Table of Contents
Chapter 1
Hardware Overview
1.1 Features ...................................................................................................................... 1-1
1.2
System Block Diagram .............................................................................................. 1-5
1.3
2.5-inch Hard Disk Drive......................................................................................... 1-10
1.4 Optical
Drive............................................................................................................ 1-15
1.5 Keyboard.................................................................................................................. 1-14
1.6
TFT Color Display................................................................................................... 1-15
1.7 Power
Supply ........................................................................................................... 1-17
1.8 Batteries ................................................................................................................... 1-20
1.9 AC
Adapter .............................................................................................................. 1-23
Chapter 2
Troubleshooting Procedures
2.1
Troubleshooting ......................................................................................................... 2-1
2.2
Troubleshooting Flowchart........................................................................................ 2-3
2.3
Power Supply Troubleshooting.................................................................................. 2-7
2.4
System Board Troubleshooting................................................................................ 2-17
2.5
USB FDD Troubleshooting ..................................................................................... 2-37
2.6
2.5” HDD Troubleshooting...................................................................................... 2-41
2.7
Keyboard Troubleshooting ...................................................................................... 2-46
2.8
Touch pad Troubleshooting ..................................................................................... 2-48
2.9
Display Troubleshooting.......................................................................................... 2-50
2.10 Optical Disk Drive Troubleshooting........................................................................ 2-53
2.11 Modem Troubleshooting.......................................................................................... 2-55
2.12 LAN Troubleshooting.............................................................................................. 2-57
2.13 Wireless LAN Troubleshooting............................................................................... 2-58
2.14 Bluetooth
Troubleshooting ...................................................................................... 2-61
2.15 Sound
Troubleshooting............................................................................................ 2-64
2.16 TV Tuner Troubleshooting ...................................................................................... 2-66
vi [CONFIDENTIAL]
QOSMIO G20 Maintenance Manual (960-511)
Summary of Contents for QOSMIO G20 Series
Page 10: ...x CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Page 11: ...Chapter 1 Hardware Overview CONFIDENTIAL ...
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Page 38: ...1 9 AC Adapter 1 Hardware Overview 1 24 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Page 39: ...Chapter 2 Troubleshooting Procedures CONFIDENTIAL ...
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Page 113: ...Chapter 3 Tests and Diagnostics CONFIDENTIAL ...
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Page 223: ...3 Tests and Diagnostics 3 32 SETUP QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL 3 105 ...
Page 236: ...3 32 SETUP 3 Tests and Diagnostics 3 118 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Page 237: ...Chapter 4 Replacement Procedures CONFIDENTIAL ...
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Page 331: ...Appendices CONFIDENTIAL ...
Page 332: ...App ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Page 347: ...Appendix A Handling the LCD Module A 6 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Page 354: ...Appendix B Board Layout B 4 SD board QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL B 7 ...
Page 412: ...Appendix G BIOS Rewrite Procedures G 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Page 416: ...Appendix I Reliability I 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...