Error Message

1. Display of Error Message [NOTICE]

The language (English or Japanese) of error message is selected at the [• Language] menu in the adjustment mode.

2. How to Read the Error Message

1. Error code in the error message is represented by four-digit codes.

Error code: E1 E2 E3 E4 lndividual code

Group code

0:Alarm

1:Abnormal communication

2:Abnormal detector

3:Abnormality inside AML

2. The highest rank (E1 in the above figure) indicates error groups. The each next three digit figure (E2 through E4 above) indicates individual error code under error groups.

1. If AML system detects the trouble in ordinary use (user mode), it makes beep sound as well as displays error message on the moment display. Display example: [Error:2001]

Shows that an error of error code 2001 has occurred.

2. This error message display continues till the cause is eliminated.

3. While the adjustment or maintenance mode is being used, only beep sound informs the operator of the occurrence of trouble. The display on the moment display, however, does not change to the error message display automatically. Current message keeps displayed.

4. To confirm the error message in the adjustment or maintenance mode, press the lift height limit key. While you are pressing the key, the error message is shown on the moment display. (It may take some seconds for the display to change.)

5. If trouble remains even when you return to the user mode after exiting adjustment or maintenance mode, corresponding error message appears on the moment display.

3. Since group code “0” indicates a warning condition, it does not always mean that there is a problem in the system when an error message is displayed.

4. For this reason, warning-related error messages are not registered in the system’s error history memory. Warning-related error messages are shown in the moment display in the same way as message for other group codes.

3. How to Read the Error History

1. Error history records 50 errors, maximum, of the group code, in order of occurrence. Those beyond 50 will be made to disappear in the order of occurrence.

2. See the “Error Data Display” in the “Functions of and How to Use Maintenance Mode” section for reading the error history.

4. Troubleshooting Table

4.1 Group Code 0

Message Description

Warning : 0001

Warning : 0002

Warning : 0003

Warning : 0004

Right front outrigger beam retraction

Right rear outrigger beam retraction

Left front outrigger beam retraction

Left rear outrigger beam retraction

Situation: Outrigger beam has retracted and O/R extended width decreases, close to the lifting capacity change over point.

Cause: Outrigger beam(s) have just retracted.

Action: Extend the outrigger beam again.

Message Description

Error : 0005 Boom angle value becomes out of specified range

Situation: Boom extension automatically stops during setting of the side-up jib.

(Only applicable to the machines with side-up jib)

Cause: Boom angle is smaller than that required for jib setting.

Action: Raise the boom till safety angle for jib setting.

Message Description

Error : 0006 Improperly inserted jib lock pin

Situation: Boom extending operation automatically stops during setting or stowing of the side-up jib. (Only applicable to the machines with side-up jib)

Cause: Jib lock pins are in incorrect states.

(Jib lock, jib set and automatic lock pins have been inserted)

Action: Correct the lock pins property inserted.

Message Description

Warning : 0007 Stop at swing angle limit

* The error code is applicable only to models with the slow swing stop function. (Error code is displayed only during either left or right swing operation is peformed.)

Situation: Lifting capacity is exceeded by swing operation.

Crane is automatically stopped if swing automatic stop function is provided.

Cause: The boom is swung into an area where the capacity is reduced due to outrigger extension width and the moment ratio has exceeded 100%.

Action: Swing the boom in the opposite direction.

Retract or raise the boom so that the lifting capacity will not be exceeded.

Message Description

Warning : 0010 Close to the swing angle restriction

* The error code is applicable only to models with the slow swing stop function.

Situation: The boom is just close to the swing restriction angle.

Cause: The swing area restriction function is active, and the boom has been swung to a point just close to the limit. (The error code will remain displayed as long as the boom is in close to the limit for both left and right swing operation)

Error code is displayed only when the slow swing stop function is canceled. (swing is not automatically stopped)

Action: Swing the boom away from the swing restriction point. Cancel the swing area restriction function.

Message Description

Warning : 0012

Rear stability auto. stop range

Situation: The rearward tipping load limit lowers below the current lifting load as the boom is swung.

Cause: The boom is raised too high. The outrigger extension width is insufficient.

Action: Lower the boom. Increase the outrigger extention width.

Message Description

Error : 0013

Error : 0014

Over-front detection switch is defective

Over-front or over-rear detection switch is/are defective

Situation: The swing angle does not conform with the condition detected by the over-front detection switch.

Over-front switch has detected as front though boom doesnot turn front. (Obtains capacity of over-front detection switch as not in front.)

