Toshiba A200 Personal Computer User Manual

2.4 System Board Troubleshooting 2 Troubleshooting Procedures
PORTEGE A200 Maintenance Manual (960-499) 2-27
Procedure 3 Diagnostic Test Program Execution Check
Execute the following tests form Diagnostic Program. 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. Floppy Disk test
6. Hard Disk test
7. Real Timer test
8. NDP test
9. Expansion test
10. CD-ROM/DVD-ROM test
11. Wireless LAN test
12. Sound test
13. LAN/Modem/Bluetooth/IEEE1394 test
If an error is detected during these tests, go to Procedure 4.
Procedure 4 Replacement Check
The system board connectors may be disconnected. Disassemble the computer following the
steps described in Chapter 4, Replacement Procedures and perform Check 1.
Check 1 Visually check for the following:
a) Cracked or broken connector housing
b) Damaged connector pins
If connectors are in good condition, but there is still a problem, go to Check 2.
Check 2 The system board may be damaged. Replace the system board with a new one
following the steps described in Chapter 4, Replacement Procedures.