Acer Aspire 7740g Service Guide

Chapter 355
4.Release the latch and disconnect the keyboard cable from its connector on the main board and detach the 
keyboard.   
Removing the LCD Module
1.See “Removing the Battery Pack” on page 40.
2.See “Removing the Back Cover” on page 42.
3.See “Removing the Wireless LAN Card” on page 44.
4.See “Removing the Middle Cover” on page 53.
5.See “Removing the Keyboard” on page 53.
6.Remove the two screws (A) the LCD hinges from the bottom panel. 
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L6 (3)...

56Chapter 3
7.Turn the system over and disconnect the LCD cable from the LCD1 connector on the main board and 
release the LCD cable from the latches. 
8.Carefully pull out the wireless antenna cables from the hole and release the cables from the latches.  

Chapter 357
9.Remove the four screws (B) from the left and right hinges.
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L10 (4) Black 3.0 kgf-cm 86.00F84.73A 

58Chapter 3
10.Carefully remove the LCD module from the base unit. 
NOTE: When connecting the cables back to the unit, please note that the cables should be routed well.
Separating the Upper Case from the Lower Case  
1.See “Removing the Battery Pack” on page 40.
2.See “Removing the Optical Drive Module” on page 41.
3.See “Removing the Back Cover” on page 42.
4.See “Removing the Hard Disk Drive Module” on page 43.
5.See “Removing the Wireless LAN Card” on page 44.
6.See “Removing the DIMM Module” on page...

Chapter 359
12.Disconnect the left speaker cable from SPKR_L1 on the main board. 
13.Release the latch  and disconnect the touchpad cable TPCN1 connector on the main board. 

60Chapter 3
14.  Release the latch and disconnect the touchpad button cable from FPCN1 connector on the main board.
15.Remove the fifteen screws (12 x A, 2 x C, 1 x D) from the bottom panel.     
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L6 (12) Black 3.0 kgf-cm 86.00E12.536 
M2.5 x L4 (2) Black 3.0 kgf-cm 86.00H59.734
M2.5 x L3.5 (1) Silver 3.0 kgf-cm 86.9A563.3R5 

Chapter 361
16.Remove the six screws (4 x A, 2 xF) securing the the upper case to the system.    
17.Gently lift and detach the upper case from the lower case.
Removing the Touchpad and Button Boards
1.See “Removing the Battery Pack” on page 40.
2.See “Removing the Optical Drive Module” on page 41.
3.See “Removing the Back Cover” on page 42.
4.See “Removing the Hard Disk Drive Module” on page 43.
5.See “Removing the Wireless LAN Card” on page 44.
6.See “Removing the DIMM Module” on page 46.
7.See...

62Chapter 3
8.See “Removing the CPU” on page 51.
9.See “Removing the Middle Cover” on page 53.
10.See “Removing the Keyboard” on page 53.
11 .See “Removing the LCD Module” on page 55.
12.See “Separating the Upper Case from the Lower Case” on page 58.
13.Release the latch and disconnect the touchpad button board cable from the connector.
14.Remove the tape securing the cables in place. 

Chapter 363
15.The cables are tape to the uppercase, carefully peel off the cables.
16.Release the latch and disconnect the touchpad cable from the connector. 

64Chapter 3
17.Release from the latches and remove the two screws (F) securing the touchpad and touchpad button 
bracket to the upper case. 
18.Release from the latches and detach the touchpad and button board bracket.
Size (Quantity)ColorTo r q u ePart No.
M2 x L4 (2) Silver 1.6 kgf-cm 86.9A552.4R0