No Display Issue 115
Random Loss of BIOS Settings 116
LCD Failure 117
TouchPad Failure 118
Internal Speaker Failure 118
HDD Not Operating Correctly 120
ODD Failure 121
Wireless Function Failure 124
Thermal Unit Failure 124
External Mouse Failure 125
Other Failures 125
Intermittent Problems 126
Undetermined Problems 126
Post Codes 127
Jumper and Connector Locations 133
Top View 133 Bottom View 134
Clearing Password Check and BIOS Recovery 135 Clearing Password Check 135
BIOS Recovery by Crisis Disk 136
FRU (Field Replaceable Unit) List 137
Acer Aspire 4820T Exploded Diagrams 138
LCD Assembly 138
Acer Aspire 4820T FRU List 141
Screw List 149
Model Definition and Configuration 150
Acer Aspire 4820T Series 150
Test Compatible Components 213
Microsoft® Windows® 7 Environment Test 214
Online Support Information 215
Index 217
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