• Code: SC505
• Description: 5th Tray (LCT Tray 2) Lift Malfunction
  One of the following conditions is detected in the 5th tray:
  • The LCT 2nd lift sensor is not activated for 10 s after the LCT 2nd tray lift motor turned on.
  • Upper limit is not detected within 10 s while the paper tray is lifting during paper feed.
  • The LCT 2nd lift sensor is already activated when the LCT 2nd tray is placed in the machine.
• Causes: • Poor LCT 2nd tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • LCT 2nd pick-up solenoid connector is loose
  • LCT 2nd pick-up solenoid is blocked by an obstruction

• Code: SC506
• Description: 6th Tray (LCT Tray 3) Lift Malfunction
  One of the following conditions is detected in the 6th tray.
  • The LCT 3rd lift sensor is not activated for 20 s after the LCT 3rd tray lift motor turned on.
  • Upper limit is not detected within 20 s while the paper tray is lifting during paper feed.
  • The LCT 3rd lift sensor is already activated when the LCT 3rd tray is placed in the machine.
• Causes: • Poor LCT 3rd tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • LCT 3rd pick-up solenoid connector is loose
  • LCT 3rd pick-up solenoid is blocked by an obstruction

• Code: SC507
• Description: 7th Tray (Bypass Tray) Lift Mechanism
  One of the following conditions is detected in the optional bypass tray.
  • The bypass tray lift sensor is not activated for 10 s after the tray lift motor turned on.
  • Upper limit is not detected within 10 s while the paper tray is lifting during paper feed.
  • The bypass tray lift sensor is already activated paper is placed in the 7th tray.
• Causes: • Poor bypass tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • Bypass tray pick-up solenoid connector is loose
  • Bypass tray pick-up solenoid is blocked by an obstruction

• Code: SC529
• Description: Exit Junction Gate HP Sensor Error
  The exit junction gate did not return to its home position.
• Causes: • Cycle the machine off/on

• Code: SC531
• Description: Fusing Motor Lock
  A fusing motor lock signal is detected for more than 2 s during operation due to an electrical overload in the motor driver board.
• Causes: • Motor driver board defective. Replace motor.

• Code: SC541
• Description: Fusing Thermister Open
  The fusing temperature detected by the thermistor was below 7°C for 15 s.
• Causes: • Fusing thermistor defective or out of position
  • Poor thermistor terminal connection

• Code: SC542
• Description: Fusing Temperature Warm-up Error
  One of the following occurred:
  • B234/B235: Hot roller did not reach target operation temperature within 360 sec. after the machine was powered or 360 sec. minutes after the doors were closed.
  • B236: Hot roller did not reach target operation temperature within 465 sec. after the machine was powered or 465 sec. minutes after the doors were closed.
  • Fusing temperature rose only 5C toward the fusing temperature within 20 s after the machine was powered on, or after the doors were closed.
  • Fusing temperature rose only 5C toward the fusing temperature within 20 s after thermistor started monitoring hot roller temperature. (The thermistors starts monitoring 25 s after the hot roller starts rotating.)
• Causes: • Fusing lamp(s) disconnected
  • Thermistor out of position

• Code: SC543
• Description: Fusing Overheat Error 1: Software
  A fusing temperature of over 210°C is detected for 5 s by the fusing thermistor. This prevents the fusing lamps from switching on without a fusing lamp trigger signal.
• Causes: • AC drive board defective (TRIAC short)
  • BCU defective
  • BCU firmware defective