• Code: 927
• Display: Power Off/on 927: Error
• Description: Tray5 24V Abnormal Voltage Detection
• Remedy: 24 V of power is not supplied to tray 5 properly. Check to confirm that tray 5 is mounted correctly.

• Code: 928
• Display: Power Off/on 928: Error
• Description: Fuser Motor Lock Error
• Remedy: The fuser is not operating properly. Does the error still occur?
  Check to confirm that the fuser is in position. Replace the fuser. Replace the fuser motor.

• Code: 929
• Display: Power Off/on 929: Error
• Description: Waste Toner Transfer Motor Lock Error
• Remedy: The waste toner transfer motor is not operating properly. Does the error still occur?
  Check to confirm that the waste toner transfer system is operating properly. Replace the waste toner motor.

• Code: 930
• Display: Power Off/on 930: Error
• Description: Sub-CPU Clock Frequency Error
  The Sub-CPU clock frequency is not correct.
• Remedy: The Sub-CPU clock frequency is not correct. Does the error still occur?
  Check the connection of the S2P board. Replace the S2P board.

• Code: 931
• Display: Power Off/on 931: Error
• Description: Duplex CPU Clock Frequency Error
• Remedy: The duplex CPU clock frequency is not correct.Does the error still occur?
  Check the connection of the V72-18 board. Replace the V72-18 board.

• Code: 932
• Display: Power Off/on 932: Error
• Description: Inverter CPU Clock Frequency Error
• Remedy: The inverter CPU clock frequency is not correct. Does the error still occur?
  Check the connection of the V72-13 board. Replace the V72-13 board.

• Code: 933
• Display: Power Off/on 933: Error
• Description: Trya2 CPU Clock Frequency Error
• Remedy: The tray-2 CPU clock frequency is not correct. Does the error still occur?
  Check the connection of the V72-17 board of tray 2. Replace the V72-17 board.

• Code: 934
• Display: Power Off/on 934: Error
• Description: Trya3 CPU Clock Frequency Error
• Remedy: The tray-3 CPU clock frequency is not correct. Does the error still occur?
  Check the connection of the V72-17 board of tray 3. Replace the V72-17 board.