I should have just stuck with Canon but too late now. My customer called and said they had a finisher error. I told them to check for jammed paper in the finisher and when she called back to tell they found jammed paper, but now it make a rattling sound and it throws a L4-11 code.I pulled the exit unit out and checked everything and it all seems fine. I did swap the shift motor home position sensor with one from an old fuser and it did the same error. The part numbers are the same, I did swap them back. But now when I turn it on the display tells me to close the upper right door and I have checked everything on and around the door. I went into the sims and looked at the sensors and it shows that the right door is closed. What also is strange is the front shows closed even when it's open. I have no idea what's going on now. I am 98% sure there was nothing that I did to cause this. The only thing I was doing is taking the exit assly out a half dozen times to check if the L4-11 was happening. The manual says it might be the pcu for the L4-11. Would it cause both problems?
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