature during printing has fallen to 133º C or lower.

4. The thermistor detects that the temperature has exceeded 193º C for 50 msec. during temperature control.

Note:

Pause Mode: In this mode, the control temperature is decreased to save power in the idle state, the heater lamp is turned OFF.

Thermo fuse TF1 cuts power if the temperature of the fusing section rises to an abnormally high level (over 200° C, 392° F).

2.1.2.4 Scanner Motor Control Figure 2-16 is the scanner motor (M2) control circuit. The scanner motor is driven while it receives the POLYGON CTL signal. Motor rotation speed is 8622 rpm Main Board (C169 MAIN-B)

Scanner Motor M2 CN210 NC +24V GND2 +5V P_CTL

1 2 3 4 5

Figure 2-16. Scanner Motor Control Circuit If the any of following conditions are detected, the printer indicates a scanner motor error: 1. The SSCAN signal has not been given once within 1 sec. after the scanner motor is energized.

2. The number of scanner motor rotations has not stabilized within ± 0.5 rpm by 4.2 sec. after the motor is energized.

3. The number of scanner motor rotations has exceeded ± 3% for more than 0.5 sec. after the motor is energized, even if the rotation number stabilizes within ± 0.5 rpm.

2-12

Rev. B

EPL-5500 Service Manual

Operating Principles

2.1.2.5 Laser Diode Drive Figure 2-17 shows the laser diode drive circuit. Laser diode emission is controlled by three signals (LDATA, LDAPC1, and LDAPC2) from the main board (C169 MAIN-B).

Laser Diode SSCAN LD_CTL LDAPC1 LDAPC2

SOS Mirror

LD SOS (PWB-D)

L DATA SOS Sensor

Main Board (C169 MAIN-B)

Figure 2-17. Laser Diode Drive Circuit The LDATA signal is the laser on/off signal. When it is LOW, the laser emits, and when it is HIGH, the laser stops emitting. LDATA is the combination of the two signals in the figure below. If the VIDEO or the FORCED LASER DIODE ON signal is activated (LOW), the LDATA signal will be active. The VIDEO signal is an image signal sent from the video controller circuit. The FORCED LASER DIODE ON signal is a laser emission signal to apply the laser beam to the SOS sensor.

Forced Laser Diode ON

L DAT A

VIDEO from the Video Controller Circuit (C169 MAIN-B)

Figure 2-18. LDATA Generation Circuit The laser diode is forcibly activated after scanner motor M2 turns on. At this time, laser emission power is adjusted. LDAPC1 and LDAPC2 are the laser emission power adjust signals; they are analog signals. LDAPC1 is a tuning, and LDAPC2 is a fine tuning.

Scanner Motor On LDATA

LDAPC1 LDAPC2

P_CTL

Figure 2-19. Laser Emission Power Adjustment Timing If any of the following conditions are detected, the printer indicates a laser error: The LDAPC1 signal or LDAPC2 signal has been out of the specified range while laser power is adjusted.

Rev. B

2-13

Operating Principles

EPL-5500 Service Manual

2.1.2.6 Bias Voltages and Laser Drive Timing Figure 2-20 is a diagram of the drum charge bias voltage, image transfer bias voltage, and the developing bias voltage control circuit. These bias voltages are generated from the +24 VDC from the high-voltage supply board (PWB-F). If the printer detects a case-open condition, the interlock switch is set to off, which cuts the +24 VDC, which, in turn, cuts the bias voltages.

These bias voltages are controlled by the main board (C169 MAIN-B). The HV-T signal is the image transfer bias voltage control. While this signal is LOW, the image transfer electrode comb is charged to from +3 to +6K VDC by the high-voltage supply circuit. HV SEL1 and HV SEL2 are image transfer bias level control signals.

The HVB signal is the digital signal for developing bias voltage control. This signal controls the bias on/off. The BIAS MON signal controls the bias voltage level (–300 V to –375K VDC) using pulse data. The image density is controlled by the developing bias voltage level.

Main Board (C169 MAIN-B)

Power Supply Board (PWB-E)

High Voltage Supply Board (PWB-F) PWB-S

+24 VDC

+24 VDC Interlock SW

HV-C HV-T HV SEL1 HV SEL2 HV B BIAS MON

Drum Charge -2.0 K VDC Image Transfer Bias 3K to 6 K VDC

Developing Bias -270 to -370 VDC Doctor Toner Blade Bias -500 VDC Seal Bias -250 VDC

Figure 2-20. High-Voltage Supply Block Diagram

2-14

Rev. B

EPL-5500 Service Manual

Operating Principles

Figure 2-21 shows the print process.

Brush Roller Charging Laser Exposure

PC Drum

Development Image Transfer

Figure 2-21. Print Process Figure 2-22 shows the start print sequence. The printer’s engine starts printing when it receives the PRINT signal from the video controller circuit.

M3 normal rotation

Polygon Motor (M3)

20 1st: 790 to 1300 2nd: 2670 to 3080

Paper Take-up Sensor (PC1) Paper Take-up Solenoid (SL1/2)

500

Main Motor (M1)

150

Drum Charge Laser Exposure

[m sec.]

4000

Print C o mm a n d

1st:770, 2nd:2820

2310 200

Development

260 500

480 300

Image Transfer

1st: 1510 2nd: 1680

Figure 2-22. Print Sequence (Start) Figure 2-23 is the end of the print sequence. [m sec.]

Polygon Motor (M3) Paper Exit Sensor (PC3)

5160

Main Motor (M1) Drum Charge

850

480

Laser Exposure Development Image Transfer

Figure 2-23. Print Sequence (End)

Rev. B

2-15

Operating Principles

EPL-5500 Service Manual

2.1.2.7 Fan Motor Control The fan motor (M3) rotates at engine initialization, and stops after 2 sec. The fan motor also rotates during printing. When printing ends, the fan motor stops after 3 min. If the following condition is detected, the printer indicates a Fan motor error.

The voltage equivalent to the motor current of the fan motor remains 160 mV or lower for 2 sec.

2.1.2.8 Power Supply Circuit Function and Safety Protection The printer’s power supply board (PWB-E) supplies the +5 VDC and +24 VDC. The +24 VDC is used as the bias voltage supply, main motor (M1) drive, scanner motor (M2) drive, fan motor (M3) drive, and solenoid drive. For safety protection, the +24 VDC line is cut when the interlock switch (case open switch) is off.

Interlock SW +24 VDC

AC IN

Power Supply Board (PWB-E)

+5 VDC

SG FG

Figure 2-24. Power Supply Circuit Block Diagram

2-16

Rev. B

EPL-5500 Service Manual

Operating Principles

2.2 VIDEO CONTROLLER OPERATION The video controller section generates the video signals for received data. The video controller section is the C169 MAIN-B Board.

C169 MAIN-B Board Video Controller Section

Engine Controller Section

Figure 2-25. Video Controller Section 2.2.1 C169 MAIN-B Board Operation Figure 2-26 shows a block diagram of video controller section of the C169 MAIN-B Board. The C169 MAIN-B Board contains the video controller, which consists of a MB86933H (SPARKlite, 22.5 MHz, 32-bit bus) RISC CPU; the standard cells developed for this printer; DRAMs; ROM; and an EEPROM.

CPU M B86933H (IC1)

RO M 16M (IC21, 22 or IC13, 14, 15, 16)

E E PR O M (IC11)

RO M 8 (IC12)

A D D R ES S DATA CO NTRO L

E05A91 (IC 2)

E05A92 (IC3)

E05A93 (IC4)

I/O DATA A D D R ES S D R AM s (IC 17, 18) an d SI M M

Option

Video I/F

Par allel I/F RS-232C Specific I/F LocalTalk

Figure 2-26. C169 MAIN-B Board Block Diagram

Rev. B

2-17

Operating Principles

EPL-5500 Service Manual

Table 2-1 lists the functions of the main elements of the video controller section in C169 MAIN-B Board.

Table 2-1. Functions of C169 MAIN-B Board Main Elements Element MB86933H CPU

Location RISCIC1

Function The CPU, which operates at 22.5 MHz, manages the video controller operation.

E05A91 ASIC

IC2

This ASIC contains the following functions: •Address decoding •DRAM management (refresh control, RAS/CAS control)

E05A92 ASIC

IC3

This ASIC contains the following functions: •Video signal processing •Toner save function •BiRITech •EMGTech

E05A93 ASIC

IC4

This ASIC contains the following functions: •Video interface •Bi-parallel interface •LocalTalk module control •Type-B EX interface box control

Two 8M ROMs or four 4M ROMs

IC21,22 or These ROMs are code and font ROMs. IC13,14,15,16

8M ROM

IC12

This ROM is a local language (font) ROM option (except in the U.S. model).

EEPROM

IC11

This EEPROM stores the following: •Model type •Printed page counter value •Jam counter value •Printer setting

DRAM

IC17,18

These DRAMs are used as the working area of the CPU: input buffer, image buffer, etc.

2-18

Rev. B

EPL-5500 Service Manual

Operating Principles

Print data and commands transmitted from the host computer via the parallel or optional interfaces are read using the CPU interrupt process and stored in the DRAM input buffer. Data and commands in the input buffer are processed by the CPU, which then stores the printing bitmap data (image data) in the V (video) -RAM (image buffer) area of the DRAM. The size of the V-RAM depends on the available DRAM size. A “PRINT OVERRUN” occurs when the V-RAM is so small that the CPU cannot process data faster than it is transmitted to the engine controller board. If such an error occurs, the user can increase the V-RAM using the printer setting “IMAGE OPTIMUM.” The E05A91 transmits image data stored in the V-RAM to the E05A92. The E05A92 changes the image data format from 32-bit parallel data to serial data, and stores it in the internal temporary buffer. The temporary buffer has a capacity equivalent to several lines. This is controlled by the E05A92, which synchronizes and transmits the temporary buffer’s data to the engine controller board. The E05A92 then manipulates the printer data based on the BiRITech, EMGTech, and toner saver settings.

CPU MB86933H (IC1)

E05A91 (IC2)

E05A93 (IC4) Host Computer

Temporary Buffer

RITech EMGTech Toner save

Video

Dev elopm ent Parallel/Ser ial Convert er

Input Buffer

VR AM

E05A92 (IC3)

System Area

DRAM

Figure 2-27. Data Flow Diagram

Rev. B

2-19

Operating Principles

EPL-5500 Service Manual

2.2.1.1 Reset Circuit The entire system (CPU and external devices) can be initialized if the RESET signal (CPU pin 113) are active simultaneously. This circuit uses an M51938 IC to monitor the supply voltage if a voltage level less than 4.25 V is detected. The reset time is approximately 128 ms.

+5 V

+5 V

Vcc

OUT

RSTIN

M51938FP (IC6) +

RESET

RSTOUT

E05A92 (IC3)

C

Figure 2-28. Reset Circuit 2.2.1.2 Bus Control Circuit The MB86930 CPU outputs the R/W (read/write) signal, AS (address strobe) signal, and the BE0, BE1, BE2, and BE3 signals (byte enables) to the ASIC E05A91. The ASIC E05A91 uses these signals to generate the RD (read strobe) signal, WR (write strobe) signal, and READY signal.

R/W AS

CPU MB86933H (IC1)

BE0-3 READY

Address Bus

Data Bus

E05A91 (IC2)

RD

WR

Figure 2-29. Bus Control Circuit

2-20

Rev. B

EPL-5500 Service Manual

Operating Principles

2.2.1.3 Interrupt Control The ASIC E05A93 determines the priority level of the interrupt and outputs it to terminals IRL0 IRL3. Then an interrupt is sent to the CPU. When the IRL0-3 value is 1111b, the CPU process is a non-maskable interrupt process. When the IRL0-3 value is 0000b, the CPU process is a standard process. When the IRL0-3 is any other value, the CPU process is a maskable interrupt process.

2.2.1.4 DRAM Management The video controller uses DRAMs for the system RAM and for the V-RAM. In this printer, a standard two 512K × 16 DRAMs are mounted in locations IC17 and IC18, providing a total of 1MB. CN2 SIMM sockets are provided for optional SIMM memory modules. These SIMM sockets can use 1, 2, 4, 8, 16, and 32 MB SIMMs (32-bit bus).

The DRAMs (including optional SIMMs) are managed by the ASIC E05A91. E05A91 outputs MA0-10 (memory address), RAS/CAS, and WE signals.

RAS1,2 RAS0 DWE DRAM (IC17)

E05A91 (IC2)

DRAM (IC18)

SIMM

CAS0,1,2,3 MA0-10 CPU DATA BUS

Figure 2-30. DRAM Management

Rev. B

2-21

Operating Principles

EPL-5500 Service Manual

2.2.1.5 Parallel Interface Circuit Figure 2-31 shows a circuit block diagram of the parallel interface. Data sent from the host computer is latched within the E05A93 by the STROBE signal. The E05A93 outputs a BUSY signal automatically to stop the host computer from sending additional data. The CPU resets the BUSY signal after reading the data from the E05A93, so that the printer is ready to receive more data from the host computer.

DATA

STROBE

Latch

E05A93 (IC4)

BUSY

Figure 2-31. Parallel Interface Circuit

2-22

Rev. B

EPL-5500 Service Manual

Operating Principles

2.2.1.6 Video Interface The ASIC E05A92 maps the SRAM into a memory space different from the system memory. The CPU transmits data from the V-RAM (in the system RAM) to the SRAM using the ASIC E05A92.

The ASIC cell converts the image data in the SRAM from parallel to serial, synchronizes it, and then transmits it to the engine controller board. In other words, the SRAM is a temporary buffer used to transmit the image data to the engine controller board. This serial image data is called the VIDEO signal of video interface.

The signal line of the internal video interface circuit (the C125 MAIN board and engine controller board) can be broadly divided into four groups. The first group (PRINT, CPRDY, EPRDY, and PRDY) gives the status of either the video controller or engine controller and indicates whether they are ready to communicate with each other or ready to start the printing operation. The second group (VSYNC, HSYNC) is the synchronizing signal for the printing operation. The third group (VIDEO) is the serial video data signal. The fourth group (CMD, SRCLK, CTBSY, and ETBSY) is used to transfer the commands (from the video controller) or the status (from the engine controller) for printer mechanism control. Except for VIDEO, PRINT, VSINC, and HSYNC, all signals are controlled by ASIC E05A93.

