• Code: 0580
• Description: Paper feeder PF-60 [bottom] with wrong firmware version is installed
  The code that identifies the firmware version was out of range.
• Causes: Wrong firmware version is used on the main board in paper feeder PF-60.

• Code: 1200
• Description: Optional duplexer DU-61 side registration error
  Side registration home position error of optional duplexer DU-61.
• Causes: Defective gate array U7 on the engine board (KP-1081). Improper installation between printer and optional duplexer, or each optional unit. Defective harness (S03022) between engine board and optional unit interface connector. Improper connector insertion. Defective optional duplexer DU-61.

• Code: 2000
• Description: Main motor error
  The main motor is overloaded
• Causes: Overcurrent in the main motor circuitry due to an excessive torque. Connector insertion error. Defective gate array U7 on the engine board (KP- 1081). Defective harness between engine board and engine relay board (KP- 1071). Defective harness between engine relay board (KP- 1071) and main motor.

• Code: 2600
• Description: Optional bulk paper feeder PF-8E motor error
  Motor error in the optional bulk paper feeder PF-8E.
• Causes: Defective harness (S03022) between engine board and optional unit interface connector. Defective optional bulk paper feeder.

• Code: 2610
• Description: Optional paper feeder PF-60 (Top) paper feed motor error
  Paper feed motor error in the top optional paper feederpap
• Causes: Defective gate array U7 on the engine board (KP- 1081). Defective harness (S03022) between engine board and optional unit interface connector. Defective paper feeder PF-60.

• Code: 2620
• Description: Optional paper feeder PF-60 (Middle) paper feed motor error
  Paper feed motor error in the middle optional paper feeder.D
• Causes: Defective gate array U7 on the engine board (KP- 1081). Defective harness (S03022) between engine board and optional unit interface connector. Defective optional paper feeder PF- 60.

• Code: 2630
• Description: Optional paper feeder PF-60 (bottom) paper feed motor error
  Paper feed motor error in the bottom optional paper feeder.D
• Causes: Defective gate array U7 on the engine board (KP- 1081). Defective harness (S03022) between engine board and optional unit interface connector. Defective paper feeder PF-60.

• Code: 4000
• Description: Laser scanner unit (Polygon motor) error
  POLRDY* does not go low within 20 seconds after POLON* goes low (When starting) or within 16 seconds after REGPAP signal goes high (during printing).
• Causes: Defective gate array U7 on the engine board. Defective polygon motor. Improper connector insertion. Defective harness between laser scanner unit and engine board.