Description: Fuser unit failure (The center thermistor detects higher temperature than the specified value.)
Causes:
Remedy: 1 Fuser unit harness connection failure Check the harness connection of the fuser unit and reconnect it. 2 Fuser unit failure Replace the fuser unit. 3 LVPS PCB unit failure Replace the LVPS PCB unit. 4 Main PCB failure Replace the main PCB ASSY.
Code: 6D
Description: Fuser unit failure (The center thermistor detects lower temperature than the specified value.)
Causes:
Remedy: 1 Fuser unit harness connection failure Check the harness connection of the fuser unit and reconnect it. 2 Fuser unit failure Replace the fuser unit. 3 LVPS PCB unit failure Replace the LVPS PCB unit. 4 Main PCB failure Replace the main PCB ASSY.
Code: 6E
Description: Fuser unit failure (The center thermistor does not detect temperature rising within the specified time.)
Causes:
Remedy: 1 Fuser unit harness connection failure Check the harness connection of the fuser unit and reconnect it. 2 Fuser unit failure Replace the fuser unit. 3 LVPS PCB unit failure Replace the LVPS PCB unit. 4 Main PCB failure Replace the main PCB ASSY.
Code: 6F
Description: Fuser unit failure (The center and side thermistors detect extremely high temperature.)
Causes:
Remedy: 1 Fuser unit harness connection failure Check the harness connection of the fuser unit and reconnect it. 2 Fuser unit failure Replace the fuser unit. 3 LVPS PCB unit failure Replace the LVPS PCB unit. 4 Main PCB failure Replace the main PCB ASSY.
Code: 71
Description: Polygon motor failure (Cannot detect the period signal of the polygon mirror motor.)
Causes:
Remedy: 1 Laser unit harness connection failure Check the two harness connections of the laser unit and reconnect them. 2 Laser unit failure Replace the laser unit. 3 Main PCB failure Replace the main PCB ASSY.
Code: 72
Description: BD beam detecting sensor malfunction
Causes: Laser unit harness connection failure. Laser unit failure. Main PCB failure
Remedy: 1 Laser unit harness connection failure Check the two harness connections of the laser unit and reconnect them. 2 Laser unit failure Replace the laser unit. 3 Main PCB failure Replace the main PCB ASSY.