Error code C-1251 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951
Code: C-1251
Classification: SD: SD-506 abnormality
Cause:
The saddle stitching alignment home sensor/Lt (PS29) does not become active within a specified period of time after the saddle stitching alignment motor/Lt (M16) starts the home position search operation. Alternatively, even after a period of time after M16 starts the operation, it does not stop.
Measures to take when alert occurs:
The main body and the option stop immediately.
Estimated abnormal parts:
- Saddle stitching alignment motor/Lt (M16)
- Saddle stitching alignment home sensor/Lt (PS29)
- SD control board (SDCB)
- SD drive board (SDDB)
Press the help key to 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 message "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 the power again" is displayed on the touch panel.
Solution:
- Check the saddle stitching alignment section, and clean or repair it when there is any abnormality.
- Check the connector connection and the wiring between SDDB and the motor and the sensor, and repair it when there is any abnormality.
- Check the connector connection and the wiring between SDDB and SDCB, and repair it when there is any abnormality.
- 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: SD-506: 15-D)
- Check I/O and the operation of the sensor, and repair or replace it when there is any abnormality. (Wiring diagram: SD-506: 17-D)
- Replace PS29.
- Replace M16.
- Replace SDDB.
- Replace SDCB.