This printer has BiRITech and EMGTech functions standard. These functions modify the VIDEO signal with the ASIC E05A92.

Rev. B

2-23

Chapter 3

Disassembly and Assembly

Table of Contents 3.1 GENERAL INFORMATION 3-1 3.1.1 Precautions for Disassembly/Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1.2 Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1.3 Small Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.1.4 Service Checks after Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3.2 DISASSEMBLY AND ASSEMBLY 3-4 3.2.1 Housing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3.2.1.1 Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 3.2.2 Removal of the Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3.2.2.1 Main Board (C169 MAIN-B Board) Removal. . . . . . . . . . . . . . . . . 3-5 3.2.3 Disassembling the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.2.3.1 Optical Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3.2.3.2 Image Transfer Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 3.2.3.3 Upper Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 3.2.3.4 High-Voltage Supply Board (PWB-F) Removal . . . . . . . . . . . . . . 3-10 3.2.3.5 Power Supply Unit (PWB-E) Removal. . . . . . . . . . . . . . . . . . . . . 3-11 3.2.3.6 Fusing Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 3.2.3.7 Fusing Unit Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 3.2.3.8 Main Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 3.2.3.9 Paper Take-Up Sensor and Paper Take-Up Solenoid Removal. 3-21 3.2.3.10 Paper Take-Up Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

List of Figures Figure 3-1. Removing the Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Figure 3-2. Removing the Shield Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Figure 3-3. Removing the C169 MAIN-B Board . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Figure 3-4. Removing the Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 Figure 3-5. Removing the Image Transfer Unit -1. . . . . . . . . . . . . . . . . . . . . . . . 3-7 Figure 3-6. Removing the Image Transfer Unit -2. . . . . . . . . . . . . . . . . . . . . . . . 3-7 Figure 3-7. Moving the Image Transfer Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Figure 3-8. Reinstalling the Electrode Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Figure 3-9. Removing the Harness Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Figure 3-10. Removing the Upper Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Figure 3-11. Removing the PWB-F Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 Figure 3-12. Removing the PWB-F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 Figure 3-13. Removing the PWB-E Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 Figure 3-14. Removing the PWB-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 Figure 3-15. Gear and Spring Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Figure 3-16. Removing the Fusing Guide Plate . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Figure 3-17. Removing the Harness Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 Figure 3-18. Removing the Fusing Entrance Guide . . . . . . . . . . . . . . . . . . . . . 3-13 Figure 3-19. Removing the Fusing Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Figure 3-20. Roller Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14 Figure 3-21. Removing the Heater Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 Figure 3-22. Removing the Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 Figure 3-23. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Figure 3-24. Removing the Paper Separator . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 Figure 3-25. Paper Exit Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 Figure 3-26. Removing the G-Rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 Figure 3-27. Removing the Upper Fusing Roller . . . . . . . . . . . . . . . . . . . . . . . 3-18 Figure 3-28. Removing the Lower Fusing Roller . . . . . . . . . . . . . . . . . . . . . . . 3-19 Figure 3-29. Removing the Thermal Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 Figure 3-30. Removing the Motor Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 Figure 3-31. Removing the Main Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 Figure 3-32. Removing the Ground Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 Figure 3-33. Removing the Paper Guide ASSY. . . . . . . . . . . . . . . . . . . . . . . . 3-21 Figure 3-34. Removing the Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22 Figure 3-35. Removing the Paper Take-Up Roller. . . . . . . . . . . . . . . . . . . . . . 3-22

List of Tables Table 3-1. Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Table 3-2. Screw Types and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Table 3-3. Checks after Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

EPL-5500 Service Manual

Disassembly and Assembly

3.1 GENERAL INFORMATION This chapter describes disassembly/assembly procedures to be used for replacing the main assemblies of the EPL-5500.

3.1.1 Precautions for Disassembly/Assembly Follow the precautions below when disassembling/assembling the printer.

WARNING ❒ Disconnect the power cord before disassembling/assembling the printer. ❒ Be sure to handle the fusing unit carefully, because the unit remains hot for a while after the printer stops printing. ❒ If it is necessary to plug in the power cord and operate the printer after disassembling it, please be careful of the following: 1. Keep your hands and clothing well away from operating or rotating parts (such as rollers, fan motors, etc.).

2. Never touch electric terminals or high-voltage components (such as the charger and the high voltage unit).

CAUTION ❒ Do not disassemble the photoconductor unit and toner cartridge. ❒ If the photoconductor unit is removed from the printer, do not place it in direct sunlight. ❒ Do not disassemble the optical unit. ❒ Never turn power on if the optical unit is not installed. ❒ To prevent damage to ICs from static electricity, do not touch the ICs on the circuit board or the terminals of peripheral electrical components with your hands. ❒ Use only the recommended tools to ensure safe and efficient maintenance work.

Inappropriate tools may damage the machine. ❒ Never open the upper unit until the main motor stops completely. Otherwise, the gears may be damaged. ❒ When transporting the printer, remove the photoconductor unit and toner cartridge from the printer. ❒ When transporting the printer a long distance, pack up the printer using the original packing material.

3.1.2 Tools Use the tools listed in Table 3-1 for disassembling/assembling the printer and for troubleshooting.

Table 3-1. Tools Name

Rev. B

Commercially Available?

Part No.

Philips screwdriver no. 2

Yes

B743800200

Regular screwdriver

Yes

B743000100

Tweezers

Yes

B641000100

Soldering iron

Yes

B740200100

Round-nose pliers

Yes

B740400100

3-1

Disassembly and Assembly

EPL-5500 Service Manual

3.1.3 Small Parts In the following sections, abbreviations are used for small parts, such as screws and washers.

Tables 3-2 and 3-3 list these abbreviations.

Table 3-2. Screw Types and Abbreviations Standard No.

Type

Appearance Size (mm)

Length (mm)

4

8

3

6/8

3

6/8/14

3

6/8/10/12

3

8

3

8

3

8

CB #1

CB(S)(P1) #2

CBS #3

CCS #4

CCB #5

CBB #6

CBS(O) #7

Pin E-Ring

3-2

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.1.4 Service Checks after Repair Check the repaired unit using the following list on completion of servicing.

Table 3-3. Checks after Repair Item Operation

Adjustment

Location

Checkpoint

Control panel

Do all LEDs and button function normally?

Heater lamp

Does the heater lamp turn on normally?

Test print (status sheet)

Is the test print performed normally?

Data print

Does data print in all modes?

Print position

Is the gap between the top edge of the paper and the horizontal line in the status sheet print exactly 29.6 mm (1.17 inch).

ROM version

Is it the latest version?

Cleaning

Is toner and dust removed from the paper path?

Is the paper take-up roller cleaned?

Is the roller in the fusing unit cleaned?

Is the outer surface of the printer clean?

Packing

Is the consumable removed from the printer?

Is the unit packed securely?

Are accessories packed also?

Rev. B

Check

3-3

Disassembly and Assembly

EPL-5500 Service Manual

3.2 DISASSEMBLY AND ASSEMBLY This section describes and illustrates the procedures for removing and disassembling the components of the EPL-5500. Cleaning is described in Chapter 6. The assembly procedures are not described, except for special notes where necessary, because assembly can be accomplished by performing disassembly in reverse.

3.2.1 Housing Removal This section describes how to remove the cases and the rear frame.

3.2.1.1 Case Removal 1.

Push the upper unit lock release button and open the upper unit.

2.

Remove each cover in the following turn.

ASSEMBLY POINTS When reinstalling each cover, securely insert the protrusions of the cover into the cutouts of the printer frame.

4. Rear Cover

3. Operation Cover

Upper unit Upper unit lock release button

2. Front Cover

1. Left cover

Figure 3-1. Removing the Housing

3-4

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.2.2 Removal of the Controller Section The control section is comprised of the controller board (the C169 MAIN-B Board).

3.2.1.1 Main Board (C169 MAIN-B Board) Removal

CAUTION Before you remove the video controller board, make sure that you remove any optional LocalTalk/ serial board or Type-B EX box.

1.

Turn the printer so that its right side faces you.

2.

Remove the right cover.

3.

Remove 2 screws (#3), and then remove the shield case.

Figure 3-2. Removing the Shield Case 4.

Disconnect all connectors on the C169 MAIN-B Board.

5.

Remove the 5 screws (#4) for the C169 MAIN-B Board.

6.

Remove the C169 MAIN-B Board.

Figure 3-3. Removing the C169 MAIN-B Board

Rev. B

3-5

Disassembly and Assembly

EPL-5500 Service Manual

3.2.3 Disassembling the Engine This section describes disassembling the engine, including the high voltage unit (PWB-F) and power supply board (PWB-E).

3.2.3.1 Optical Unit Removal

CAUTION ❒ Do not touch the optical unit except at the time of replacement. ❒ Do not open the unit under any conditions. ❒ Do not remove the circuit board from the optical unit under any conditions.

1.

Open the top cover.

2.

Remove the right cover, left cover, and front cover. (Refer to Section 3.2.1.1.)

3.

Remove the cover shield plate.

4.

Disconnect connector CN205 and CN210 from the C169 MAIN Board.

4.

Remove the 6 screws (#4) from the optical unit.

5.

Remove the optical unit.

Figure 3-4. Removing the Optical Unit

3-6

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.2.3.2 Image Transfer Unit Removal 1.

Open the top cover.

2.

Remove the harness cover A. (Refer to Section 3.2.3.3.)

3.

Remove the 2 screws (#5) and holders at both ends of the image transfer unit.

Figure 3-5. Removing the Image Transfer Unit - 1 4.

Disconnect the 2 connectors and remove the unit.

Figure 3-6. Removing the Image Transfer Unit - 2

Rev. B

3-7

Disassembly and Assembly

EPL-5500 Service Manual

ASSEMBLY POINTS After reinstalling the image transfer unit, check that the unit smoothly moves up and down.

Figure 3-7. Moving the Image Transfer Unit

5.

Remove the remove the electrode comb.

ASSEMBLY POINTS When reinstalling the electrode comb, be careful of the direction of installation. Install the electrode comb so that the terminal of the comb faces the image transfer roller drive gear.

Figure 3-8. Reinstalling the Electrode Comb

3-8

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.2.3.3 Upper Unit Removal 1.

Open the upper unit.

2.

Remove the right cover and left cover. (Refer to Section 3.2.1.1.)

3.

Disconnect connectors CN202, CN208, and CN211 from the C169 MAIN-B.

4.

Remove harness covers A and B, and pull out the CN1 of the PWB-E board.

5.

Remove the image transfer unit. (Refer to Section 3.2.3.2.)

A B

Figure 3-9. Removing the Harness Cover 6.

Slide and remove the unit as in the illustration.

Figure 3-10. Removing the Upper Unit

Rev. B

3-9

Disassembly and Assembly

EPL-5500 Service Manual

3.2.3.4 High-Voltage Supply Board (PWB-F) Removal 1.

Open the top cover.

2.

Remove 1 screw (#5) from the PWB-F cover.

3.

Remove the PWB-F cover.

Figure 3-11. Removing the PWB-F Cover 4.

Remove the 4 screws (#5) from the PWB-F board.

5.

Disconnect 2 connectors.

6.

Remove the PWB-F board.

Figure 3-12. Removing the PWB-F

3-10

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.2.3.5 Power Supply Unit (PWB-E) Removal 1.

Remove the upper unit. (Refer to Section 3.2.3.3.)

2.

Remove 6 screws (#4:2, #7:2), and remove the PWB-E cover.

Figure 3-13. Remove the PWB-E Cover 3.

Disconnect connector CN207 from the C169 MAIN-B Board.

4.

Remove 4 screws (#4) and 2 screws (#6), and remove the PWB-E.

Figure 3-14. Removing the PWB-E

Rev. B

3-11

Disassembly and Assembly

EPL-5500 Service Manual

3.2.3.6 Fusing Unit Removal 1.

Open the top cover. (Refer to Section 3.2.3.3.)

2.

Remove the image transfer unit. (Refer to Section 3.2.3.2.)

3.

Remove 1 screw (#5), and remove the drive tension section of the fusing unit.

4.

Remove the transport gear.

5.

Release the hook of the spring and remove the drive gear section of the fusing unit.

ASSEMBLY POINTS When rehooking the spring, be sure to hook it at the correct position.

drive gear section of the Fusing unit drive transport gear hook of the spring

drive tension section of the Fusing unit

Figure 3-15. Gear and Spring Position

6.

Remove 4 screws (#5), and remove fusing guide plate.

Figure 3-16. Removing the Fusing Guide Plate

3-12

Rev. B

EPL-5500 Service Manual 7.

Disassembly and Assembly

Remove the harness cover.

Figure 3-17. Removing the Harness Cover 8.

Remove the fusing entrance guide.

Figure 3-18. Removing the Fusing Entrance Guide

Rev. B

3-13

Disassembly and Assembly

EPL-5500 Service Manual

10. Remove 4 screws (#5), and remove the fusing unit.

Figure 3-19. Removing the Fusing Unit

ASSEMBLY POINTS After reinstalling the fusing unit, check the direction of the bushings on the paper exit roller and the connection condition between the roller and the ground plate.

Figure 3-20. Roller Position

3-14

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.2.3.7 Fusing Unit Disassembly This section describes how to remove the paper exit sensor, heater lamp, lower fusing roller, and upper fusing roller.

Heater Lamp

CAUTION Do not touch the glass surface of the lamp with your bare hands.

1.

Remove the fusing guide plate. (Refer to Section 3.2.3.6.)

2.

Pull the heater lamp out of the lamp holder from the front side.

Figure 3-21. Removing the Heater Lamp

ASSEMBLY POINTS When reinstalling the lamp, position its voltage indication to the left side (non-gear end.).

Rev. B

3-15

Disassembly and Assembly

EPL-5500 Service Manual

Thermistor 1.

Remove the fusing unit. (Refer to Section 3.2.3.6.)

2.

Remove the 1 screw (#4), and remove the thermistor.

Figure 3-22. Removing the Thermistor

ASSEMBL POINTS When reinstalling the thermistor, wire the harness as shown below.

Figure 3-23. Wiring

3-16

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

Paper Separator 1.

