Error code C-1357 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1357
Classification: RU: RU-509 abnormality
Cause:

 An error detection signal of FM7 is detected continuously for a specified period of time while the humidification section paper fan/2 (FM7) is ON.

Measures to take when alert occurs:

         The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • Humidification section paper fan/2 (FM7)
  • HM drive board (HMDB)
  • RU control board (RUCB)
Correction: 
        Turn OFF/ON the sub power switch (SW2) on 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 HMDB and the fan, and repair it if any abnormality.
  2. Check the connector connection and the wiring between HMDB and RUCB, and repair it if any abnormality.
  3. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: RU-509: 19-O). 
  4. Replace FM7.
  5. Replace HMDB.
  6. Replace RUCB.
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