• Code: 924
• Display: Service Call 924
• Description: Tray2 24V Abnormal Voltage Detection
  24 V of power is not supplied to tray 2 properly.
• Remedy: 24 V of power is not supplied to tray 2 properly.
  Check to confirm that tray 2 is mounted correctly.

• Code: 925
• Display: Service Call 925
• Description: Tray3 24V Abnormal Voltage Detection
  24 V of power is not supplied to tray 3 properly.
• Remedy: 24 V of power is not supplied to tray 3 properly.
  Check to confirm that tray 3 is mounted correctly.

• Code: 926
• Display: Service Call 926
• Description: Tray4 24V Abnormal Voltage Detection
  24 V power is not supplied to tray 4 properly.
• Remedy: 24 V power is not supplied to tray 4 properly.
  Check to confirm that tray 4 is mounted correctly.

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

• Code: 928
• Display: Service Call 928
• 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: Service Call 929
• 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: Service Call 930
• Description: Sub-CPU Clock Frequency Error
• Remedy: The Sub-CPU clock frequency is not correct. Does the error still occur?
  Check the connection of the S2M board. Replace the S2M board.

• Code: 931
• Display: Service Call 931
• 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 V72-2 board. Replace the V72-2 board.