Error code C-1264 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1264
Classification: SD: SD-513 abnormality
Cause:
After the trimmer press motor (M32) starts the home position search operation, the trimmer press home sensor (PS52) does not become active within a specified period of time. At the start, the activation of the trimmer press upper limit sensor (PS51) and deactivation of PS52 are detected at the same time.

 Measures to take when alert occurs:

         The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • Trimmer press upper limit sensor (PS51)
  • Trimmer press home sensor (PS52)
  • Trimmer press motor (M32)
  • 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: 
  • When you isolate the faulty part, the limited use is available.
  • When you press HELP key, the message "Please call service" and "Press [Help] to disengage" are displayed alternately on the touch panel.
  • When you press HELP key, the message "Please turn on the power again" is displayed on the touch panel.
Solution:
  1. Check the trimmer press 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): 8-B) (Wiring diagram: SD-513 (2/2): 11-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 PS51 or PS52.
  7. Replace M32.
  8. Replace PCB2.
  9. Replace PCB1.
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