SOURCE: Error Message: Replace Black PCU
I'm not sure how to obtain one, but "Black PCU" stands for Black Photoconductor Unit, and according to a manual for a different Ricoh printer model, it should be fairly simple to replace if you can find one.
SOURCE: CRU Fuse Error
you need to replace the toner cartridge and or the fuse on the toner cartridge
http://www.websitetoolbox.com/mb/copierquestions
SOURCE: Ricoh 3800c sc285 error message
Most of the time it is the transfer belt. The belt has gotten scratched up with age and the mach has trouble doing the line position adj.
SOURCE: I have a Ricoh Aficio AP410N printer and it
Did you take out the toner cartridge and paper trays and open all the covers to try to find the misfeed? If there is really nothing there, you can try turning the printer off and back on to see if it clears itself.
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