System Disassembly

Chapter 3

This chapter provides step-by-step instructions on how to disassemble the notebook computer for maintenance and troubleshooting purposes.

Disassembly Tools

In performing the disassembly process, you will need the following tools:

  • Wrist-grounding strap and conductive mat for preventing electrostatic discharge
  • Philips screwdriver
  • Flat screwdriver
  • Hex screwdriver
  • Flat plastic screwdriver
  • Plastic tweezers

Stages of the Disassembly Process

The disassembly process is divided into three stages:

  1. External modules disassembly
  2. Main unit disassembly a. Upper case disassembly b. Lower case disassembly
  3. LDC module disassembly

IMPORTANT: The disassembly procedure described in this chapter is a gradual process, as illustrated in the flowcharts preceding each disassembly stage section. This means that users need to observe the instructions in a step-by step manner. To illustrate, removing the HDD assembly will require that you first remove the battery pack and the stylus. Failure to observe the gradual flow of the process may result in component damage.

NOTE: To reinstall the system components and assemble the unit, perform the disassembly procedures in reverse.

Equivalent Torque Values

Torque values indicated in this chapter are expressed in kgf-cm (kilogram force-centimetre). For equivalent values in in-lb (inch-pound force) and Nmm (milli Newton meter), refer to the table below.

Torque Units

kgf-cm

in-lb

Nmm

Torque values

1.6

1.39

156.91

3

2.60

294.21

4

3.47

Listed below are the screw types used in this system, plus their corresponding part numbers.

NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with their corresponding components to avoid mismatches when putting back the components.

Screw

Type

Color

Part Number

A

M2 x L8BZN+NYLOK

Black

86.00D75.220

B

M2 x L4 BZN

Black

86.00A02.140

C

M2.5 x L8 BZN+NYLOK

Black

86.00E34.738

D

M2 x L4 BZN+NYLOK

Black

86.00E13.524

E

M3 x L4

Silver

86.9A554.4R0

F

M2 x L3BZN+NYLOK

Black

86.00E25.723

G

M2 x L2.5 BZN+NYLOK

Black

86.00D72.620

H

M2.5 x L12 BZN+NYLOK

Silver

86.00E67.63C

I

M2.5 x L4 BZN+NYLOK

Black

86.00D30.630

J

M2.5 x L6 BZN+NYLOK

Black

86.00E33.736

K

M2 X L2 NI

Silver

86.00D77.320

L

M2.5 x L5 BZN+NYLOK

Black

86.00F19.735

M

M2.5 x L3 BZN+NYLOK

Black

86.00D52.630

Pre-disassembly Procedure

Before proceeding with the disassembly procedure, perform the steps listed below:

  1. Turn off the power to the computer and all peripherals.
  2. Unplug the power cord from the computer.
6930g Disassembly
  1. Unplug all peripheral cables from the computer.
  2. Close the notebook lid and place the computer on a flat, steady surface.

External Modules Disassembly

External Modules Disassembly Flowchart

Turn off computer and disconnect power cord

SD dummy card

EXpressCard dummy card

Battery pack

DIMM

WLAN board (Dx2)

HDD assembly

ODD assembly

Hard drive shielding (Ex2)

ODD bracket (Cx1)

Heat sink (Dx4, Gx5)

1

1

1

Hard drive module

ODD module (Fx2)

Processor

VGA board (Fx2)

