Acer Aspire 7540 Service Guide

							Chapter 373
17.Disconnect the bluetooth cable from its connector on the main board.   
18.Detach the bluetooth card.   
						

							74Chapter 3
Removing the Microphone 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.See “Removing the LCD Module” on page 61.
13.See “Separating the Upper Case from the Lower Case” on page 63.
14.See “Removing the Fingerprint/Button and Touchpad Boards” on page 66.
15.See “Removing the USB Board Module” on page 69.
16.See “Removing the Modem Board” on page 71.
17.See “Removing the Bluetooth Board” on page 72. 
18.Disconnect the microphone cable from its connector on the main board. 
19.Detach the microphone module.   
						

							Chapter 375
Removing the Main Board
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.See “Removing the LCD Module” on page 61.
13.See “Separating the Upper Case from the Lower Case” on page 63.
14.See “Removing the Fingerprint/Button and Touchpad Boards” on page 66.
15.See “Removing the USB Board Module” on page 69.
16.See “Removing the Modem Board” on page 71.
17.See “Removing the Bluetooth Board” on page 72. 
18.See “Removing the Microphone Module” on page 74.
19. Disconnect the right speaker cable from its connector on the main board.   
						

							76Chapter 3
20.Remove the one screw (H) securing the main board in place.    
 Note: RTC battery has been highlighted with the yellow circle as shown in the figure above.  Please 
detach the RTC battery and follow local regulations for disposal.
 Note: Circuit boards > 10cm
2 has been highlighted with the yellow square as shown in the figure 
above. Please detach the circuit boards and follow the local regulations for disposal.
21.Lift the main board gently and remove it carefully from the lower case..
Size (Quantity)ColorTo r q u ePart No.
M2 x L3 (1) Silver 1.6 kgf-cm 86.9A552.3R0 
						

							Chapter 377
 LCD Module Disassembly Process
LCD Module Disassembly Flowchart
Screw List
ItemScrewColorPart No.
E M2.5 x L5 (6) Black 86.00F87.735
H M2 x L3 Silver 86.9A552.3R0
LCD MODULE
LCD BEZEL
Ex6
LCD ASSEMBLY
LEFT LCD
BRACKETHx3RIGHT LCD
BRACKETLCD FPC
CABLE
LCD BACK PANEL
ANTENNAS
LCD MODULE DISASSEMBLY
WEB
CAMERA
LEFT HINGERIGHT HINGE Ex2Ex2
Hx3 
						

							78Chapter 3
Removing the LCD Bezel
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.See “Removing the LCD Module” on page 61.
13.Remove the six screw covers on the LCD bezel. 
14.Remove the six screws (E) on the LCD bezel. . 
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L5 (6) Black 3.0 kgf-cm 86.00F87.735 
						

							Chapter 379
15.Carefully pry open the LCD bezel and remove it from the LCD panel. 
Removing the LCD panel with the Brackets
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.See “Removing the LCD Module” on page 61.
13.See “Removing the LCD Bezel” on page 78. 
						

							80Chapter 3
14.Remove the four screws (E) on the left and right hinges as shown.  
15.Disconnect the web camera cable from its connector on the LCD bezel.
16.Remove the LCD panel with brackets from the LCD bezel. 
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L5 (4) Black 3.0 kgf-cm 86.00F87.735 
						

							Chapter 381
Removing the LCD Brackets
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.See “Removing the LCD Module” on page 61.
13.See “Removing the LCD Bezel” on page 78.
14.See “Removing the LCD panel with the Brackets” on page 79.
15.Remove the six screws (H) securing the left and right LCD brackets to remove the brackets. 
Removing the Web Camera
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.
Size (Quantity)ColorTo r q u ePart No.
M2 x L3 (6) Silver 86.9A552.3R0 
						

							82Chapter 3
11 .See “Removing the Keyboard” on page 60.
12.See “Removing the LCD Module” on page 61.
13.See “Removing the LCD Bezel” on page 78.
14.See “Removing the LCD panel with the Brackets” on page 79.
15.Pry to remove the web camera module from the LCD bezel. 
WARNING:  The web camera module is glued to the LCD module back cover, only remove the  web camera 
module if it is defective.
Removing the FPC Cable
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.See “Removing the LCD Module” on page 61.
13.See “Removing the LCD Bezel” on page 78.
14.See “Removing the LCD panel with the Brackets” on page 79.