Causes: The Developer Bias Output Detection Signal (BIAS_LD) continues to be “L” for 1 second or longer when the Developer Bias is supplied to the Developer Unit.
Remedy: Wires 1 Are wires among Developer Unit, HV Power Supply PWB and PW10520 PWB connected properly? No Connect them properly. Is the toner spill out from the Developer Unit? (Or is there any similar problem?) Yes Clean each Corona Wire, Grid Plate and housing. Developer Unit 2 Is the high voltage of Regulation Roller leaking? (The resistance between the central part of Regulation Roller and the Ground is 5 mega ohm or smaller if leaking.) Yes Replace the Regulation Roller. HV Power Supply 3 Can you fix the problem if you replace the HV Power Supply? Yes OK
Code: E040
Description: Cutter Error
Causes: 1. The Cutter Home Sensor Signal (MSCUT_L or MSCUT_R) does not change to “H” within 100 millisecond since the Cutter has started the operation. 2. The Cutter Home Sensor Signal (MSCUT_L or MSCUT_R) does not change to “L” within 1 second since the Cutter has started the operation.
Remedy: Wires 1 Is the wire between Cutter Unit and PW10520 PWB connected properly? No Connect it properly. Cutter Home Position Sensors (MS6 & MS7) 2 Check the status of the following signals in the Device Status Mode of the Service Mode. Signal Code : 078 (Cutter Home Position Right) 079 (Cutter Home Position Left) Is the status “L” when the Cutter is at each home position? No Replace the Cutter Unit. Developer Press Sensor (PH4) 3 Check the operation of Cutter in the Device Operation Mode of the Service Mode. Signal Code : 27 (Cutter Motor 1) 28 (Cutter Motor 2) Does the Cutter operate? No Replace the Cutter Unit.
Code: E050
Description: FPGA Error
Causes: Initialization of FPGA is failed after turning on.
Remedy: PW10520 PWB 1 Can you fix the problem if you replace the PW10520 PWB? Yes OK
Code: E070
Description: Developer Error
Causes: 1. The Connector J-253 is not connected. 2. The Switch (MS4) is “open” condition, which detects open/close of Engine Unit or Toner Hatch.
Remedy: Wires 1 Is the wire between Developer Unit and PW10520 PWB connected properly? No Connect it properly. Switch (MS4) 2 Is the actuator of Switch correctly pressed down when you close the Engine Unit or Toner Hatch? No Adjust the positions of Switch (or Toner Hatch and Engine Unit).
Code: E080
Description: Density Sensor Error
Causes: The default output of Density Sensor reaches less than 0.1V or more than 1.3V.
Remedy: Wires 1 Is the wire between Toner Density Sensor and PW11620 PCB connected properly? No Connect it properly. Density Sensor (PH11) 2 Can you fix the problem if you replace Density Sensor? Yes OK PW11620 PCB 3 Can you fix the problem if you replace PW11620 PCB? No OK
Code: E081
Description: Density Sensor Output Error
Causes: The gap between the default output and the standard output of Density Sensor reaches less than 2V.
Remedy: Wires 1 Is the wire between Toner Density Sensor and PW11620 PCB connected properly? No Connect it properly. Density Sensor (PH11) 2 Can you fix the problem if you replace Density Sensor? Yes OK PW11620 PCB 3 Can you fix the problem if you replace PW11620 PCB? No OK