Need Help !
Judging from the symptoms, I'd guess that "ACCS" means "accessory". All CD players have a constant power input and an accessory power input. There has to be voltage on both wires for the CD player to work, although the clock and CD load/eject functions will work with just a constant power connection. My guess is that there's an accessory switch somewhere in the boat that needs to be turned on for the CD player to activate.
Failing that, if you can get the the wiring on the back of the CD player, the red wire is the accessory power wire. You can simply cut it and re-connect it to the same source as the yellow constant power wire. This will allow the CD player to work independently of any outside switches.
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