• Code: 475
• Description: ITB position error 2 The belt overrun front sensor detects an ITB position error.
• Causes: • Belt overrun sensor: front defective • ITB abnormal or worn • Belt centering roller out of home position • ITB motor rotation sensor defective • Belt centering roller sensor defective • Belt centering roller motor defective
• Remedy: 1. Replace the belt overrun sensor: front. 2. Reinstall the ITB in the opposite direction or replace it. 3. Execute "Clearing SC471/475/476". 4. Replace the ITB motor rotation sensor defective. 5. Replace the belt centering roller sensor. 6. Replace the belt centering roller motor.

• Code: 476
• Description: ITB position error 3 The belt overrun rear sensor detects an ITB position error.
• Causes: • Belt overrun sensor: rear defective • ITB abnormal or worn • Belt centering roller out of home position • ITB motor rotation sensor defective • Belt centering roller sensor defective • Belt centering roller motor defective
• Remedy: 1. Replace the belt overrun sensor: rear. 2. Reinstall the ITB in the opposite direction or replace it. 3. Execute "Clearing SC471/475/476". 4. Replace the ITB motor rotation sensor defective. 5. Replace the belt centering roller sensor. 6. Replace the belt centering roller motor.

• Code: 477
• Description: PTR motor lock error The machine detects an error of the PTR motor while it is rotating.
• Causes: • PTR cleaning blade flipped or overloaded • PTR drive overloaded • PTR motor defective
• Remedy: 1. Check or replace the PTR unit. 2. Check or replace the PTR motor

• Code: 479
• Description: PTR position error The PTR lift sensor detects an error of the PTR lift motor while it is rotating.
• Causes: • PTR lift sensor detective • PTR lift motor defective
• Remedy: 1. Check or replace the PTR lift sensor. 2. Check or replace the PTR lift motor.

• Code: 480
• Description: ITB feed-back counter error The ITB feed-back sensor detects an error of the ITB feed-back encoder counter.
• Causes: • Overload to the ITB drive motor (ITB cleaning blade rolled in) or motor defective • Defective belt speed sensor
• Remedy: This SC does not affect the machine's operation. This is for analytical use only.

• Code: 485
• Description: Waste toner transport motor 1: Lock error The machine detects an error of the waste toner transport motor 1 while it is rotating.
• Causes: • Harness loose or disconnected • Waste toner transport motor 1 defective • Blocking in the toner collection tube to the waste toner bottle.
• Remedy: 1. Check the harness connection. 2. Replace the waste toner transport motor 1. 3. If necessary, unblock the toner transport path.

• Code: 486
• Description: Waste toner transport motor 2: Lock error The machine detects an error of the waste toner transport motor 2 while it is rotating.
• Causes: • Harness loose or disconnected • Blocking in the toner collection tube to the waste toner bottle. • Waste toner transport motor 2 defective
• Remedy: 1. Check the harness connection. 2. Replace the waste toner transport motor 2.

• Code: 489
• Description: Waste toner transport motor 2 sensor error The machine detects an error of the waste toner transport motor 2.
• Causes: • Blocking in the toner collection tube to the waste toner bottle. • Waste toner transport motor 2 defective • Waste toner transport motor 2 sensor defective
• Remedy: 1. Check or replace the waster toner bottle. 2. Replace the waster toner transport motor 2 3. Replace the waster toner transport motor 2 sensor