Toshiba 960-809 Manual Do Utilizador

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  Troubleshooting Procedures  
PORTEGE M780 Maintenance Manual (960-809) 
 [CONFIDENTIAL] 
2-23 
2.4  System Board Troubleshooting 
This section describes how to determine if the system board is malfunctioning or not. 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 
Procedure 3:  Diagnostic Test Program Execution Check 
Procedure 4:  Replacement Check