Toshiba Satellite A660-BT3G25X Maintenance Manual - Page 91
Windows Application test
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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 2-19 outlines the process. Start with Procedure 1 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