Error codes on Panasonic AG-1970P SVHS VCR?
 

I've got a Panasonic AG-1970P SVHS VCR that has problems with the load & eject mechanism. The VCR uses the Panasonic G2 mechanism. I've tried realigning the gears that control the load & eject mechanism & replacing the main cam gear (The original was missing some teeth.), however I either get error codes or the mechanism jams & makes loud noises. The error codes I am getting are 011C4, 021C2 & 020C5. I tried checking the service manual for these error codes, but couldn't find anything about them. Please help, thank you.