Remove the fusing unit. (Refer to Section 3.2.3.6.)

2.

Release the lock of the holder and remove the 3 paper separator.

Figure 3-24. Removing the Paper Separator

ASSEMBLY POINTS When reinstalling the paper separators, be careful of these positions as the middle one differs from others.

Paper Exit Sensor 1.

Remove the fusing unit. (Refer to Section 3.2.3.6.)

2.

Remove the paper exit sensor.

Figure 3-25. Paper Exit Sensor

Rev. B

3-17

Disassembly and Assembly

EPL-5500 Service Manual

Fusing Roller 1.

Remove the fusing unit. (Refer to Section 3.2.3.6.)

2.

Remove the 2 G-rings from the fusing unit.

Figure 3-26. Removing the G-Rings

CAUTION When reinstalling the G-rings: ❒ Be careful of the direction. ❒ Securely position them into the grooves of the fusing roller.

3.

Remove the upper fusing roller drive gear.

4.

Remove the upper fusing roller.

Figure 3-27. Removing the Upper Fusing Roller

3-18

Rev. B

EPL-5500 Service Manual 5.

Disassembly and Assembly

Take out the lower fusing roller.

Figure 3-28. Removing the Lower Fusing Roller Thermal Fuse 1.

Remove the fusing unit. (Refer to Section 3.2.3.6.)

2.

Remove 2 screws (#5), and remove the thermal fuse.

Figure 3-29. Removing the Thermal Fuse

Rev. B

3-19

Disassembly and Assembly

EPL-5500 Service Manual

3.2.3.8 Main Motor Removal 1.

Remove the housing components. (Refer to Section 3.2.1.1.)

2.

Remove 1 screw (#4) which fixing the motor bracket and the 2 screws (#2) which fixing the main motor, and remove the main motor together with the bracket.

Motor bracket Screw (#2)

Screw (#4)

Figure 3-30. Removing the Motor Bracket

Motor bracket

Main motor

Figure 3-31. Removing the Main Motor

3-20

Rev. B

EPL-5500 Service Manual

Disassembly and Assembly

3.2.3.9 Paper Take-Up Sensor and Paper Take-Up Solenoid Removal 1.

Remove the housing components. (Refer to Section 3.2.1.1.)

2.

Turn over the printer on its back.

3.

Remove the 4 screws (#6), and remove the ground plate.

4.

Turn up the lifting plate.

Screw (#6)

Ground plate

Figure 3-32. Removing the Ground Plate

ASSEMBLY POINT When turnning up the lifting plate, be carefull with the grounding plate which overlapping the lifting plate.

5.

Remove the 2 screws (#6), and remove the paper guide assembly.

6.

Remove the paper take-up sensor and the paper take-up solenoid from the assembly.

Lifting plate

Turn up the plate

Screw (#6)

Paper guide ASSY.

Figure 3-33. Removing the Paper Guide ASSY.

Rev. B

3-21

Disassembly and Assembly

EPL-5500 Service Manual

3.2.3.10 Paper Take-Up Roller Removal 1.

Remove the main motor. (Refer to Section 3.2.3.8.)

2.

Remove the paper guide assembly. (Refer to Section 3.2.3.9.)

3.

Remove the 6 screws (#4:2, #5:4), and remove the left frame.

4.

Remove the 2 gears (GEAR 29/65T, GEAR 22/57T), specified in the figure below.

Remove Gears (2)

Paper Take-up Roller Shaft

Slide out

Figure 3-34. Removing the Gears 5.

At the bottom of the printer, remove the E-ring fixing the paper take-up roller shaft.

6.

Unhock the paper take-up roller and slide the shaft to the end of the shaft where the driven gear is attached, then remove the paper take-up roller.

ASSEMBLY POINT When removing the paper take-up roller from the shaft, be sure not to lose the pin.

Paper Take-up Roller

E-Ring

Paper Take-up Roller Shaft

Figure 3-35. Removing the Paper Take-Up Roller 3-22

Rev. B

Chapter 4

Adjustment

Table of Contents 4.1 ADJUSTMENT 4-1 4.1.1 Print Position Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

List of Figures Figure 4-1. Print Position Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

EPL-5500 Service Manual

Adjustments

4.1 ADJUSTMENTS This section describes the adjustment procedures for the EPL-5500. You must perform these adjustments after servicing the printer, especially when any component or part is replaced.

4.1.1 Print Position Adjustment You can adjust the vertical print position on a sheet of paper by turning the image synchronizing volume control on the main board (C169 MAIN-B). After replacing a main board, be sure to adjust the print position using the procedure below.

1.

Print a status sheet.

2.

Check that the registration gap between the leading edge of the sheet and the horizontal line printed on the page is within the following range: 29.6 ± 2.5 mm (1.17 ± 0.01 inches) for a status sheet page on A4/letter paper: If the gap is not correct, adjust the print position as described in the next few steps.

29.6 mm

Leading Edge

EPSON EPL-5500 Status Sheet Default Settings

Figure 4-1. Print Position Adjustment 3.

Turn printer power off.

4.

Open the right cover and shield plate. (See Chapter 3.)

5.

Adjust the image synchronizing adjustment volume (VR201) on the main board (C169 MAIN-B) so that the gap for the print position of the horizontal line (down from the top edge of the sheet) becomes 29.6 mm (1.17 inches) .

•Turn VR201 clockwise to increase the gap for the print position of the horizontal line.

•Turn VR201 counterclockwise to decrease the gap.

6.

Turn on the printer.

7.

Print a status sheet again to check the print position.

8.

Repeat steps 5 to 7 until the print position is 29.6 mm (1.17 inches).

9.

Reattach the shield plate and right case.

Rev. B

4-1

Chapter 5

Troubleshooting

Table of Contents 5.1 OVERVIEW

5-1

5.2 SELF-DIAGNOSTIC FUNCTION 5-1 5.2.1 SOFT ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5.2.2 Service Call Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.3 TROUBLESHOOTING 5-4 5.3.1 Troubleshooting of Abnormal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 5.3.2 Print Quality Anomaly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

List of Tables Table 5-1. SOFT ERROR Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Table 5-2. Service Call A Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Table 5-3. Service Call B Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Table 5-4. Symptoms and Reference Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Table 5-5. The Printer Does Not Operate at All . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Table 5-6. Both LED Lights Do Not Come On. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Table 5-7. The LED Does Not Come On (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 Table 5-8. The LED Does Not Come On (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 Table 5-9. The LED Does Not Come On (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 Table 5-10. The LED Does Not Come On (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Table 5-11. Software Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Table 5-12. Fusing Unit Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Table 5-13. The Fan Motor Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Table 5-14. Scanner Motor Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Table 5-15. Laser Light Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Table 5-16. Communication Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Table 5-17. EEPROM Write Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Table 5-18. Engine Initialize Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Table 5-19. C1000 or C1001 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Table 5-20. C1002 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Table 5-21. C1003 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Table 5-22. C1130 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Table 5-23. C1170 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Table 5-24. C1180 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Table 5-25. C1300 or C1310 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 Table 5-26. C1320 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 Table 5-27. C1990 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 Table 5-28. Print Quality Anomaly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

EPL-5500 Service Manual

Troubleshooting

5.1 OVERVIEW The EPL-5500 has a sophisticated, built-in, self-diagnostic function that reduces the troubleshooting time by identifying failed parts or components. This self-diagnostic test identifies the troubleshooting problems for page printers, in which even a trivial failure can result in a serious print quality problem.

5.2 SELF-DIAGNOSTIC FUNCTION This section describes the self-diagnostic function in which the controller automatically checks the operating conditions of each component. If any abnormality is detected, the printer prints an error message on the status sheet or displays a message with the LED lights.

5.2.1 SOFT ERROR When the printer detects an error relating to a software operation, the printer indicates it as "SOFT ERROR" by slowly flashing the red LED light. By pressing the button on the control panel, the printer prints the status sheet with error information. Table 5-1 lists the soft error codes.

Table 5-1. SOFT ERROR Code List Error Code

Error Condition

C0001

CPU error (reserved)

C0002

CPU error (programming command error)

C0003

CPU error (illegal instruction)

C0004

CPU error (unsupported FPU instruction)

C0007

CPU error (address misalignment)

C0009

CPU error (reserved)

C0010

CPU error (tag overflow)

C0017 to 31 CPU error (unsupported interrupt) C0036

CPU error (unsupported coprocessor instruction)

C0128 to 254 CPU error (unimplemented instruction) C0255

CPU error (break error)

Axxxx

Software error

Bxxxx

Software error

Dxxxx

Software error

Fxxxx to Zxxxx Software error

Rev. B

5-1

Troubleshooting

EPL-5500 Service Manual

5.2.2 Service Call Error If the printer detects a fatal error that unrecoverable by the user, the printer indicates it with the LED lights as "Service Call Error". There are two types of "Service Call Error" as explained below, and each error is indicated by the LED lights of the control panel in different manner.

Service Call A Errors Indication:

First, yellow and red LED lights go on and off twice alternately. Then, both yellow and red LED lights go on and off a number of times correspondning to the error number in the table 5-2.

Example:

"Fan motor error" (error number = 2) Order

LED (Yellow)

LED (Red)

1

ON

OFF

Short

2

OFF

ON

Short

3

ON

OFF

Short

4

OFF

ON

Short

5

OFF

OFF

Long

6

ON

ON

Short

7

OFF

OFF

Short

8

ON

ON

Short

9

OFF

OFF

Long

Interval

State Service call error indication

Error code = "2" (LED on for 2 times)

Table 5-2. Service Call A Error Error No.

Error Code

Error Condition

1

E0003

Fusing unit error

2

E0005

Fan motor error

3

E0006

Scanner mirror motor error

4

E0009

Laser light error

5

E0014

Communication error for engine controller and video controller

6

C1200

EEPROM write error

7

C1400

Engine initialize error

Service call B error Indication:

First, yellow and red LED lights go on and off three times alternately to indicate that the printer start to display "Service Call B Error". The error number of "Service Call B Error" consists of 4 digits number, and each LED light indicates corresponding number from 4th digit to 1st digit in the following order: Yellow LED: Red LED: Yellow LED: Red LED:

5-2

4th digit (X---) 3rd digit(-X--) 2nd digit (--X-) 1st digit (---X)

Rev. B

EPL-5500 Service Manual

Troubleshooting

Note that if any digit of corresponding error number is "0", both yellow and red LED lights go on and off once at the same time.

Rev. B

5-3

Troubleshooting Example:

EPL-5500 Service Manual "Standard ROM error" (error number = 1130)

Order

LED (Yellow)

LED (Red)

1

ON

OFF

Short

2

OFF

ON

Short

3

ON

OFF

Short

4

OFF

ON

Short

5

ON

OFF

Short

6

OFF

ON

Short

7

OFF

OFF

Long

8

ON

OFF

Short

9

OFF

OFF

Long

10

OFF

ON

Short

11

OFF

OFF

Long

12

ON

OFF

Short

13

OFF

OFF

Short

14

ON

OFF

Short

15

OFF

OFF

Short

16

ON

OFF

Short

17

OFF

OFF

Long

18

ON

ON

Short

19

OFF

OFF

Long

Interval

State Service Call Error B indication

4th digit = "1"

Error code = "1130"

3rd digit = "1"

2nd digit = "3"

1st digit = "0"

Table 5-3. Service Call B Error

5-4

Rev. B

EPL-5500 Service Manual

Troubleshooting

Error No. Error Code

Error Condition

4

3

2

1

1

0

0

0

C1000

RAM Validation error

1

0

0

1

C1001

System RAM check error

1

0

0

2

C1002

Standard RAM error

1

0

0

3

C1003

Optional RAM (SIMM) error

1

1

3

0

C1130

Standard ROM error

1

1

7

0

C1170

Optional NLSP fonts ROM error

1

1

8

0

C1180

Optional ROM SIMM error

1

3

0

0

C1300

Optional Type-B I/F error

1

3

1

0

C1310

Unsupported Type-B I/F installed

1

3

2

0

C1320

LocalTalk I/F error

1

9

9

0

C1999

Other hardware error

Rev. B

5-5

Troubleshooting

EPL-5500 Service Manual

5.3 TROUBLESHOOTING This section describes troubleshooting abnormal operations and print quality problems.

5.3.1 Troubleshooting of Abnormal Operation This section describes how to detect malfunctions, and determine the cause, and it suggests what actions to take for various types of malfunctions. Each paragraph refers you to a detailed troubleshooting table.

Table 5-4. Symptoms and Reference Tables Symptom

Printer Condition

Reference Table

The printer does not operate at all

The heater lamp in fusing unit does not come on, and so neither LED light is on.

5-5

Yellow and LED lights do not comeThe heater lamp in the fusing unit comes on, but on the LED lights are not on.

5-6

LED light is on

The LED light goes on after power on.

5-7

The LED light goes on when printing starts.

5-8

The LED light is on when printing starts from the lower paper cassette.

5-9

Paper jam.

5-10

Software error

The printer indicates a software error on the status sheet.

5-11

Fusing unit error

A fusing unit error is displayed.

5-12

Fan motor error

A fan motor error is displayed.

5-13

Scanner motor error

A scanner motor error is displayed.

5-14

Laser light error

A laser light error is displayed

5-15

Communication error for engine

A communication error is displayed.

5-16

EEPROM write error

An EEPROM write error is displayed.

5-17

Engine initialize error

An engine initialize error is displayed.

5-18

Error code C1000 or C1001

A C1000 or C1001 is displayed.

5-19

Error code C1002

A C1002 is displayed.

5-20

Error code C1003

A C1003 is displayed.

5-21

Error code C1130

A C1130 is displayed.

5-22

Error code C1170

A C1170 is displayed.

5-23

Error code C1180

A C1180 is displayed.

5-24

Error code C1300 or C1310

A C1300 or C1310 is displayed.

5-25

Error code C1320

A C1320 is displayed.

5-26

Error code C1990

A C1990 is displayed.

5-27

5-6

Rev. B

EPL-5500 Service Manual

Troubleshooting

Table 5-5. The Printer Does Not Operate at All Cause

Step

Checkpoint

Finding

Solution

Connector CN207 on the C169 MAIN-B Board may be disconnected.

1

Is connector CN207 on the C169 MAIN-B Board disconnected?

