Chapter 3 Machine Disassembly and Replacement

Machine Disassembly and Replacement

This chapter contains step-by-step procedures on how to disassemble the notebook computer for maintenance and troubleshooting. To disassemble the computer, you need the following tools:

Wrist grounding strap and conductive mat for preventing electrostatic discharge

Flat-bladed screwdriver

Phillips screwdriver Tweezers

Flat-bladed screwdriver or plastic stick NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components.

Before You Begin

Before proceeding with the disassembly procedure, make sure that you do the following: 1. Turn off the power to the system and all peripherals. 2. Unplug the AC adapter and all power and signal cables from the system. 3. Remove the battery pack.

Connector Types

There are two kinds of connectors on the system board:

Connectors with no locks Unplug the cable by simply pulling out the cable from the connector.

Connectors with locks You can use a plastic stick to lock and unlock connectors with locks.

Unplugging the cable with locks

To unplug the cable, first unlock the connector by pulling up the two clasps on both sides of the connector with a plastic stick. Then carefully pull out the cable from the connector.

Plugging the cable with locks

To plug the cable back, first make sure that the connector is unlocked, then plug the cable into the connector.

With a plastic stick, press the two clasps on both sides of the connector to secure the cables in place.

NOTE: The cables used here are special FPC (flexible printed-circuit) cables and more delicate than normal plastic-enclosed cables. Do not force cables out of the connectors to prevent damage.

Unplugging the Cable Plugging the Cable

Plugging the Cable Unplugging the Cable

The flowchart on the succeeding page gives you a graphic representation on the entire disassembly sequence and instructs you on the components that need to be removed during servicing. For example, if you want to remove the system board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.

START

DIMM Door Hinge caps Middle Cover (short) Modem Cover Battery Pack

DIMM Module

86.1A522.140 *2 Screw MACH PAN M2*14L

LCD FPC Cable from M/B Middle Cover (Long)

LED Board Cable from M/B Modem Board Battery Door

Keyboard

86.1A353.135 *2 Screw MACH PAN M2.5 *13.5L LCD Module

LCD Bezel

Main Unit (see next page)

86.9A523.6R0 *5 Screw M2.5*6L B/ZN

86.9A522.4R0 *2 Screw MACH PAN M2*4L 86.5A524.4R0 *4 Screw M3*4L LCD & Inverter board

Inverter Board

LCD FPC Cable 86.9A522.4R0 *2 Screw MACH PAN M2*4L

LED Board

LED Board Cable

LCD Panel

Main Unit

Heatsink

86.1A523.6R0*2 Screw 86.1A522.140*3 Screw

Cover Switch Cable from M/B

86.1A523.6R0 *2 Screw MACH M2.5 *6L NI Touchpad Board Cable from M/B HDD Module RTC Battery Cable from M/B

Upper case

86.1A353.135 *10 Screw MACH PAN M2.5*13.5L 86.1A523.6R0 *1 Screw MACH M2.5*6L

Battery and Audio Board

86.9A522.4R0 *4 Screw MACH PAN M2*4L B/ZN

L/R Channel Speaker FDD & CD-ROM Cable from M/B Touchpad Module

86.9A522.3R0 *6 Screw MACH M2*3L

CD-ROM & FDD Module Touchpad Board

86.1A523.6R0 *2 Screw MACH M2.5*6L NI

Mainboard

Modem Bracket

Modem Connector

Lower case

1. Press the battery cover release latch down and slide the battery pack out from the main unit. 2. Remove the battery cover from the battery pack carefully.

Removing the DIMM

1. To remove the DIMM module, remove the two screws from the DIMM cover. 2. Then, remove the DIMM cover from the lower case.

3. Use two flat-bladed screwdrivers to push the latches outward on both sides of the DIMM socket. 4. Then, remove the extended DIMM module from the DIMM socket.

Removing the Modem Board

1. To remove the modem board, first remove the screw from the modem cover. 2. Remove the modem cover from the lower case.

