• Code: 3302
• Description: Paper cooling fan motor malfunction
  The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
• Causes: • Paper cooling fan motor (FM4) • Printer control board (PRCB)
• Remedy: 1 Check the connector between FM8-relay CN82-PRCB CN12 for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 FM4 operation check PRCB CN12-4 (OUT) PRCB CN12-6 (LOCK) 15-D 4 Replace FM4 - - 5 PRCB F2 conduction check - - 6 Replace PRCB

• Code: 3421
• Description: Fusing temperature increase malfunction (Main of the heating side)
  • Detected temperature of the fusing temperature sensor/1 (TEM1: main of the heating side) does not go up a given range of temperature even after a lapse of given period of time at warm up. • The warm-up is not completed even after the set period of time has elapsed after the warm-up is started.
• Causes: • Fusing unit • Fusing temperature sensor/1 (TEM1: main of the heating side) • DC power supply (DCPS) • 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 right door. - - 3 Check the fusing unit-PRCB CN15, DCPS CN2 for proper connection and correct as necessary. - - 4 Replace the fusing unit - - 5 Replace PRCB - - 6 Replace DCPS

• Code: 3426
• Description: Fusing temperature increase malfunction (Center of the heating side)
  • Detected temperature of the fusing temperature sensor/1 (TEM1: main of the heating side) does not go up a given range of temperature even after a lapse of given period of time at warm up. • The warm-up is not completed even after the set period of time has elapsed after the warm-up is started.
• Causes: • Fusing unit • Fusing temperature sensor/1 (TEM1: center of the heating side) • DC power supply (DCPS) • 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 right door. - - 3 Check the fusing unit-PRCB CN15, DCPS CN2 for proper connection and correct as necessary. - - 4 Replace the fusing unit - - 5 Replace PRCB - - 6 Replace DCPS

• Code: 3721
• Description: Fusing abnormally high temperature (Main of the heating side)
  Detected temperature of the fusing temperature sensor/1 (TEM1: main of the heating side) goes beyond a given temperature for a given period of time consecutively.
• Causes: • Fusing unit • Fusing temperature sensor/1 (TEM1: main of the heating side) • DC power supply (DCPS) • 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 right door. - - 3 Check the fusing unit-PRCB CN15, DCPS CN2 for proper connection and correct or change as necessary. - - 4 Replace the fusing unit - - 5 Replace DCPS - - 6 Replace PRCB

• Code: 3722
• Description: Fusing abnormally high temperature (Edge of the heating side)
  Detected temperature of the fusing temperature sensor/2 (TEM2) goes beyond a given temperature for a given period of time consecutively.
• Causes: • Fusing unit • Fusing temperature sensor/2 (TEM2) • DC power supply (DCPS) • 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 right door. - - 3 Check the fusing unit-PRCB CN15, DCPS CN2 for proper connection and correct or change as necessary. - - 4 Replace the fusing unit - - 5 Replace DCPS - - 6 Replace PRCB

• Code: 3726
• Description: Fusing abnormally high temperature (Center of the heating side)
  Detected temperature of the fusing temperature sensor/1 (TEM1: center of the heating side) goes beyond a given temperature for a given period of time consecutively.
• Causes: • Fusing unit • Fusing temperature sensor/1 (TEM1: center of the heating side) • DC power supply (DCPS) • 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 right door. - - 3 Check the fusing unit-PRCB CN15, DCPS CN2 for proper connection and correct or change as necessary. - - 4 Replace the fusing unit - - 5 Replace DCPS - - 6 Replace PRCB

• Code: 3821
• Description: Fusing abnormally low temperature (Main of the heating roller)
  The fusing temperature sensor/1 (TEM1: main of the heating side) continues to detect a temperature lower than a predetermined one for a predetermined period of time after warm-up is complete.
• Causes: • Fusing unit • Fusing temperature sensor/1 (TEM1: main of the heating side) • DC power supply (DCPS) • 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 -PRCB CN15, DCPS CN2 for proper connection and correct or change as necessary. - - 4 Replace the fusing unit - - 5 Replace DCPS - - 6 Replace PRCB

• Code: 3822
• Description: Fusing abnormally low temperature (Edge of the heating roller)
  The fusing temperature sensor/2 (TEM2) continues to detect a temperature lower than a predetermined one for a predetermined period of time after warm-up is complete.
• Causes: • Fusing unit • Fusing temperature sensor/2 (TEM2) • DC power supply (DCPS) • 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 -PRCB CN15, DCPS CN2 for proper connection and correct or change as necessary. - - 4 Replace the fusing unit - - 5 Replace DCPS - - 6 Replace PRCB