2Troubleshooting Procedures 
Satellite A660/A665 Series Maintenance Manual  
Figure 2-23 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.