2.4 System Board Troubleshooting 2 Troubleshooting Procedures
2-18 PORTEGE M300 Maintenance Manual (960-504)
2.4 System Board Troubleshooting This section describes how to determine if the system board is functioning properly. Perform
the steps below starting with Procedure 1 and continuing with the other procedures as
required.
Procedure 1: Message Check
Procedure 2: Debugging port Check on Boot Mode
Procedure 3: Diagnostic Test Program Execution Check
Procedure 4: Replacement Check