• Code: 46
• Description: No toner cartridge (M)
• Causes: 1 Harness connection failure of toner/new sensor PCB ASSY. 2 Engine PCB failure. 3 Main PCB failure. 4 Toner/new sensor PCB failure.
• Remedy: 1 Harness connection failure of toner/new sensor PCB ASSY Check the harness connection of the toner/new sensor PCB ASSY and reconnect it. 2 Engine PCB failure Replace the engine PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY. 4 Toner/new sensor PCB failure Replace the toner/new sensor PCB ASSY.

• Code: 47
• Description: No toner cartridge (C)
• Causes: 1 Harness connection failure of toner/new sensor PCB ASSY. 2 Engine PCB failure. 3 Main PCB failure. 4 Toner/new sensor PCB failure.
• Remedy: 1 Harness connection failure of toner/new sensor PCB ASSY Check the harness connection of the toner/new sensor PCB ASSY and reconnect it. 2 Engine PCB failure Replace the engine PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY. 4 Toner/new sensor PCB failure Replace the toner/new sensor PCB ASSY.

• Code: 48
• Description: Drum life end (K) (The drum counter value reaches the end of life.)
• Causes:
• Remedy: - Replace the drum unit of the appropriate color with a new one. - After replacing the drum unit with a new one, reset the counter using the control panel cover ASSY on the machine. (Refer to “2.1.3 Resetting the life counter of the drum unit” in Chapter 7.)

• Code: 49
• Description: Drum life end (Y) (The drum counter value reaches the end of life.)
• Causes:
• Remedy: - Replace the drum unit of the appropriate color with a new one. - After replacing the drum unit with a new one, reset the counter using the control panel cover ASSY on the machine. (Refer to “2.1.3 Resetting the life counter of the drum unit” in Chapter 7.)

• Code: 4A
• Description: Drum life end (M) (The drum counter value reaches the end of life.)
• Causes:
• Remedy: - Replace the drum unit of the appropriate color with a new one. - After replacing the drum unit with a new one, reset the counter using the control panel cover ASSY on the machine. (Refer to “2.1.3 Resetting the life counter of the drum unit” in Chapter 7.)

• Code: 4B
• Description: Drum life end (C) (The drum counter value reaches the end of life.)
• Causes:
• Remedy: - Replace the drum unit of the appropriate color with a new one. - After replacing the drum unit with a new one, reset the counter using the control panel cover ASSY on the machine. (Refer to “2.1.3 Resetting the life counter of the drum unit” in Chapter 7.)

• Code: 4C
• Description: Drum life end soon (K) (The drum counter value reaches 90 % of life.)
• Causes:
• Remedy: - Prepare a new drum unit of the appropriate color.

• Code: 4D
• Description: Drum life end soon (Y) (The drum counter value reaches 90 % of life.)
• Causes:
• Remedy: - Prepare a new drum unit of the appropriate color.