Error code C-0377 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-0377
                                                  Classification: PF: Fan abnormality                                                                       
Cause:
2nd tandem PF-703/706 paper feed assist fan /Rr2 (FM6: PF-703, FM4: PF-706) rotation abnormality.
The FM6 EM and FM4 EM error detection signals are detected twice in succession within a period of time after FM6 and FM4 were turned ON. However, an error detection signal (blowout of ICP) is not detected.                 
      
 Measures to take when alert occurs: 
The main body and the option stop immediately. 
                                             
 
Estimated abnormal parts:
  • Paper feed assist fan /Rr2 (FM6: PF-703)
  • Paper feed assist fan /Rr2 (FM4: PF-706)
  • PF drive board (PFUDB)

Correction:

Turn OFF/ON the power switch (SW2) of the main body when releasing an abnormal condition.

Note: The message "Please call service" is displayed on the panel.                      
Solution:
  1. Check the connector connection and the wiring between PFUDB and the fan, and repair it if any abnormality.
  2. Rotate the fan by I/O or hand, and repair it if any abnormality. (Wiring diagram: PF-703: 11-F, PF-706: 7-C).
  3. Replace FM6 : PF-703.                                                                                                                                                               Replace FM4 : PF-706.
  4. Replace PFUDB.
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