I printed an error log and see that this error has come up randomly for the past 300k prints. I actually saw it happen while i was there today but the drum unit was not out of position. Another tech put in a new drum unit about a month ago and he also updated the firmware. I have noticed when it happens, it prints out a real faint image then throws the code. Simply powering off/on clears to error. Also i noticed frequent jams that is caused by a cover open or "forced stop" as the service manual reads. I'm thinking maybe the switching regulator might be at fault as the drum unit plugs into it and the top cover switch is mounted on that board. Has anyone else seen this problem?
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