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Error code C-0304 for Bizhub Press 1250 1250P 1052 Bizhub Pro 951

by sherlyn planas on January 05, 2024
Code: C-0304
  Classification: Main body: Fan abnormality
Cause: 
Paper cooling exit fan /Up (FM4) rotation abnormality + 24V power abnormality.
The FM4EM error detection signal is detected twice in succession within a specified period of time after FM4 was turned ON. At this time, an error detection signal (24V cut off) is detected.                                  
Measures to take when alert occurs:                                                            
The main body and the option stop immediately. 
        
Estimated abnormal parts:
  • DC power supply /2 (DCPS/2)
  • 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 ACDB and DCPS /2, and repair it if any abnormality.
  2. Replace DCPS /2
  3. Replace ACDB.
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