• Code: SC494
• Description: Toner Transport Unit Error
  One of the following has occurred during toner transport from the toner bank to the toner supply cylinder:
  • An obstruction (clumped toner, other foreign material) is blocking the toner supply coil
  • The coil torque limiter is broken
  • Toner bottle end sensor is broken
• Causes: • Cycle the machine off/on
  • Clean the toner transport coil, tubing, toner supply clutch, torque limiter
  • Defective toner supply coil
  • Defective toner supply tube
  • Defective toner supply clutch
  • Defective torque limiter

• Code: SC495
• Description: Toner Bottle Unit Error
  During toner transport from the toner supply cylinder to the toner hopper, the toner hopper sensor cannot detect toner even after the toner supply pump switches on for 2 s and switches off 10 times during copying.
• Causes: • Toner supply pump motor harness, connector loose, broken, defective
  • Toner supply pump motor defective • Blockage in the toner supply tube
  • Toner supply tube disconnected
  • Blockage in the toner supply cylinder
  • Toner-end sensor in the toner supply cylinder defective
  • Agitator in the toner supply cylinder defective
  • Toner supply cylinder agitator motor defective

• Code: SC496
• Description: Toner Collection Bottle Error
  The toner collection bottle sensor set sensor remained off for 3 s.
• Causes: • Used toner collection bottle is set incorrectly
  • Used toner collection bottle harness, connector loose, broken, defective

• Code: SC497
• Description: Development Unit Toner Suction Bottle Error
  During machine operation, the development unit toner suction bottle set sensor goes off for 3 s.
• Causes: • Toner suction bottle is not installed
  • Toner suction bottle set sensor connector is loose, broken, defective

• Code: SC501
• Description: 1st Tray Lift Mechanism
  One of the following conditions is detected in the 1st tray (tandem tray) of the main machine:
  • The 1st tray lift sensor is not activated for 10 s after the 1st tray lift motor turned on.
  • Upper limit is not detected within 10 s while the paper tray is lifting during paper feed.
  • The 1st tray lift sensor is already activated when the 1st tray is placed in the machine.
• Causes: • Poor 1st tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • 1st pick-up solenoid connector is loose
  • 1st pick-up solenoid is blocked by an obstruction

• Code: SC502
• Description: 2nd Tray Lift Malfunction
  One of the following conditions is detected in the 2nd tray of the main machine:
  • The 2nd tray lift sensor is not activated for 10 s after the 2nd tray lift motor turned on.
  • Upper limit is not detected within 10 s while the paper tray is lifting during paper feed.
  • The 2nd tray lift sensor is already activated when the 2nd tray is placed in the machine
• Causes: • Poor 2nd tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • 2nd pick-up solenoid connector is loose
  • 2nd pick-up solenoid is blocked by an obstruction

• Code: SC503
• Description: 3rd Tray Lift Malfunction
  One of the following conditions is detected in the 3rd tray of the main machine:
  • The 3rd tray lift sensor is not activated for 10 s after the 3rd tray lift motor turned on.
  • Upper limit is not detected within 10 s while the paper tray is lifting during paper feed.
  • The 3rd tray lift sensor is already activated when the 3rd tray is placed in the machine
• Causes: • Poor 3rd tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • 3rd pick-up solenoid connector is loose
  • 3rd pick-up solenoid is blocked by an obstruction

• Code: SC504
• Description: 4th Tray (LCT Tray 1) Lift MalfunctionOne of the following conditions is detected in the 4th tray:
  • The LCT 1st lift sensor is not activated for 10 s after the LCT 1st tray lift motor turned on.
  • Upper limit is not detected within 10 s while the paper tray is lifting during paper feed.
  • The LCT 1st lift sensor is already activated when the LCT 1st tray is placed in the machine.
• Causes: • Poor LCT 1st tray lift motor connection
  • Remaining paper or another obstruction has stopped the tray and motor
  • LCT 1st pick-up solenoid connector is loose
  • LCT 1st pick-up solenoid is blocked by an obstruction