Error code C-1352 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1352
Classification: RU: RU-509 abnormality
Cause:

Error detection signals of FM4 and FM5 are detected continuously for a specified period of time while the ventilation assist fans/1 (FM4) and /2 (FM5) are ON.

Measures to take when alert occurs:

         The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • Ventilation assist fan /1 (FM4)
  • Ventilation assist fan /2 (FM5)
  • 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 RUCB and the fan, and repair it if any abnormality.
  2. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: RU-509: 9-F, 8-H). 
  3. Replace FM4 and FM5.
  4. Replace RUCB.
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