Description: Replacement time of the drum unit. (The drum counter reached the upper limit.)
Causes: Main PCB failure
Remedy: Replace the main PCB ASSY.
Code: 56
Description: Fuser cover opened
Causes: Harness connection failure of back cover switch ASSY. Eject actuator failure. Eject sensor PCB ASSY failure. Main PCB failure
Remedy: 1 Harness connection failure of back cover switch ASSY Check the harness connection of the back cover switch ASSY and reconnect it. 2 Eject actuator failure Re-assemble the eject actuator 3 Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.
Code: 58
Description: Fuser unit failure
Causes: Harness connection failure between fuser unit and eject sensor PCB. Fuser unit failure. LVPS PCB failure. Eject sensor PCB ASSY failure. Main PCB failure
Remedy: 1 Harness connection failure between fuser unit and eject sensor PCB Check the harness connection between the fuser unit and eject sensor PCB, and reconnect it. 2 Fuser unit failure Replace the fuser unit. 3 LVPS PCB failure Replace the LVPS PCB unit. 4 Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY. 5 Main PCB failure Replace the main PCB ASSY.
Code: 59
Description: Fuser unit failure
Causes: Harness connection failure between fuser unit and eject sensor PCB. Fuser unit failure. LVPS PCB failure. Eject sensor PCB ASSY failure. Main PCB failure
Remedy: 1 Harness connection failure between fuser unit and eject sensor PCB Check the harness connection between the fuser unit and eject sensor PCB, and reconnect it. 2 Fuser unit failure Replace the fuser unit. 3 LVPS PCB failure Replace the LVPS PCB unit. 4 Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY. 5 Main PCB failure Replace the main PCB ASSY.
Code: 5A
Description: HVPS PCB failure (Developing bias voltage failure)
Remedy: 1 HVPS PCB ASSY harness connection failure Check the harness connection between the HVPS PCB and main PCB. Then, reconnect them. 2 HVPS PCB failure Replace the HVPS PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.
Code: 5B
Description: New toner detection lever malfunction
Causes: New toner detection switch harness connection failure. New toner detection switch failure. Main PCB failure
Remedy: 1 New toner detection switch harness connection failure Check the harness connection of the new toner detection switch. Then, reconnect it. 2 New toner detection switch failure Replace the new toner harness ASSY. 3 Main PCB failure Replace the main PCB ASSY.