• Code: 1C
• Description: Drum error (M)
• Causes: After the error code 48, 49, 4A, or 4B (the drum unit is at the end of life) occurs, and when the counter value exceeds twice the life expectancy and electric discharge occurs due to smear on the corona wire, and disturbance is detected in the charge current of the high-voltage power supply PCB, the error code 83, 1B, 1C, or 1D appears. When the error code 83, 1B, 1C, or 1D appears, the performance of the drum unit cannot be maintained, and the print quality is deteriorated, and therefore the use of the drum is stopped.
• Remedy: 1 FFC connection failure of each LED ASSY Check the FFC connection of the appropriate color and reconnect it. 2 LED head control PCB failure Replace the LED head control PCB ASSY. 3 Failure of each LED ASSY Replace the LED ASSY of the appropriate color. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.

• Code: 1D
• Description: Drum error (Y)
• Causes: After the error code 48, 49, 4A, or 4B (the drum unit is at the end of life) occurs, and when the counter value exceeds twice the life expectancy and electric discharge occurs due to smear on the corona wire, and disturbance is detected in the charge current of the high-voltage power supply PCB, the error code 83, 1B, 1C, or 1D appears. When the error code 83, 1B, 1C, or 1D appears, the performance of the drum unit cannot be maintained, and the print quality is deteriorated, and therefore the use of the drum is stopped.
• Remedy: 1 FFC connection failure of each LED ASSY Check the FFC connection of the appropriate color and reconnect it. 2 LED head control PCB failure Replace the LED head control PCB ASSY. 3 Failure of each LED ASSY Replace the LED ASSY of the appropriate color. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.

• Code: 20
• Description: LED ASSY error (K)
• Causes: 1 FFC connection failure of each LED ASSY. 2 LED head control PCB failure. 3 Failure of each LED ASSY. 4 Main PCB failure. 5 Low-voltage power supply PCB failure.
• Remedy: 1 FFC connection failure of each LED ASSY Check the FFC connection of the appropriate color and reconnect it. 2 LED head control PCB failure Replace the LED head control PCB ASSY. 3 Failure of each LED ASSY Replace the LED ASSY of the appropriate color. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.

• Code: 21
• Description: LED ASSY error (Y)
• Causes: 1 FFC connection failure of each LED ASSY. 2 LED head control PCB failure. 3 Failure of each LED ASSY. 4 Main PCB failure. 5 Low-voltage power supply PCB failure.
• Remedy: 1 FFC connection failure of each LED ASSY Check the FFC connection of the appropriate color and reconnect it. 2 LED head control PCB failure Replace the LED head control PCB ASSY. 3 Failure of each LED ASSY Replace the LED ASSY of the appropriate color. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.

• Code: 22
• Description: LED ASSY error (M)
• Causes: 1 FFC connection failure of each LED ASSY. 2 LED head control PCB failure. 3 Failure of each LED ASSY. 4 Main PCB failure. 5 Low-voltage power supply PCB failure.
• Remedy: 1 FFC connection failure of each LED ASSY Check the FFC connection of the appropriate color and reconnect it. 2 LED head control PCB failure Replace the LED head control PCB ASSY. 3 Failure of each LED ASSY Replace the LED ASSY of the appropriate color. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.

• Code: 23
• Description: LED ASSY error (C)
• Causes: 1 FFC connection failure of each LED ASSY. 2 LED head control PCB failure. 3 Failure of each LED ASSY. 4 Main PCB failure. 5 Low-voltage power supply PCB failure.
• Remedy: 1 FFC connection failure of each LED ASSY Check the FFC connection of the appropriate color and reconnect it. 2 LED head control PCB failure Replace the LED head control PCB ASSY. 3 Failure of each LED ASSY Replace the LED ASSY of the appropriate color. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.

• Code: 24
• Description: Internal temperature sensor error
• Causes: 1 Internal temperature sensor failure. 2 Engine PCB failure. 3 Main PCB failure.
• Remedy: 1 Internal temperature sensor failure Replace the drum motor origin sensor PCB ASSY. 2 Engine PCB failure Replace the engine PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.

• Code: 25
• Description: Develop drive motor error
• Causes: 1 Harness connection failure of motor. 2 Motor failure. 3 Engine PCB failure. 4 Main PCB failure. 5 Low-voltage power supply PCB failure.
• Remedy: 1 Harness connection failure of motor Check the harness connection of the appropriate motor and reconnect it. 2 Motor failure Replace the appropriate motor. 3 Engine PCB failure Replace the engine PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY. 5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.