Toshiba Satellite P775 Series Manual page 81

2Troubleshooting Procedures
The MIC cable or MIC module or system board may be the reason of a MIC fault. Any of
these three components may be damaged. To determine if the computer's MIC is functioning
properly, perform the following procedures. Figure 2-17 outlines the process. Start with
Procedure 1 and continue with the other procedures as instructed.
Procedure 1: Windows Application test
Procedure 2: Perform Software check
Procedure 3: Connector and replacement check
Procedure 1 Windows Application test
PLS use windows application to check MIC can work fine or not. If tests and diagnostics
result abnormal go to Procedure 2. If an error is not located, the MIC module functioning is
properly.
Procedure 2 Perform Software check
Ensure that the appropriate driver has been installed on the computer. If it is stereo-MIC that
ensure enable stereo setting.
If tests and diagnostics result abnormal go to Procedure 3. If an error is not located, the MIC
module functioning is properly.
Procedure 3 Connector and replacement check
The MIC cable or MIC module 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 cable is securely slotted into the system board and MIC
module. If the problem remains, go to Check 2.
Check 2 The MIC cable 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 MIC module may be damaged. Replace it with a new one following the
instructions in Chapter 4. If the problem still exists, perform Check 4.
Check 4 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
Satellite P770/P775 Series Maintenance Manual
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