• Code: 910 ... 914
• Display: Service Call 910: Error to 914: Error
• Description: GDDC Error
  910: Tray1 GDDC Error 911: Tray2 GDDC Error 912: Tray3 GDDC Error 913: Tray4 GDDC Error 914: Tray3 GDDC Error
• Remedy: Check to confirm that the tray is mounted correctly. Replace the geared motor of the tray.

• Code: 917
• Display: Service Call 917
• Description: Belt Slit Sensor Error
• Remedy: The belt is not running properly. Does the error message still appear after rebooting?
  Check to confirm that the belt is mounted correctly. Replace the belt.

• Code: 918
• Display: Service Call 918
• Description: Duplex FAN0 Alarm Detection
• Remedy: appear after rebooting? Error of the fan in the duplex unit Does the error still occur after rebooting?
  Check to confirm that the duplex unit is mounted correctly. Check the connection of the fan. Replace the fan.

• Code: 919
• Display: Service Call 919
• Description: Duplex 24V Abnormal Current Detection
• Remedy: 24 V of power is not supplied to the duplex unit properly. Does the error still occur after rebooting?
  Check to confirm that the duplex unit is mounted correctly. Check the connection of the fan. Replace the fan.

• Code: 920
• Display: Service Call 920
• Description: Yellow Image Drum Lock Error
• Remedy: The Y ID unit is not operating properly. Does the error message still appear after rebooting?
  Check to confirm that the Y ID unit is in position. Replace the Y ID unit. Replace the Y ID motor.

• Code: 921
• Display: Service Call 921
• Description: Magenta Image Drum Lock Error
• Remedy: The M ID unit is not operating properly. Does the error message still appear after rebooting?
  Check to confirm that the M ID unit is in position. Replace the M ID unit. Replace the M ID motor.

• Code: 922
• Display: Service Call 922
• Description: Cyan Image Drum Lock Error
• Remedy: The C ID unit is not operating properly. Does the error message still appear after rebooting?
  Check to confirm that the C ID unit is in position. Replace the C ID unit. Replace the C ID motor.

• Code: 923
• Display: Service Call 923
• Description: Black Image Drum Lock Error
• Remedy: The K ID unit is not operating properly. Does the error message still appear after rebooting?
  Check to confirm that the K ID unit is in position. Replace the K ID unit. Replace the K ID motor.