• Code: 4600
• Description: The number of printable pages of the laser unit has reached the upper limit.
• Remedy: 1 End of life of the laser unit Replace the laser unit. Reset counters for consumable parts (function code: 88) to reset the laser unit counter after the replacement. 2 Replace the laser unit with a new one and reset the laser unit counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4B01
• Description: Dot counter or develop roller counter of the toner is reaching the upper limit.
• Remedy: 1 Replace the toner cartridge with a new one. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4C01
• Description: Dot counter or develop roller counter of the toner has reached the upper limit.
• Remedy: 1 Replace the toner cartridge with a new one. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4F01
• Description: The new toner sensor could not detect the new toner cartridge correctly.
• Remedy: • If the machine is on the uneven surface, place it on a level surface. 1 Connection failure of the relay front harness Reconnect the relay front harness. 2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator. 3 Develop joint coming off or caught in some sections of the machine Reattach the develop joint. 4 New toner sensor failure Replace the relay front PCB ASSY. 5 Paper feed drive gears failure Replace the main frame L ASSY. 6 If the error display is not cleared after replacing the toner cartridge with a new one again, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5001
• Description: Printable pages set for PF kit MP have reached the upper limit.
• Remedy: 1 End of life of the applicable PF kit Replace the applicable PF kit. Reset counters for consumable parts (function code: 88) to reset the applicable PF kit counter after the replacement. 2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty.

• Code: 5002
• Description: Printable pages set for PF kit 1 have reached the upper limit.
• Remedy: 1 End of life of the applicable PF kit Replace the applicable PF kit. Reset counters for consumable parts (function code: 88) to reset the applicable PF kit counter after the replacement. 2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty.

• Code: 5003
• Description: Printable pages set for PF kit 2 have reached the upper limit.
• Remedy: 1 End of life of the applicable PF kit Replace the applicable PF kit. Reset counters for consumable parts (function code: 88) to reset the applicable PF kit counter after the replacement. 2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty.

• Code: 5004
• Description: Printable pages set for PF kit 3 have reached the upper limit.
• Remedy: 1 End of life of the applicable PF kit Replace the applicable PF kit. Reset counters for consumable parts (function code: 88) to reset the applicable PF kit counter after the replacement. 2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty.