Acer Aspire 4920 4920G User Manual

Chapter 351
Disassembly Process
The disassembly process is divided into the following stages:
TExternal module disassembly
TMain unit disassembly
TLCD module disassembly
The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence. 
Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you 
want to remove the mainboard, you must first remove the keyboard, then disassemble the inside assembly 
frame in that order....

52Chapter 3
External Module Disassembly Process
External Modules Disassembly Flowchart
The flowchart below 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 
mainboard, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
Screw List
ItemScrewPart No.
A M2 x L4 86.00F24.724
B M3 x L4 86.9A554.4R0
C M2 x L6 86.00F58.726
D M2 x...

Chapter 353
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). 
4.Remove the battery from the main unit (3).
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54Chapter 3
Removing the SD Dummy Card
1.See “Removing the Battery Pack” on page 53.
2.Push against the card, as if you were pushing it further into the slot, letting the card spring out.  
3.Remove the card from the slot. 
Removing the Express Dummy Card
1.See “Removing the Battery Pack” on page 53.
2.Push against the card,as if you were pushing it further into the slot, letting the card spring out.  
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Chapter 355
3.Remove the card  from the slot.
Removing the Lower Cover
1.See “Removing the Battery Pack” on page 53.
2.Turn the base unit over, then loosen the eight screws (A) on the lower cover.   
3.Use a plastic flat-blade screwdriver to pry open the lower cover. 
StepSize (Quantity)ColorTo r q u e
1~8 M2 x L4 Black 1.6 kgf-cm
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56Chapter 3
4.Remove the lower cover from the lower case. 
Removing the DIMM 
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.Push out the latches on both sides of the DIMM socket to release the DIMM. 
4.Remove the DIMM module. 
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Chapter 357
Removing the WLAN Board Module
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.Detach the wireless board barcode label from the WLAN board.  
4.Disconnect the two antenna cables from the WLAN board, then move the antennas away from the board. 
5.Remove the two screws (A) on the WLAN board to release the WLAN board.   
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2) Black 1.6 kgf-cm
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58Chapter 3
6.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 53.
2.See “Removing the SD Dummy Card” on page 54.
3.See “Removing the Express Dummy Card” on page 54.
4.See “Removing the Lower Cover” on page 55.
5.Remove the screw (A) securing the HDD assembly to the unit.    
6.Pull the HDD module out by pulling on the mylar...

Chapter 359
7.Remove the two screws (A) on the HDD bracket.  
8.Remove the hard disk drive. 
Removing the Optical Drive Module
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.Remove the screw (C) on the bottom side of the unit, as shown. 
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2) Silver 3.0 kgf-cm
StepSize (Quantity)ColorTo r q u e
1 M2 x L6 (1) Black 3 kgf-cm
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60Chapter 3
4.Using the flat-blade screwdriver, press the end of the module forward, then slide out the optical drive 
module from the main unit.   
5.Remove the two screws (D) 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
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