Acer Travelmate 4720 Service Guide

Chapter 351
Removing the Battery Pack
1.Turn base unit over. 
2.Slide the battery lock/unlock latch to the unlock position (1). 
3.Slide and hold the battery release latch to the release position (2), then remove the battery from the main 
unit (3). 
Removing the SD Dummy Card
1.See “Removing the Battery Pack” on page 51.
2.Push against the card, as if you were pushing it further into the slot, letting the card spring out.   

52Chapter 3
3.Remove the card from the slot. 
Removing the Express Dummy Card
1.See “Removing the Battery Pack” on page 51.
2.Push the eject button all the way in to release the button. 
3.Push it again to eject the dummy card. 
4.Remove the card  from the slot. 

Chapter 353
Removing the Lower Cover
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.Loosen the four screws (A) on the lower cover.   
5.Remove the screw (B) on the lower cover. 
6.Use a plastic screw driver to pry open the lower cover. 
7.Remove the lower cover from the lower case. 
Removing the DIMM 
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See...

54Chapter 3
5.Push out the latches on both sides of the DIMM socket to release the DIMM. 
6.Remove the DIMM module. 
7.Do the same on the other board.
Removing the WLAN Board Modules
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.Remove the mylar tape from the cable.  

Chapter 355
6.Disconnect the two antenna cables from the WLAN board, then move the antennas away from the board. 
7.Remove the two screws (C) on the WLAN board to release the WLAN board.   
8.Detach the WLAN board from the WLAN socket. 
NOTE:  When attaching the antennas back to the WLAN board, make sure the cable are routed properly. 
Removing the Hard Disk Drive Module 
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card”...

56Chapter 3
5.Pull the HDD module out by pulling on the mylar attached to it, gently slide-out the HDD module from its 
bay. 
NOTE:  To prevent damage to device, avoid pressing down on it or placing heavy objects on top of it. 
6.Remove the HDD rubber enclosure by gently prying open the enclosure, starting on either side (3) and 
proceeding down the bottom (4) and towards the top of the disk (5), then pull it up to detach from the HDD 
module (6).  

Chapter 357
7.Remove the two screws (D) on the HDD bracket. 
8.Remove the bracket as shown. 
Removing the Optical Drive Module
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.Turn the base unit over, then remove the screw (E) on the bottom side of the unit. 
StepSize (Quantity)ColorTo r q u e
7 M3 x L4 (2) Silver 1.6 kgf-cm
StepSize (Quantity)ColorTo r q u e
1...

58Chapter 3
6.Using the flat screwdriver, press the end of the module forward, then slide out the optical drive module 
from the main unit.   
7.Remove the two screws (F) securing the optical bracket and remove the locker bracket from the optical 
disk drive module.   
StepSize (Quantity)ColorTo r q u e
1-2 M2 x L2.5 (2) Silver 1.6 kgf-cm 

Chapter 359
Main Unit Disassembly Process
Main Unit Disassembly Flowchart
MAIN UNIT
KEYBOARD
MAIN UNIT DISASSEMBLY
MIDDLE
COVER
LCD MODULE
Ex4
UPPER CASE
Ax1, Ex11
TOUCHPAD BRACKET
ASSEMBLY
Cx4
CPU HEATSINK
MODULE Hx2
FA N
Gx1
FINGERPRINT
BOARDTOUCHPAD BOARD
Ax5
CPUCx2
LED INDICATORS
BOARD
Cx2
Cx2
DAUGHTER BOARD
Ax1
MAINBOARD
Cx2
MODEM BOARD
BLUETOOTH BOARD
Dx2
SPEAKER MODULES
LOWER CASE 

60Chapter 3
Removing the Fan Module
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.Detach the heatsink cable. 
6.Detach the tin foil tape on the fan.  Screw List
ScrewPart No.
A M2 x L4 86.00G64.720
C M2 x L3 86.9A552.3R0
D M3 x L4 86.9A524.4R0
E M2.5 x L6 86.00E33.736
G M2 x L3  86.00C07.220
H M2.5 x L5 (torque 1.6)
M2.5 x L5 (torque 3.0)86.00F87.735