Acer Travelmate 4520 Service Guide

Chapter 351
5.Remove the screws securing the fingerprint board bracket.   
6.Detach the fingerprint board bracket from the upper case. 
7.Remove the screws securing the fingerprint board.   
StepTy p e QuantityColorTo r q u e
5M2 x L4 BZN+NYLOK4 Silver1.6 kgf-cm +/-15%
StepTy p e QuantityColorTo r q u e
7M2 x L4 BZN+NYLOK2 Silver1.6 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 51  Friday, June 22, 2007  5:43 PM 

52Chapter 3
8.Detach the fingerprint board from its bracket. 
9.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 Card Reader Board   
1.Remove the screws securing the card reader board to the system board.   
StepTy p e QuantityColorTo r q u e
1M2 x L3 BZN+NYLOK2 Silver1.6 kgf-cm +/-15% 
Acer TM 4520 SG.book  Page 52  Friday, June 22, 2007  5:43 PM 

Chapter 353
2.Detach the card reader board from its connector (CRB1). 
Removing the Bluetooth Board   
1.Disconnect the Bluetooth board cable from its system board connector (BLUE1). 
2.Detach the Bluetooth board from the left speaker.
Acer TM 4520 SG.book  Page 53  Friday, June 22, 2007  5:43 PM 

54Chapter 3
Removing the System Board   
1.Disconnect the speaker cable from its system board connector (SPKR1).
2.Remove the single screw securing the system board to the lower case.   
3.Detach the system board from the upper case, then turn it over to gain access to the modem board.
Proceed to the next section for instructions on how to remove the modem board.  
StepTy p e QuantityColorTo r q u e
2M2 x L4 BZN+NYLOK1 Silver1.6 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 54  Friday, June 22, 2007  5:43 PM 

Chapter 355
Removing the Modem Board     
1.Remove the screws securing the modem board. 
2.Remove the modem board from its system board connector (MDC1), then disconnect the modem cable 
from the board. 
Removing the Speakers     
1.Remove the screws securing the speakers. 
StepTy p e QuantityColorTo r q u e
1M2 x L3 BZN+NYLOK2 Silver1.6 kgf-cm +/-15%
StepTy p e QuantityColorTo r q u e
1M2 X L2 NI2 Silver1.6 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 55  Friday, June 22, 2007  5:43 PM 

56Chapter 3
2.Release the speaker cable from its lower case latches.
3.Remove the speakers from the lower case. 
Acer TM 4520 SG.book  Page 56  Friday, June 22, 2007  5:43 PM 

Chapter 357
LCD  Module Disassembly     
LCD Module Disassembly Flowchart  
ScrewTy p ePart Number
D M2 x L4 BZN+NYLOK 86.00E13.524
F M2 x L3 BZN+NYLOK 86.00E25.723
J M2.5 x L6 BZN+NYLOK 86.00E33.736
L M2.5 x L5 BZN+NYLOK 86.00F19.735
M M2.5 x L3 BZN+NYLOK 86.00D52.630
LC D module
LCD bez el
(Jx6)
LCD panel
(Lx4, Dx2)LCD chass is
LCD panel brackets
(Fx6)Inve r te r  b o a r d
LC D- C CD cable
LC D module hinge
(Lx2)
CCD board
Internal microphone
WLAN antennas
(Mx1)
Acer TM 4520 SG.book  Page 57  Friday,...

58Chapter 3
Removing the LCD Bezel        
1.Remove the rubber pads securing the LCD bezel screws.
2.Remove the screws securing the LCD bezel.
3.Carefully pry the LCD bezel open and remove it from the LCD module.
StepTy p e QuantityColorTo r q u e
2M2.5 x L6 BZN+NYLOK6Black3 kgf-cm +/-15% 
Acer TM 4520 SG.book  Page 58  Friday, June 22, 2007  5:43 PM 

Chapter 359
Removing the Inverter Board      
1.Remove the screws on the lower edge of the LCD panel. 
2.Turn the board over and disconnect the 2P cable. 
3.Disconnect the inverter cable from the board. 
StepTy p e QuantityColorTo r q u e
1M2 x L3 BZN+NYLOK3Black1.6 kgf-cm +/-15%
Acer TM 4520 SG.book  Page 59  Friday, June 22, 2007  5:43 PM 

60Chapter 3
Removing the LCD Module Hinges       
1.Remove the screws securing the LCD module hinges. 
2.Remove the LCD module hinges from the LCD chassis. 
Removing the LCD Panel      
1.Disconnect the CCD board cable. 
StepTy p e QuantityColorTo r q u e
1M2.5 x L5 BZN+NYLOK2Black3 kgf-cm +/-15% 
Acer TM 4520 SG.book  Page 60  Friday, June 22, 2007  5:43 PM