• Code: SC633
• 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: SC634
• Description: Key/card counter device error 3
  The backup battery of the counter device RAM is low.
• Causes: • Replace the RAM backup battery.

• Code: SC635
• 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: SC670
• 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: SC672
• 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: SC818
• Description: Watchdog error
  While the system program is running, a bus hold or interrupt program goes into an endless loop, preventing any other programs from executing.
• Causes: • System program defective; switch off/on, or change the controller firmware if the problem cannot be solved • Controller board defective • Replace peripheral device

• Code: SC819
• Description: Fatal kernel error
  Due to a control error, a RAM overflow occurred during system processing. One of the following messages was displayed on the operation panel.
• Causes: • System program defective • Controller board defective • Optional board defective • Replace controller firmware

• Code: SC820
• Description: Sellf-diagnostic error 1: CPU
  An unexpected error occurred, or the boot monitor program or self-diagnostic program generated an interrupt. In either case, this is a fatal error.
• Causes: • Replace the controller board • Update (upload again) all firmware modules to restore the boot program and the self-diagnostics.