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C720F (bizhub C4000i/C3300i)

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Trouble typeC720F: ADU reverse rotation clutch failure
RankC
Trouble detection conditionAfter starting the clutch, an error is detected for the malfunction detection signal.
Trouble isolation–
Relevant electrical parts• ADU reverse rotation clutch (CL7)
• Base board (BASEB)

Procedure

  1. Check the connector between CL7-relay CN39-BASEB CN18E for proper connection and correct as necessary.
  2. Check the connector of CL7 for proper drive coupling and correct as necessary.
  3. CL7 conduction check
    • Control signal: BASEB CN18E-8 (ON)
    • Location of electrical component: 3-C
  4. Replace CL7. (Part# A7AHM20501)
  5. Replace BASEB. (Part# AAJRH02005)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

L.3.11.10 (Link to the Field Service Manual)

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