Error code C-1131 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1131
Classification: ZU: ZU-608 abnormality
Cause:
2nd folding stopper home sensor (PS604) does not turn ON within a specified period of time after the 2nd folding stopper motor (M603) starts the home position search operation.
   
Measures to take when alert occurs:
The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • ZU control board (ZUCB)
  • 2nd folding stopper motor (M603)
  • 2nd folding stopper home sensor (PS604)
Correction:
Turn OFF/ON the sub power switch of the main body.
Note: The message "Please call service" is displayed on the panel.
                      
Solution:
  1. Check the connector connection and the wiring between ZUCB and motor/sensor, and repair it if any abnormality.
  2. Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. (Wiring diagram: ZU-608: 2-B)
  3. Check I/O and the operation of the sensor, and repair/replace it if any abnormality. (Wiring diagram: ZU-608: 3-B)
  4. Replace PS604.
  5. Replace M603.
  6. Replace ZUCB. 
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