Yes

Connect CN207 on the board.

The fuse on the PWB-E board may be blown.

2

Has the fuse blown on the PWB-E board?

Yes

3

With power on, is there an output of +5 VDC between pin 4 (+) and pin 3 (–) for CN207 on C169 MAIN-B Board?

PWB-E board may be dead.

C169 MAIN-B Board may be dead.

4

—

No

—

Replace the fuse.

Replace the PWB-E board.

Replace the C169 MAIN-B Board.

Table 5-6. Both LED Lights Do Not Come On Cause

Step

Checkpoint

Finding

Solution

The C169 MAIN-B Board may be dead.

1

If you change the C169 MAIN-B Board, do the LEDs come on?

Yes

Replace the C169 MAIN-B Board.

Table 5-7. The LED Does Not Come On (1)

Rev. B

5-7

Troubleshooting

EPL-5500 Service Manual

Cause

Step

Checkpoint

Finding

Solution

The interlock switch lever is bad.

1

Does the switch turn on when the case is closed?

No

Replace the interlock lever.

The interlock switch may be dead.

2

Does the switch toggle?

(Check with a multimeter.)

No

Replace the interlock switch.

3

With power on, is there an output of +24 VDC between pin 1 (+) and pin 2 (–) for CN207 on C169 MAIN-B board?

No

The paper take-up sensor flag position may be incorrect.

4

Is the paper take-up sensor flag position OK?

No

Reposition the paper take-up sensor flag.

The paper exit sensor flag position may be incorrect.

5

Is the paper exit sensor flag position OK?

No

Reposition the paper exit sensor flag.

The paper take-up sensor connector may be disconnected.

6

Is the paper take-up sensor connector disconnected?

Yes

The paper connector disconnected.

7

Is the paper exit sensor connector disconnected?

Yes

The PWB-E board may be dead.

exit may

sensor be

The paper exit sensor may be dead.

8

The paper take-up sensor may be dead.

9

5-8

— —

Replace the PWB-E board.

Connect it.

Connect it.

— —

Replace it.

Replace it.

Rev. B

EPL-5500 Service Manual

Troubleshooting

Table 5-8. The LED Does Not Come On (2) Cause

Step

Checkpoint Disconnect connector CN203 on the C169 MAIN-B Board and check the coil resistance between pin 5 and pin 6 on the dis- connected cable side of the connector, using a multimeter.

Is the resistance approximately 80 ohms?

The paper take-up solenoid coil may be open or shorted.

1

If the coil is shorted, check the solenoid drive circuit using the procedure below: 1. Set the multimeter for voltage.

2. Place the (–) terminal of the multimeter on pin 5 of connector CN207 on the C169 MAIN-B Board.

3. Place the (+) terminal of the multimeter on pin 6 (GND).

With power on, does the multimeter detect any current?

Finding

Solution Replace the paper take-up solenoid.

No

Replace the paper take-up solenoid and the C169 MAIN-B Board.

Yes

Continued on next page

Rev. B

5-9

Troubleshooting

EPL-5500 Service Manual

Table 5-8. The LED Does Not Come On (2) (Continued) Cause

Step

Disconnect connector CN206 on the C169 MAIN-B Board, and check the coil resistance between: pin 1 and pin 2; pin 3 and pin 4 (2 points total) on the disconnected cable side of the connector, using a multimeter.

Pin 1 — Pin 2 Pin 3 — Pin 4 Are the resistances of all four points approximately 10 ohms?

The main motor coil may be open or shorted.

2

Paper take-up sensor flag position may be incorrect.

3

Paper take-up roller may be bad.

4

5-10

Checkpoint

Finding

Solution Replace motor.

the

main

No

Replace the C169 MAIN-B Board.

If any coil is shorted, check the main motor drive circuit using the following procedure: 1. Set the multimeter to voltage.

2. Place the (–) terminal of the multimeter on pins 1, 2, 3, or 6 of connector CN206 on the C169 MAIN-B board.

3. Place the (+) terminal on pin 2 of connector CN207 of the C169 MAIN-B Board (GND).

With power on, does the multimeter detect current?

Yes

Is paper take-up sensor flag position incorrect?

Yes

Reseat the paper take-up sensor flag.

—

Replace the paper take-up roller.

—

Rev. B

EPL-5500 Service Manual

Troubleshooting

Table 5-9. The LED Does Not Come On (3) Cause The standard problems.

Step tray

has

1

2

Rev. B

Is the standard tray OK? Disconnect junction connector near the solenoid and check the coil resistance between pin 1 and pin 2 on the disconnected solenoid side of the connector, using a multimeter. Is the resistance approximately 80 ohms?

The paper take-up solenoid coil for the lower paper cassette may be open or shorted.

The paper take-up roller in the lower paper cassette may be bad.

Checkpoint

If the coil is shorted, check the solenoid drive circuit using the following procedure: 1. Set the multimeter to voltage.

2. Place the (–) terminal on pin of connector CN2 on the lower paper cassette board.

3. Place the (+) terminal on of ground of CN1.

With power on, does the multimeter detect any current?

Finding No

Refer to Table 5-8.

Replace the paper take-up solenoid.

No

Replace the paper take-up solenoid and circuit board of lower paper cassette.

Yes

— 3

Solution

—

Replace the paper take-up roller.

5-11

Troubleshooting

EPL-5500 Service Manual

Table 5-10. The LED Does Not Come On (4) Cause

Step

The consumables may not be installed.

1

The paper take-up roller may be bad.

2

The paper feed roller may be bad.

The fusing unit may be bad.

Checkpoint

Finding

Are the consumables installed?

Solution

No

Install consumables.

the

Does paper always jam in paper take-up roller area?

Yes

Replace the paper take-up roller.

3

Does paper always jam in the paper feed roller area?

Yes

Replace the paper feed roller.

4

Does paper always jam in the fusing unit?

Yes

Replace it.

Table 5-11. Software Errors Cause

Step

The C169 MAIN-B Board may be bad.

1

Checkpoint

Finding

—

—

Solution Replace it.

Table 5-12. Fusing Unit Error Cause The connector for thermistor may disconnected.

Step the be

1

The C169 MAIN-B Board may be dead.

2

The heater lamp or thermal fuse in the fusing unit may be bad.

3

The PWB-E board may be dead.

4

Checkpoint Is the connector for thermistor disconnected?

Finding the

Solution Connect it.

Yes

Does the heater lamp remain lit up until the error occurs?

Does the heater lamp come on at power on?

—

Yes

Replace the C169 MAIN-B Board.

No

Replace the heater lamp or thermal fuse in the fusing unit.

—

Replace the PWB-E board.

Solution

Table 5-13. The Fan Motor Error Cause

Step

Checkpoint

Finding

Connector CN211 on the C169 MAIN-B Board may be disconnected.

1

Is connector CN211 on the C169 MAIN-B Board disconnected?

Yes

The fan motor may be dead.

2

—

—

Connect it.

Replace it.

Table 5-14. The Scanner Motor Error

5-12

Rev. B

EPL-5500 Service Manual Cause The optical unit may be bad.

The C169 MAIN-B Board may be bad.

Rev. B

Troubleshooting Step 1 2

Checkpoint — —

Finding

Solution

—

Replace the optical unit.

—

Replace the C169 MAIN-B Board.

5-13

Troubleshooting

EPL-5500 Service Manual

Table 5-15. Laser Light Error Cause

Step

The optical unit may be dead.

1

The C169 MAIN-B Board may be dead.

2

Checkpoint

Finding

Solution

—

Replace the optical unit.

—

Replace the C169 MAIN-B Board.

Finding

Solution

—

Replace the C169 MAIN-B Board.

Finding

Solution

— —

Table 5-16. Communication Error Cause

Step

The C169 MAIN-B Board may be bad.

1

Checkpoint —

Table 5-17. EEPROM Write Error Cause

Step

The EEPROM is may be bad.

The C169 MAIN-B Board may be bad.

Checkpoint —

1

—

Replace EEPROM.

—

Replace the C169 MAIN-B Board.

Finding

Solution

—

Replace the C169 MAIN-B Board.

—

2

the

Table 5-18. Engine Initialize Error Cause

Step

The C169 MAIN-B Board may be bad.

1

Checkpoint —

Table 5-19. C1000 or C1001 Error Cause

Step

Checkpoint

Finding

The optional SIMM may be bad.

1

Is operation OK after you remove the optional SIMM?

Yes

The C169 MAIN-B Board may be bad.

2

—

Solution Replace the SIMM. Replace the MAIN-B Board.

—

C169

Table 5-20. C1002 Error Cause

Step

The C169 MAIN-B Board may be bad.

1

5-14

Checkpoint —

Finding

Solution

—

Replace the C169 MAIN-B Board.

Rev. B

EPL-5500 Service Manual

Troubleshooting

Table 5-21. C1003 Error Cause

Step

Checkpoint

Finding

The optional SIMM may be bad.

1

Is the operation OK after you remove the optional SIMM?

Yes

The C169 MAIN-B Board may be bad.

—

2

Solution Replace the SIMM.

—

Replace the MAIN-B Board.

C169

Table 5-22. C1130 Error Cause

Step

Checkpoint

Finding

Solution

The program ROMs on the C169 MAIN-B Board may be bad.

1

Is operation OK after you replace the ROM?

—

Replace the program ROMs on the C169 MAIN-B Board.

The C169 MAIN-B Board may be bad.

2

—

Replace the MAIN-B Board.

—

C169

Table 5-23. C1170 Error Cause

Step

Checkpoint

Finding

Solution

The ROM (IC11) on the C169 MAIN-B Board may be bad.

1

Is operation OK after you replace the ROM?

—

Replace the ROM (IC11) on the C169 MAIN-B Board.

—

Replace the MAIN-B Board.

The C169 MAIN-B Board may be bad.

2

—

C169

Table 5-24. C1180 Error Cause The ROM SIMM may be bad.

The C169 MAIN-B Board may be bad.

Step

Checkpoint

Finding

1

Is operation OK after you replace the ROM SIMM?

—

Replace SIMM.

the

ROM

—

Replace the MAIN-B Board.

C169

2

—

Solution

Table 5-25. C1300 or C1310 Error Cause

Step

The optional interface card (Type-B) may be bad.

1

The C169 MAIN-B Board may be bad.

Rev. B

Checkpoint

Finding

Solution

—

Replace the optional interface card or Type-B EX box.

—

Replace the MAIN-B Board.

—

2

—

C169

5-15

Troubleshooting

EPL-5500 Service Manual

Table 5-26. C1320 Error Cause

Step

The optional interface card may be bad.

1

The C169 MAIN-B Board may be bad.

2

Checkpoint — —

Finding

Solution

—

Replace the optional interface card.

—

Replace the MAIN-B Board.

C169

Table 5-27. C1990 Error Cause

Step

The C169 MAIN-B Board may be bad.

1

5-16

Checkpoint —

Finding —

Solution Replace the MAIN-B Board.

C169

Rev. B

EPL-5500 Service Manual

Troubleshooting

5.4.2 Print Quality Anomalies This section describes how to isolate possible causes of a print quality problem .

Table 5-28. Print Quality Anomalies Symptom Low image density

Possible Cause

Poor development PWB-F board Image problem

Foggy background

Part Name

transferImage unit

Check Item —

Remedy Replace board.

the

PWB-F

the transferCheck to see if theReplace surface of imagetransfer unit. transfer unit is damaged.

image

PWB-F board

—

Replace board.

the

Defective PC drum Photoconductor unit

—

Replace the photoconductor unit.

Improper print— density setting

—

Adjust the print density using printer settings.

Poor development Toner cartridge —

Replace the cartridge.

Improper charging Drum charge

Replace board.

—

the

PWB-F

toner PWB-F

the Check the wiring of theReplace PC drum charging biasphotoconductor unit. line.

Improper print— density setting

Rev. B

—

Adjust the print density in printer settings.

5-17

Troubleshooting

EPL-5500 Service Manual

Table 5-28. Print Quality Anomalies (Continued) Symptom Blank print

Possible Cause

Part Name

Check whether toner cartridge installed properly.

Poor development Imaging cartridge

Remedy theReinstall iscartridge.

the

toner

PWB-F board

—

Replace board.

the

PWB-F

Improper charging PWB-F board

—

Replace board.

the

PWB-F

transferCheck the surface ofReplace the the image transfer unit. transfer unit.

image

Poor transfer

imageImage unit

PWB-F board

Black print

Check Item

—

Replace board.

Improper print— density setting

—

Adjust the print density in SelecType.

Defective unit

—

Replace the optical unit.

Improper charging Photoconductor unit

—

Replace the photoconductor unit.

PWB-F board

—

Replace board.

the

PWB-F

Poor development Toner cartridge —

Replace cartridge.

the

toner

Replace board.

the

PWB-F

opticalOptical unit

PWB-F board

the

PWB-F

Improper print— density setting

—

Adjust the print density in SelecType

Defective unit

—

Replace the optical unit.

White/black lines andImproper charging Photoconducbands. tor unit

—

Replace the cartridge.

imaging

Poor development PWB-F board

—

Replace board.

the

PWB-F

Toner cartridge —

Replace cartridge.

the

toner

opticalOptical unit

Dirt on the fusingFusing roller roller

5-18

—

Clean the fusing roller.

Rev. B

EPL-5500 Service Manual

Troubleshooting

Table 5-28. Print Quality Anomalies (Continued) Symptom

Possible Cause

Part Name

Toner smudges onImproper charging PWB-F the back side of the sheet.

Poor development PWB-F

Check Item

Remedy

—

Replace board.

the

PWB-F

—

Replace board.

the

PWB-F

Improper fusing

Fusing unit

—

Replace the fusing unit.

Offset print

Improper fusing

Fusing unit

—

Replace the fusing unit.

White spots

Poor transfer

Rev. B

imageImage unit

transfer—

PWB-F

—

Replace the transfer unit.

image

Replace board.

