Error code C-1223 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1223
Classification: FD: FD abnormality
Cause:
Within a specified period of time after the 3rd folding release motor (M16) becomes active, the 3rd folding cam home sensor (PS57) does not become active.

 Measures to take when alert occurs:

The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • 3rd folding release motor (M16)
  • Folding drive board (FDB)
  • 3rd folding cam home sensor (PS57)
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 3rd 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 PS57.
  6. Replace M16.
  7. Replace FDB.
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