• Code: C3726
• Description: Fusing abnormally high temperature detection (Center of the heating side)
  Detected temperature of the heating roller thermistor/2 (TH2) 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, IHPU (bizhub C554 only) and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit (bizhub C554/bizhub C454). 5 Replace IHPU (bizhub C554 only). 6 Replace PRCB.

• Code: C3822
• Description: Fusing abnormally low temperature detection (Edge of the heating roller)
  The heating roller thermistor/1 continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit. 5 Replace IHPU. 6 Replace PRCB.

• Code: C3825
• Description: Fusing abnormally low temperature detection (Main of the heating roller)
  The heating roller temperature sensor (TEMS) continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU (bizhub C554 only) and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit (bizhub C554/bizhub C454). 5 Replace IHPU (bizhub C554 only). 6 PRCB ICP15 conduction check. 7 Replace PRCB.

• Code: C3826
• Description: Fusing abnormally low temperature detection (Center of the heating roller)
  The heating roller thermistor/2 (TH2) continues to detect a temperature lower than a predetermined one for a predetermined period of time.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit, IHPU (bizhub C554 only) and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit (bizhub C554/bizhub C454). 5 Replace IHPU (bizhub C554 only). 6 PRCB ICP15 conduction check. 7 Replace PRCB.

• Code: C3922
• Description: Fusing sensor wire breaks detection (Edge of the heating roller)
  After a predetermined period of time after the warm-up stage is started, the heating roller thermistor/1 (TH1) voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit (bizhub C554/bizhub C454). 5 Replace PRCB.

• Code: C3925
• Description: Fusing sensor wire breaks detection (Center of the heating roller)
  After a predetermined period of time after the warm-up stage is started, the heating roller temperature sensor (TEMS) voltage does not increase by predetermined steps (temperature rise) within a predetermined period of time.utively.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit (bizhub C554/bizhub C454). 5 Replace PRCB.

• Code: C3926
• Description: Fusing sensor wire breaks detection (Middle of the heating roller)
  • After a predetermined period of time after the warm-up stage is started, the heating roller thermistor/2 (TH2) voltage does not decrease by predetermined steps (temperature rise) within a predetermined time. • When a temperature detected by the heating roller thermister/1 (TH1) is compared with the temperature detected by the heating roller thermister/2 (TH2) to find out that the difference exceeded the predetermined temperature.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the upper right door. 3 Check the fusing unit and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit (bizhub C554/bizhub C454). 5 Replace PRCB.

• Code: C392A
• Description: Heating roller temperature sensor contamination (Center of the heating roller)
  When the machine is in standby mode after a predetermined period of time after the warm-up stage is started, detected temperature of the heating roller temperature sensor (TEMS) lower than a given temperature for a given period of time consecutively.
• Remedy: 1 Wipe the TEMS clean of dirt if any. <Cleaning procedure> • Clear away a dirt or a foreign object on the sensor with a cotton swab. • When a dirt is left even if you cleaned the sensor by above procedure, clear away a dirt or a foreign object on the sensor using a cotton swab dampened with the alcohol. And, wipe off the sensor with a dry cotton swab afterwards. 2 Check the TEMS for installed position and proper connector connection. 3 Check the connection of the fusing unit. 4 Check the fusing unit and PRCB for proper connection and correct or change as necessary. 5 Replace the fusing unit. 6 Replace PRCB.