Acer Aspire 5740 Service Guide

Chapter 343
Removing the WLAN Modules
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.See “Removing the Back Cover” on page 39.
5.See “Removing the Hard Disk Drive Module” on page 40.
6.Disconnect the black antenna cable from connector #1 and the white antenna cable from connector #2 on 
the short wireless board module. 
7.Remove the one screw (F) securing the short wireless board module to the system.  
8.Detach...

44Chapter 3
NOTE:  When attaching the antenna back to the WLAN board, make sure the cable are arranged properly. 
Removing the Optical Drive Module
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.See “Removing the Back Cover” on page 39.
5.See “Removing the Hard Disk Drive Module” on page 40.
6.See “Removing the WLAN Modules” on page 43.
7.Use a screw driver to push out the locker bracket of the optical drive...

Chapter 345
8.Remove the one screw (C) securing the locker bracket and remove the locker bracket from the optical 
disk drive module.  
Size (Quantity)ColorTo r q u ePart No.
M2 x L3 (1) Silver 1.6 kgf-cm 86.9A552.3R0 

46Chapter 3
Main Unit Disassembly Process
Main Unit Disassembly Flowchart
Screw List
ItemScrewColorPart No.
A M2.5 x L8 Black 86.00E34.738
E M2 x L4 Black 86.00E13.524
F M2 x L4 Silver 86.9A552.4R0
G M2.5 x L10 Silver 86.1A553.100
MAIN UNIT
KEYBOARD
MAIN
BOARD Fx1
MAIN UNIT DISASSEMBLY
LCD MODULE
Ax2
UPPER CASE
Ax 10
HEATSINK
MODULE
CPU
S C R E W X 6Fx1
LEFT
SPEAKER
MODULE
MIDDLE COVER
TOUCHPAD
BUTTON
MODULETOUCHPAD
MODULE
USB
MODULE
VOLUME BUTTON
BOARD
F x 1
MODEM
CARDEx2
Gx2
F x 3
Fx1
BLUETOOTH...

Chapter 347
Removing the Middle Cover
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.See “Removing the Back Cover” on page 39.
5.See “Removing the Hard Disk Drive Module” on page 40.
6.See “Removing the WLAN Modules” on page 43.
7.See “Removing the Optical Drive Module” on page 44.
8.Use a plastic screw driver to pry loose the side of the middle cover. 
9.Carefully pry loose the middle cover from the latches...

48Chapter 3
10.Detach the cable from the volume button board on the middle cover.    
11 .Remove the one screw (F) from the volume button board and release the volume button board from the 
latch.       
Size (Quantity)ColorTo r q u ePart No.
M2 x L4 (1) Silver 1.6 kgf-cm 86.9A552.4R0 

Chapter 349
12.Detach the volume button board from the middle cover.
Removing the Keyboard
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.See “Removing the Back Cover” on page 39.
5.See “Removing the Hard Disk Drive Module” on page 40.
6.See “Removing the WLAN Modules” on page 43.
7.See “Removing the Optical Drive Module” on page 44.
8.See “Removing the Middle Cover” on page 47.
9.Release the keyboard from the...

50Chapter 3
10.Disconnect the keyboard cable from the main board and detach the keyboard.   
Removing the LCD Module
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.See “Removing the Back Cover” on page 39.
5.See “Removing the Hard Disk Drive Module” on page 40.
6.See “Removing the WLAN Modules” on page 43.
7.See “Removing the Optical Drive Module” on page 44.
8.See “Removing the Middle Cover” on page 47.
9.See...

Chapter 351
10.Release the cables from the latches. 
11 .Carefully pull out the wireless antenna cables from the hole(s). 
12.Release the cables from the latches. 

52Chapter 3
13.Turn over the system and remove the two screws (A) from the bottom of the left and right hinges. 
14.Detach the LCD cable from the connector on the main board.
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L8 (2) Black 3.0 kgf-cm 86.00E34.738