Error code C-1222 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1222
Classification: FD: FD abnormality
Cause:
Within a specified period of time after the 2nd folding release motor (M15) becomes active, the 2nd folding cam home sensor (PS56) does not become active.

 Measures to take when alert occurs:

The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • 2nd folding release motor (M15)
  • Folding drive board (FDB)
  • 2nd folding cam home sensor (PS56)
Correction:
Press the help key, and activate and deactivate the sub power switch (SW2) of the main body.
Note: 
  • When you isolate the faulty part, the limited use is available.
  • The messages "Please call service" and "Press [Help] to disengage" are displayed alternately on the touch panel.
  • When you press the help key, the message "Please turn on power again" is displayed on the touch panel.                    
Solution:
  1. Check the 2nd folding section, and clean or repair it when there is any abnormality.
  2. Check the connector connection and the wiring between FDB and the motor and the sensor, and repair it when there is any abnormality.
  3. Check the I/O drive of the motor and the coupling of the gear, and repair or replace it when  there is any abnormality. (Wiring diagram: FD-503: 1-B)
  4. Check I/O and the operation of the sensor, and repair or replace it when there is any abnormality. (Wiring diagram: FD-503: 2-B)
  5. Replace PS56.
  6. Replace M15.
  7. Replace FDB.
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