Toshiba M1 User Manual

2.5 FDD TroubleshootingSystem 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