CDF51, CDF71, CDFA1 (bizhub 950i/850i)

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Contents

Trouble type	– CDF51: ASIC image version failure (back side) – CDF71: ASIC image access failure (back side) – CDFA1: ASIC image error (back side)
Rank	C
Trouble detection condition	Communication 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.
5. Replace CPUB.
6. Replace BASEB.

(Link to the Field Service Manual)