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C7137 (bizhub C750i)

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Trouble typeC7137: Toner supply motor/K failure
RankC
Trouble detection conditionAfter starting the motor, an error is detected for the malfunction detection signal.
Trouble isolation
Relevant electrical parts-Toner supply motor/K (M6)
-Expansion control board (EXCB)

Procedure

  1. Check the connector between M6-relay CN126-EXCB CN10EX for proper connection and correct as necessary.
  2. Check the connector of M6 for proper drive coupling and correct as necessary.
  3. M6 conduction check.
    • Control signal: EXCB CN10EX-16 to 19
    • Location of electrical component: 23-P
  4. Replace M6. (Part# A7PUM10700)
  5. Replace EXCB. (Part# AA7NH00500)

(Link to the Field Service Manual)

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