PWB-F

the

5-19

Chapter 6

Maintenance

Table of Contents 6.1 MAINTENANCE 6-1 6.1.1 User Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.1.1.1 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.1.1.2 Replacement of Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 6.1.2 Service Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 6.1.2.1 Periodic Service Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 6.1.2.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

List of Figures Figure 6-1. Position of the Special Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Figure 6-2. Cleaning the Electrode Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

List of Tables Table 6-1. Periodic Service Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Table 6-2. Cleaning Parts and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-ii

Rev. A

EPL-5500 Service Manual

Maintenance

6.1 MAINTENANCE The EPL-5500 is a page printer that uses an electrophotographic printing method. Unlike most impact or ink-jet printers, the key components in the electrophotographic process are integrated into two expendable units (the photoconductor unit and toner cartridge).

Therefore, periodic replacement of them is essential to ensure high-quality output. Other maintenance items are also described in this chapter, which is divided into two sections: user maintenance (preventive maintenance) and service maintenance (repair).

6.1.1 User Maintenance Users can achieve maximum print quality from the printer by following the procedures below:

6.1.1.1 Cleaning This section describes the cleaning required for optimal print quality. ❒

External Cleaning

Be sure to disconnect the printer from the power outlet before cleaning it. Wipe the cover and external parts of the printer with a damp cloth that has been soaked in a neutral cleaning solution. ❒

Internal Cleaning

Be sure the printer has been disconnected from the power supply and that the fusing unit has cooled down. If the electrode comb of the image transfer unit is dirty, clean it with a special tool, using the following steps:

Figure 6-1. Position of the Special Tool 1.

Pick up the electrode comb cleaner from the upper unit.

2.

Wipe the electrode comb surface from end to end with the electrode comb cleaner several times.

Electrode Comb Cleaner Cleaner section

Pre-image Transfer Roller Image Transfer Rear Guide

Figure 6-2. Cleaning the Electrode Comb Rev. B

6-1

Maintenance

EPL-5500 Service Manual

6.1.1.2 Replacement of Consumables This printer uses a consumable photoconductor unit and toner cartridge. The life of photoconductor unit is 20,000 pages and the toner cartridge life is 3,000 pages, when printing on A4- or letter-size pages with a 5% print ratio.

If printed images become faint, remove the toner cartridge and gently shake it. This will distribute the toner and may make the images darker. If the image is still too light, replace the toner cartridge cartridge.

If the printed image remains faint after you have replaced the toner cartridge, change the photoconductor unit.

6.1.2 Service Maintenance This section describes the periodic service maintenance and the cleaning required.

6.1.2.1 Periodic Service Maintenance The following units need service maintenance periodically, because they are subject to functional deterioration as the total number of printed pages increases, resulting in bad print quality.

Table 6-1. Periodic Service Maintenance Unit

Service Interval

Image transfer unit

Approx. 50,000 pages

Fusing unit

Approx. 50,000 pages

The service interval listed above is only a reference value. You do not need to perform service maintenance exactly at this time.

6.1.2.2 Cleaning Some parts of this printer require regular cleaning. Clean each part using the specified method and tools. (Refer to Chapter 3 for disassembly procedures.)

Table 6-2. Cleaning Parts and Procedures Parts Name

Cleaning Procedure

Paper take-up roller

Wipe the surface with a dry soft cloth.

Upper fusing roller (in fusing unit)

Dip a soft cloth in silicon oil and wipe the dust off.

Lower fusing roller (in fusing unit) Thermistor (in fusing unit) Paper separator and rollers (in fusing unit)

6-2

Dip a soft cloth in denatured alcohol and wipe the dust off.

Rev. B

EPL-5500 Service Manual

Rev. B

Maintenance

6-3

Appendix A

Reference Materials

Table of Contents A.1 CONNECTOR PIN ASSIGNMENTS A-1 A.1.1 Main Board (C169 MAIN-B Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4 A.2 CIRCUIT DIAGRAM

A-11

A.3 CIRCUIT BOARD COMPONENT LAYOUT

A-16

List of Figures Figure A-1. Cable Connections for the Video Controller . . . . . . . . . . . . . . . . . . A-1 Figure A-2. Cable Connections for the Engine Controller . . . . . . . . . . . . . . . . . A-2 Figure A-3. C169 MAIN-B Circuit Diagram (1/2) . . . . . . . . . . . . . . . . . . . . . . . A-11 Figure A-4. C169 MAIN-B Circuit Diagram (2/2) . . . . . . . . . . . . . . . . . . . . . . . A-13 Figure A-5. PWB-E (120V) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14 Figure A-6. PWB-E (220/240V) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . A-15 Figure A-7. C169 MAIN-B Component Layout (Front) . . . . . . . . . . . . . . . . . . . A-16 Figure A-8. C169 MAIN-B Component Layout (Rear) . . . . . . . . . . . . . . . . . . . A-17

List of Tables Table A-1. Board Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 Table A-2. CN2 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4 Table A-3. CN4 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5 Table A-4. CN5 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7 Table A-5. CN202 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8 Table A-6. CN203 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8 Table A-7. CN204 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9 Table A-8. CN205 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9 Table A-9. CN206 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9 Table A-10. CN207 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9 Table A-11. CN208 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9 Table A-12. CN209 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10 Table A-13. CN210 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10 Table A-14. CN211 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10

EPL-5500 Service Manual

Appendix

A.1 CONNECTOR PIN ASSIGNMENTS Figures A-1 and A-2 illustrate the interconnection of the primary components. Table A-1 gives the size and a description of each connector.

C169 MAIN-B Boad Video Controller Section CN1 Parallel I/F

CN2 RAM SIMM

CN4 LocalTalk/Serial I/F module or Type-B EX

ROM SIMM

CN5

Figure A-1. Connections for the Video Controller

Rev. A

A-1

Appendix

EPL-5500 Service Manual Main motor

CN206 1 2 3 4

M1 Po lyg on mot or C N 1 M 1 2

M2

ϕA ϕA ϕB ϕB

C169 MAIN-B Board

CN2 10 5 4 3 2 1

3 4

Fan mot or

POLYGON CTL DC 5V GND D C2 4V N . C.

CN211 1 FA N 2 D C2 4V

M3 Paper Exit sen sor C N3 S 3

CN2 08 1 A N OD E (PC 1 )

2 1

2 GND 3 PC3

PC3 Paper Take-up sensor C N1 S 3 2 1

CN2 03 1 ANODE (PC1)

2 GND 3 PC1

PC1

4 N . C.

5 D C24V 6 F EE D 1

Paper Take-up solenoid

CN205 CN2 S 1 2 2 1

SL 1

Fusing roller Thermistor

P WB -F Image transfer housing

Image transfer charger

High voltage unit

7 6 5 4 3 2 S SCAN 1

CN204

8 7 6 5 4 3 2 1

CN 1 D 1 P WB -D 2 3 Laser diode drive board 4 5 6 7

CN202 1 T HER MOST OR 2 DC5 V

TH1 CN1F 8 7 6 5 4 3 2 1

D C 5V L DATA GND L D APC 1 (L DV R1 ) LD APC1 (LDVR2) CO

1 2 3 4 5 6 7 8

P WB -S

1 2 3 4 5 6 7 8

HV C HV T HV SEL1 HV SEL2 HV B BIAS MON GN D D C2 4V

C N1 A CN2 09

Paper Take-up solenoid P WB -A

SL2 1 D C24V 2 FE ED 2

12 11 10 9 8 7 6 5 4 3 2 1

1 D C2 4V 2 F EE D 2 3 N.C. 4 DC5 V 5 GND 6 P E MP 2 7 PSIZE0 8 2 N D BI N 9 mm/inc h 1 0 UNIVERSAL 1 1 C H EC K1 8 CH ECK 2

CN2 07

D C2 4V 1 GN D 2 GN D 3 D C5 V 4 FUSE R LA MP 5

C N 1E 1 2 3 4 5

Fusing roller heater lamp

C N3 E

H EAT N 1 N.C. 2 HEA T L 3

H1

TF 1 P W B -E

Pow er unit

Fusing roller thermal fuse

Inter lock switc h

Inlet board

Power S W Inlet

2nd paper feeding unit (option)

Figure A-2. Cable Connections for the Engine Controller

A-2

Rev. A

EPL-5500 Service Manual

Appendix

Table A-1. Board Connector Summary Connector

Description

Pins

Reference

Main Board (C169 MAIN-B Board) CN1

Centronics parallel interface

36 pins

Table 1-8

CN2

Connector for RAM SIMM

72 pins

Table A-2

CN3

(Not used)

20 pins

—

CN4

Connector for LocalTalk/Serial I/F Module or Type-B EX

60 pins

Table A-3

CN5

Connector for ROM SIMM

72 pins

Table A-4

CN6

(Not used)

80 pins

—

CN7

(Not used)

40 pins

—

CN202

Connector for thermistor

2 pins

Table A-5

CN203

Connector for paper take-up solenoid and paper take-up sensor 6 pins

Table A-6

CN204

Connector for high-voltage supply board (PWB-S and PWB-F 8 pins board)

Table A-7

CN205

Connector for optical unit

7 pins

Table A-8

CN206

Connector for motor

4 pins

Table A-9

CN207

Connector for power supply board (PWB-E board)

5 pins

Table A-10

CN208

Connector for paper exit sensor

3 pins

Table A-11

CN209

Connector for lower paper cassette

12 pins

Table A-12

CN210

Connector for optical unit

5 pins

Table A-13

CN211

Connector for fan

2 pins

Table A-14

Power Supply Board (PWB-E Board) CN1

Connector for AC power inlet

4 pins

—

CN2

Connector for main board

5 pin

Table A-11

CN3

Connector for heater lamp

3 pins

—

High-Voltage Supply Board (PWB-F Board) CN1

Connector for main board

8 pins

Table A-7

CN2

Connector for paper take-up sensor

3 pins

—

Rev. A

A-3

Appendix

EPL-5500 Service Manual

A.1.1 Main Board (C169 MAIN-B Board) Table A-2. CN2 Pin Assignments Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

A-4

Signal Name Vss DQ0 DQ16 DQ1 DQ17 DQ2 DQ18 DQ3 DQ19 Vcc NC MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA10 DQ4 DQ20 DQ5 DQ21 DQ6 DQ22 DQ7 DQ23 MA7 NC Vcc MA8 MA9 RAS3 RAS2 MP2 MP0 MP1 MP3 Vss CAS0 CAS2 CAS3 CAS1 RAS0 RAS1 NC WE NC DQ8

I/O — I/O I/O I/O I/O I/O I/O I/O I/O — — O O O O O O O O I/O I/O I/O I/O I/O I/O I/O I/O O — — O O O O — — — — — O O O O O O — O — I/O

Description Ground Data bus bit 0 Data bus bit 16 Data bus bit 1 Data bus bit 17 Data bus bit 2 Data bus bit 18 Data bus bit 3 Data bus bit 19 +5 VDC Not connected Memory address bit 0 Memory address bit 1 Memory address bit 2 Memory address bit 3 Memory address bit 4 Memory address bit 5 Memory address bit 6 Memory address bit 10 Data bus bit 4 Data bus bit 20 Data bus bit 5 Data bus bit 21 Data bus bit 6 Data bus bit 22 Data bus bit 7 Data bus bit 23 Memory address bit 7 Not connected +5 VDC Memory address bit 8 Memory address bit 9 RAS 3 RAS 2 Not used Not used Not used Not used Ground CAS 0 CAS 2 CAS 3 CAS 1 RAS 0 RAS 1 Not connected Write enable Not connected Data bus bit 8

Rev. A

EPL-5500 Service Manual

Appendix

Table A-2. CN2 Pin Assignments (Continued) Pin No. 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Signal Name DQ24 DQ9 DQ25 DQ10 DQ26 DQ11 DQ27 DQ12 DQ28 Vcc DQ29 DQ13 DQ30 DQ14 DQ31 DQ14 NC PO1 PO2 PO3 PO4 NC Vss

I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O — I/O I/O I/O I/O I/O I/O — — — — — — —

Description Data bus bit 24 Data bus bit 9 Data bus bit 25 Data bus bit 10 Data bus bit 26 Data bus bit 11 Data bus bit 27 Data bus bit 12 Data bus bit 28 +5 VDC Data bus bit 29 Data bus bit 13 Data bus bit 30 Data bus bit 14 Data bus bit 31 Data bus bit 14 Not connected Not used Not used Not used Not used Not connected Ground

Table A-3. CN4 Pin Assignments Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Rev. A

Signal Name PCLK RST GND GND GND GND DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 AB0 AB1 AB2 AB3 AB4 CS

I/O O O — — — — I/O I/O I/O I/O I/O I/O I/O I/O O O O O O O

Description Clock Reset signal Ground Ground Ground Ground Data bus bit 0 Data bus bit 1 Data bus bit 2 Data bus bit 3 Data bus bit 4 Data bus bit 5 Data bus bit 6 Data bus bit 7 Address bus bit 0 Address bus bit 1 Address bus bit 2 Address bus bit 3 Address bus bit 4 Select signal

A-5

Appendix

EPL-5500 Service Manual

Table A-3. CN4 Pin Assignments (Continued) Pin No. 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

A-6

Signal Name RD WR IREQ NMI DREQ DTCT VCC VCC VCC VCC TXD+ TXDRXD+ RXDDTR CTS NC NC LCD SWRD GND GND GND GND RESET INH CMREQ WRRDY RDREQ WRT RDT TYPB TXD READY RXD NC VCC VCC VCC VCC

I/O O O O O O I — — — — — — — — — — — — — — — — — — O O I I I O O I — — — — — — — —

Description Read strobe signal Write strobe signal Interrupt to option Non-maskable interrupt Data request LT option used/unused +5 VDC +5 VDC +5 VDC +5 VDC Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Ground Ground Ground Ground Reset signal I/F disabled Request command I/F ready Data read request Write enable Read enable Type-B I/F used/unused Not used Not used Not used Not connected +5 VDC +5 VDC +5 VDC +5 VDC

Rev. A

EPL-5500 Service Manual

Appendix

Table A-4. CN5 Pin Assignments Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

Rev. A

Signal Name Vss D0 D16 D1 D17 D2 D18 D3 D19 Vcc RD A0 A1 A2 A3 A4 A5 A6 A10 D4 D20 D5 D21 D6 D22 D7 D23 A7 A19 Vcc A8 A9 A20 EEP RESET A21 A22 A23 Vss A11 A13 A14 A12 CS0 CS1 A18 WR A17 D8

