2Troubleshooting Procedures
The MIC line or system board may be the reason of a MIC fault. Either of these two
components may be damaged. To determine if the computer’s MIC is functioning properly,
perform the following procedures. Figure
and continue with the other procedures as instructed.
Procedure 1: Windows Application test
Procedure 2: Connector and replacement check
Procedure 1 Windows Application test
Run the functioning Program (record.exe) 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.
SatelliteA660/ProA660 Series Maintenance Manual 57
