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C7153 (bizhub C650i/C550i/C450i)

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Trouble typeC7153: Skew correction motor/Y failure
RankC
Trouble detection conditionAfter starting the motor, an error is detected for the malfunction detection signal.
Trouble isolation–
Relevant electrical parts-PH unit
-Expansion control board (EXCB)

Procedure

  1. Check the connector between the PH unit-relay CN300-EXCB CN7EX for proper connection and correct as necessary.
  2. PH unit conduction check
    • Control signal: EXCB CN7EX-1 to 6 (C7153), EXCB CN7EX-7 to 12 (C7152), EXCB CN7EX-13 to 18 (C7151)
    • Location of electrical component: 20 to 21-P
  3. Replace the PH unit. (C650i/C550i Part# AA7NR70500 / C450i AA7RR70100)
  4. Replace EXCB. (Part# AA2JH00500)

L.3.14.13 (Link to the Field Service Manual)

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