Toshiba M1 manual System Board Troubleshooting

2 Troubleshooting Procedures 2.5 FDD TroubleshootingSystem Board Troubleshooting

2.4System Board Troubleshooting

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:

Procedure 1: Message Check

Procedure 2: Printer Port LED Check on Resume Mode

Procedure 3: Diagnostic Test Program Execution Check

Procedure 4: Replacement Check

2-16 TECRA M1 Maintenance Manual (960 -436)