Toshiba Satellite Maintenance Manual page 77

2 Troubleshooting Procedures
Procedure 1: Diagnostic test
Procedure 2: Connector and replacement check
Procedure 1 Diagnostic test
Run the functioning Program on Windows model, which will display the MIC test result.
If tests and diagnostics result abnormal go to Procedure 2. If an error is not located, the MIC
module functioning is properly.
Procedure 2 Connector and replacement check
The MIC line or system board may be disconnected or damaged. Disassemble the computer
following the steps described in Chapter 4, Replacement Procedures, and perform the
following checks.
Check 1 Make sure that the MIC line is securely slotted into the system board. If the
problem remains, go to Check 2.
Check 2 The MIC line may be damaged. Replace it with a new one following the
instructions in Chapter 4. If the problem still exists, perform Check 3.
Check 3 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
43