• Code: C3924
• Description: Fusing sensor wire breaks detection (soaking side)
  • At the warm-up stage, the soaking roller thermistor/1 voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time.
• Causes: Fusing unit IH power supply (IHPU) DC power supply (DCPU) Printer control board (PRCB)
• 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, PRCB and DCPU for proper connection and correct or change as necessary. - - 4 Change fusing unit - - 5 Change IHPU - - 6 Change PRCB - - 7 Change DCPU

• Code: C3925
• Description: Fusing sensor wire breaks detection (NC sensor)
  • At the warm-up stage, the heating roller temperature sensor/1 voltage does not increase by predetermined steps (temperature rise) within a predetermined period of time.
• Causes: Fusing unit Heating roller temperature sensor/1 (TEMS1) Heating roller temperature sensor/2 (TEMS2) Heating roller temperature sensor/3 (TEMS3) IH power supply (IHPU) Relay drive board (REDB) Printer control board (PRCB)
• 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, PRCB and REDB for proper connection and correct or change as necessary. - - 4 Change TEMS1, TEMS2 or TEMS3 - - 5 Change fusing unit - - 6 Change IHPU - - 7 PRCB ICP17 conduction check - - 8 Change PRCB - - 9 Change REDB

• Code: C392A
• Description: Fusing sensor contamination (NC sensor)
  • While checking the contamination on the heating roller temperature sensor/1, detected temperature of the heating roller thermistor/1 exceeded the detected temperature of the heating roller temperature sensor/1 for over the predetermined value for the predetermined period of time.
• Causes: Fusing unit Heating roller temperature sensor/1 (TEMS1) IH power supply (IHPU) DC power supply (DCPU) Printer control board (PRCB)
• Remedy: 1 Wipe the TEMS1 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 TEMS1 for installed position and proper connector connection. - - 3 Check the connection of the fusing unit. - - 4 Check the fusing unit, IHPU, PRCB and DCPU for proper connection and correct or change as necessary. - - 5 Change TEMS1 - - 6 Change fusing unit - - 7 PRCB ICP17 conduction check - - 8 Change PRCB

• Code: C3B02
• Description: IH malfunction (CPU)
  • A failure in communication with the fusing CPU continues for a predetermined period of time.
• Causes: Fusing unit IH coil unit IH power supply (IHPU) Relay drive board (REDB) Printer control board (PRCB)
• 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, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. - - 4 Change fusing unit - - 5 Change IH coil unit - - 6 Change IHPU - - 7 Change PRCB - - 8 Change REDB

• Code: C3B03
• Description: IH malfunction (monitor)
  • Though the IH heater is ON, this status cannot be detected mechanically. (IH heater operation failure) •Though the IH heater is OFF, mechanically, the ON status is detected. (Malfunction of IH heater operation)
• Causes: Fusing unit IH coil unit IH power supply (IHPU) Relay drive board (REDB) Printer control board (PRCB)
• 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, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. - - 4 Change fusing unit - - 5 Change IH coil unit - - 6 Change IHPU - - 7 Change PRCB - - 8 Change REDB

• Code: C3B05
• Description: IH temperature sensor defect
  • While the IH heater was on, IH temperature sensor was disconnected for more than the predetermined period of time. • While the IH heater was on, short circuit on IH temperature sensor continued for more than the predetermined period of time. • While the IH heater was on, temperature change occurred within the predetermined period of time with over the predetermined range, and they continued for more than the predetermined period of time. • While the IH heater was on, temperature around the heat radiator stayed high for over the predetermined period of time.
• Causes: IH coil unit IH power supply (IHPU) Relay drive board (REDB) Printer control board (PRCB)
• Remedy: 1 Check the connection of the fusing unit. - - 2 Check the fusing unit, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. - - 3 Change degaussing coil unit - - 4 Change IHPU - - 5 Change PRCB - - 6 Change REDB

• Code: C3B06
• Description: IH surge error
  • While the IH heater was on, IH stopped due to input voltage which exceeded that of surge detection voltage, and the surge detection voltage continued for more than the predetermined period of time.
• Causes: IH coil unit IH power supply (IHPU) Relay drive board (REDB) Printer control board (PRCB)
• Remedy: 1 Check the connection of the fusing unit. - - 2 Check the fusing unit, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. - - 3 Change degaussing coil unit - - 4 Change IHPU - - 5 Change PRCB - - 6 Change REDB

• Code: C3B07
• Description: IH input power error
  • While the IH heater was on, input power stayed at the high voltage power detection value or over for more than the predetermined period of time. • While the IH heater was on, input power was at the low power detection value or under for more than the predetermined period of time. • While the IH heater was on, input power was at the high voltage detection value or over for more than the predetermined period of time. • While the IH heater was on, input power was below the low voltage detection value or under for more than the predetermined period of time. • While the IH heater was on, inverter power stayed at the upper limit value or over for more than the predetermined period of time. • While the IH heater was on, output voltage halt was detected.
• Causes: IH coil unit IH power supply (IHPU) Relay drive board (REDB) Printer control board (PRCB)
• Remedy: 1 Check the connection of the fusing unit. - - 2 Check the fusing unit, degaussing coil unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. - - 3 Change degaussing coil unit - - 4 Change IHPU - - 5 Change PRCB - - 6 Change REDB