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2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-28 PORTEGE A100 Maintenance Manual (960-460)
Procedure 3 Diagnostic Test Program Execution Check
Execute the following tests from the Diagnostic Test Menu. These tests check the system
board and I/O unit. Refer to Chapter 3, Tests and Diagnostic, for more information on how to
perform these tests.
1. System test
2. Memory test
3. Keyboard test
4. Display test
5. USB Floppy Disk test
6. Hard Disk test
7. Real Timer test
8. NDP test
9. Expansion test
10. CD-ROM/DVD-ROM
11. Wireless LAN test
12. Sound/LAN/Modem test
13. IEEE 1394
14. Bluetooth test
If an error is detected during these tests, go to Procedure 4.
Procedure 4 Replacement Check
I/O units or the system board may be damaged. Replace the I/O units or disassemble the
computer following the steps described in Chapter 4 and replace the system board with a new
one.