CDF51, CDF71, CDFA1 (bizhub C750i)

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Trouble typeCDF51: ASIC image version failure (back side)

CDF71: ASIC image access failure (back side)

CDFA1: ASIC image error (back side)
RankC
Trouble detection conditionCommunication error is detected between the CPU board (CPUB) and the CIS module (CIS).
Trouble isolation–
Relevant electrical parts-CIS module (CIS)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check the connector between CIS CN2-BASEB CN5 for proper connection and correct as necessary.
  2. Check CPUB for proper installation and correct as necessary.
  3. Rewrite the firmware.
  4. Replace CIS. (Part# AAMPR70100)
  5. Replace CPUB. (Part# ACKNH02P03)
  6. Replace BASEB. (Part# ACKNH02101)

(Link to the Field Service Manual)