Cause: Over-front detection switch is defective, over-front and/or over-rear detection switch is/are defective, or its wiring is open. Swing angle detector is defective or maladjusted.

Action: Investigate the possible causes described above. The input status can be checked with “Ai & Di check” function from the “Maintenance” menu.

Message Description

Warning : 0015

Two-blocking condition (When two-blocking stop function is cancelled)

Situation: Two-blocking detection switch has been turned off (two-blocking status).

A crane does not stop automatically though the error code is displayed when two-blocking is cleared.

Cause: Main or auxiliary hook block has been wound up excessively.

Action: Hoist down the main or auxiliary winch.

Message Description

Error : 0016

Error : 0017

State 1 is not applied (Outrigger, Swing angle, CW, combinations) State 2 is not applied (Boom and Jib combination)

Situation: Crane is automatically stopped while the outrigger, boom, jib and counterweight settings are out of the allowable condition, and operation toward a critical conditions is attempted.

Cause: The outrigger, boom, jib and counterweight settings are improper.

Action: Register the operation status again.

Message Description

Error : 0018

Boom full retraction switch 1 faulty.

(2nd boom): GR-600-1, GR-800-1, GT-900-1

(2nd--top boom): GR-450-1, GR-500-1

(3rd • top boom): TR-300-4, GR-300-1

Error : 0019

Error : 0020

Error : 0021

(4th -- top boom): TR-150-4, GR-150-1

Boom full retraction switch 2 faulty.

(3rd -- top boom): GR-600-1, GR-800-1, GT-900-1

Boom full retraction switch 3 faulty.

(No use)

Boom full retraction switch 4 faulty.

(2nd • 3rd boom): TR-150-4, GR-150-1

Situation: Crane is automatically stopped when operation toward a critical condition is performed, when the specified boom section full retraction detector switch does not detect full retraction while the specified boom section is fully retracted, or vice versa.

Cause: Boom full retraction detection switch is faulty, or its wiring is open. Boom length sensor is defective or maladjusted. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The input status can be checked with “Ai & Di check” function from the “Maintenance” menu.

Message Description

Warning : 0023 Stopped at 100% of crane performance

Situation: Because the crane performance has exceeded 100%, a crane is automatically stopped when hoisting-up, boom lowering or boom extending is performed.

Cause: The allowable lifting capacity is exceeded.

Action: Perfrom either of hoisting-down, boom raising, or boom retracting.

Message Description

Warning : 0024 Stop due to two-blocking

Situation: Crane is automatically stopped when operation toward a critical condition is performed while the two-blocking detection switch is turned off (Two-blocking status).

Cause: Main or auxiliary winch hook block has been wound up excessively.

Action: Hoist down the main or auxiliary winch.

Message Description

Warning : 0025 Stopped due to backward stability

Situation: The crane is in a state where the backward stability is not assured, boom raising/retracting operation should be stopped automatically.

Cause: The boom angle is too large, or the boom length is insufficient. The outrigger extension width is too small.

Action: Lower the boom, extend the boom, or increases the extension width of outriggers.

Message Description

Warning : 0026 Stopped at upper boom angle limit restriction

Situation: Crane operation is automatically stopped when operation toward a critical condition is attempted while boom angle exceeds the upper limit.

Cause: The upper boom angle limit restriction is set, and the boom angle has exceeded the limit.

Action: Lower the boom.

Cancel the upper boom angle limit restriction.

Message Description

Warning : 0027

Stopped at lower boom angle limit restriction

Situation: Crane operation is automatically stopped when operation toward a critical condition is attempted while boom angle exceeds the lower limit.

Cause: The lower boom angle limit restriction is set, and the boom angle has exceeded the limit.

Action: Raise the boom.

Cancel the lower boom angle limit restriction.

Message Description

Warning : 0028

Stopped at lifting height restriction

Situation: Crane operation is automatically stopped when operation toward a critical condition is attempted while lifting height exceeds the limit.

Cause: The lifting height limit restriction is set, and the top boom head’s height has exceeded the limit.

Action: Lower or retract the boom. Cancel the lifting height restriction function.

Message Description

Warning : 0029

Stopped at load radius restriction

Situation: Crane operation is automatically stopped when operation toward a critical condition is attempted while the load radius exceeds the limit.

Cause: The load radius restriction is set, and the load radius has exceeded the limit.

Action: Raise or retract the boom. Cancel the load radius restriction function.

Message Description

Warning : 0034

Warning : 0035

Stopped by main winch over-unwinding prevention device

Stopped by aux. winch over-unwinding prevention device

Situation: Hoisting-down is automatically stopped by over-unwinding prevention device as the main/aux. wire rope on the winch drum is drawing to the end.

Cause: The number of wire rope part line on the hook block is wrong. The hook block position is too low.

Action: Adjust the number of part line as specified, or perform winch winding operation.

Message Description

Error : 0037 Defective accumulator pressure (sensor)

Situation: Abnormal accumulator pressure is detected. (Only for models with accumlator pressure detector)

(This message does not relate to the control by the AML)

Cause: Accumulator pressure is too low. Accumulator pressure detector is defective, or its wiring is open. AML (analog circuit board) is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 0041

Warning : 0078

Wrong counterweight state registered Altered counterweight state

Situation: Crane operation is automatically stopped when operation toward a critical condition is attempted when the detected counterweight status is different from the registered one. (Applicable only to the error code 0041) (Crane does not stop automatically when “Warning:0078” is displayed)

Cause: Defective counterweight state detector, improper installation or adjustment of the detector, open wiring of the detector circuit. Altered combination of the counterweight.

Action: Search for the cause of the detector defect. The status of any input from the detector can be checked using the “Di check” function from the “Maintenance” menu. Register the counterweight state again.

Message Description

Warning : 0042

Warning : 0043

Right swing restriction limit

Left swing restriction limit

Situation: Boom is swung to a point exceeding the swing restriction limit setting. Crane is automatically stopped if swing automatic stop function is provided.

Cause: The swing restriction limit function is set, and swing position has been exceeded the limit.

Action: Swing the boom in the opposite direction to the setting. Cancel the swing restriction function.

Message Description

Warning : 0046 Condition setting altered

Situation: Crane state has changed.

Cause: Outrigger jacks have been retracted.

Action: Register operation status again.

Message Description

Warning : 0047 Hook block contacts to the elevating cylinder

Situation: Hook block approaches the space where it can hit the elevation cylinder rod.

Cause: Boom raised too high while it is almost fully retracted.

Action: Extend or lower the boom.

Message Description

Warning : 0056 Swing operation is dangerous

Situation: The lifting capacity will be exceeded if the boom is swung further.

Cause: The boom has been swung to a point just before the region where the capacity is reduced in retraction with outrigger extension width.

Action: Swing the boom in the opposite direction. Retract or raise the boom so that the lifting capacity will not be exceeded.

Message Description

Warning : 0057

Warning : 0058

Warning : 0059

Warning : 0060

Right front outrigger state change

Right rear outrigger state change

Left front outrigger state change

Left rear outrigger state change

Situation: Outrigger state has changed as to decrease extension. Crane performance shifted to that with a smaller outrigger extension width. A crane does not stop automatically.

Cause: Outrigger extension width has decreased unintentionally.

Action: If reduced capacity does not matter, continue to use the crane. If the capacity is expected to be exceeded, re-extend the outrigger further and register working state again.

Message Description

Error : 0067

Abnormal moment [Strain gauge detector] Does not stop

Warning : 0113 Abnormal moment [Pressure sensor detector] Can not operate to dangerous direction

Situation: Actual lifting load display value calculated in the AML becomes a minus value because of an abnormal moment detector.

Therefore, re-adjustment of the moment detector is required.

(0067: Only warning, automatic stop does not work)

(0113: Crane operation is stopped when operation toward a critical condition is attempted)

Cause: Abnormal detectors (Boom length detector, strain gauge type and/or pressure sensor type moment detector).

Maladjusted detector.

Abnormal AML main body (Analog board).

[Warning : 0113] Moment value can not be detected because the elevating cylinder has retracted to the stroke end.

* This warning (0113) is output when actual lifting load display value that calculate in the AML becomes a minus value. Abnormal minus load value is difference due to the boom condition.

Action: Readjust the corresponding detector (pressure sensor). Investigate the detector which seems to be defective. Input status from the detector can be confirmed by “Ai” check of “Maintenance” menu and “Elevating cylinder pressure monitor”.

(“Ai” check related items: [Boom L], [Boom A], [MMT V], [DRC EXT], [DRC RTR] etc.)

Raise the boom. (error code: In case of 0113)

Message Description

Error : 0068

Error : 0069

Error : 0070

Error : 0071

Error : 0072

Error : 0073

Error : 0074

Situation:

Abnormal swing angle

Abnormal boom length

Abnormal boom angle

Abnormal extension width of the right front outrigger

Abnormal extension width of the right rear outrigger

Abnormal extension width of the left front outrigger

Abnormal extension width of the left rear outrigger

The detected value from the corresponding detector is out of the normal range and the detector requires readjustment.

Alarm is output but automatic stop does not work. For the errors which cause automatic stop, see the fllowing ones.

Abnormal swing angle

Abnormal boom length

Abnormal boom angle

Message : 2016 - 2019, 2021

Message : 2007, 2008

Message : 2004

Abnormal outrigger extension widthMessage : 2009 – 2012

Cause: Misadjastment or misalignment.

Improper installation of the detector.

The AML itself is defective. (Analog board is defective)

Action: Readjust the corresponding detector. Insrall the corresponding detector properly and readjust it.

If the detectors are not defective, replace the AML main unit (analog board).

Error Messa g e

Message Description

Warning : 0075 Spring lock state has changed

Situation: Spring lock state has changed. (Only for models with spring lock state detection)

Cause: Spring lock released unintentionally. Spring lock has been released by mistake.

Action: Set spring lock again.

Message Description

Warning : 0077 Altered front or rear jack state

Situation: The actual front or rear jack state has changed from the registered one. (Only for models with spring lock state detection)

Cause: Front or rear jack has operated. Defective detector.

The AML itself is defective. (Analog board is defective)

Action: Return the front or rear jack to the original condition. Check the detector using “Di check” function on “Maintenance” menu.

Message Description

Warning : 0078 Altered counterweight state (refer to 0041)

Message Description

Warning : 0081 Elevation motion slowing down

* This error code is applicable only to models with the slow elevation stop function.

Situation: The boom elevation slow stop function is activated, slowing down boom elevation motion.

Cause: The boom has been elevated close to a stop angle (100% stop, restriction limit stop, stroke end stop, or rear stability stop), and the elevation slow stop function has been activated, and the elevation speed is reduced. (The error code is displayed only when the boom is being elevated)

Action: Stop operating the boom.

Operate the boom in the opposite direction, whether it is rising or lowering. Cancel the boom angle limit restriction function. Move the boom to the non-critical side.

Message Description

Warning : 0082 Swing motion slowing down

* This error code is applicable only to models with the slow swing stop function.

Situation: The slow swing stop function is activated, slowing down boom swing motion.

Cause: The boom has swung close to a stop angle (either 100% stop or range limit stop) and the slow swing stop function has been activated, and swing speed is reduced. (The error code is displayed only when the boom is being swung to the left or right)

Action: Stop the swing operation. Swing away from the limit.

Retract or raise the boom so that the lifting capacity will not be exceeded. Cancel the swing limit restriction function.

Message Description

Warning : 0085 Elevation stopped at stroke end

* Applicable to the models with the oil pressure detection method.

Situation: Crane operation is automatically stopped when operation toward a critical condition is attempted while boom elevating operation is stopped due to elevation stroke end.

Cause: Boom elevating is automatically stopped just before the elevating cylinder stroke end because the moment cannot be detected correctly by the oil pressure in the elevating cylinder if the cylinder is reached/extended to stroke end.

Action: Stop operation which has caused automatic stop. Operate the boom in the opposite direction which has caused automatic stop.

Message Description

Warning : 0088 Stopped at jib limit

* This error code is applicable only to models with jib extension status monitoring.

Situation: Crane operation is automatically stopped when operation toward a critical condition such as hoisting-up, lowering or extending the boom is attempted.

Cause: In the state of AML setting to boom while extending the jib, is exceeding the lifting capacity.

Action: Perform operation toward non-critical condition, such as hoisting-down, raising or retracting the boom.

Message Description

Warning : 0113 Abnormal moment [Pressure senser detector] (refer to 0067)

Message Description

Warning : 0117 Boom contact warning

Situation: The boom approaches the mirror or engine cover, etc.

Cause: The boom, stowing jib and/or elevating cylinder approach (es) the mirror or engine cover etc. of the carrier, there is a possibility to come in contact if operating the boom lowering or swinging further.

Action: Operate watching the obstacles when operating the boom lowering or swinging.

4.2 Group Code 1

Message Description

Error : 1001

Error : 1002 Serial port transmission line 1 open Serial port transmission line 2 open

Situation: All operations except boom swing are unavailable because the transmitter cannot receive any signal from the AML.

Cause: A part of wiring to the transmitter is open. The connector pins of wiring to the transmitter are in poor contact. The receiving circuit of transmitter or the transmitting circuit of AML is defective.

Action: Check the wiring to the transmitter for continuity. If no continuity exists, replace or repair the wiring.

Replace the transmitter or AML’s power circuit board.

Message Description

Error : 1003

Error : 1004 Serial port receiving line 1 open Serial port receiving line 2 open

Situation: All operations except boom swing are unavailable because the AML cannot receive any signal from the transmitter.

Cause: The line from the transmitter includes open wiring or poorly contacting connection. The transmitter is not connected (the connector is disconnected). The receiving circuit of AML or the transmitting circuit of transmitter is defective. The serial port fuse (SIF1, 2) of AML has blown.

Action: Check the wiring to the transmitter for continuity. If no continuity exists, replace or repair the wiring.

Replace the transmitter or AML’s power circuit board. Replace the serial port fuse of AML.

Message Description

Error : 1005

Error : 1006

Transmitter 1 defect

Transmitter 2 defect

Situation: All operations except boom swing are unavailable due to the faulty transmitter.

Cause: The internal circuit of transmitter is defective.

Action: Replace the defective transmitter.

Message Description

Error : 1007

Error : 1008

Error : 1009

Error : 1010

Transmitting data error at serial port 1

Transmitting data errot at serial port 2

Receiving data error at serial port 1

Receiving data error at serial port 2

Situation: All operations except boom swing are unavailable due to a discrepancy between the data transmitted/received by the AML and the data received/transmitted by the transmitter.

Cause: The data has been garbled due to noise (external radio wave interference). The signal wire connection is in poor contact.

Action: Turn off any device which is emitting strong noise. Check the signal wire for poor connection. Repair or replace the wiring as appropriate.

Message Description

Error : 1011

Error : 1012

Transmitter type improper (serial port 1)

Transmitter type improper (serial port 2)

Situation: All operations except boom swing are unavailable due to the wrong transmitter connected to the serial port.

Action: Connect a proper transmitter to the serial port.

4.3 Group Code 2

Message Description

Error : 2001 Moment detector trouble

Situation: All operations except boom swing are unavailable due to the abnormal input value from the moment detector.

Cause: The moment detector is defective, or its wiring is open. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2003 Boom length detector trouble

Situation: All operations except boom swing are unavailable due to the abnormal input value from the boom length detector.

Cause: The boom length detector is defective, or its wiring is open. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2004 Boom angle detector trouble

Situation: All operations except boom swing are unavailable due to the abnormal input value from the boom angle detector.

Cause: The boom angle detector is defective, or its wiring is open. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2005 Jib length detector trouble

Situation: All operations except boom swing are unavailable due to the abnormal input value from the jib length detector.

Cause: The jib length detector is defective, or its wiring is open. The transmitter unit is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2006 Jib angle detector trouble

Situation: All operations except boom swing are unavailable due to the abnormal input value from the jib angle detector.

Cause: The jib angle detector is defective, or its wiring is open. The transmitter unit is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2009

Error : 2010

Error : 2011

Error : 2012

Right front outrigger length detector trouble

Right rear outrigger length detector trouble

Left front outrigger length detector trouble

Left rear outrigger length detector trouble

Situation: The input data from the outrigger length detector are abnormal.

Cause: The outrigger length detector is defective, or its wiring is open. The AML outrigger length detector is maladjusted. (For multiplex data transmitter) The transmitter unit is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2017

Error : 2019

Swing angle detector 1 trouble (swing dead angle switch OFF)

Swing angle detector 2 trouble (swing dead angle switch ON) (same as swing angle detector 1,2 select switch)

Situation: All operations except boom swing are unavailable due to the input data from the swing angle detector inconsistent with the swing dead angle detector switch position.

Cause: Swing angle detector is faulty or maladjusted, or its wiring is open. Swing dead angle detector switch is faulty or maladjusted, or its wiring is open. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai & Di check” function from the “Maintenance” menu.

Message Description

Error : 2021 Swing angle detector offset trouble

Situation: All operations except boom swing are unavailable due to the abnormal offset value of the swing angle detector 1 or 2.

Cause: The swing angle detector is faulty. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

Message Description

Error : 2022

Error : 2023 Boom elevation cylinder extension pressure detector trouble Boom elevation cylinder retraction pressure detector trouble

Situation: All operations except boom swing are unavailable due to the abnormal input value from the oil pressure detector in the boom elevating cylinder’s extension/retraction chamber.

Cause: The pressure detector is defective, or its wiring is open. The AML itself is defective.

Action: Perform inspection for the possible causes listed above. The status of any input from the detector can be checked using the “Ai check” function from the “Maintenance” menu.

( “Ai check” related items : [DRC EXT], [DRC RTR]

4.4 Group Code 3

Message Description

Error : 3003

System trouble (sum check error)

Situation: All operations except boom swing are unavailable because ROM has been found abnormal as a result of sum check.

Cause: The AML‘s CPU board is defective. ROM defective.

Action: Replace the AML’s CPU board. Replace ROM.

Message Description

Error : 3006

System trouble (EEPROM defect)

Situation: All operations except boom swing are unavailable because AML cannot write on its nonvolatile memory (EEPROM).

Cause: The AML’s CPU board is defective. EEPROM is defective.

Action: Replace the AML’s CPU board or EEPROM.

Message Description

Error : 3007

Error : 3008

Error : 3009

Error : 3011

Error : 3012

Error : 3013

Error : 3017

System trouble (RAM trouble)

System trouble (RAM trouble)

System trouble (CPU trouble)

System trouble (bus error)

System trouble (address error)

System trouble (unauthorised instruction)

System trouble (privilege violation)

Situation: All operations except boom swing are unavailable because software program cannot run normally.

Cause: The AML’s CPU board is defective.

Action: Replace the AML’s CPU board. If this error has occurred, the relevant error message is displayed and the AML stops processing. (There is a continuous beep and two LEDs in the adjustment window illuminate)

While the AML’s CPU board is suspected to be defective, check the inside of the AML for any abnormality such as loose connectors.

Message Description

Error : 3010

System trouble (A/D converter trouble)

Situation: All operations except boom swing are unavailable due to abnormal input to the A/D converter.

Cause: AML’s CPU board and/or analog board are defective. Wiring for the analog defector is abnormal (short-circuit).

Action: Replace the AML’s CPU board and/or analog board. Check the connection (resistance) of analog detectors (one connected with AML itself).

Disassembly of AML Main Unit

Disassembly of AML Main Unit

1. Removing Front Panel/Display Board

[NOTICE]

◆Do not touch each front and rear face of the boards by hand when removing the boards.

1. Take off the front panel and display board as an assembly from the unit case by unscrewing screw(a).

2. Removing Rear Panel/Connector Board/Current Output Board

[NOTICE]

◆Do not touch each front and rear face of the boards by hand when removing the boards.

1. Take off the rear panel, connector board and current output board as an assembly from the unit case by unscrewing screw(c). Rear panel

2. Separate the display board by unscrewing screw(b).

IW301-0131E21 board

2. Separate the current output board by unscrewing screw(d). Then remove the spacer(e) and separate the connector board.

Display board

IW301-0131E20

IW301-0131E22

Disassembly of AML Main Unit

3. Removing CPU Board/Analog Board /Power Board

[NOTICE]

◆Do not touch each front and rear face of the boards by hand when removing the boards.

1. Take off the front panel and display board as an assembly from the unit case by unscrewing screw(a). Then take off the rear panel, connector board and current output board as an assembly from the unit case by unscrewing screw(c).

3.1 Notes on ROM/EEPROM Replacement

[NOTICE]

◆EEPROM stores the adjustment values for each specification number. When replacing the CPU board, reuse the EEPROM after removing it from the broken CPU board.

When replacing ROM and EEPROM, make sure that the concavities of IC and socket meet each other.

2. Take off the CPU Board by unscrewing screw(f). Then remove the spacer(h) and take off the analog board and power board as an assembly from the unit case. Next, separate the analog board by removing nut(g).

Adjustment Value Table

[INFORMATION AND DATA]

Adjustment Value Table

Specification No. : GR-450-1-00101 (2M2D-specification)

AML model : AML-L C

AML code No. : 361-900-60000

1. Setting before adjustment

Capacity setting

Head-off capacity setting Jib selection Single top selection Winch drum position setting

Not set Not set Not set Not set

2. Adjustment the detector

Precautions for adjustment

(*1) Adjust the center of dispersion to coincide to the adjusting value.

(*2) Adjust the boom angle and the moment in the elevating lowering operation.

(*3) Adjust the swing angle in the clockwise swing operation.

(*4) When adjusting the moment, make the number of parts of line to the standard number (four parts of line) that is when boom fully extended, and set the AML as Boom status: Boom and Number of parts of line:4.

Zero-point adjustment