I/O — I/O I/O I/O I/O I/O I/O I/O I/O — O O O O O O O O O I/O I/O I/O I/O I/O I/O I/O I/O O O — O O O O O O O O — O O O O O O O O O I/O

Description Ground Data bus bit 0 Data bus bit 16 Data bus bit 1 Data bus bit 17 Data bus bit 2 Data bus bit 18 Data bus bit 3 Data bus bit 19 +5 VDC Read strobe Address bit 0 Address bit 1 Address bit 2 Address bit 3 Address bit 4 Address bit 5 Address bit 6 Address bit 10 Data bus bit 4 Data bus bit 20 Data bus bit 5 Data bus bit 21 Data bus bit 6 Data bus bit 22 Data bus bit 7 Data bus bit 23 Address bit 7 Address bit 19 +5 VDC Address bit 8 Address bit 9 Address bit 20 Chip select Reset signal Address bit 21 Address bit 22 Address bit 23 Ground Address bit 11 Address bit 13 Address bit 14 Address bit 12 Chip select Chip select Address bit 18 Write enable Address bit 17 Data bus bit 8

A-7

Appendix

EPL-5500 Service Manual

Table A-4. CN5 Pin Assignments (Continued) Pin No. 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Signal Name D24 D9 D25 D10 D26 D11 D27 D12 D28 Vcc D29 D13 D30 D14 D31 D14 A16 R/B NC NC NC A15 Vss

I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O — I/O I/O I/O I/O I/O I/O O — — — — O —

Description Data bus bit 24 Data bus bit 9 Data bus bit 25 Data bus bit 10 Data bus bit 26 Data bus bit 11 Data bus bit 27 Data bus bit 12 Data bus bit 28 +5 VDC Data bus bit 29 Data bus bit 13 Data bus bit 30 Data bus bit 14 Data bus bit 31 Data bus bit 14 Address bit 7 Not used Not connected Not connected Not connected Address bit 15 Ground

Table A-5. CN202 Pin Assignments Pin No. Signal Name +5 1 TH 2

I/O — I

Description +5 VDC Fuser temperature

Table A-6. CN203 Pin Assignments Pin No. 1 2 3 4 5 6

A-8

Signal Name PS1 GND1 PS1 NC +24V FEED1

I/O I — I — — O

Description Paper take-up sensor Ground Paper take-up sensor No connected +24 VDC Paper take-up solenoid drive

Rev. A

EPL-5500 Service Manual

Appendix

Table A-7. CN204 Pin Assignments Pin No. 1 2 3 4 5 6 7 8

Signal Name HV-C HV-T HV-S HV-S2 HV-B BIAS-M GND2 +24

I/O — I — — O — —

Description

Ground +24 VDC

Table A-8. CN205 Pin Assignments Pin No. 1 2 3 4 5 6 7

Signal Name SSCAN LD-CTL LDAPC2 LDAPC1 GND1 LDATA +5V

I/O I I O O — O —

Description Horizontal synchronous signal Laser power signal Laser power adjust 2 Laser power adjust 1 Ground Laser data +5 VDC

Table A-9. CN206 Pin Assignments Pin No. 1 2 3 4

Signal Name A A B B

I/O O O O O

Description Motor phase A Motor phase A Motor phase B Motor phase B

Table A-10. CN207 Pin Assignments Pin No. 1 2 3 4 5

Signal Name +24V GND2 GND1 +5V FUSER

I/O — — — — O

Description +24 VDC Ground Ground +5 VDC Heater lamp on

Table A-11. CN208 Pin Assignments Pin No. Signal Name PS3 1 GND 2 PS3 3

Rev. A

I/O I — I

Description Paper exit sensor (+5V) Ground Paper exit sensor (SGL)

A-9

Appendix

EPL-5500 Service Manual

Table A-12. CN209 Pin Assignments Pin No. 1 2 3 4 5 6 7 8 9 10 11 12

Signal Name +24 V FEED2 NC +5V GND1 PE2 PSIZ0 PSIZ1 PSIZE2 CHECK1 CHECK2 CHECK3

I/O — O — — — I

Description +24 VDC Lower cassette solenoid on No connected +5 VDC Ground Lower cassette paper empty

Table A-13. CN210 Pin Assignments Pin No. 1 2 3 4 5

Signal Name NC +24V GND2 +5V P-CTL

I/O — — — — O

Description Not connected +24 VDC Ground +5 VDC Polygon motor control

Table A-14. CN211 Pin Assignments Pin No. Signal Name +24V 1 FAN 2

A-10

I/O — O

Description +24 VDC Fan control

Rev. A

EPL-5500 Service Manual

Appendix

A.2 CIRCUIT DIAGRAMS A24 R30 A25 R69 A26 R70 A21 R108

10K 10K 10K 10K

IRL[0..3]

AD[0..7] IC1 VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31

C2 0.1U C3 0.1U C4 0.1U

C48 0.1U VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS

R111 R112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 R130 R131 R132 R133 R134 R135 R136

R31

N.C. N.C. N.C. N.C. N.C.

137 140

BMODE8 BMODE16 TMS TRST TCK TDI TDO CLK_ECB

BE0 BE1 BE2 BE3

121 123 124 125

ASI0 ASI1 ASI2 ASI3

126 127 128 129

PJ PJ

J30

PJ

R28 68

74F74

R71 10K 8 7 6 5

RM12 1 2 3 4

8 7 6 5

10K RM11 1 2 3 4 68

DR0 2 DR1 3 DR2 4 DR3 5 DR4 6 DR5 7 DR6 8 DR7 9 DR8 12 DR9 13 DR10 14 DR11 15 DR12 16 DR13 17 DR14 18 DR15 19 DR16 22 DR17 23 DR18 24 DR19 25 DR20 26 DR21 27 DR22 28 DR23 29 DR24 32 DR25 33 DR26 34 DR27 35 DR28 36 DR29 37 DR30 38 DR31 39

IC2 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31

A2 48 A3 49 A4 50 A5 51 A6 52 A7 53 A8 54 A9 55 A10 56 A11 57 A12 58 A13 59 A14 60 A15 61 A16 62 A17 63 A18 64 A19 65 A20 66 A21 67 A22 68 A23 69 A24 70 A25 88

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25

89 A26 90 91 92

A28 A29 A30 A31

R110 68

CS0 CS1 CS2 CS3 CS4 CS5

100 102 103 104 106 107

R137 68 CSX0 R138 68 CSX1 R139 68 CSX2 R140 68 CSX3 CSX4 CSX5

R35

IRL0 IRL1 IRL2 IRL3

146 147 148 149

IRL0 IRL1 IRL2 IRL3

10K

AS 91 RD/WR 92 READY 89 SAMEPG 99 TMR_OV 120 93 LOCK 96 ERROR 88 MEXC 90 BREQ BGRNT 94 XTAL1 115 XTAL2 112 CLKOUT1 116 CLKOUT2 117 RESET 134

CP

1

68

J28 J29

4 D S Q5

IC8A

6 RQ

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27

68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68

2 3

10K

R109

42 57 60 122 141

143 133 108 142 152 113

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31

A2 155 A3 156 157 A4 158 A5 159 A6 160 A7 1 A8 2 A9 3 A10 4 A11 5 A12 8 A13 9 A14 A15 10 11 A16 13 A17 14 A18 16 A19 17 A20 19 A21 A22 22 A23 24 A24 25 26 A25 29 A26 30 A27

C47 0.1U

153 150 145 138 136 131 119 114 110 105 97 86 79 77 75 67 56 51 48 39 36 33 27 21 7

85 84 83 82 81 80 78 73 72 71 70 69 65 64 62 61 59 58 55 54 53 50 47 46 45 44 43 41 40 35 34 31

10K R34

R143 68 R144 68

R38 J32

68 68

AD0 AD0 97 98 AD1 AD1 99 AD2 AD2 AD3 AD3 102 103 AD4 AD4 104 AD5 105 AD5 AD6 106 AD6 AD7 AD7 126 IOALE 125 IOR/W 86 IORDY 82 IOREQA 83 IOREQB 84 IOREQC 85 IOREQD 96 EOP DMAIREQ 119 VDCSA VDREQA VDREQB VDDMA VDDMB VDNULL VDEOL

140 43 44 141 142 143 144

CAS0 CAS1 CAS2 CAS3

110 111 112 113

RAS0 RAS1 RAS2 RAS3 RAS4

154 155 156 157 158

R26

10K

BE0 BE1 BE2 BE3

93 94 116 75 95

AS RD/WR READY TMR_OV LOCK

118 45

BREQ BGRNT

46 47

MCLK RESET

87 117 78

EXBREQ EXBGRNT RDYIN

123 124 115

RD WR EEP

76 77

TEST0 TEST1

C5 0.1U VSS 160 VSS 159 VSS 146 VSS 133 122 VSS 121 VSS 109 VSS 107 VSS 101 VSS 80 VSS 79 VSS 42 VSS VSS 41 VSS 31 VSS 21 VSS 11

IRL0 IRL1 IRL2 IRL3

1 2 3 4

RM13 8 7 6 5

IC23A 74AS08

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20

C17 0.1U

C S X [ 0 . .

5 ]

ASI0 910 ASI1 ASI2 11 ASI3 12 CSX0 CSX1 CSX2 CSX3 CSX4 CSX5

29 30 31 32

IRL0 IRL1 IRL2 IRL3

IRL0 IRL1 IRL2 IRL3

AS 19 RD/WR 20 READY 27 SAMEPG 21 TMR_OV 22 LOCK 23 ERROR 24 28 MEXC 25 BREQ BGRNT 26 XTAL1 34 CLKOUT1 35 CLKOUT2 36 RESET 33 +5V 1 +5V 237 GND GND 38 GND 39 GND 40 CPU_BUS KX15-40K2D DR0

R75

68

D0

DR1

R76

68

D1

DR2

R77

68

D2

DR3

R78

68

D3

DR4

R79

68

D4

DR5

R80

68

D5

DR6

R81

68

D6

DR7

R82

68

D7

DR8

R83

DR9

1 3

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7 DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17 DR18 DR19 DR20 DR21 DR22 DR23 DR24 DR25 DR26 DR27 DR28 DR29 DR30 DR31

5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36

CN6 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23

CSX0 CSX1

39 40

CSI0 CSI1

41 42

CSO0 CSO1

43 44

RD WR

68

D8

R84

68

D9

68

D10

45 47 46 48

BWE0 BWE1 BWE2 BWE3

DR11 R86

68

D11

73 74

RD/BY RESET

DR12 R87

68

D12

DR13 R88

68

D13

75 76

VPP VPP

1 2 3 4

VCC VCC VCC VCC

37 38 77 78 79 80

VSS VSS VSS VSS VSS VSS ROM_BUS 52819-0801

68

D14

DR15 R90

68

D15

DR16 R91

68

D16

DR17 R92

68

D17

DR18 R93

68

D18

DR19 R94

68

D19

DR20 R95

68

D20

DR21 R96

68

D21

DR22 R97

68

D22

DR23 R98

68

D23

DR24 R99

68

D24

DR25 R100 68

D25

DR26 R101 68

D26

DR27 R102 68

D27

DR28 R103 68

D28

DR29 R104 68

D29

DR30 R105 68

D30

DR31 R106 68

D31

MA0 MA1 MA2 MA3

8 7 6 5

27 RM4 1 2 3 4

MA4 MA5 MA6 MA7

CE GND 12 OE W/B/V GND 31 EPROM8M*16

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7 DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15

3

74AS08 IC23C

9

2

DR0 2 DR1 4 DR2 6 DR3 8 DR4 20 DR5 22 DR6 24 DR7 26 DR8 49 DR9 51 DR10 53 DR11 55 DR12 57 DR13 61 DR14 63 DR15 65 DR16 3 DR17 5 DR18 7 DR19 9 DR20 21 DR21 23 DR22 25 DR23 27 DR24 50 DR25 52 DR26 54 DR27 56 DR28 58 DR29 60 DR30 62 DR31 64

CN2 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 DQ16 DQ17 DQ18 DQ19 DQ20 DQ21 DQ22 DQ23 DQ24 DQ25 DQ26 DQ27 DQ28 DQ29 DQ30 DQ31

36 37 35 38

MP0 MP1 MP2 MP3

MA0 12 MA1 13 MA2 14 MA3 15 MA4 16 MA5 17 MA6 18 MA7 28 MA8 31 MA9 32 MA10 19

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10

11 29 46 48 66 71

N.C. N.C. N.C. N.C. N.C. N.C.

40 43 41 42

CAS0 CAS1 CAS2 CAS3

44 45 34 33

RAS0 RAS1 RAS2 RAS3

47

WE

10 30 59

VCC VCC VCC

8

10 31

MA8 MA9 MA10

6

5

R145 68

27 27 27 22

IC23B

4

74AS08

J25 J/3

IC23D

12

11

13

74AS08

C43 0.1U

IC23 +5 14 GND7 VCC_GND

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20

12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30 31 22 24

DR10 R85

DR14 R89

Local Language IC12 A0 O0 14 A1 O1 16 A2 O2 18 A3 O3 20 A4 O4 23 25 A5 O5 27 A6 O6 A7 O7 29 A8 O8 15 A9 O9 17 19 A10 O10 21 A11 O11 A12 O12 24 A13 O13 26 A14 O14 28 A15 O15 30 A16 A17 VDD 22 A18 N.C.

