• Code: 252, 253
• Display: Contact the Service center. 252: Error 253: Error
• Description: Disk Security Mode Error
• Remedy: Install hard disk that has been connected while introducing the security kit.

• Code: 254
• Display: Contact the Service center. 254: Error
• Description: Disk Security Mode Error
• Remedy: Does the error display recur? Turn the power OFF/ON. Regenerate the encrypting mode. If it still does not improve the situation, change the CU board and encrypted hard disk.

• Code: 255
• Display: Contact the Service center. 255: Error
• Description: Disk Security Mode Error
• Remedy: Only change the encrypted board.

• Code: 256
• Display: Contact the Service center. 256: Error
• Description: Disk Security Mode Error
• Remedy: Install genuine hard disk.

• Code: 257
• Display: Contact the Service center. 257: Error
• Description: Disk Security Mode Error
• Remedy: Turn the power OFF/ON. Execute the re-formation of hard disk. If it still does not improve the situation, change the hard disk.

• Code: 901 ... 904
• Display: Reboot the printer. 901: Error - 904: Error Note)
• Description: Abnormal temperature of belt 901: Shortcircuit 902: Open circuit 903: High temperature 904: Low temperature
• Remedy: Is the cable from belt thermistor to the high voltage board connected normally? Does this error recur?
  Re-connect the cables normally. Turn on the power again. Replace the belt thermistsor.

• Code: 918
• Display: Reboot the printer. 918: Error
• Description: Duplex FAN Alarm Caution
• Remedy: Fan error inside the duplex unit. Does the error recur when the power is turned off once and back on? Does the error recur when the power is turned off once and back on?
  Check if the Duplex unit is installed normally or not. Check if the fans are installed normally or not. Replace the fan.

• Code: 923
• Display: Reboot the printer. 923: Error
• Description: Black image drum lock error
  The K ID does not rotate normally
• Remedy: The K ID does not rotate normally. Does the error display recur when the power is turned off once and back on?
  Check if the KID is installed normally or not. Replace the K ID unit. Replace the K ID motor.