Acer Travelmate 4520 Service Guide

Chapter 341
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  
ScrewTy p ePart Number
C M2.5 x L8 BZN+NYLOK 86.00E34.738
D M2 x L4 BZN+NYLOK 86.00E13.524
F M2 x L3 BZN+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
Main unit
Ke yboa r dMiddle cover
LC D module...

42Chapter 3
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 open the outer edge of the cover, then continue prying on the hinge 
sides until the cover is released from the U-case. 
3.Remove the middle cover from the main unit. 
Removing the Keyboard       
1.Remove the screws securing the keyboard. 
StepTy p e QuantityColorTo r q u e
1M2 x L2.5 BZN+NYLOK2 Silver1.6 kgf-cm +/-15%
Acer TM 4520...

Chapter 343
2.Detach the top edge keyboard 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 LCD Module       
1.Peel off the silver acetic tape protecting the LCD cable. 
Acer TM 4520 SG.book  Page 43  Friday, June 22, 2007  5:43 PM 

44Chapter 3
2.Disconnect the LCD cable from its system board connector (LCD1).
3.Peel off the masking tape securing the WLAN and internal microphone cables to the U-case. 
4.Disconnect the LCD cable from its system board connector (LCD1).
5.Pull out the WLAN antennas from underneath the computer base, and then release them from their 
U-case latches.  
Acer TM 4520 SG.book  Page 44  Friday, June 22, 2007  5:43 PM 

Chapter 345
6.Disconnect the internal microphone cable from its system board connector (INTMIC1).
7.Release the internal microphone cable and the  WLAN antenna (white) from their 
U-case latches. 
8.Release the  WLAN antenna (black) from their U-case latches. 
9.Close the computer lid and turn the unit over to the base side. 
Acer TM 4520 SG.book  Page 45  Friday, June 22, 2007  5:43 PM 

46Chapter 3
10.Remove the lower case screws securing the LCD module. 
11 .Turn the unit right side up and open the notebook lid again.
12.Remove the hinge screws securing the LCD module.   
13.Detach the LCD module from the main unit. 
Proceed to page 57 for instructions on how to disassemble the LCD module. 
StepTy p e QuantityColorTo r q u e
10M2.5 x L8 BZN+NYLOK2Black3 kgf-cm +/-15%
StepTy p e QuantityColorTo r q u e
12M2.5 x L12 BZN+NYLOK2 Silver4 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 46  Friday,...

Chapter 347
Removing the Upper Case     
1.Disconnect the following system cables from their board connectors. 
t     Notebook lid cable (LID1)
t     Fingerprint board cable (FP1)
t     Touchpad board cable (TPAD1)
Acer TM 4520 SG.book  Page 47  Friday, June 22, 2007  5:43 PM 

48Chapter 3
t     LED board cable (LEDB1)
2.Turn the unit over to the base side. 
3.Remove the lower case screws securing the upper case. 
4.Turn the unit over again and remove the single top upper case screw. 
StepTy p e QuantityColorTo r q u e
3M2.5 x L4 BZN+NYLOK11 B l a c k3 kgf-cm +/-15%
StepTy p e QuantityColorTo r q u e
4M2.5 x L4 BZN+NYLOK1 Silver3 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 48  Friday, June 22, 2007  5:43 PM 

Chapter 349
5.Detach the upper case from the lower case. 
Removing the LED Board      
1.Locate the LED board on the upper case underside.
2.Remove the screw securing the LED board.   
3.Peel off the LED board cable from the upper case, then grasp the LED board and pull the cable through its 
upper case opening.
4.Disconnect the LED board cable from its board connector.
StepTy p e QuantityColorTo r q u e
2M2 x L3 BZN+NYLOK1 Silver1.6 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 49  Friday, June 22, 2007...

50Chapter 3
Removing the Fingerprint and Touchpad Boards             
1.Disconnect the fingerprint board cable. 
2.Detach the fingerprint board cable from the upper case.
3.Disconnect the touchpad board cable. 
4.Detach the fingerprint board cable from the upper case.
Acer TM 4520 SG.book  Page 50  Friday, June 22, 2007  5:43 PM