• Code: C3102
• Description: Heating roller failure to turn. During any state other than printing operation , the hard latch signal from one or both of the heating roller rotation latch detection 1 and the heating roller rotation latch detection 2 is turned ON.
• Causes: • Heating roller rotation sensor (PS56) • Fusing motor (M30) • Printer control board (PRCB) • Fusing unit
• Remedy: 1 Check the fusing unit for proper installation and correct as necessary. 2 Check the connector between M30-PRCB CN30 for proper connection and correct as necessary. 3 Check the connector of M30 for proper drive coupling and correct as necessary. 4 PS56 I/O check, sensor check 5 M30 operation check PRCB CN30-4 (REM) PRCB CN30-7 (LOCK) 4-K 6 PRCB ICP15 conduction check 7 Replace M30 8 Replace the fusing unit 9 Replace PRCB

• Code: C3201
• Description: Fusing motor’s failure to turn. The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Causes: • Fusing motor (M30) • Printer control board (PRCB)
• Remedy: 1 Check the connector between M30-PRCB CN30for proper connection and correct as necessary. 2 Check the loading status of the fusing unit drive, and correct the error as necessary. 3 M30 operation check PRCB CN30-4 (REM) PRCB CN30-7 (LOCK) 4-K 4 Replace M30 5 PRCB ICP9 conduction check 6 Replace PRCB

• Code: C3202
• Description: Fusing motor’s turning at abnormal timing. The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.
• Causes: • Fusing motor (M30) • Printer control board (PRCB)
• Remedy: 1 Check the connector between M30-PRCB CN30for proper connection and correct as necessary. 2 Check the loading status of the fusing unit drive, and correct the error as necessary. 3 M30 operation check PRCB CN30-4 (REM) PRCB CN30-7 (LOCK) 4-K 4 Replace M30 5 PRCB ICP9 conduction check 6 Replace PRCB

• Code: C3303
• Description: Paper cooling fan/out’s failure to turn The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
• Causes: • Paper cooling fan/out (FM2) • Printer control board (PRCB)
• Remedy: 1 Check the connector between FM2-relay CN323- PRCB CN1 for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM2 operation check PRCB CN1-3 (DRIVE) PRCB CN1-5 (LOCK) 7-K 4 Replace FM2 5 Replace PRCB

• Code: C3305
• Description: Switchback paper cooling fan/1’s failure to turn The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
• Causes: • Switchback paper cooling fan/1 (FM4) • Paper feed/transport drive board (PFTDB)
• Remedy: 1 Check the connector between FM4-relay CN282Arelay CN280-relay CN279-relay CN271B-PFTDB CN10 for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM4 operation check PFTDB CN10-11 (LOCK) 6-P 4 Replace FM4 5 PFTDB ICP9 conduction check 6 Replace PFTDB

• Code: C3425
• Description: Fusing warm-up trouble After warm-up operation starts, the heating roller temperature sensor/4 does not detect a temperature as high as a predetermined one though a predetermined period of time has elapsed.
• Causes: • Fusing unit • Heating roller temperature sensor/4 (TEMS4) • IH power supply (IHPU) • Noise filter (NF1) • 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, NF1 and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit 5 Replace IHPU 6 Replace PRCB 7 Replace NF1

• Code: C3722
• Description: Fusing abnormally high temperature detection (Edge 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 hard protection signal at the edges of the heating side remains OFF for a predetermined continuous period of time.
• Causes: • Fusing unit • Heating roller thermistor/3 (TH3) • IH power supply (IHPU) • Noise filter (NF1) • 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, NF1 and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit 5 Replace IHPU 6 Replace PRCB 7 Replace NF1

• Code: C3725
• Description: Fusing abnormally high temperature detection (Center of the heating roller) The heating roller temperature sensor/4 continues to detect a temperature higher than a predetermined one for a predetermined period of time.
• Causes: • Fusing unit • Heating roller temperature sensor/4 (TEMS4) • IH power supply (IHPU) • Noise filter (NF1) • 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, NF1 and PRCB for proper connection and correct or change as necessary. 4 Replace the fusing unit 5 Replace IHPU 6 Replace PRCB 7 Replace NF1