System Board Troubleshooting - Toshiba TECRA A8 series Maintenance Manual

2.4 System Board Troubleshooting

2.4
This section describes how to determine if the system board and CPU are defective or not
functioning properly. Start with Procedure 1 and continue with the other procedures as
instructed.
The procedures described in this section are:
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
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System Board Troubleshooting
Procedure 1: Message Check
Procedure 2: Debugging Port Check (Boot Mode)
Procedure 3: Diagnostic Test Program Execution Check
Procedure 4: Replacement Check
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2 Troubleshooting Procedures
[CONFIDENTIAL] 2-21