• Code: 7301
• Description: Intermediate toner hopper toner feed error
  • Black toner is not fed in the intermediate toner hopper in the black toner developer from the black toner container within the predetermined period.
• Causes: Defective engine controller PWB (KP-801). Defective black toner empty sensor PWB (KP- 895, KP-896). Defective black toner feed clutch. Poor contact of the black toner feed clutch. Defective feed drive PWB (KP- 822). Defective harness (S02547) between engine controller PWB (KP-801) and black developer, or poor contact of the connector terminals. Defective harness (S02563) between engine controller PWB (KP-801) and feed drive PWB (KP-822), or poor contact of the connector terminals.
• Remedy: Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).
  Defective black toner empty sensor PWB (KP- 895, KP-896). Replace the black toner empty sensor PWB (KP-895, KP-896).
  Defective black toner feed clutch. Replace the black toner feed clutch.
  Poor contact of the black toner feed clutch. Check the insertion of connectors.
  Defective feed drive PWB (KP- 822). Replace the feed drive PWB (KP-822).
  Defective harness (S02547) between engine controller PWB (KP-801) and black developer, or poor contact of the connector terminals. Check the continuity of the harness (S02547). Check the insertion of connectors.
  Defective harness (S02563) between engine controller PWB (KP-801) and feed drive PWB (KP-822), or poor contact of the connector terminals. Check the continuity of the harness (S02563). Check the insertion of connectors.

• Code: 7700
• Description: Offset drum sensor detection error
  • A pulse signal is not entered to ASIC (U7) on the engine controller PWB from the offset drum sensor.
• Causes: Defective drum PWB (KP-813). Defective engine controller PWB (KP-801). Defective harness (S02575) between engine controller PWB (KP-801) and drum unit, or poor contact of the connector terminals.
• Remedy: Defective drum PWB (KP-813). Replace the drum unit.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).
  Defective harness (S02575) between engine controller PWB (KP-801) and drum unit, or poor contact of the connector terminals. Check the continuity of the harness (S02575). Check the insertion of connectors.

• Code: 7710
• Description: Offset drum sensor detection error
  • A pulse signal is not entered to ASIC (U7) on the engine controller PWB from the offset drum sensor.
• Causes: Defective drum PWB (KP-813). Defective engine controller PWB (KP-801). Defective harness (S02575) between engine controller PWB (KP-801) and drum unit, or poor contact of the connector terminals.
• Remedy: Defective drum PWB (KP-813). Replace the drum unit.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).
  Defective harness (S02575) between engine controller PWB (KP-801) and drum unit, or poor contact of the connector terminals. Check the continuity of the harness (S02575). Check the insertion of connectors.

• Code: 8010
• Description: Feeder motor error (Document finisher)
  • Feeder motor of the document finisher DF-31 does not operate normally.m the
• Causes: Defective feeder motor of the document finisher DF-31. Defective engine controller PWB (KP-801).
• Remedy: Defective feeder motor of the document finisher DF-31. Replace feeder motor of the document finisher DF-31. See document finisher DF- 31’s service manual.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).

• Code: 8020
• Description: Paper ejection motor error (Document finisher)
  • Paper ejection motor of the document finisher DF-31 does not operate normally. PWB
• Causes: Defective paper ejection motor of the document finisher DF-31. Defective engine controller PWB (KP-801).
• Remedy: Defective paper ejection motor of the document finisher DF-31. Replace paper ejection motor of the document finisher DF-31. See document finisher DF-31’s service manual.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).

• Code: 8140
• Description: Tray elevation motor error (Document finisher)
  • Tray elevation motor of the document finisher DF-31 does not operate normally.
• Causes: Defective tray elevation motor of the document finisher DF-31. Defective engine controller PWB (KP-801).
• Remedy: Defective tray elevation motor of the document finisher DF-31. Replace tray elevation motor of the document finisher DF-31. See document finisher DF-31’s service manual.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).

• Code: 8170
• Description: Matching board movement motor error (Document finisher)
  • Matching board movement motor of the document finisher DF-31 does not operate normally.
• Causes: Defective matching board movement motor of the document finisher DF-31. Defective engine controller PWB (KP-801).
• Remedy: Defective matching board movement motor of the document finisher DF-31. Replace matching board movement motor of the document finisher DF-31. See document finisher DF-31’s service manual.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).

• Code: 8210
• Description: Staple movement motor error (Document finisher)
  • Staple movement motor of the document finisher DF-31 does not operate normally.
• Causes: Defective staple movement motor of the document finisher DF-31. Defective engine controller PWB (KP-801).
• Remedy: Defective staple movement motor of the document finisher DF-31. Replace staple movement motor of the document finisher DF-31. See document finisher DF-31’s service manual.
  Defective engine controller PWB (KP-801). Replace the engine controller PWB (KP- 801).