3. At CN20, remove the modem board from the mainboard. 4. Disconnect the modem power cable from the modem board.

Removing the Keyboard

1. Slide out the right and left hinge cover from the main unit. 2. Use a flat-bladed screwdriver to remove the short middle cover.

3. Slide the long middle cover to the left side then remove it from the upper case.

4. Pull out and upward to expose the keyboard connector at CN19, and disconnect the keyboard cable from the keyboard connector carefully.

1. Remove the two screws holding the LCD FPC cable 2. At CN9, disconnect the LCD FPC cable from the mainboard.

3. At CN7, disconnect the LED cable from the mainboard.

4. Remove the two screws holding the LCD module as shown. 5. Next, remove the LCD module from the main unit.

1. Remove the two rubber LCD cushions and the 3 hinge screw caps from the LCD module.

2. Remove the five screws from the LCD module, and snap out the LCD bezel. 3. Then, remove it from the LCD module.

4. Remove the two screws holding the LED board, and remove the LED board from the LCD panel. 5. Disconnect the LED cable from the LED board.

6. Remove the four screws holding the two LCD hinges, then remove the hinges.

8. Disconnect the LCD power cable and LCD FPC cable from the inverter board.

9. Remove the four screws holding the LCD, then gently remove the LCD from the LCD panel.

10. Tear off the adhesive tape. 11. Disconnect the LCD FPC cable from the LCD.

Removing the Heatsink and CPU EMI Shield

1. Remove the five screws holding the system heatsink. 2. Slide the heatsink to the left side and take it out from the main unit.

3. Remove the CPU EMI shield from the main unit. 4. At CN8, disconnect the RTC battery cable from the mainboard and then lift it away from the upper case.

Removing the Hard Disk Drive

1. At CN17, remove the hard disk drive from the mainboard.

2. At CN18, disconnect the touchpad cable from the mainboard.

1. To release the upper case, first remove the eleven screws from the main unit. 2. Lift the upper case gently.

3. At CN6, disconnect the cover switch cable from the mainboard, then remove the upper case.

Removing the Floppy Disk Drive/CD-ROM Drive Combo Module

1. Disconnect the CD-ROM drive cable and floppy disk drive cable at CN16 and CN 15 respectively.

2. Remove the screw shown here. 3. Remove the CD-ROM drive screw cap from the bottom of the main unit. 4. Remove the screw shown here.

5. Now, remove the floppy disk drive and CD-ROM drive combo module from the main unit.

Removing the Speakers

1. Disconnect the left and right speaker cables from the audio I/O and battery connection board at CN1 and

CN2 respectively.

2. Remove the four screws holding the two speakers, then remove the two speakers from the lower case.

1. Remove the two screws holding the audio I/O and battery connection board, then remove it from the mainboard.

Removing the Fan

1. Disconnect the fan cable from the mainboard. 2. Remove the two screws holding the fan, then lift the fan from the lower case.

Removing the Mainboard

1. Remove the two screws holding the mainboard, then remove the mainboard from the lower case. 2. Remove the modem phone jack connector from the lower case.

1. Remove the four screws holding the PCMCIA slot. 2. At CN13, disconnect the PCMCIA slot from the mainboard.

Removing the Touchpad Module

1. To remove the touchpad module, first release the touchpad cable from the position shown here. 2. Remove the six screws holding the touchpad bracket. 3. Now, lift the touchpad module away from the upper case.

4. Disconnect the touchpad cable from the touchpad board, then remove the touchpad bracket.

1. To disassemble the hard disk drive module, first remove the six screws as shown here.

2. Detach the left and right brackets from the hard disk drive. 3. Remove the hard disk drive connection board from the hard disk drive.

1. To disassemble the CD-ROM drive from the combo module, first remove the three screws as shown here..

2. Disconnect the CD-ROM FPC cable, then slide out the CD-ROM drive from the chassis. 3. Remove the CD-ROM FPC cable from the chassis.

4. To remove the floppy disk drive from the combo module, first remove the three screws as shown here.

5. Remove the floppy disk drive from the chassis. 6. Disconnect the floppy disk drive FPC cable from the floppy disk drive.