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C255C (bizhub 950i/850i)

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Trouble typeC255C: Black TCR sensor adjustment failure
RankB
Trouble detection conditionTCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
Trouble isolation–
Relevant electrical parts– Developing unit
– CPU board (CPUB)
– Base board (BASEB)

Procedure

  1. Reinstall the developing unit.
  2. Check CPUB for proper installation and correct as necessary.
  3. Replace the developing unit.
  4. Replace CPUB.
  5. Replace BASEB.

(Link to the Field Service Manual)

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