• Code: C3452
• Description: Fusing Pressure Roller warm-up failure
  • The voltage of the Fusing Pressure Roller Thermistor does not increase by five steps within 20 sec. after the predrive of the Fusing Roller has been started during a warm-up cycle.
• Remedy: 1 Check the Fusing Unit for correct installation (whether it is secured in position). 2 Check the Fusing Unit, PWB-MC and PU1 for proper connection and correct or change as necessary. 3 Change Fusing Unit. 4 Change PWB-MC. 5 Change PU1.

• Code: C3461
• Description: New Fusing Unit resetting failure
  • A new installation is not detected when a new Fusing Unit is installed.
• Remedy: 1 Reinstall Unit. 2 Change PWB-MC.

• Code: C3751
• Description: Heating Roller abnormally high temperature
  • A temperature of 225 °C or more of the Heating Roller is detected for 1 sec. or more.
• Remedy: 1 Check the Fusing Unit for correct installation (whether it is secured in position). 2 Check the Fusing Unit, PWB-MC and PU1 for proper connection and correct or change as necessary. 3 Change Fusing Unit. 4 Change PWB-MC. 5 Change PU1.

• Code: C3752
• Description: Fusing Pressure Roller abnormally high temperature
  • A temperature of 190 °C or more of the Fusing Pressure Roller is detected for 1 sec. or more before the start of the heater temperature control. • A temperature of 215 °C or more of the Fusing Pressure Roller is detected for 1 sec. or more after the start of the heater temperature control.
• Remedy: 1 Check the Fusing Unit for correct installation (whether it is secured in position). 2 Check the Fusing Unit, PWB-MC and PU1 for proper connection and correct or change as necessary. 3 Change Fusing Unit. 4 Change PWB-MC. 5 Change PU1.

• Code: C3851
• Description: Heating Roller abnormally low temperature
  • No zero cross signal is detected even with the lapse of 1 sec. or more during a standby state, print cycle, or Power Save. • A temperature of 120 °C or less of the Heating Roller is detected for 1 sec. or more during a standby state. • A temperature of 120 °C or less of the Heating Roller is detected for 1 sec. or more during a print cycle. • A temperature of 70 °C or less of the Heating Roller is detected for 1 sec. or more during Power Save.
• Remedy: 1 Check the Fusing Unit for correct installation (whether it is secured in position). 2 Check the Fusing Unit, PWB-MC and PU1 for proper connection and correct or change as necessary. 3 Change Fusing Unit. 4 Change PWB-MC. 5 Change PU1.

• Code: C3852
• Description: Fusing Pressure Roller abnormally low temperature
  • . A temperature of 80 °C or less of the Fusing Pressure Roller is detected for 1 sec. or more during a standby state. • A temperature of 80 °C or less of the Fusing Pressure Roller is detected for 1 sec. or more during a print cycle. • A temperature of 80 °C or less of the Fusing Pressure Roller is detected for 1 sec. or more during Power Save.
• Remedy: 1 Check the Fusing Unit for correct installation (whether it is secured in position). 2 Check the Fusing Unit, PWB-MC and PU1 for proper connection and correct or change as necessary. 3 Change Fusing Unit. 4 Change PWB-MC. 5 Change PU1.

• Code: C4705
• Description: Printer Time Out
  • No image data is output from the MFP Control Board (PWB-MFPC).
• Remedy: 1 Select Service Mode - State Confirmation - Memory/HDD Adj. - Memory Bus Check - Memory-PRT. 2 Check the connectors on PWB-MFPC for proper connection and correct as necessary. 3 Change PWB-MFPC.

• Code: C4761
• Description: Compression hardware timeout
  • The hardware involved with the compression function offered by the MFP Control Board (PWBMFPC) does not respond.
• Remedy: Change PWB-MFPC