10 9 8 7 6 5 4 3 41 40 39 38 37 36 35 34 33 2 1 42 11 13 32

R73 10K

J2 2 J/3

13 CS0 14 CS1 15 CS2 16 CS3 17 CS4 18 CS5

RM3 1 2 3 4

27

PJ

CSX0

A26 A27

8 7 6 5

R18 R20 R21 R19

1

2

C6 0.1U

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20

12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30 31 22 24

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20

12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30 31 22 24

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20

12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30 31 22 24

IC13 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18

D0 13 D1 14 D2 15 D3 17 18 D4 19 D5 D6 20 D7 21

C51 0.1U

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7

VPP 1 VDD 32

C9 0.1U

C7

0.1U CE OE GND 16 EPROM 4M*8/DIP IC14 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18

13 D0 14 D1 D2 15 17 D3 18 D4 19 D5 20 D6 D7 21

DR0 2 DR1 3 DR2 4 DR3 5 DR4 7 DR5 8 DR6 9 DR7 10 DR8 31 DR9 32 DR10 33 DR11 34 DR12 36 DR13 37 DR14 38 DR15 39

DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15

11 12 15 30

VPP 1 VDD 32 C8

0.1U CE GND 16 OE EPROM 4M*8/DIP

IC15 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18

13 D0 14 D1 15 D2 17 D3 18 D4 19 D5 D6 20 D7 21

DR16 2 DR17 3 DR18 4 DR19 5 DR20 7 DR21 8 DR22 9 DR23 10 DR24 31 DR25 32 DR26 33 DR27 34 DR28 36 DR29 37 DR30 38 DR31 39

DR16 DR17 DR18 DR19 DR20 DR21 DR22 DR23

11 12 15 30

VPP 1 VDD 32 C30

0.1U CE GND 16 OE EPROM 4M*8/DIP IC16 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18

D0 13 D1 14 D2 15 17 D3 18 D4 D5 19 20 D6 21 D7

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21

DR24 DR25 DR26 DR27 DR28 DR29 DR30 DR31

VPP 1 VDD 32

10 9 8 7 6 5 4 3 41 40 39 38 37 36 35 34 33 2 1 42 11 13 32

C31

0.1U CE OE GND 16 EPROM 4M*8/DIP

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21

10 9 8 7 6 5 4 3 41 40 39 38 37 36 35 34 33 2 1 42 11 13 32

IC17 IO1 A0 16 17 IO2 A1 18 IO3 A2 IO4 A3 19 IO5 A4 22 IO6 A5 23 24 IO7 A6 25 IO8 A7 IO9 A8 26 IO10 IO11 RAS 14 29 IO12 LCAS 28 IO13 UCAS 13 IO14 WE 27 IO15 OE IO16 VCC1 NC VCC620 NC VCC NC NC VSS 21 VSS 35 VSS 40 DRAM4M*16/SOJ IC18 IO1 A0 16 IO2 A1 17 IO3 A2 18 IO4 A3 19 IO5 A4 22 IO6 A5 23 IO7 A6 24 IO8 A7 25 IO9 A8 26 IO10 IO11 RAS 14 IO12 LCAS 29 IO13 UCAS 28 IO14 WE 13 IO15 OE 27 IO16 VCC1 NC VCC620 NC VCC NC NC VSS 21 VSS 35 VSS 40 DRAM4M*16/SOJ IC21 A0 O0 14 A1 O1 16 A2 O2 18 20 A3 O3 23 A4 O4 A5 O5 25 A6 O6 27 A7 O7 29 A8 O8 15 A9 O9 17 A10 O10 19 A11 O11 21 A12 O12 24 A13 O13 26 A14 O14 28 A15 O15 30 A16 A17 VDD 22 A18 NC CE GND 31 OE BYTE GND 12 MROM8M*16 IC22 A0 O0 14 A1 O1 16 A2 O2 18 20 A3 O3 23 A4 O4 25 A5 O5 27 A6 O6 A7 O7 29 A8 O8 15 A9 O9 17 A10 O10 19 A11 O11 21 24 A12 O12 26 A13 O13 A14 O14 28 A15 O15 30 A16 A17 VDD 22 A18 NC

MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8

55 56 57

CE RW READY

40 39 38 37

IRL0 IRL1 IRL2 IRL3

53 54

MCLK RESET

41 42 43 44

PIRDY SIRDY TBRDY SCRDY

49 48 47 46 45 50

OPTI0 OPTI1 OPTI2 OPTI3 OPTI4 NMI

DATA1 98 97 DATA2 96 DATA3 DATA4 95 94 DATA5 93 DATA6 92 DATA7 91 DATA8 DIR 88 STRB 80 SELIN 81 AUTO 82 79 INIT ACK 87 BUSY 86 PE 85 SELOT 83 ERR 84

C26

4321

43 21

C27

5678

56 78

RM8 1K

MA1 MA2 MA3 C21 0.1U

MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8

PD1 PD2 PD3 PD4 SIMM/72PIN

1 3

MA4 MA5 MA6 MA7 MA8

17 18 19 20 23 24 25 26 27 28 14 31 30 13 29 1 6 21

C23 0.1U

22 37 42

MA0

C20 0.1U

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7 DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15

MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8

17 18 19 20 23 24 25 26 27 28

0.1U

J26 J/3 2 J27 J/3 2

C52 0.1U

IC19 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9

IO1 2 IO2 3 4 IO3 5 IO4 7 IO5 8 IO6 9 IO7 10 IO8 33 IO9 34 IO10 35 IO11 RAS IO12 36 38 LCAS IO13 39 UCAS IO14 40 IO15 41 WE IO16 OE VCC N.C. 11 VCC N.C. 12 VCC N.C. 15 N.C. 16 N.C. 32

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7 DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15

R7

68

R9

68

J31

IC20 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9

1 6 21

VCC VCC VCC

N.C. N.C. N.C. N.C. N.C.

DR16 DR17 DR18 DR19 DR20 DR21 DR22 DR23 DR24 DR25 DR26 DR27 DR28 DR29 DR30 DR31

NFA41R00C470 R6 68

31

C18

62 61

TEST0 TEST1

76 73 75 72 74 71

EPRDY CPRDY PRRDY PRINT PRFD ETBSY CTBSY SRCLK STS CMD VSREQ

121 112 120 111 110 119 113 114 118 117 122

2 3 4 5 6 7 8 9 12 13 14 15 16 17 18 19 22 23 24 25 26 27 28 29 32 33 34 35 36 37 38 39

IC3 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31

53 54 55 56 57 58 59 60

A0 A1 A2 A3 A4 A5 A6 A7

62 70

R/W READY

2

AB0 19 18 AB1 17 AB2 AB3 16 AB4 15

52 79 66 47 48 88

MCLK VCLKIN CLK12 CLK14 CLK18 CLK16

86 87 42 49

HSOUT VSYNC SDIN CLKOUT

1 0

R146 R147 R148 R149 R150

68 68 68 68 68

AB0 AB1 AB2 AB3 AB4

R14 100 5

IC7C 74LS07 6

R15

100 3

IC7B 74LS07 4

100 1

IC7A 74LS07 2

C14 0.1U

STRBX SELINX AUTOX INITX

10 11 12 13 32

ACKX BUSY PE SELOT ERRX

35 17 15 18 34

+5V CG N.C. N.C. N.C. PIF

IC7F 13

12 74LS07 C10

IC7-7

0.1U IC7-14

DB0 2 3

PJ

J13 J14

PJ PJ

J15

PJ

J16

PJ

CP

3.3K

R61

3.3K

100P

R62

3.3K

C34

100P

R63

3.3K

C33

100P

R64

C32

100P

R65

R40

68

R41

68

R42

68

R43

68

R44 R45

68 68

3.3K 3.3K 5 13 4 11 7 10 12 8 9 6 3 14

CN3 EPRDY CPRDY PRRDY PRINT ETBSY CTBSY SRCLK STS CMD TOD HSYNC VIDEO

2 1

RESET DOTCLK

16 18 20

+5 +5 +5

15 17 19

DT1 FB1L3N R67

LED1

330

LED Yellow

GND GND GND EIF DF11-20DP-2DSA

IC10B

D S Q9 CP

DT2 FB1L3N

R Q8 174F74 3 C41 IC10-7

R39

100P

C35

D S Q5

1 0 11

PJ

100P

C36

IC10A

6 RQ 74F74 1

DB1 12

J11 J12

C37

0.1U IC10-14

C24 1U/50V

1 2 3 4 6 7

R68

LED2

330

LED Red

R1

SW2

10K R66 47K

PB

IC11 CS VCC 8 SK DI DO ORG NC GND5

J5

PJ

J6

PJ

J7

PJ

J8

PJ

J9 J10

PJ PJ

EPRDYX CPRDYX PRRDYX PRINTX ETBSYX CTBSYX SRCLKX STSX CMDX TODX HSYNCX VIDEOX RESETX

Engin Controller

C42 0.1U

AT93C46 E05A92KA

CR1 VCC 4 3 1

QR

OUT N.C.

TH09502NA 1 3 FL1 C38 2 0.1U

OUT

J24 J

GND2 67.15472MHz

IC8B R33 68

CR2 VCC 4 3 1

TH09502NA 1 3 FL2 2

C39 0.1U GND2 45.0000MHz OUT N.C.

C46 0.1U

14 7

VCC7

NC NC NC C5 NC GND4 M51953BFP

R2 C1

10

1U/50V Patern Only

CUT THE FOLLOWS LINES IN MP BOARD. 1. IC1---126,127,129,116 PIN 2. IC3---49 PIN

D B [ 0 . .

7 A ] B [ 0 . .

4 ]

4

C12 C49 0.1U 0.1U C16 C50 0.1U 0.1U C13 0.1U

68

8

R17 1K IC6

CE GND 31 OE BYTE GND 12 MROM8M*16

IC7D 74LS07 8

1 36 14 31

TP

BL1 2012Z601

NOT USE 21,22 PIN IN 4M*16.

10

R13 100 9

74LS07

VSS 90 VSS 80 VSS 78 VSS 65 VSS 51 VSS 40 30 VSS 21 VSS 11 VSS 1 VSS

R46

QS D 12 CP 11

1 2 3 8

IC7E

PJ

9

6

RM7 8 7 6 5

TP2

C25 0.1U

NOT USE C52 IN 16M*16.

DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8

91

10 VDD 20 VDD 31 VDD 41 VDD 50 VDD 64 VDD VDD 81 VDD 91 VDD 100

RSTOUT RSTIN

1K

RM5 1K 1 8 2 7 3 6 4 5 R8 1K

CN1

2 3 4 5 6 7 8 9

R12 100 11

R16

TEST1 71 72 TEST2 73 TEST3 74 TEST4

43 46

5 678

16 19 20 21 22 23 24 25 26 27 28 29 30 33

R5 91

RCHK0 82 83 RCHK1 84 RCHK2 RCHK3 85

CS DMAREQ0 DMAREQ1 DMAMOD0 DMAMOD1 DNULL EOL

4 321

470P 470P

R4

PRINT 75 77 VSREQ 76 HSYNC VDOOUT 89 RTST0 92 RTST1 93 RTST2 94 RTST3 95 RTST4 96 97 RTST5 98 RTST6 99 RTST7

61 44 45 67 68 69 63

470P

1 2 3 4

EXTOUT0 60 59 EXTOUT1 58 EXTOUT2 105 EXT 104 RDE WRE 103 DB0 DB0 12 DB1 11 DB1 DB2 910 DB2 DB3 DB3 8 DB4 DB4 7 DB5 DB5 6 DB6 DB6 5 DB7 DB7

11 12 15 16 32

VSS VSS VSS DRAM16M*16/SOJ

1 2 3 4

68 RM2 8 7 6 5

R29

470P

C29

100

LCD 20 LED 21 SWRD 22 LCLK 23 SWINT 126 BZ 24 TYPB 108 RDT 107 WRT 106 INH 109 RDREQ 123 WRRDY 124 CMREQ 125

1 74F74 3

J28,29,30,31,32 ARE "CUT LAND PATTERN".

A A A A A A A A A A A A A A A A A A A A A A A A D DD D D D D DD DDD DDD DD DDD DD DD D D DD DD DD 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 R RR R R R R RR RRR RRR RR RRR RR RR R R RR RR RR 3 32222222 222 111 11 111 11 987654 32 10 54 321 09 876543 210 1 09876543 210 987 65 432 10

GND GND GND GND GND GND GND GND GND GND

N2012Z121

J25,J26,J27 1-2 4M*16 / 2-3 16M*16

DR16 DR17 DR18 DR19 DR20 DR21 DR22 DR23 DR24 DR25 DR26 DR27 DR28 DR29 DR30 DR31

0.1U 3 14 25 36 51 67 78 89 100 116

BL2

VSS VSS VSS DRAM16M*16/SOJ

14 31 30 13 29

22 37 42

J

A2 A3 A4 A5 A6 A7 A8 A9

2 IO1 3 IO2 4 IO3 5 IO4 7 IO5 8 IO6 9 IO7 10 IO8 33 IO9 IO10 34 IO11 35 RAS IO12 36 38 LCAS IO13 39 UCAS IO14 40 IO15 41 WE IO16 OE

C22

J

J21

DR0 DR1 DR2 DR3 DR4 DR5 DR6 DR7 DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17 DR18 DR19 DR20 DR21 DR22 DR23 DR24 DR25 DR26 DR27 DR28 DR29 DR30 DR31

VSS VSS VSS

1 3

J20

EXRD EXWR 2 EXIN0 1 128 EXIN1 127 EXIN2 EXIN3 69 63 CTSL 64 N.C. 65 N.C. 66 N.C. 70 N.C. N.C. 4 13 VCC 26 VCC 35 VCC 52 VCC VCC 68 VCC 77 VCC 90 VCC 99 115 VCC VCC C15

TXD RXD RTS CTS SRXD BCLK

1 2 3 4

RM1 8 7 6 5

68

E05A93AA

67 68 69 70

MA9

10K 10K

C11 0.1U

1 39 72

MA0

R59 R60

*

DR[0..31]

CSX2 CSX3

IC4 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7

102 101

MB86933H

CN7 3 A26 4 A27 5 A28 6 A29 A30 7 A31 8

33 33 33 33

68

68

68 RAS0 130 RAS1 CAS0 12 CAS1 15 CAS2 18 CAS3 23 DWE 95

R22 R23 R24 R25

E05A91KA

68

12 34

10K

149 147 152 153 151 148

VDD110 VDD VDD 20 VDD 30 VDD 40 VDD 81 VDD 100 108 VDD 114 VDD 120 VDD 132 VDD 145 VDD

87 65

R3

127 MA0 128 MA1 129 MA2 130 MA3 131 MA4 134 MA5 135 MA6 136 MA7 137 MA8 138 MA9 MA10 150 ICG ICDS ICRW ICM1 ICM0 ICA1

AD0 34 AD1 33 AD2 32 AD3 31 AD4 30 AD5 29 AD6 28 AD7 27

R11 RM6 10K 10K

10K R27

TP1 TP

DWE 139

71 72 73 74

R36 R37 R107

RM10 1K

C28

A[2..27]

