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Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer QOSMIO G20.
NOTE:
Each model of QOSMIO G20 has a different configuration. For each model’s
configuration, refer to the parts list dedicated to it.
The procedures described in this manual are intended to help service technicians isolate
faulty Field Replaceable Units (FRUs) and replace them in the field.
SAFETY PRECAUTIONS
Four types of messages are used in this manual to bring important information to your
attention. Each of these messages will be italicized and identified as shown below.
DANGER:
“Danger” indicates the existence of a hazard that could result in death or
serious bodily injury, if the safety instruction is not observed.
WARNING:
“Warning” indicates the existence of a hazard that could result in bodily
injury, if the safety instruction is not observed.
CAUTION:
“Caution” indicates the existence of a hazard that could result in property
damage, if the safety instruction is not observed.
NOTE:
“Note” contains general information that relates to your safe maintenance
service.
Improper repair of the computer may result in safety hazards. Toshiba requires service
technicians and authorized dealers or service providers to ensure the following safety
precautions are adhered to strictly.
Be sure to fasten screws securely with the right screwdriver. Be sure to use the PH
Point size “0” and “1” screwdrivers complying with the ISO/DIS 8764-1:1996. If a
screw is not fully fastened, it could come loose, creating a danger of a short circuit,
which could cause overheating, smoke or fire.
If you replace the battery pack or RTC battery, be sure to use only the same model
battery or an equivalent battery recommended by Toshiba. Installation of the wrong
battery can cause the battery to explode.
QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL]
iii
Содержание QOSMIO G20 Series
Страница 10: ...x CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 11: ...Chapter 1 Hardware Overview CONFIDENTIAL ...
Страница 12: ...1 Hardware Overview 1 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 38: ...1 9 AC Adapter 1 Hardware Overview 1 24 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 39: ...Chapter 2 Troubleshooting Procedures CONFIDENTIAL ...
Страница 40: ...2 2 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 44: ...2 vi CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 113: ...Chapter 3 Tests and Diagnostics CONFIDENTIAL ...
Страница 114: ...3 Tests and Diagnostics 3 3 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 223: ...3 Tests and Diagnostics 3 32 SETUP QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL 3 105 ...
Страница 236: ...3 32 SETUP 3 Tests and Diagnostics 3 118 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 237: ...Chapter 4 Replacement Procedures CONFIDENTIAL ...
Страница 238: ...4 Replacement Procedures 4 4 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 331: ...Appendices CONFIDENTIAL ...
Страница 332: ...App ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 347: ...Appendix A Handling the LCD Module A 6 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 354: ...Appendix B Board Layout B 4 SD board QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL B 7 ...
Страница 360: ...Appendix B Board Layout B 9 TV antenna board QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL B 13 ...
Страница 408: ...E 2 United Kingdom UK Keyboard Appendix E Key Layout E 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 410: ...F 2 LAN loopback Connector Appendix F Wiring Diagrams F 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 412: ...Appendix G BIOS Rewrite Procedures G 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 416: ...Appendix I Reliability I 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...