2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2.4 System Board Troubleshooting This section describes how to determine if the system board is defective or not. Start with
Procedure 1 and continue with the other procedures as instructed. The procedures described
in this section are:
Procedure 1: Message Check
Procedure 2: Printer Port LED Check
Procedure 3: Diagnostic Test Program Execution Check
Procedure 4: Replacement Check
2-18 Satellite A40 Maintenance Manual (960-458)