System Board Troubleshooting - Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual

2.12 Sound Troubleshooting
2.4

System Board Troubleshooting

This section describes how to determine if the system board is 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 Boot Mode
Procedure 3: Diagnostic Test Program Execution Check
Procedure 4: Replacement Check
Satellite A20 Maintenance Manual (960-444)
2 Troubleshooting Procedures
2-19