• Code: C-2821
• Description: The toner supply prohibition status is not released 1. Even though the TCR sensor (TCRS) output increases, the number of the toner supply prohibition status continuity is detected 30 times, and more than 2.5V of the TCRS output value is detected.
• Causes: Developing unit TCR sensor (TCRS) Printer control board (PRCB)
• Remedy: 1 Check the developing section, and clean/repair it if there is any dirt or abnormality. - 2 Check the connector connection and the wiring between PRCB and TCRS, and repair it if any abnormality. - 3 Replacing the developing unit - 4 Replace PRCB.

• Code: C-2822
• Description: The toner supply prohibition status is not released 2. The number of the toner supply prohibition status continuity becomes 100 times.
• Causes: Developing unit TCR sensor (TCRS) Printer control board (PRCB)
• Remedy: 1 Check the developing section, and clean/repair it if there is any dirt or abnormality. - 2 Check the connector connection and the wiring between PRCB and TCRS, and repair it if any abnormality. - 3 Replacing the developing unit - 4 Replace PRCB.

• Code: C-3102
• Description: Fusing pressure release motor (M33) operation time abnormality 1. When M33 moves from the release position to the pressure position, the fusing pressure home sensor (PS58) does not turn ON within a specified period of time.
• Causes: Fusing pressure home sensor (PS58) Fusing pressure release motor (M33) Printer control board (PRCB)
• Remedy: 1 Check the fusing pressure release section, and clean/repair it if any abnormality. - 2 Check the connector connection and the wiring between PRCB and motor/sensor, and repair it if any abnormality. - 3 Check I/O and the operation of the sensor, and repair/replace it if any abnormality. 13-F 4 Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. 15-F 5 Replace PS58. - 6 Replace M33. - 7 Replace PRCB.

• Code: C-3103
• Description: Fusing pressure release motor (M33) operation time abnormality 2. The fusing pressure home sensor (PS58) ON is not detected within a specified period of time after the main power turns ON. When M33 moves from the pressure position to the release position, PS58 does not turn ON within a specified period of time.
• Causes: Fusing pressure home sensor (PS58) Fusing pressure release motor (M33) Printer control board (PRCB)
• Remedy: 1 Check the fusing pressure release section, and clean/repair it if any abnormality. - 2 Check the connector connection and the wiring between PRCB and motor/sensor, and repair it if any abnormality. - 3 Check I/O and the operation of the sensor, and repair/replace it if any abnormality. 13-F 4 Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. 15-F 5 Replace PS58. - 6 Replace M33. - 7 Replace PRCB.

• Code: C-3201
• Description: Drum motor (M24) power abnormality + 24V power abnormality. When M24 turns ON, error detection signals (blowout of ICP and the 24V cut off) are detected.
• Causes: DC power supply /2 (DCPS /2) AC drive board (ACDB)
• Remedy: 1 Check the connector connection and the wiring between ACDB and DCPS /2, and repair it if any abnormality. - 2 Replace DCPS /2. - 3 Replace ACDB.

• Code: C-3202
• Description: Web motor (M24) power abnormality. An error detection signal (blowout of ICP) is detected when M24 turns ON. At this time, an error detection signal (24V cut off) is not detected.
• Causes: Web motor (M24) AC drive board (ACDB)
• Remedy: 1 Check the connector connection and the wiring between ACDB and the motor, and repair it if any abnormality. - 2 Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. 15-F 3 Replace M24 and ACDB at a time.

• Code: C-3501
• Description: Thermistor /1 (TH1) high temperature abnormality (software). TH1 detects a temperature of 244°C or above 10 times in a period of 0.5second.
• Causes: Fusing temperature sensor /1 (TH1) Fusing heater lamp /1 (L1) Fusing heater lamp /2 (L2) Printer control board (PRCB) AC drive board (ACDB)
• Remedy: 1 Check the fusing rollers /Up (L1 and L2), and clean/repair them if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L1/L2, and repair it if any abnormality. - 4 Check TH to see the installed position or distance to the fusing roller /Up, and adjust/ replace it if any abnormality. 14-F 5 Replace TH1. - 6 Replace L1 and L2. - 7 Replace PRCB. - 8 Replace ACDB. - *After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. If DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.

• Code: C-3502
• Description: Thermistor /3 (TH3) high temperature abnormality (software). TH3 detects a temperature of 230°C or above 5 times in a period of 1second.
• Causes: Fusing temperature sensor /3 (TH3) Fusing heater lamp /3 (L3) Printer control board (PRCB) AC drive board (ACDB)
• Remedy: 1 Check the fusing heating roller /Up (L3), and repair it if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L3, and repair it if any abnormality. - 4 Check TH3 installed condition or the distance between TH3 and the fusing roller /Up, and adjust/replace it if any abnormality. 13-F 5 Replace TH3. - 6 Replace L3. - 7 Replace PRCB. - 8 Replace ACDB. - * After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.