Error code C-1291 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

Code: C-1291
Classification: RU: RU-509 abnormality
Cause:
The home position search operation of the de-curler pressure motor/Lw (M5) does not complete within a specified period of time.

Measures to take when alert occurs:

         The main body and the option stop immediately.                                                 
Estimated abnormal parts:
  • De-curler pressure motor/Lw (M5)
  • RU control board (RUCB)
Correction:
      Turn OFF/ON the power switch (SW2) of the main body when releasing an abnormal condition. 
Note: 
  • The message "Please call service" is displayed on the panel.

Solution:

  1. Check the de-curler section, and clean/repair it if any abnormality.
  2. Check the connector connection and the wiring between RUCB and the motor, and repair it if any abnormality.
  3. Check the I/O drive of the motor and the coupling of the gear, and repair or replace it if any abnormality. (Wiring diagram: RU-509: 10-F)
  4. Replace M5.
  5. Replace RUCB.
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