2Troubleshooting Procedures
Satellite P770/P775 Series Maintenance Manual
53
The system board may be the reason of a CIR fault. The system board may be damaged. To
determine if the computer’s CIR is functioning properly, perform the following procedures.
Figure 2-21 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
Play MP3 in windows, use remote control to check the device can work fine or not.
If tests and diagnostics result abnormal go to Procedure 2. If an error is not located, the CIR
module functioning is properly.
Procedure 2 Connector and replacement check
The CIR 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 CIR operation is correct, go to Check 2.
Check 2 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
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