What is the purpose of the optical sensor in a Rowe AMI CD100 Jukebox.   
   I think this is my problem. I have replaced the CCC and I no longer get error   
   messages, but the CD holder continues to rotate when the machine turns on, and   
   does not load the CD when the selection is chosen.   
   I have checked all the voltages on the CCC, and MCC, and they are correct. I   
   have had the MCC tested, and it is fine.   
   The manual says that the problem says it is either the optical sensor, or the   
   wiring. Does this sound plausible, if so I will replace the optical sensor.   
   Also how difficult is it to replace a sensor, and how is it done?   
      
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