Acer Aspire 7540 Service Guide

							Chapter 353
8.Loosen the six screws securing the heatsink module in the order shown.
NOTE: For the UMA model, loosen the four screws securing the heatsink module in the order shown.l
9.Carefully lift up the heatsink module. 
UMA
4
3
2
1 
						

							54Chapter 3
Removing the CPU 
NOTE: Aspire 7736/7736Z/7336 Series uses the Intel® processor, while Aspire  7540 Series uses the AMD® 
processor. But the process in removing the CPU are the same for all the models.
1.See “Removing the SD Dummy Card” on page 44.
2.See “Removing the Battery Pack” on page 45.
3.See “Removing the Back Cover” on page 46.
4.See “Removing the Hard Disk Drive Module” on page 48.
5.See “Removing the Wireless LAN Card” on page 50.
6.See “Removing the DIMM Module” on page 51.
7.See “Removing the Heatsink Module” on page 52.
8.Using a flat screwdriver, turn the CPU socket latch counter-clockwise to release the CPU. 
9.Lift up carefully to remove the CPU.  
						

							Chapter 355
NOTE: When installing the CPU, make sure to install the CPU with Pin 1 at the corner as shown. 
Removing the Optical Drive Module
1.See “Removing the SD Dummy Card” on page 44.
2.See “Removing the Battery Pack” on page 45.
3.See “Removing the Back Cover” on page 46.
4.See “Removing the Hard Disk Drive Module” on page 48.
5.See “Removing the Wireless LAN Card” on page 50.
6.See “Removing the DIMM Module” on page 51.
7.See “Removing the Heatsink Module” on page 52.
8.See “Removing the CPU” on page 54.
9.Remove the one screw (C) securing the optical drive module to the system.   
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L6 (1) Black 3.0 kgf-cm 86.00E12.536 
						

							56Chapter 3
10.Slowly pull out the ODD module from the ODD drive bay.
11 .Remove the one screw (H) 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 
						

							Chapter 357
Main Unit Disassembly Process
Main Unit Disassembly Flowchart
Screw List
ItemScrewColorPart No.
A M2.5 x L4 Black 86.00H59.734
B M2 x L4 Silver 86.9A552.4R0
C M2.5 x L6 Black 86.00E12.536
G M2.5 x L3.5 Silver 86.9A536.3R5
H M2 x L3 Silver 86.9A552.3R0
MAIN UNIT
KEYBOARD
MAIN
BOARD Hx1
MAIN UNIT DISASSEMBLY
LCD MODULE
Dx4
UPPER CASE
Bx2, Cx4
MIDDLE COVER
FINGERPRINT
MODULE
Bx2
TOUCHPAD
MODULE
MICROPHONE
MODULE
Cx12, Ax5, Gx1
MODEM
CARD Fx1
LOWER CASE
USB
MODULE Ax1 
						

							58Chapter 3
Removing the Middle Cover
1.See “Removing the SD Dummy Card” on page 44.
2.See “Removing the Battery Pack” on page 45.
3.See “Removing the Back Cover” on page 46.
4.See “Removing the Hard Disk Drive Module” on page 48.
5.See “Removing the Wireless LAN Card” on page 50.
6.See “Removing the DIMM Module” on page 51.
7.See “Removing the Heatsink Module” on page 52.
8.See “Removing the CPU” on page 54.
9.See “Removing the Optical Drive Module” on page 55.
10.Remove the twelve (C) from the lower case.  
11 .Remove the five screws (A) from the lower case.  
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L6 (11) Black 3.0 kgf-cm 86.00E12.536
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L4 (5) Black 3.0 kgf-cm 86.00H59.734 
						

							Chapter 359
12.Remove the one screw (G) from the lower case.    
13.Turn the notebook over so the top is facing up. Open the LCD panel.
14.Carefully pry and lift the middle cover.   
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L3.5 (1) Silver 3.0 kgf-cm 86.9A536.3R5 
						

							60Chapter 3
Removing the Keyboard
1.See “Removing the SD Dummy Card” on page 44.
2.See “Removing the Battery Pack” on page 45.
3.See “Removing the Back Cover” on page 46.
4.See “Removing the Hard Disk Drive Module” on page 48.
5.See “Removing the Wireless LAN Card” on page 50.
6.See “Removing the DIMM Module” on page 51.
7.See “Removing the Heatsink Module” on page 52.
8.See “Removing the CPU” on page 54.
9.See “Removing the Optical Drive Module” on page 55.
10.See “Removing the Middle Cover” on page 58.
11 .Release the keyboard from the latches. 
12. Turn it over on the touchpad area.   
						

							Chapter 361
13. Release the latch (a) and disconnect the keyboard cable (b) from its connector on the main board and 
detach the keyboard.   
Removing the LCD Module
1.See “Removing the SD Dummy Card” on page 44.
2.See “Removing the Battery Pack” on page 45.
3.See “Removing the Back Cover” on page 46.
4.See “Removing the Hard Disk Drive Module” on page 48.
5.See “Removing the Wireless LAN Card” on page 50.
6.See “Removing the DIMM Module” on page 51.
7.See “Removing the Heatsink Module” on page 52.
8.See “Removing the CPU” on page 54.
9.See “Removing the Optical Drive Module” on page 55.
10.See “Removing the Middle Cover” on page 58.
11 .See “Removing the Keyboard” on page 60.
12.Release the  wireless antenna cables from the latches and carefully pull out the wireless antenna cables 
from the hole.. 
						

							62Chapter 3
13.Remove the LCD cable from its connector on the main board and release the cable from the latches. 
14.Remove the four screws (D) 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