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Acer Aspire 5940G Service Guide - Page 106

Removing the RTC Battery, connections shown.

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Removing the RTC Battery IMPORTANT: Follow local regulations for disposal of all batteries. 1. See "Removing the Mainboard" on page 95. 2. The RTC Battery is soldered to the Mainboard. To replace the battery, solder the new battery to the connections shown. 96 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
Rear View	17
Left View	17
Right View	18
Bottom View	19
TouchPad Basics (with fingerprint reader)	20
Using the Keyboard	21
Lock Keys and embedded numeric keypad	21
Windows Keys	22
Hot Keys	23
Special Key	24
Using the System Utilities	25
Acer GridVista (dual-display compatible)	25
Hardware Specifications and Configurations	26
System Utilities	33
BIOS Setup Utility	33
Navigating the BIOS Utility	33
Information	34
Main	35
Advanced	36
Security	38
Power	41
Boot	43
Exit	44
BIOS Flash Utilities	45
DOS Flash Utility	46
WinFlash Utility	48
Remove HDD/BIOS Password Utilities	49
Machine Disassembly and Replacement	55
Disassembly Requirements	55
General Information	56
Pre-disassembly Instructions	56
Disassembly Process	56
External Module Disassembly Process	57
External Modules Disassembly Flowchart	57
Removing the Battery Pack	58
Removing the Express Dummy Card	59
Removing the SD Dummy Card	60
Removing the Lower Covers	61
Removing the Optical Drive Module	62
Removing the Hard Disk Drive Module	64
Removing the DIMM Modules	66
Removing the WLAN Module	67
Main Unit Disassembly Process	69
Upper Cover Disassembly Flowchart	69
Lower Cover Disassembly Flowchart	70
Removing the Keyboard	71
Removing the Upper Cover	73
Removing the Media Board	76
Removing the Launch Board	78
Removing the Speaker Module	80
Removing the Power Saving Board	82
Removing the Volume Control Board	84
Removing the MIC Board	85
Removing the Button Board and Finger Print Reader	86
Removing the TouchPad Bracket	89
Removing the LCD Module	91
Removing the Saddles	97
Removing the USB Board	99
Removing the Subwoofer	100
Removing the Bluetooth Module	101
Removing the Card Reader Board	103
Removing the Hinge Wells	104
Removing the Mainboard	105
Removing the RTC Battery	106
Removing the VGA/MXM Card	107
Removing the Thermal Module	108
Removing the CPU	110
Main Module Reassembly Procedure	111
Replacing the CPU	111
Replacing the Thermal Module	112
Replacing the VGA/MXM Card	113
Replacing the Mainboard	114
Replacing the Hinge Wells	115
Replacing the Card Reader Board	115
Replacing the Bluetooth Module	116
Replacing the Subwoofer	117
Replacing the USB Board	117
Replacing the Saddles	118
Replacing the LCD Module	119
Replacing the TouchPad Bracket	120
Replacing the Button Board and Finger Print Reader	122
Replacing the MIC Board	125
Replacing the Volume Control Board	126
Replacing the Power Saving Board	127
Replacing the Speaker Module	129
Replacing the Launch Board	131
Replacing the Media Board	133
Replacing the Upper Cover	134
Replacing the Keyboard	138
Replacing the WLAN Module	139
Replacing the DIMM Modules	141
Replacing the Hard Disk Drive Module	141
Replacing the ODD Module	142
Replacing the Lower Covers	143
Replacing the SD Dummy Card	143
Replacing the PCI Express Dummy Card	144
Replacing the Battery	144
Troubleshooting	145
Common Problems	145
Power On Issue	146
No Display Issue	147
Random Loss of BIOS Settings	148
LCD Failure	149
Built-In Keyboard Failure	149
TouchPad Failure	150
Internal Speaker Failure	150
Internal Microphone Failure	152
HDD Not Operating Correctly	153
ODD Failure	154
Modem Function Failure	157
Wireless Function Failure	157
Thermal Unit Failure	158
External Mouse Failure	158
Other Failures	159
Intermittent Problems	160
Undetermined Problems	160
Post Codes	161
Chipset POST Codes	161
Jumper and Connector Locations	167
Top View	167
Bottom View	168
LS-5011P LCD Backlight Board	169
LS-5012P Launch Board	170
LS-5013P Media Board	171
LS-5014P VR Board	172
LS-5015P Finger printer Board	173
LS-5016P USB Board	174
LS-5017P IO Board	175
LS-5018P POWER SAVING Board	176
LS-5019P Touch pad button Board	177
Clearing Password Check and BIOS Recovery	178
Clearing Password Check	178
BIOS Recovery by Crisis Disk	179
FRU (Field Replaceable Unit) List	181
Aspire 5940G Series Exploded Diagrams	182
Main Assembly	182
Base Assembly	183
Aspire 5940G Series FRU List	184
Screw List	190
Model Definition and Configuration	192
Aspire 5940G Series	192
Test Compatible Components	215
Microsoft® Windows® 7 Environment Test	216
Online Support Information	229

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