Toshiba PORTG R300 User Manual
2 Troubleshooting Procedures
PORTEGE R300 Maintenance Manual (960-591)
[CONFIDENTIAL]
2-21
2.4 System
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.
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: Debugging Port Check (Boot Mode)
Procedure 3: Diagnostic Test Program Execution Check
Procedure 4: Replacement Check