Error code C-1266 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1266
Classification: SD: SD-513 abnormality
Cause:
After the fore edge stopper motor (M24) starts the home position search operation, the fore edge stopper sensor (PS35) does not become active within a specified period of time. In the other case, the fore edge finger motor (M52) does not complete the evacuation operation. The fore edge stopper position sensor (PS36) does not become active even after a specified period of time since the M24 starts the operation. In the other case the M52, does not complete the operation pressure 
At the start, the activation of the PS35 and the PS36 are detected at the same time.

 Measures to take when alert occurs:

         The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • Fore edge stopper home sensor (PS35)
  • Fore edge stopper position sensor (PS36)
  • Fore edge stopper motor (M24)
  • Fore edge finger motor (M52)
  • SD drive board (PCB2)
  • SD control board (PCB1)
Correction:
         Press help key and activate and deactivate the sub power switch (SW2) of the main body.
Note: 
  • Faulty part isolation allows you to use the machine temporarily.
  • When you press HELP key, the message "Please call service" and "Press [Help] to disengage" are displayed alternately. 
  • When you press HELP key, the message "Please turn on the power again" is displayed.

Solution:
  1. Check the fore edge stopper drive section, and if there is any abnormality, clean or repair it.
  2. Check the connector connection and the wiring harness between PCB2 and the motor, PCB1 and the sensor. Then, repair them when there is any abnormality. (Wiring diagram: SD-513 (2/2): 7-B) (Wiring diagram: SD-513 (2/2): 17-O). 
  3. Check the connector connection and the wiring harness between PCB2 and PCB1, and if there is any abnormality, repair them.
  4. Check the I/O drive of the motor and the coupling of the gear, and repair or replace it when there is any abnormality.
  5. Check I/O and the operation of the sensor, and if there is any abnormality, repair or replace it.
  6. Replace PS35 or PS36.
  7. Replace M24 or M52.
  8. Replace PCB2.
  9. Replace PCB1.
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