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Error code C-0312 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

by sherlyn planas on January 08, 2024
Code: C-0312
 Classification: Main body: Fan abnormality
Cause: 
Paper cooling exit fan /Lw2 (FM28) rotation abnormality.
The FM28EM error detection signal is detected twice in succession within a specified period of time after FM28 was turned ON. At this time, an error detection signal (24V cut off) is not detected. 
                                 
Measures to take when alert occurs:                                                            
The main body and the option stop immediately. 
        
Estimated abnormal parts:
  • Paper exit cooling fan /Lw2 (FM28) 
  • Printer control board (PRCB)
  • AC drive board (ACDB)
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 connector connection and the wiring between PRCB and the fan, and repair it if any abnormality.
  2. Check the connector connection and the wiring between ACDB and the fan, and repair it if any abnormality.
  3. Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: Main body (2/4): 9-A).
  4. Replace FM28.
  5. Replace PRCB.
  6. Replace ACDB.
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