• Code: 633
• Description: Key/card counter device error 2
  During communication with the device, the BCU received a break (Low) signal.
• Causes: • The serial line from the device to the copier is unstable, disconnected, or defective.

• Code: 634
• Description: Key/card counter device error 3
  The backup battery of the counter device RAM is low.
• Causes: • Replace the RAM backup battery.

• Code: 635
• Description: Key/card counter device error 4
  After installation of the device a message alerts user to a battery voltage abnormal error.
• Causes: • Device control board defective • Device control board backup battery defective

• Code: 670
• Description: Engine startup error
  The BCU failed to respond with the prescribed time when the machine was turned on.
• Causes: • Connections between BCU and controller board are loose, disconnected, or damaged • Replace the BCU • Replace the controller board

• Code: 672
• Description: Controller startup error
  • After power on, the line between the controller and the operation panel did not open for normal operation. • After normal startup, communication with the controller stopped.
• Causes: • Controller stalled • Controller installed incorrectly • Controller board defective • Operation panel harness disconnected or defective

• Code: 692
• Description: GAVD block I2C bus error
  The I2C bus is defective.
• Causes: • Replace the BICU.

• Code: 700
• Description: ARDF original pick-up malfunction
  After the pick-up motor is turned on, the original stopper HP sensor is not detected.
• Causes: Original stopper HP sensor (output abnormal) Pick-up motor defective (not rotating) Timing belt out of position • ADF main board defective

• Code: 701
• Description: ARDF original pick-up/paper lift mechanism malfunction
  The original pick-up HP sensor does not activate three times consecutively after the pick-up motor has turned on.
• Causes: • Original pick-up HP sensor defective. • Pick-up motor defective • ADF main board defective