Acer Aspire 2420 Service Guide

Chapter 371
6.Remove the two screws (H) from the botton panel of the system and three screws (A) on the battery bay 
area. 
7.Turn over the system and open the LCD panel and gently pry up and remove the middle cover.  
StepSize (Quantity)ColorTo r q u e
1~2 M2.5 x L8 (2) Black 3.0 kgf-cm
3~5 M2 x L3 (3) Black 1.6 kgf-cm 

72Chapter 3
8.Carefully pry up the middle cap cover and remove it. 
9.Release the wireless antennas from the latches.
10.Disconnect the LCD cable from the main board. 

Chapter 373
11 .Remove the four screws (A) securing the left and right hinge caps. 
12.Remove the left and right hinge caps. 
StepSize (Quantity)ColorTo r q u e
1~4 M2 x L3 (4) Black 1.6 kgf-cm 

74Chapter 3
13.Remove the four screws (F) from the left and right hinge of the LCD module. 
14.Carefully remove the LCD module from the base unit. 
NOTE: When connecting the cable back to the unit, please note that the cable should be routed well.
Separating the Upper Case from the Lower Case
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...

Chapter 375
11 .See “Removing the Keyboard” on page 69.
12.See “Removing the LCD Module” on page 70.
13.Disconnect the Launch board cable from the CN1 on the main board.  
14.Disconnect the touchpad cable from the TOUCHPAD1 on the main board.  

76Chapter 3
15.Remove the nine screws (D) on the bottom panel. 
16.Gently raise the upper case from the main unit. 
StepSize (Quantity)ColorTo r q u e
1~9 M2 x L5 (9) Black 1.6 kgf-cm 

Chapter 377
Removing the Launch 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...

78Chapter 3
15.Remove the four screws (A) holding the launch board and remove the launch board from the upper cover.   
Removing theTouch Pad Board Module
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...

Chapter 379
13.See “Separating the Upper Case from the Lower Case” on page 74.
14.Disconnect the touch pad cable from the touch pad board.  
15.Carefully pry loose and remove the touch pad board. 
WARNING:The touchpad board is glued to the upper case, only remove the touchpad board if it is defective. 

80Chapter 3
Removing the main 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...