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Acer Aspire 4540 Acer Aspire 4540 Series Service Guide - Page 82

Removing the TouchPad Bracket

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Removing the TouchPad Bracket IMPORTANT: The TouchPad is supplied as part of the Upper Cover. If the TouchPad is defective, replace the entire Upper Cover. 1. See "Removing the Upper Cover" on page 67. 2. Open the FFC locking latch as shown and remove the FFC. 3. Lift the FFC away from the Upper Cover to detach the adhesive securing it in place. 4. Remove the adhesive strip from the TouchPad Bracket. 72 Chapter 3

Section	Page
System Specifications	11
Features	11
System Block Diagram	14
Your Acer Notebook tour	15
Front View	15
Closed Front View	16
Left View	17
Right View	18
Rear View	18
Bottom View	19
Easy-Launch Buttons	19
Touchpad Basics (with fingerprint reader)	20
Using the Keyboard	21
Lock Keys and embedded numeric keypad	21
Windows Keys	22
Special Key	23
Using the System Utilities	23
Acer GridVista (dual-display compatible)	24
Hardware Specifications and Configurations	25
System Utilities	33
BIOS Setup Utility	33
Navigating the BIOS Utility	33
Information	34
Main	35
Security	36
Boot	39
Exit	40
BIOS Flash Utilities	41
DOS Flash Utility	42
WinFlash Utility	44
Remove HDD/BIOS Password Utilities	46
Miscellaneous Utilities	48
Machine Disassembly and Replacement	51
Disassembly Requirements	51
General Information	52
Pre-disassembly Instructions	52
Disassembly Process	52
External Module Disassembly Process	53
External Modules Disassembly Flowchart	53
Removing the Battery Pack	54
Removing the SD Dummy Card	55
Removing the Lower Covers	56
Removing the WLAN Module	58
Removing the DIMM Modules	60
Removing the Hard Disk Drive Module	61
Removing the Optical Disk Drive Module	63
Main Unit Disassembly Process	65
Main Unit Disassembly Flowchart	65
Removing the Hinge Covers	66
Removing the Switch Cover	67
Removing the Keyboard	69
Removing the Speaker Module	70
Removing the LCD Module	72
Removing the Upper Cover	77
Removing the Finger Print Reader	80
Removing the TouchPad Bracket	82
Removing the RTC Battery	84
Removing the Bluetooth Module	85
Removing the USB Board	87
Removing the Modem Module	88
Removing the Mainboard	90
Removing the RJ-11 Port	91
Removing the Thermal Module	93
Removing the CPU	95
LCD Module Disassembly Process	96
LCD Module Disassembly Flowchart	96
Removing the LCD Bezel	97
Removing the Camera Module	99
Removing the LCD Panel	100
Removing the LCD Brackets and FPC Cable	102
Removing the Antennas	103
Removing the MIC Module	104
LCD Module Reassembly Procedure	105
Replacing the MIC Module	105
Replacing the Antennas	105
Replacing the LCD Panel	108
Replacing the Camera Module	110
Replacing the LCD Bezel	111
Main Module Reassembly Procedure	112
Replacing the CPU	112
Replacing the Thermal Module	113
Replacing the RJ-11 Port	115
Replacing the Mainboard	116
Removing the RTC Battery	118
Replacing the USB Board	118
Replacing the Bluetooth Board	119
Replacing the Modem Module	121
Replacing the TouchPad Bracket	122
Replacing the Finger Print Reader	124
Replacing the Upper Cover	126
Replacing the LCD Module	129
Replacing the Speaker Module	133
Replacing the Keyboard	134
Replacing the Switch Cover	136
Replacing the Hinge Covers	138
External Module Reassembly Process	139
Replacing the ODD Module	139
Replacing the Hard Disk Drive Module	140
Replacing the DIMM Modules	142
Replacing the WLAN Module	142
Replacing the Lower Covers	144
Replacing the SD Dummy Card	144
Replacing the Battery	145
Troubleshooting	147
Common Problems	147
Power On Issue	148
No Display Issue	149
Random Loss of BIOS Settings	150
LCD Failure	151
Built-In Keyboard Failure	151
Touchpad Failure	152
Internal Speaker Failure	152
Internal Microphone Failure	154
HDD Not Operating Correctly	155
ODD Failure	156
USB Failure (Rightside)	159
Modem Function Failure	159
Wireless Function Failure	160
Bluetooth Function Failure	160
EasyTouch Button Failure	161
Media Board Failure	161
Fingerprint Reader Failure	162
Thermal Unit Failure	162
External Mouse Failure	163
Other Failures	163
Intermittent Problems	164
Undetermined Problems	164
POST Codes Tables	165
Sec:	165
Memory:	165
BDS & Specific action:	166
Each PEIM entry point used in 80_PORT	167
Each Driver entry point used in 80_PORT	167
Each SmmDriver entry point used in 80_PORT	170
Jumper and Connector Locations	171
Top View	171
Bottom View	172
LS-4494P Fingerprint Board	173
LS-4495P USB Board	173
Clearing Password Check and BIOS Recovery	173
Clearing Password Check	174
BIOS Recovery by Crisis Disk	175
FRU (Field Replaceable Unit) List	177
Aspire 4540/4240 Exploded Diagrams	178
Main Module	178
Base	179
Aspire 4540/4240 FRU List	180
Screw List	188
Model Definition and Configuration	190
Aspire 4540/4240 Series	190
Test Compatible Components	209
Microsoft® Windows® 7 Environment Test	210
Online Support Information	221

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