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C4101 (bizhub 950i/850i)

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Trouble typeC4101:Polygon motor rotation troublePH unit for incorrect marketing area
RankB
Trouble detection condition– The polygon motor fails to turn stably even after the lapse of a given period of time after activating the polygon

– motor.Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.

– PH unit for incorrect marketing is installed.
Trouble isolation–
Relevant electrical parts– PH unit
– PH relay board (PHRYB)
– CPU board (CPUB)
– Base board (BASEB)

Procedure

  1. Check the installed PH unit for correct marketing area and replace it as necessary.
  2. Check the connector between the PH unit-PHRYB CN8 for proper connection and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. Replace the PH unit.
  5. Replace PHRYB.
  6. PHRYB F3 conduction check.
  7. Replace CPUB.
  8. Replace BASEB.

(Link to the Field Service Manual)

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