Acer Travelmate 620 Service Guide

							Chapter 343
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 screw driver
!Phillips screw driver
!Tw ee z e rs
!Plastic Poker
!Hex screw driver
!Plastic flat screw driver
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.
Chapter 3
Machine Disassembly and Replacement 
						

							44Chapter 3
General Information
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. 
						

							Chapter 345
Disassembly Procedure Flowchart
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
BatteryDIMM CoverCD/DVD ROM
ModuleHDD Cover
Main Unit
(see next page
for details)
Modem BoardDIMM
HDD Module
HDD Bracket
HDD
CD/DVD ROM
Drive
CD/DVD ROM
FPC Cable
A x 2 B x 2 
						

							46Chapter 3
Screw List
ItemDescription
A Screw M2 X L4 (Black)
B Screw M2.5 X L6 (Black)
C Screw M2.5 X L8 ((Black)
D Screw M2.5 X L3.5 (Black)
E Screw M2 X L5 (Black)
F Screw M2.5 X L10 (Black)
G Screw M2 X L3 (Silver)
Main Unit
Middle Cover
Touchpad
Frame
KeyboardC x 2 C x 2
LCD Module
LCD Bezel
Touchpad
RTC batteryHeatsink Plate
CPU Fansink
CPUUpper CaseLower Case
LCD
LCD Bracket
Speakers
Daughter BoardMain Board
Modem CablePCMCIA Socket
C x 6
E x 4
G x 6D x 4 CPU Screw x 4
C x 1C x 6
A x 2
A x 2
A x 2
Inverter Board
F x 2 
						

							Chapter 347
Removing the Battery Pack
1.
Push the battery release button inward.
2.
Slide the battery pack out from the main unit.
 
  
						

							48Chapter 3
Removing the External  DIMM Module
1.
Remove the 2 screws of the DIMM cover, then remove the DIMM cover from the lower case.
2.
Push out the latches on either side of the DIMM socket and remove the DIMM memory.
   
						

							Chapter 349
Removing the External Modem Combo Card
1.
Remove the 2 screws of the DIMM cover and remove the DIMM cover from the lower case.
2.
Remove the 2 screws on the modem board and remove the modem board from the main board.
3.
Disconnect the modem power cable from the modem board. 
						

							50Chapter 3
Removing the CD-ROM/DVD-ROM Module
1.
Push the CD-ROM module release button inward.
2.
Slide the CD-ROM module out from the main unit. 
						

							Chapter 351
Removing the Hard Disk Drive Module
1.
Remove the screw of the hard disk cover, then remove the HDD cover.
2.
Pull the plastic tag to remove the HDD module. 
						

							52Chapter 3
Disassembling the Main Unit
Removing the Middle Cover
1.
First, release the 2 screws on the rear of the unit.
2.
Pry up the middle cover from both sides, then remove it from the main unit.
Removing the Keyboard
1.
See “Removing the Middle Cover” on page 52
2.
Remove the 2 screws from the rear of the unit as shown, then poke the 3 guide pins downward to release 
the keyboard.
3.
Lift the keyboard up and put it on the upper case. 
4.
Disconnect the keyboard cable from the main board.