• Code: C3723
• Description: Fusing abnormally high temperature detection (Pressurizing side)
  • Detected temperature of the pressure roller thermistor goes beyond a given temperature for a given period of time consecutively.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.

• Code: C3821
• Description: Fusing abnormally low temperature detection (Heating side)
  • Detected temperature of the heating roller thermistor/C goes below a given temperature for a given period of time consecutively after warm up is completed. • Detected temperature of the heating roller thermistor/M goes below a given temperature for a given period of time consecutively after warm up is completed.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.

• Code: C3823
• Description: Fusing abnormally low temperature detection (Pressurizing side)
  • Detected temperature of the pressure roller thermistor goes below a given temperature for a given period of time consecutively after warm up is completed.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.

• Code: C3921
• Description: Fusing sensor wire breaks detection (Heating side)
  • The maximum value and minimum value of detected temperature of the heating roller thermistor/C, M and S are compared after a lapse of given time from starting of warm up and the gap between the value of maximum and minimum of either thermistor is below or over a given temperature. • The detected temperature gap between the heating roller thermistor /C and the heating roller thermistor/M surpasses a given temperature.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.

• Code: C3923
• Description: Fusing sensor wire breaks detection (Pressurizing side)
  • The maximum value and minimum value of detected temperature of the pressure roller thermistor are compared after a lapse of given time from starting of warm up and the gap between the value of maximum and minimum is below or over a given temperature. • The pressure heater lights up for a given period of time consecutively.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.

• Code: C4101
• Description: Polygon motor rotation trouble
  • The polygon motor fails to turn stably even after the lapse of a given period of time after activating the polygon motor. • Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.
• Remedy: 1 Check the connector between PH unit- PHREYB CN6 for proper connection and correct as necessary. 2 Check the connector between PHREYB CN3-PRCB CN26 for proper connection and correct as necessary. 3 Change PH unit. 4 PHREYB ICP1 conduction check. 5 Change PHREYB. 6 Change PRCB.

• Code: C4501
• Description: Laser malfunction
  • SOS signal is not detected even after the lapse of a given period of time after staring the laser output. • SOS signal is not detected for a given period of time during printing or IDC sensor adjustment.
• Remedy: 1 Check the connector between PH unit- PHREYB CN5 for proper connection and correct as necessary. 2 Check the connector between PHREYB CN2-PRCB CN25 for proper connection and correct as necessary. 3 Change PH unit. 4 PRCB ICP12 conduction check. 5 Change PHREYB. 6 Change PRCB.

• Code: C5102
• Description: Transport motor’s failure to turn
  • The motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Remedy: 1 Check the connector between M1-PRCB CN14 for proper connection and correct as necessary. 2 Check M1 for proper drive coupling and correct as necessary. 3 M1 operation check PRCB CN14-2 (REM) PRCB CN14-5 (LOCK) C-2 to 5. 4 Change M1. 5 Change PRCB.