Screw

Type

Part Number

A

M2 x L8BZN+NYLOK

86.00D75.220

B

M2 x L4 BZN

86.00A02.140

C

M2.5 x L8 BZN+NYLOK

86.00E34.738

D

M2 x L4 BZN+NYLOK

86.00E13.524

E

M3 x L4

86.9A554.4R0

F

M2 x L3BZN+NYLOK

86.00E25.723

G

M2 x L2.5 BZN+NYLOK

86.00D72.620

Removing the SD Dummy Card

1. Push against the card, as if you were pushing it further into the slot, letting the card spring out.

2. Pull the SD dummy card out of its slot.

Removing the ExpressCard/54 Dummy Card

1. Push against the card, as if you were pushing it further into the slot, letting the card spring out.

Aspire 3100 Slot

2. Pull the ExpressCard/54 dummy card out of its slot.

Removing the Battery Pack

  1. Turn the unit over with the base facing upward.
  2. Slide the battery lock to the unlock position.

3. Slide the battery release latch to pop up the battery from its bay.

4. Remove the battery pack from its bay.

Removing the Lower Case Cover

1. Remove the screws securing the lower case cover.

Aspire 4540 Disassemble Clean Heat Sink

Step

Type

Quantity

Color

Torque

1

M2 x L8 BZN+NYLOK

1

Black

1.6 kgf-cm +/-15%

M2 x L4 BZN

7

Black

1.6 kgf-cm +/-15%

M2.5 x L8 BZN+NYLOK

1

Black

3 kgf-cm +/-15%

  1. Pry the lower case cover from the main unit, then remove it.
  2. Pry the lower case cover from the main unit, then remove it.

Removing the Memory Modules

1. Push out the latches on both sides of the exterior DIMM slot (DM1).

Aspire 4740g Ram Slot

2. Remove the memory module from its slot.

Aspire 4740g Ram Slot

3. Repeat steps 1 and 2 to remove the second memory module.

Removing the WLAN Board

1. Peel off the end of the bar code tape securing the WLAN antennas.

Step

Type

Quantity

Color

Torque

3

M2 x L4 BZN+NYLOK

2

Black

1.6 kgf-cm +/-15%

  1. Remove the WLAN board from its slot (MINI1).
  2. Remove the WLAN board from its slot (MINI1).

Removing and Dismantling the HDD Assembly

1. Partly peel off the mylar tape (1) and use it to pull the HDD assembly from its connector (2. SATA1).

2. Remove the HDD assembly from the main unit.

Aspire 8730 Hdd Bay

3. Remove the screws on the HDD module shielding.

Step

Type

Quantity

Color

Torque

3

M3 x L4

2

Silver

3 kgf-cm +/-15%

4. Remove the HDD module from its shielding.

Removing and Dismantling the ODD Assembly

1. Remove the screw securing the ODD assembly to the main unit.

Acer 5542 Dismantling

Step

Type

Quantity

Color

Torque

1

M2.5 x L8

1

Black

3 kgf-cm +/-15%

2. Use a plastic flat screwdriver to push the ODD assembly out of the main unit, then slide it out of its bay.

3. Detach the ODD bracket by removing the screws that secure it to the ODD module.

Step

Type

Quantity

Color

Torque

3

M2 x L3 BZN+NYLOK

2

Black

1.6 kgf-cm +/-15%

Removing the Cooling Fan

1. Disconnect the fan cable from its system board connector (FAN1).

Acer Aspire 8942g Cooling Fan

2. Remove the screw securing the fan.

Step

Type

Quantity

Color

Torque

2

M2 x L4 BZN+NYLOK

1

Black

1.6 kgf-cm +/-15%

3. Remove the fan from the main unit.

Removing the Heat Sink

1. Remove the screws securing the heat sink (Discrete model).

Step

Type

Quantity

Color

Torque

1

M2 x L4 BZN+NYLOK

4

Black

1.6 kgf-cm +/-15%

M2 x L2.5 BZN+NYLOK

5

Black

1.6 kgf-cm +/-15%

2. Carefully pull the heat sink from its base, then remove it from the system board.

Removing the Processor

1. Use a flat screwdriver to turn the processor socket lock to the counter-clockwise to the unlock position (note the unlock icon).

2. Partly peel off the processor bar code tape.

3. Hold the processor by its edges and remove it from its socket (U36).

U36 Disassembly

IMPORTANT: When installing a processor, note the golden arrow on the corner to make sure the processor is properly oriented over the socket. Refer to figure above.

