2.4 System Board Troubleshooting

2 Troubleshooting Procedures

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.

PORTEGE A200 Maintenance Manual (960 -499)

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Toshiba A200 manual Procedure 3 Diagnostic Test Program Execution Check, Procedure 4 Replacement Check