Acer Aspire 2420 Service Guide

							Chapter 381
15.Remove the two screws (F) holding the main board. 
16.Carefully remove the main board.  
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2) Black 1.6 kgf-cm 
						

							82Chapter 3
Removing the Speaker Modules
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the DIMM” on page 59.
6.See “Removing the WLAN Board Modules” on page 60.
7.See “Removing the Hard Disk Drive Module” on page 61.
8.See “Removing the Optical Drive Module” on page 63.
9.See “Removing the CPU and VGA Heatsink Module” on page 65.
10.See “Removing the CPU” on page 67.
11 .See “Removing the Keyboard” on page 69.
12.See “Removing the LCD Module” on page 70.
13.See “Separating the Upper Case from the Lower Case” on page 74.
14.See “Removing the main board” on page 80.
15.Remove the four screws holding the left and right speakers.    
StepSize (Quantity)ColorTo r q u e
1~4 M2 x L4 (4) Silver 1.6 kgf-cm 
						

							Chapter 383
16.Remove the left and right speakers from the upper case. 
Removing the Modem Board 
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the DIMM” on page 59.
6.See “Removing the WLAN Board Modules” on page 60.
7.See “Removing the Hard Disk Drive Module” on page 61.
8.See “Removing the Optical Drive Module” on page 63.
9.See “Removing the CPU and VGA Heatsink Module” on page 65.
10.See “Removing the CPU” on page 67.
11 .See “Removing the Keyboard” on page 69.
12.See “Removing the LCD Module” on page 70.
13.See “Separating the Upper Case from the Lower Case” on page 74.
14.See “Removing the main board” on page 80. 
						

							84Chapter 3
15.Remove the 2 screws securing the modem card. 
16.Disconnect the cable from the modem board. 
17.Remove the modem board from the main board. 
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2) Silver 1.8 kgf-cm 
						

							Chapter 385
Removing the Bluetooth board
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the DIMM” on page 59.
6.See “Removing the WLAN Board Modules” on page 60.
7.See “Removing the Hard Disk Drive Module” on page 61.
8.See “Removing the Optical Drive Module” on page 63.
9.See “Removing the CPU and VGA Heatsink Module” on page 65.
10.See “Removing the CPU” on page 67.
11 .See “Removing the Keyboard” on page 69.
12.See “Removing the LCD Module” on page 70.
13.See “Separating the Upper Case from the Lower Case” on page 74.
14.See “Removing the main board” on page 80.
15.Detach the Bluetooth cable from the main board. 
16.Carefully pry loose the Bluetooth module from the main board.
WARNING:The Bluetooth board is glued to the main board, only remove the Bluetooth board if it is defective. 
						

							86Chapter 3
 LCD Module Disassembly Process
LCD Module Disassembly Flowchart
Screw List
ItemScrewColorPart No.
E M2.5 x L5 Black 86.00F87.735
G M2 x L3 Silver 86.9A552.3R0
I M2.5 x L4 Silver 86.00E41.134
LCD MODULE
LCD BEZEL
Ex6
LCD ASSEMBLY
LEFT LCD
BRACKETGx2RIGHT LCD
BRACKETGx2LCD FPC
CABLE
INVERTER BOARD
LCD BACK PANEL
ANTENNAS
LCD MODULE DISASSEMBLY
Ix2
Ix2
VGA
CAMERAINTERNAL
MICROPHONE 
						

							Chapter 387
Removing the LCD Bezel
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the WLAN Board Modules” on page 60.
6.See “Removing the Keyboard” on page 69.
7.See “Removing the LCD Module” on page 70.
8.Remove the four upper and the two lower bezel screw caps. 
9.Remove the six screws (E) on the LCD module in the order as shown. 
StepSize (Quantity)ColorTo r q u e
1~6 M2.5 x L5 (6) Black 3.0 kgf-cm 
						

							88Chapter 3
10. Carefully pry open the LCD bezel and remove the bezel from the LCD module.  
Removing the LCD module with the Brackets
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56. 
						

							Chapter 389
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the WLAN Board Modules” on page 60.
6.See “Removing the Keyboard” on page 69.
7.See “Removing the LCD Module” on page 70.
8.See “Removing the LCD Bezel” on page 87.
9.Disconnect the cables from the microphone board and camera board.  
						

							90Chapter 3
10.Remove the four screws (I) securing the LCD module and the Inverter panel. 
11 .Detach the LCD with the brackets from the back cover. 
Removing the Inverter Board and FPC Cable
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the WLAN Board Modules” on page 60.
6.See “Removing the Keyboard” on page 69.
7.See “Removing the LCD Module” on page 70.
8.See “Removing the LCD Bezel” on page 87.
9.See “Removing the LCD module with the Brackets” on page 88.
StepSize (Quantity)ColorTo r q u e
1~4 M2.5 x L4 (4) Silver 3.0 kgf-cm