Rowe changer problems

I had the same error on both machines "CK L COIN DETCTR". 

I decided to take one out and clean it and the coin hopper.  I really did not know what to do.  I just knew neither changer worked.  I also dumped the coins out of the coin dispenser assembly.  I concentrated on the coin leds and censor.

It seems to work but I will have to check tomorrow.  Also, I love the Rowe instructions it seems to always boil down to replace the CCC.