Error code C-1173 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1173
Classification: FS: SD-510 abnormality
Cause:
The stapler shift home sensor (PS105) does not turn On within a specified period of time after the stapler movement motor (M103) turns ON.

Measures to take when alert occurs:

The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • FNS control board (FNSCB)
  • SD control board (SDCB)
  • Stapler movement motor (M103)
  • Stapler shift home sensor (PS105)
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 SDCB and motor/sensor, and repair it if any abnormality.
  2. Check the connector connection and the wiring between FNSCB and SDCB, and repair it if any abnormality.
  3. Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. (Wiring diagram: SD-510: 2-G) 
  4. Check I/O and the operation of the sensor, and repair/replace it if any abnormality. (Wiring diagram: SD-510: 3-B)
  5. Replace PS105.
  6. Replace M103.
  7. Replace SDCB.
  8. Replace FNSCB. 
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