C225A (bizhub C759/C659)

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Trouble typeC225A: Developing motor/K turning at abnormal timing
RankB
Trouble detection conditionThe motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
Trouble isolation–
Relevant electrical parts-Developing unit/K
-Developing motor/K (M19)
-MFP board (MFPB)

 Procedure

  1. Check the connector between M19-MFPB CN10E, CN16E for proper connection and correct as necessary.
  2. Check the connector of M19 for proper drive coupling and correct as necessary.
  3. M19 load check
    • Check code: 50
    • Multi code: 5, 6, 7, 8
    • Control signal: MFPB CN16E-5 (DC24V), MFPB CN10E<A>-9 (START/STOP)
    • Location of electrical component: 5-K
  4. Replace M19. (Part# A61DM10200)
  5. Replace the developing unit/K. (Part# A9K703D)
  6. MFPB F10E conduction check
  7. Replace MFPB. (Part# A8JEH02002)

L.3.9.7 (Link to the Field Service Manual)