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2.1 Troubleshooting 2 Troubleshooting Procedures
QOSMIO G50 Maintenance Manual (960-683) [CONFIDENTIAL] 2-1
2
2.1 Troubleshooting
Chapter 2 describes how to determine which Field Replaceable Unit (FRU) in the computer is
causing the computer to malfunction. (The “FRU” means the replaceable unit in the field.)
The FRUs covered are:
1. Power supply 8. Optical Disk Drive 15. FM tuner
2. System Board 9. Modem 16. Bridge Media slot
3. USB FDD 10. LAN 17. PCI ExpressCard slot
4. 2.5” HDD 11. Wireless LAN 18. Fingerprint Sensor
5. Keyboard 12. Bluetooth 19. Web camerta
6. Touch pad 13. Sound 20. Intel Turbo Memory
7. Display 14. PCI-E-Mini card slot3
The Test Program operations are described in Chapter 3. Detailed replacement procedures are
described in Chapter 4.
NOTE: Before replacing the system board, it is necessary to execute the subtest 03 DMI
Information save of the 3.4 Setting of the hardware configuration in Chapter 3.
After replacing the system board, it is necessary to execute the subtest 04 DMI
Information recovery and subtest 08 System configuration display of the 3.4
Setting of the hardware configuration in Chapter 3. Also update with the latest
EC/KBC as described in Appendix H “EC/KBC Rewrite Procedures”.
After replacing the LCD, update with the latest EC/KBC as described in Appendix
H “EC/KBC Rewrite Procedures” to set the SVP parameter.
The implement for the Diagnostics procedures is referred to Chapter 3. Also, following
implements are necessary:
1. Phillips screwdrivers (For replacement procedures)
2. Implements for debugging port check
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Toshiba MS-DOS system FD
RS-232C cross cable
Test board with debug port test cable
PC for displaying debug port test result