Removing the VGA Board

1. Remove the screws securing the VGA board to the system board.

Step

Part Number and Type

Quantity

Color

Torque

1

M2 x L3 BZN+NYLOK

2

Black

1.6 kgf-cm +/-15%

  1. Hold the VGA board by its edges and pull it from its slot (MXM1).
  2. Hold the VGA board by its edges and pull it from its slot (MXM1).

Main Unit Disassembly

IMPORTANT: To prevent from scratching or damaging the LCD panel, cover it with a protective film before disassembling the main unit.

Main Unit Disassembly Flowchart

Screw

Type

Part Number

C

M2.5 x L8 BZN+NYLOK

86.00E34.738

D

M2 x L4 BZN+NYLOK

86.00E13.524

F

M2 x L3BZN+NYLOK

86.00E25.723

H

M2.5 x L12 BZN+NYLOK

86.00E67.63C

I

M2.5 x L4 BZN+NYLOK

86.00D30.630

J

M2.5 x L6 BZN+NYLOK

86.00E33.736

K

M2 X L2 NI

86.00D77.320

Removing the Keyboard

1. Use a flat plastic screwdriver to push the six tabs securing the keyboard to the upper case (U-case).

Plastic Screwdriver

2. Pry the keyboard off to release it from the upper case, then turn it over the palmrest to gain access to the keyboard cable.

3. Disconnect the keyboard cable from its system board connector (KB1) to completely detach the keyboard from the main unit.

Removing the Middle Cover

  1. Open the LCD panel completely to facilitate the easy removal of the middle cover.
  2. Use a plastic flat screwdriver to pry one end of the middle cover. Continue prying on the other side until the cover is released from the U-case.

Removing the LCD Module

1. Pull out the WLAN antennas from underneath the computer base, and then from under the speaker grill.

2. Disconnect the LCD and internal microphone cables from their system board connectors (LCD1, INTMIC1).

Acer Aspire 5542 The Speaker Grill
  1. Close the computer lid and turn the unit over to the base side.
  2. Remove the lower case screws securing the LCD module.

Step

Type

Quantity

Color

Torque

4

M2.5 x L8 BZN+NYLOK

2

Black

3 kgf-cm +/-15%

  1. Turn the unit right side up and open the notebook lid again.
  2. Remove the hinge screws securing the LCD module.

Step

Type

Quantity

Color

Torque

6

M2.5 x L12 BZN+NYLOK

2

Silver

4 kgf-cm +/-15%

7. Detach the LCD module from the main unit.

Proceed to page 55 for instructions on how to disassemble the LCD module.

Removing the Power Board

1. Disconnect the power FPC cable from its power board connector (PWRCN1).

Pwrcn1 Acer

2. Remove the screws securing the power board.

Step

Type

Quantity

Color

Torque

2

M2 x L4 BZN+NYLOK

4

Black

1.6 kgf-cm +/-15%

3. Remove the power board from the upper case.

Removing the Upper Case

1. Disconnect the following system cables from their connectors. * Empowering Key board cable (E_KEY1)

* Speaker cable (SPKR1)
* Power FPC cable (PWRCN1)
Pwrcn1 Acer
* Media FPC cable (MEDIA1)

Turn the unit over to the base side.

Remove the lower case screws securing the upper case.

Acer Aspire 5920g Base

Step

Type

Quantity

Color

Torque

4

M2.5 x L4 BZN+NYLOK

1

Black

3 kgf-cm +/-15%

M2.5 x L8 BZN+NYLOK

10

Black

3 kgf-cm +/-15%

  1. Turn the unit over again and remove the top upper case screws.
  2. Turn the unit over again and remove the top upper case screws.

Step

Type

Quantity

Color

Torque

2

M2.5 x L6 BZN+NYLOK

2

Black

3 kgf-cm +/-15%

M2 x L4 BZN+NYLOK

3

Black

1.6 kgf-cm +/-15%

  1. Pry the upper case from its lower case latches to remove it.
  2. Pry the upper case from its lower case latches to remove it.

