• Code: C3304
• Description: Fusing cooling fan motor/ 2 failure to turn
  • The fan motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Remedy: 1 Check the FM4 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM4 operation check PRCB CN11PRCB-6 (REM) PRCB CN11PRCB-8 (LOCK) K-3. 4 Change FM4. 5 Change PRCB.

• Code: C3305
• Description: Fusing cooling fan motor/ 3 failure to turn
  • The fan motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
• Remedy: 1 Check the FM5 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM5 operation check PRCB CN11PRCB-9 (REM) PRCB CN11PRCB-11 (LOCK) K-3. 4 Change FM5. 5 Change PRCB.

• Code: C3423
• Description: Fusing heaters trouble (pressurizing side)
  • After warm-up operation starts, the fusing pressure roller thermistor does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• 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, MFPB 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: C3424
• Description: Fusing heaters trouble (soaking side)
  • After warm-up operation starts, the soaking roller thermistor does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• 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, MFPB 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: C3425
• Description: Fusing heaters trouble (NC sensor)
  • After warm-up operation starts, the NC sensor does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• 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, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3461
• Description: Release new fusing unit
  • A new installation is not detected when a new fusing Unit is installed.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, PRCB for proper connection and correct or change as necessary. 3 Reinstall fusing unit. 4 Change fusing unit. 5 Change PRCB.

• Code: C3721
• Description: Fusing abnormally high temperature detection (Center of the heating roller)
  • The heating roller thermistor/3 continues to detect a temperature higher than a predetermined one for a predetermined period of time. • The signal is turned ON to activate the hard ratchet in the middle of the heating side.
• 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, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.

• Code: C3722
• Description: Fusing abnormally high temperature detection (Edge of the heating roller)
  • The heating roller thermistor/2 continues to detect a temperature higher than a predetermined one for a predetermined period of time. • The signal is turned ON to activate the hard ratchet at the edges of the heating side.
• 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, MFPB and REDB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change IHPU. 6 Change PRCB. 7 Change REDB.