Causes: 1 Power off or front cover opened while detecting a new toner cartridge. 2 New toner sensor failure.
Remedy: 1 Power off or front cover opened while detecting a new toner cartridge Reset the developing bias voltage and develop roller counter. 2 New toner sensor failure Replace the relay front PCB.
Code: C7
Description: Insufficient DIMM Memory
Causes: 1 Main PCB failure.
Remedy: Replace the main PCB ASSY.
Code: C8
Description: Secure print data full
Causes: 1 Main PCB failure.
Remedy: Replace the main PCB ASSY.
Code: C9
Description: DIMM error
Causes: 1 Main PCB failure.
Remedy: Replace the main PCB ASSY.
Code: CA
Description: Excess current to USB device that is front side of the machine
Causes: 1 Harness connection failure of USB host relay PCB ASSY. 2 USB host relay PCB failure. 3 Main PCB failure.
Remedy: 1 Harness connection failure of USB host relay PCB ASSY Check the harness connection of the USB host relay PCB ASSY and reconnect it. 2 USB host relay PCB failure Replace the USB host relay PCB ASSY. 3 Main PCB failure Replace the main PCB ASSY.
Code: CD
Description: Drum unit is not installed into the machine
Causes: 1 Dirt on electrodes on drum unit and machine body. 2 HVPS PCB unit failure. 3 Main PCB failure
Remedy: 1 Dirt on electrodes on drum unit and machine body Clean both electrodes. 2 HVPS PCB unit failure Replace the HVPS PCB unit. 3 Main PCB failure Replace the main PCB ASSY.
Code: D1
Description: Modem initialization failed
Causes: 1 Main PCB failure
Remedy: Replace the main PCB ASSY.
Code: DD
Description: Fuser error other than 58, 59, 68, 69, 6A, 6B, 6C, 6D, 6E, 6F, 76, 78, DE and E2 are occurred
Causes: 1 Fuser unit failure. 2 Main PCB failure. 3 LVPS PCB failure.
Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY. 3 LVPS PCB failure Replace the LVPS PCB ASSY.