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Acer Aspire M5-481PT Acer Aspire M5-481T, PT, and TG Notebook Service Guide - Page 173

Keyboard Failure,

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Keyboard Failure 0 If the Keyboard fails, perform the following: Figure 1-4. Keyboard Failure 4-8 Troubleshooting

Section	Page
CHAPTER 1	9
Hardware Specifications	9
Features	11
Notebook Tour	18
Top View	18
Closed Rear View	20
Closed Front View	21
Left View	22
Right View	23
Touchpad Basics	24
Using the Keyboard	25
Windows Keys	26
Hotkeys	27
System Block Diagram	29
Specification Tables	30
CHAPTER 2	55
System Utilities	55
BIOS Setup Utility	57
Navigating the BIOS Utility	57
BIOS	58
Information	58
Main	60
Security	62
Boot	67
Exit	68
BIOS Flash Utilities	69
DOS Flash Utility	70
WinFlash Utility	72
Remove Password Utilities	74
Remove HDD Password	74
Removing BIOS Password	75
Miscellaneous Tools	77
Using DMI Tools	77
Using the LAN MAC EEPROM Utility	82
CHAPTER 3	83
Maintenance Procedures	83
Introduction	85
General Information	85
Recommended Equipment	85
Screw Table	85
Maintenance Flowchart	86
Machine Disassembly	87
Getting Started	87
ODD Module Removal	88
Lower Cover Removal	90
Keyboard Backlight Removal	92
Keyboard Removal	93
Touch Pad Bracket Removal	94
Audio Board Removal	96
Audio Board Removal	98
DIMM Removal	100
RTC Removal	101
Combo Module Removal	102
Solid State Disk Removal	104
MIC Removal	106
LCD Module Removal	107
Battery Pack Removal	109
Hard Disk Drive Removal	111
LCD Bezel Removal	114
Fan Thermal Assembly Removal	115
LCD Hinge Removal	117
LCD Bracket Removal	119
LCD Module Removal	120
LCD LVDS Removal	123
CCD Module Removal	124
Mainboard Removal	125
Antenna Removal	127
Speaker Modules Removal	128
Machine Assembly	129
ODD Module Installation	129
Lower Cover Installation	131
Keyboard Backlight Installation	133
Keyboard Installation	134
Touch Pad Bracket Installation	135
Audio Module Installation	136
Audio Board Installation	137
DIMM Installation	139
RTC Installation	140
Combo Module Installation	141
Solid State Disk (SSD) Installation	142
MIC Installation	144
Audio Board Installation	145
Battery Pack Installation	147
Hard Disk Drive Installation	149
Audio Board Installation	151
Fan Thermal Assembly Installation	152
Audio Board Installation	154
LCD Bracket Installation	155
LCD Panel Installation	156
LVDS Installation	158
CCD Installation	160
Mainboard Installation	161
Antenna Installation	163
Speaker Installation	164
CHAPTER 4	166
Troubleshooting	166
Introduction	168
General Information	168
Power On Issues	169
No Display Issues	170
LCD Failure	172
Keyboard Failure	173
Touchpad Failure	174
Internal Speaker Failure	175
Microphone Failure	177
Other Functions Failure	178
Intermittent Problems	179
Undetermined Problems	179
Post Codes	180
CHAPTER 5	188
Jumper and Connector Locations	188
Jumper and Connector Locations	190
CHAPTER 6	192
FRU (Field Replaceable Unit) List	192
Main Assembly	195
LCD Assembly	197
Screw List	205
CHAPTER 7	206
Model Definition and Configuration	206
M5-481T	208
M5-481TG	216
CHAPTER 8	234
Test Compatible Components	234
Acer M5 481/481G/481T/481TG	237
CHAPTER 9	244
Online Support Information	244

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