Acer Aspire 7540 Service Guide

							Chapter 343
External Module Disassembly Process
External Modules Disassembly Flowchart
The flowchart below gives you a graphic representation on the entire disassembly sequence and instructs you 
on the components that need to be removed during servicing. For example, if you want to remove the main 
board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
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
F M3 x L4 Silver 86.9A554.4R0
G M2.5 x L3.5 Silver 86.9A536.3R5
H M2 x L3 Silver 86.9A552.3R0
EXTERNAL MODULE DISASSEMBLY
WLAN
BOARD TURN OFF POWER
AND PERIPHERALS
UNPLUG POWER
CABLES
Bx1
BACK
COVER
Screwx6
DIMM
MODULES
REMOVE BATTERY
PA C K
SD DUMMY CARD
Hx1
ODD
MODULE
OPTICAL DISK
DRIVEOPTICAL
LOCKER
BRACKET
CPU Fx2
HDD
MODULE
HARD DISK
BRACKETHARD DISK
DRIVE Ax1
THERMAL
MODULE
Cx4
Cx1 
						

							44Chapter 3
Removing the SD Dummy Card
1.Push the SD dummy card all the way in to eject it.
2.Pull it out from the slot.  
						

							Chapter 345
Removing the Battery Pack
1.See “Removing the SD Dummy Card” on page 44.
2.Turn the notebook over so the bottom is facing up. 
3.Slide the battery lock/unlock latch to the unlock position. 
 Note: Battery has been highlighted with the yellow circle as above image shows. Please detach the 
battery and follow local regulations for disposal.
4.Slide the battery release latch to the release position (a) to pop out the battery pack, then remove the 
battery pack from the main unit (b).  
						

							46Chapter 3
Removing the Back Cover
1.See “Removing the SD Dummy Card” on page 44.
2.See “Removing the Battery Pack” on page 45.
3.Remove the four screws (C) on the back cover.
4.Remove the four captive screws on the back cover.
Size (Quantity)ColorTo r q u ePart No. 
M2.5 x L6 (4) Black 3.0 kgf-cm 86.00E12.536 
						

							Chapter 347
5.Use a plastic screw driver to carefully pry open the back cover. 
6.Carefully lift and remove the back cover. 
						

							48Chapter 3
Removing the Hard Disk 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.Remove the one screw (A) securing the hard disk drive module to the system.    
5.Pull the plastic tab in the direction indicated by the arrow to disengage the HDD module from the 
connector.   
Size (Quantity)ColorTo r q u ePart No. 
M2.5 x L4 (1) Black 3.0 kgf-cm 86.00H59.734 
						

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6.Lift the HDD module and remove it from the HDD bay.  
NOTE: To prevent damage to device, avoid pressing down on it or placing heavy objects on top of it. 
7.Remove the two screws (F) securing the hard disk to the bracket and remove the hard disk from the 
bracket.         
Size (Quantity)ColorTo r q u ePart No.
M3 x L4 (2) Silver 3.0 kgf-cm 86.9A554.4R0 
						

							50Chapter 3
Removing the Wireless LAN Card
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.For 2-antenna WLAN card, detach the black cable from connector 1 and the white cable from connector 2 
on the WLAN card.     
6.Remove the one screw (B) on the WLAN card and detach the card.  
Size (Quantity)ColorTo r q u ePart No.
M2 x L4 (1) Silver 1.6 kgf-cm 86.9A552.4R0 
						

							Chapter 351
7.Release the wireless LAN card from its connector and detach the card. 
Removing the DIMM 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.Push out the latches on both sides of the DIMM sockets to release the DIMMs. 
7.Remove the DIMM module(s).  
						

							52Chapter 3
Removing the Heatsink Module
NOTE: There are two version of heatsink module. For this section, we are going to use the Discrete model. 
The UMA version looks like the picture below:
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.Disconnect the fan cable connector from its connector on the main board.  
Fan Cable