Troubleshooting - Toshiba TECRA A8 series Maintenance Manual

2.1 Troubleshooting

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2.1
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is
causing the computer to malfunction. The FRUs covered are:
1. Power Supply
2. System Board
3. USB Floppy Disk Drive 8. Modem
4. Hard Disk Drive
5. Keyboard/Touch pad
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
The implement for the Diagnostics procedures is referred to Chapter 3. Also, following
implements are necessary:
1. Phillips screwdrivers (For replacement procedures, Refer to Chapter 4)
2. Implements for debugging port check
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
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Troubleshooting
Information save of the 3.3 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 3.3
Setting of the hardware configuration in Chapter 3.
Also update with the latest EC/KBC as described in Appendix H "EC/KBC
Rewrite Procedures".
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Toshiba DOS system FD
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RS-232C cross cable
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Test board with debug port test cable
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PC for displaying debug port test result
manuals search engine
6. Display
7. Optical Drive
9. LAN
10. Bluetooth
2 Troubleshooting Procedures
11. Wireless LAN
12. Sound components
13. SD card Slot
14. Fingerprint sensor
[CONFIDENTIAL] 2-1