Was replacing fuser belt and when reinstalling fuser must have shorted CDB board. The long purple wire connector was broken on one end so must have installed connector 1 pin off. Would get C-3102 on startup. Pulled CDB and found ICP 14 open. Replaced fuse and back up and running. Another tip i found is that when we scrap old machines we remove the ICP's off of them. Posted this in the hope it helps someone in the future.