Need Help Mutoh VJ1204 'E068' error - I've replaced everything

What about the encoder sensor? Does it have a calibration for the encoder? Try calibrating other things too. I don’t know this brand but I know on others sometime the errors are misleading.

 

I had the same issue with mine that was flushed but sat for a few years. I cleaned everything in the mechanism very well and that seemed to work for me. It took me a few hrs to get the gunk to soften and removed. Might be worth a shot, if you haven’t already done so.

 

It seems you have replaced just about everything to fix this error as per attached troubleshooting guide

 

You've probably done this, but check the belt tension, I had one which would throw that code....tightened the belt - fixed!

 

Check the plunger....aka locking pin. Ink builds up and restricts the plunger from going down or unlocking the carriage and will give the 068 error message.Remove it and give it a good cleaning (It's a single screw that hold the bracket) Also over time the plunger will be slightly bent, straighten it up and see if that helps get past the error.

Just my .02