Removing the Power FPC Cable

□ Remove the power FPC cable from the upper case.

Removing the Speaker

1. Remove the screws securing the speaker.

Step

Type

Quantity

Color

Torque

1

M2 x L4 BZN+NYLOK

3

Black

1.6 kgf-cm +/-15%

M2 X L2 NI

3

Silver

1.6 kgf-cm +/-15%

  1. Remove the speaker from the lower case.
  2. Remove the speaker from the lower case.

Removing the E-key Board

1. Disconnect the E-key board cable (E_KEY1).

2. Remove the screws securing the E-key board.

Step

Type

Quantity

Color

Torque

2

M2 x L3 BZN+NYLOK

3

Black

1.6 kgf-cm +/-15%

  1. Remove the E-key board from the upper case.
  2. Remove the E-key board from the upper case.

Removing the Launch Board

1. Remove the screws securing the launch board.

Step

Type

Quantity

Color

Torque

1

M2 x L4 BZN+NYLOK

2

Black

1.6 kgf-cm +/-15%

  1. Remove the launch board from the upper case.
  2. Remove the launch board from the upper case.

Removing the Touchpad Board

1. Remove the screws securing the touchpad board bracket.

Step

Type

Quantity

Color

Torque

1

M2 x L4 BZN+NYLOK

3

Black

1.6 kgf-cm +/-15%

2. Detach the touchpad FPC cable from the upper case adhesive tape.

3. Remove the touchpad board bracket from the upper case.

4. Disconnect the touchpad FPC cable.

5. Carefully pry loose the touchpad board from the upper case to detach it.

CAUTION: The touchpad board is glued to the upper case. Remove the touchpad board only if it is defective.

Removing the Modem Board

1. Disconnect the Bluetooth cable from its system board connector (BLUE1).

2. Peel off the tape protecting the Bluetooth and modem cables.

3. Remove the screws securing the modem board.

Step

Type

Quantity

Color

Torque

3

M2 x L3 BZN+NYLOK

2

Black

1.6 kgf-cm +/-15%

4. Remove the modem board from its card reader board connector (MDC1), then disconnect the modem cable from the board.

Bluetooth Reader Aspire 7738g

Removing the Bluetooth Board

□ Remove the Bluetooth board from the lower case.

Removing the Subwoofer

1. Disconnect the subwoofer cable from its system board connector (SPKR2).

2. Remove the subwoofer from the lower case.

Removing the USB Board

1. Disconnect the USB FPC cable from its system board connector (USBCN1).

2. Disconnect the USB FPC cable from the its USB board connector.
Usb Internal 5541 Acer Aspire

Step

Type

Quantity

Color

Torque

3

M2 x L4 BZN+NYLOK

1

Black

1.6 kgf-cm +/-15%

  1. Remove the USB board from the lower case.
  2. Remove the USB board from the lower case.

Removing the System Board

  1. Disconnect the DC-in cable from its system board connector (DC1).
  2. Disconnect the DC-in cable from its system board connector (DC1).
2. Remove the screws securing the system board and the card reader board to the lower case.

Step

Type

Quantity

Color

Torque

2

M2 x L4 BZN+NYLOK

2

Black

1.6 kgf-cm +/-15%

  1. Carefully remove the system board from the lower case.
  2. Carefully remove the system board from the lower case.

Removing the Card Reader Board

1. Remove the screw securing the card reader board to the system board.

Step

Type

Quantity

Color

Torque

1

M2 x L3 BZN+NYLOK

1

Black

1.6 kgf-cm +/-15%

  1. Turn the system board over, and detach the card reader board from its connector (CARDREADER1).
  2. Turn the system board over, and detach the card reader board from its connector (CARDREADER1).

Removing the DC-in Jack

□ Remove the DC-in jack from the lower case.

Removing Jack For Aspire 7535g

LCD Module Disassembly

LCD Module Disassembly Flowchart

^ LCD module

LCD bezel (Jx6)

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