Error code C-1261 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1261
Classification: SD: SD-506 abnormality
Cause:
The stapler home sensor/Rt (HS1) or the clincher start sensor/Rt (HS2) does not become active even after a specified period of time after the stapler motor/Rt (M29) starts  the operation.
Measures to take when alert occurs:
         The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • Stapler assembly/Rt
  • SD control board (SDCB)
  • SD drive board (SDDB)
Correction:
         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:
  1. Check the stapler unit/Rt, and clean or repair it when there is any abnormality.
  2. Check the connector connection and the wiring between SDDB and the stapler unit/Rt, and repair it when there is any abnormality.
  3. Replacing the stapler assy/Rt.
  4. Replace SDDB.
  5. Replace SDCB.
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