Troubleshooting - Toshiba QOSMIO G50 Maintenance Manual

2.1 Troubleshooting

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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
2. System Board
3. USB FDD
4. 2.5" HDD
5. Keyboard
6. Touch pad
7. Display
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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8. Optical Disk Drive
9. Modem
10. LAN
11. Wireless LAN
12. Bluetooth
13. Sound
14. PCI-E-Mini card slot3
Toshiba MS-DOS system FD
RS-232C cross cable
Test board with debug port test cable
PC for displaying debug port test result
2 Troubleshooting Procedures
15. FM tuner
16. Bridge Media slot
17. PCI ExpressCard slot
18. Fingerprint Sensor
19. Web camerta
20. Intel Turbo Memory
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