• Code: 1630
• Description: PF heater 2 low temperature error (paper feeder 2)
  An external temperature higher than + 5„aC/+ 9„aF is not detected when one minute elapses after PF heater 2 is turned on.
• Causes: Defective connector cable or poor contact in the connector. PF thermistor 2 installed incorrectly. Defective PF thermistor 2. Broken PF heater 2. Defective PF heater PWB or PF main PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 2 and PF heater PWB (YC2) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 2 and PF main PWB (YC115)
  PF thermistor 2 installed incorrectly. Check the installation of the PF thermistor 2.
  Defective PF thermistor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
  Broken PF heater 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
  Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).

• Code: 1640
• Description: PF heater 1 low temperature error (paper feeder 3)
  An external temperature higher than + 5C/+ 9F is not detected when one minute elapses after PF heater 1 is turned on.
• Causes: Defective connector cable or poor contact in the connector. PF thermistor 1 installed incorrectly. Defective PF thermistor 1. Broken PF heater 1. Defective PF heater PWB or PF main PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 1 and PF heater PWB (YC1) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 1 and PF main PWB (YC114)
  PF thermistor 1 installed incorrectly. Check the installation of the PF thermistor 1.
  Defective PF thermistor 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
  Broken PF heater 1. Replace the top heater unit (Refer to the service manual for the paper feeder).
  Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).

• Code: 1650
• Description: PF heater 2 low temperature error (paper feeder 3)
  An external temperature higher than + 5C/+ 9F is not detected when one minute elapses after PF heater 2 is turned on.
• Causes: Defective connector cable or poor contact in the connector. PF thermistor 2 installed incorrectly. Defective PF thermistor 2. Broken PF heater 2. Defective PF heater PWB or PF main PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF heater 2 and PF heater PWB (YC2) PF heater PWB (YC3) and PF main PWB (YC113) PF thermistor 2 and PF main PWB (YC115)
  PF thermistor 2 installed incorrectly. Check the installation of the PF thermistor 2.
  Defective PF thermistor 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
  Broken PF heater 2. Replace the side heater unit (Refer to the service manual for the paper feeder).
  Defective PF heater PWB or PF main PWB. Replace the PF heater PWB or PF main PWB (Refer to the service manual for the paper feeder).

• Code: 1800
• Description: Paper feeder communication error
  Communication error between engine PWB and optional paper feeder.
• Causes: Improper installation paper feeder. Defective connector cable or poor contact in the connector. Defective engine PWB. Defective PF main PWB.
• Remedy: Improper installation paper feeder. Follow installation instruction carefully again.
  Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF main PWB (YC3) and engine PWB (YC33)
  Defective engine PWB. Replace the engine PWB and check for correct operation.
  Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).

• Code: 2100
• Description: Developing motor error
  The developing motor ready input is not given for 5 s during the main motor is ON.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the developing motor. Defective developing motor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developing motor and engine PWB (YC14)
  Defective drive transmission system of the developing motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective developing motor. Replace the developing motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2200
• Description: Drum motor error
  The drum motor ready input is not given for 5 s during the drum motor is ON.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the drum motor. Defective drum motor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum motor and engine PWB (YC13)
  Defective drive transmission system of the drum motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective drum motor. Replace the drum motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2330
• Description: Fuser pressure release motor error
  When the fuser pressure release motor is driven, the motor over-current detection signal is detected continuously for 8 times (800 ms) at 100 ms intervals.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the fuser pressure release motor. Defective fuser pressure release motor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser pressure release motor and engine PWB (YC38)
  Defective drive transmission system of the fuser pressure release motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective fuser pressure release motor. Replace the fuser pressure release motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2340
• Description: Fuser pressure release motor time-out error
  When the fuser pressure release motor is driven, the envelope switch (EVSW) is not detectable for 6 s.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of the fuser pressure release motor. Defective fuser pressure release motor.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser pressure release motor and engine PWB (YC38)
  Defective drive transmission system of the fuser pressure release motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective fuser pressure release motor. Replace the fuser pressure release motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.