6 20 28 32 37 38 49 52 63 66 74 76 87 98 101 109 111 118 132 135 139 144 151 154

RM9 1K

SW1 PB

IC8 +5 GND VCC_GND

R10 R32 R72 10K 10K 10K

R50 R51 R52

3.3K 3.3K 3.3K

57 58 59 60

CN4 VCC VCC VCC VCC

41 42 43 44

GND GND GND GND

45 46 47 48 49 50 51 52

RESET INH CMREQ WRRDY RDREQ WRT RDT TYPB

53 54 55

TXD READY RXD

56

NC

DB0 7 DB1 8 DB2 9 DB3 10 DB4 11 DB5 12 DB6 13 DB7 14

DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7

AB0 15 AB1 16 AB2 17 AB3 18 AB4 19

AB0 AB1 AB2 AB3 AB4

20 21 22

CS RD WR

24 23 25 1 26 2

NMI IREQ DREQ PCLK DTCT RST

31 32 33 34 35 36

TXD+ TXDRXD+ RXDDTR CTS

37 38 39 40

NC NC LCD SWRD

27 28 29 30

VCC VCC VCC VCC

3 4 5 6

GND GND GND GND

IOBUS/OPTIF

76 66 73 09 87 29 1 N NNR V V V C CC/ S S S B SS S

41 3 44 531 3 6 665 55 542222 33 332 44 674444 133 21 111 11 1 6 66555552 222 900 571 4 54 87 639 68 612130 921 88 765 43 2 4 20864207 531 975 35 317 53 196420 86 42 V V V R WR E C C A A A A A A A A A A A A A A A A A A A A A A A A D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D CC C E R D E S S 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 9 8 7 6 5 4 3 2 1 0 P1 0 3 2 1 0 9 8 7 6 5 4 3 2 1 0 CC C S 109 87654321 098 76 543 21 0 E T

CN5 ROM_SIMM

Figure A-3. C169 MAIN-B Circuit Diagram (1/2)

Rev. A

A-11

Rev. A

7 1 6 4 3 2 5

CN206

GN D1

+ 5V

1 2

5

1 A 2 A 3 B 4 B

3

4

TP

+ 24V GND2

FUSER

CN207

TP 202

2 1

2 +5V 1 TH

+24V FA N

C N211

CN202

1 NC 2 + 24V 4 +5V 5 P_CTL 3 GND2

CN210

+5V SSCA N LDATA LDAP C1 LDAP C2 LD_C TL GN D1

CN205

1A

R 207

R203

TP

TP203

C201 220U /16V

TP

TP201

200m A

3.0K 1.0%

0.1U

C243

0.1U

C259

0.1U

C258

33

680 R206

R253

0.01U

C239

13

820P 56K 820P

C211 R 218 C209

2.7 1/4W

R225 R220 1K

1 1/ 2W

820P

C208

R222

820P 56K

R217

R219 1K

1 1/2W

2

10

15 1 1A 16

2

10

15 1 1A 16

0.1U

C203

ULN 2003A

4

74HC02

IC202D

IC 203D

6.8 1/ 4W

R227

C210

2.7 1/4W

R224

R221

IC202-7

13

1000P

C206

PLACE NEAR CN210

PLAC E NE AR C N205

1K

R254

4700P

C253

2. 2K

11

14

6 11

14

4 GND 5 GND 12 G ND 13 G ND

VCC VCC

3

8 PH 9 I0 7 I1 VM M VM M

TEA3718SDP

T

C

E

MA MB

6

3

1

4 GND 5 GND 12 GND 13 GND

VCC VCC

VM M VM M

8 PH 9 I0 7 I1

C214 1000P

TEA 3718SDP IC205

T

C

E

MA MB

IC204

IC202-14

47K

R226

1A

1A

74HC02

IC 202A

C 231 1000P

9

8

3

2

10K

10K R292

R293

C229 1000P

C212 47U 35V

C235 1000P

C230 1000P

C236 1000P

74HC 02

IC202C

C237 1000P

C232 1000P

C238 1000P

FB1L3N

DT201

12

11

10

4

1000P

C252

74HC02

IC202B

R 210 3.0K

R209 1.0K

R238 R237

22P

C204

22P

2 3

1

C205

6

5

10K

R296

10K

R 291

10K 10K

CR 201 8MH z

10K

R295

1000P

C251

VR 201 10K

55 53 49 38 36 58 29 28 24 20 19 18 17 1 65

70 69 68 67

31

30

54

79

4

57

77

78

6

5 52

13 12 3 71

66

56

10 11

16

15 9

M3807X

P01 P03 P07 P22 P24 P36 P40 P41 P43/IN T1 P47/SRD71 P50/ TOUT P51/INT2 P52/INT3 P62/AN7 P87/RTP5

P82/ RTP0 P83/ RTP1 P84/ RTP2 P85/ RTP3

XOUT

XIN

P02

AM POU T

P77/AN4

P37

P64/AN10/ AM P-

P63/ AN 9/AM P+

P75/AN2

P76/ AN3 P04

P56/DA1 P57/DA2 P60/ AN5 P81/ DA4

P86/RTP4

P00

P71/SO UT2 P70/SIN2

P53/IN T4

P54/CNTR0 P72/SCLK2

IC201

VSS AV SS CNAV SS

P65/ AN11/ DAVREF

VCC AM PVCC AD VREF

P17

P74

P73 P05 P06 P55/CNTR1 P61/AN6

P80/ DA 3

P 25 P 26 P 27

P35

P13 P10 P11 P12

P14

P16

P34

P15

RE SE T

P33 P30/RTP 6 P31/RTP 7 P32 P42/INT0 P20 P 21 P 23 P46/SCLK1 P45/TXD P44/RXD

8

7

2

32 75 26

73 80 74 76

41

51 50 14

72

35 34 33

59

45 48 47 46

44

42

60

43

27

61 64 63 62 25 40 39 37 21 22 23

1 2 3 8

R290

10K

TP205 TP

0.1U

C 215

1000P

C217

6

TP204 TP

1000P

C 202 0.1U

R205 6.8K

1

R204 39K

C218

C 216 0.01U

7

5 C 4 GN D

V CC

M 51953AFP

NC NC NC NC

O UT

IC 251

16

1000P

D 201 1SS 226

C219

U LN 2003A

IC203A

C254 0.01U

1000P

C220

R 236 47K

C255 0.01U

C213 0.022U

6

3

5

2

100K

R 223

IC203F

IC 203C

IC 203E

IC 203B

7

1 2 3 4

8 7 6 5

47K

R 216

400m A

47K

R215

10

R233

R234

8

9

C233

2003X

GND

NC

IC203

1000P

U LN 2003A

ULN2003A 11

ULN 2003A 14

ULN 2003A 12

15

ULN2003A

IC203G

R M202 4.7K

R 214

R213

0.01U

C256

400m A

4.7K

4.7K

220 1/4W

0.01U

C240

220 1/ 4W

R208 2.2K

R211 10K

C 228 1000P

0.1U C207

C241 0.01U

10P

C 224 1000P C223 1000P

0.1U

R M201 3.3K

C226 1000P

C222 1000P

C242

C227 1000P

1 2 3 4

8 7 6 5

C257

1000P

C 234

R212 2.2K

C221 1000P

4 8 1 3 2 5 6 7

C225 1000P

1 4 3 6 7 8 9 2 10 11 12 5

1 3 2

5 4 1 3 6 2

H V_S2 + 24V HV_C HV_S HV_T HV_B BIAS _M GND2

CN204

+ 24V + 5V NC PE 2 P SIZ0 PSIZ1 PSIZ2 FEED2 CHEC K1 CHEC K2 CHEC K3 GND 1

CN 209

PS 3 PS 3 G ND

CN208

+24V NC PS 1 PS 1 FEED 1 GND1

CN203

RESE TX

S RCLK X S TS X C MDX

TODX EPRDYX PRRDYX ETBSYX CTBSYX CPRDYX P RINTX

HSYN CX VIDEOX

EPL-5500 Service Manual Appendix

Figure A-4. C169 MAIN-B Circuit Diagram (2/2)

A-13

L

N

3

1

CN3 5 3 25 9 -0 32 0 N

L

F1 6.3 A , 12 5 V

R1 4 70 K

C1 0 .22 u F 1 25V

NR 1 ENC2 71D -1 0 Z7D2 71

L1 Z 0 408 , Z 04 6 2

C4

C3

C3 , C 4 220 0pF 125 V

C2 0.1u F 12 5V

C5 2 20 0 pF 1 25 V

BD 1 D 2 5 8A 50 D 2 S 86 0 T h1 10 0 -g, M 1 00 1 0C , M 1 00 0 7 C N T H9 D 1 0 0L A

C5 3 30u F 2 00V

+

C8 6 80p 1 kV 5 00V

R5 22 2W

C19 0.01 u 25 0V

L 10

R 24 1 0 0K 0 .5W D4 EU 2A, A GIC ER A22-06 Q1 2S K1 445 2S K1 446 R7 4.7

ZD2 H Z S15

R 11 68 K

R4 22 0K -18 0K 0.25 W R5 390 K 0.25W R8 680 0 .5 W

C 10 47 00p F 50 V

R9 10K

PC1 PC81 7

C9 0 .0 1uF 5 0V

Q2 D 1 20 7 C 1 21 3 C 1 81 5

C7 0.1uF 125 V

L 11 Z0 068

ZD 1 H ZS1 8 -20 R 10 22 K R 25 1 8K

R2 4 .7

TR C T M 8 41 5 S M 8G Z 4 7

R3 33

T1 Z04 96

PC 2 S2 1M D4 V S2 1M E4F

D2 Y G 90 1C 2 D 5LC 2 0U

D3 Y G 8 01 C 4 D 5S C 4M F M B -24 M

R 12 1K 0.25 W

R 21 0 .25 W

R 28 33

+

C 17 3 30 0u F 1 0V SC R 1 T F 32 15 2 P 4M

D1 ER AG1-2 1 1 SS8 1

R12 1.2K C 14 0 .0 47u F 5 0V

+

C1 6 100 0uF 35V

+

R1 5 47K

R 27 1 .2K 0 .5W

C1 3 0.1uF 50V

C 21 1 uF , 50V

R 30 33

ZD 3 H ZS6

C 15 10 00 uF 35 V

ZD 4 H ZS 27

R29 33

PC 1 PC 917

R1 4 33 0

IC1 L 54 31 T L 43 1 u P C 10 9 3 H A 1 74 3 1

R 19 1.2K 0.5W

R22 10 0 0.5W

R 20 1 .2 K 0 .5 W

VR1 1K

R 15 1 .8K

L9

R26 1 .2 K 0 .5 W

SW 2 A M 51 66 2A 53 1

L7 Z0 400

CN1

+2 4V GN D

+5 V G N D

+24 V

3

H.L

+5 .1 V

1

4

2

5

Rev. A

A-14

EPL-5500 Service Manual Appendix

Figure A-5. PWB-E (120 V) Circuit Diagram

Rev. A

3

2

HE A TE R 36 0W

L.

1

IN L1

3

N.

L.

HEA TE R 2 36 0W

1

C N2

SW1

W H2

W H1

C1 2 50 V 0 .3 3 u F

F1 2 50V 5A

VS1 4 70 V

L1 C M 1 02

R2 1 /4W 4 70K

R1 1 /4 W 4 70 K

C3 2 50 V 2 20 0 p F

C2 2 50 V L2 2 20 0p F C M 1 02

C4 250 V 0.1 u F

RC1 6 0 0V , 1 .5A

C7 4 0 0V 8 2 uF

RT1 10

VS2 47 0 V

R6 2W 10 0

+

C9 1KV 1 00 pF

C 21 2 50V 0 .1u F

R1 2 4.7 K 1/4 W

Q2 50 V 2A

Q1 80 0V 3A

C 22 0 .0 1u F

R22 1/2W 33

C 11 0.0 4 7u F

VR 1 200

R 10 39 0

R7 2W 16

D1 8 00 1A

R4 1 /2 W 4 70 K

C 10 0 .03 3 u F

R5 3W 1 00 K

R3 1/2 W 47 0 K

D2 7 0V 0 .1 5A

R21 1/2W 1K

TH 1 6 00 V 5A

R8 2W 16 D3 2 .0-2 .2V

R9 2W 16

C8 63 0 V 0.0 1uF

ZC

P I6 1

D4 7 0V 0 .15 A

4

6

R 51 10 0

T1 T M 19 9

2 4

M51

1 5

P I5 1

R 11 1 00

2

1

R52 1K

R C 51 2 00 V 1 0A

R C51 20 0 V 10 A

R 69 1W 1 .2 K

C 51 4 .7 u F

+

N.

R 54 1 .4 7 K 1%

R63 1.58 K 1%

C 62 3 5V 2 200 u F

+

R64 2W 1 .2K

T H61 400V 5A

+

L 62 C L 08 6

C 65 50 V 10 u F

C64 + 1 0V 2 20 0 u F

R 63 2W 1 .2 K

C 61 4 .7 u F

+

D 63 70V 0 .15 A

D 62 2 8.2 2 9.6 V

R61 1K

R62 47

D 61 4 .7 4 .9 V

D 65 1 9.5 -2 0.4 V

D 64 7 0V 0 .1 5A

R70 22 1 /4 W

R 73 W IR E , P E S

7

4

M61

+

-

8

5

6 C 66 0 .1 uF

R 66 3W 33

R 72 3 .9 K

R 71 1 00

S W 61

3

4

2

1

5

C N1

G N D(+ 5 .1V )

+ 5.1 V

G N D (+2 4V )

+ 24 V

FU S E R LA MP

EPL-5500 Service Manual Appendix

Figure A-6. PWB-E (220/240 V) Circuit Diagram

A-15

Appendix

EPL-5500 Service Manual

A.3 CIRCUIT BOARD COMPONENT LAYOUT

Figure A-7. C169 MAIN-B Component Layout (Front)

A-16

Rev. A

EPL-5500 Service Manual

Appendix

Figure A-8. C169 MAIN-B Component Layout (Rear)

Rev. A

A-17

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