What could cause an SBU white/black level correction error on my Ricoh K-C3 All in One Printer?
- RRobert JonesSep 14, 2025
An SBU white/black level correction error on your Ricoh All in One Printer could be caused by a defective exposure lamp, a dirty white plate, an incorrect position or width of white plate scanning, a defective BICU board, or a defective SBU board.