Code: 0F

• Description:The back cover is open upon duplex-printing. (The back cover sensor is OFF)
• Causes:1 Harness connection failure of paper eject sensor PCB ASSY. 2 The member part to press the back cover sensor which is located at the inner side of the back cover is broken. 3 The member part to press the back cover sensor which is located at the duplex tray is broken. 4 Back cover sensor failure. 5 Main PCB failure
• Remedy:1 Harness connection failure of paper eject sensor PCB ASSY Check the harness connection of the paper eject sensor PCB ASSY and reconnect it. 2 The member part to press the back cover sensor which is located at the inner side of the back cover is broken. Replace the back cover. 3 The member part to press the back cover sensor which is located at the duplex tray is broken. Replace the duplex tray. 4 Back cover sensor failure Replace the paper eject sensor PCB ASSY. 5 Main PCB failure Replace the main PCB ASSY.

Code: 1E

• Description:The drum unit will reach the end of life soon.
• Causes:1 Main PCB failure
• Remedy:Replace the main PCB ASSY.

Code: 24

• Description:Internal temperature sensor error.
• Causes:
• Remedy:1 Harness connection failure of internal temperature sensor Check the harness connection of internal temperature sensor and reconnect it. 2 Internal temperature sensor failure Replace the internal temperature sensor. 3 Main PCB failure Replace the main PCB ASSY.

Code: 36

• Description:Error in the high voltage power suply PCB while the machine is in the standby mode.
• Causes:
• Remedy:1 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 2 Harness connection failure of high voltage power supply PCB Check the harness connection of the high voltage power supply PCB and reconnect it. 3 Main PCB failure Replace the main PCB ASSY.

Code: 3B

• Description:Main PCB DRAM access error.
• Causes:1 Main PCB failure
• Remedy:

Code: 44

• Description:The toner cartridge is not installed.
• Causes:
• Remedy:1 Dirt on the electrode of the drum unit and on the machine Clean the dirt on the contact points of the both electrodes. 2 Harness connection failure of high voltage power supply PCB Check the harness connection of the high voltage power supply PCB and reconnect it. 3 High voltage power supply PCB failure Replace the high voltage power supply PCB ASSY. 4 Main PCB failure Replace the main PCB ASSY.

Code: 50

• Description:Drum unit is at the end of life. (Continue printing)
• Causes:1 Main PCB failure
• Remedy:Replace the main PCB ASSY.

0Code: 56

• Description:The fuser cover is open.
• Causes:• Close the fuser cover properly.
• Remedy:1 Paper eject actuator catching on some position Correct the position of the paper eject actuator. 2 Paper eject sensor PCB failure Check the sensor performance following the procedure described in “Function code 32”. If any problem occurs, replace the paper eject sensor PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.