Toshiba A20-S259 Maintenance Manual - Page 69
System Board Troubleshooting, Sound Troubleshooting, Troubleshooting Procedures
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2.12 Sound Troubleshooting 2 Troubleshooting Procedures 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) 2-19
2.12
Sound Troubleshooting
2
Troubleshooting Procedures
Satellite A20 Maintenance Manual (960-444)
2-19
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