2Troubleshooting Procedures 
Satellite A660/A665 Series Maintenance Manual  
2.24  CIR Troubleshooting  
 
START
Perform CIR test
(Procedure 1)
Was a CIR problem detect?
CIR is not faulty. Continue 
troubleshooting-refer to 
Figure 2-1
Replace system 
board
Perform connector 
and replacement 
check
(Procedure 2)
END
 
 
Figure 2-23 CIR troubleshooting process 
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.