Acer Aspire 4920 Service Guide

Chapter 381
19.Remove the two screws (A) holding the mainboard to the lower case. 
20.Carefully detach the mainboard from the lower case.
Removing the Modem Board 
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.See “Removing the DIMM” on page 56.
6.See “Removing the WLAN Board Module” on page 57.
7.See “Removing the Hard Disk Drive Module” on page 58.
8.See...

82Chapter 3
17.See “Removing the Mainboard” on page 79.
18.Disconnect the modem cable from the mainboard.
19.Detach the masking tape from the mainboard.
20.Remove the two screws (A) on the modem board. 
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2) Silver 1.6 kgf-cm
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Chapter 383
21.Detach the modem board from the mainboard. 
Removing the RTC Battery
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.See “Removing the DIMM” on page 56.
6.See “Removing the WLAN Board Module” on page 57.
7.See “Removing the Hard Disk Drive Module” on page 58.
8.See “Removing the Optical Drive Module” on page 59.
9.See “Removing the CPU Heatsink...

84Chapter 3
19.Carefully detach the RTC battery from the SD card slot.
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Chapter 385
LCD Module Disassembly Process
LCD Module Disassembly Flowchart
Main Screw List
ItemScrewPart No.
G M2.5 x L6  86.00E33.736
H M2 x L3 86.00C07.220
LCD MODULE
LCD BEZEL
LEFT HINGERIGHT HINGE
Gx6
Gx1 Gx1
LCD ASSEMBLY
LEFT LCD
BRACKETHx2RIGHT LCD
BRACKETHx2
INVERTER BOARD
LCD BACK PANEL
AUXILIARY
ANTENNAMICROPHONES
LCD MODULE DISASSEMBLY
LCD FPC
CABLE
MAIN
ANTENNA CAMERA BOARD
Gx2
Gx2
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86Chapter 3
Removing the LCD Bezel
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.See “Removing the DIMM” on page 56.
4.See “Removing the WLAN Board Module” on page 57.
5.See “Removing the Hard Disk Drive Module” on page 58.
6.See “Removing the Optical Drive Module” on page 59.
7.See “Removing the CPU Heatsink Module” on page 62.
8.See “Removing the CPU” on page 63.
9.See “Removing the Keyboard” on page 64.
10.See “Removing the Middle Cover” on page 65.
11...

Chapter 387
14. Carefully pry open the LCD bezel and remove the bezel from the LCD module. 
Removing the Camera Board
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.See “Removing the DIMM” on page 56.
4.See “Removing the WLAN Board Module” on page 57.
5.See “Removing the Hard Disk Drive Module” on page 58.
6.See “Removing the Optical Drive Module” on page 59.
7.See “Removing the CPU Heatsink Module” on page 62.
8.See “Removing the CPU” on page 63.
9.See...

88Chapter 3
14.Remove the camera board.
Removing the Inverter Board
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.See “Removing the DIMM” on page 56.
4.See “Removing the WLAN Board Module” on page 57.
5.See “Removing the Hard Disk Drive Module” on page 58.
6.See “Removing the Optical Drive Module” on page 59.
7.See “Removing the CPU Heatsink Module” on page 62.
8.See “Removing the CPU” on page 63.
9.See “Removing the Keyboard” on page 64.
10.See “Removing...

Chapter 389
14.Remove the screw (G) that holds the board to the panel. 
15.Turn the inverter board over.  
16.Disconnect the 2P cable from the inverter board, then disconnect the inverter board cable from its 
connector.
17.Remove the inverter board.
Removing the LCD with Brackets
1.See “Removing the Battery Pack” on page 53.
2.See “Removing the Lower Cover” on page 55.
3.See “Removing the DIMM” on page 56.
4.See “Removing the WLAN Board Module” on page 57.
5.See “Removing the Hard Disk Drive Module” on...

90Chapter 3
14.Remove the two screws (G) securing the left and right LCD brackets to the LCD back cover. 
15.Detach the LCD with the brackets from the back cover, then turn it over. 
16.Detach the acetic tapes holding the cables to the back panel.
StepSize (Quantity)ColorTo r q u e
1~2 M2.5 x L6 (2) Silver 2.5 kgf-cm 
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.POEBZ

.BZ





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