C7131 (bizhub C750i)

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Trouble typeC7131: Toner supply motor/C 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/C (M7)
-Expansion control board (EXCB)

Procedure

  1. Check the connector between M7-EXCB CN11EX for proper connection and correct as necessary.
  2. Check the connector of M7 for proper drive coupling and correct as necessary.
  3. M7 conduction check.
    • Control signal: EXCB CN11EX-17 to 20
    • Location of electrical component: 16-P
  4. Replace M7. (Part# A7PUM10700)
  5. Replace EXCB. (Part# AA7NH00500)

(Link to the Field Service Manual)