Causes: Bias Output Detection Signal (BIAS_LD) continues to be “L” for 1 second or longer when a specified bias is supplied to the corresponding Developer Unit components.
Remedy: Wires 1 Are wires among Developer Unit, HV Power Supply PCB and PW11720 PCB connected properly? No Connect them properly. Developer Unit 2 Power Supply PCB and PW11720 PCB connected properly? No Connect them properly. Developer Unit 2 Is the toner spill out from the Developer Unit? (Or is there any similar problem?) Yes Clean each Corona Wire, Grid Plate and housing. 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: E-0040
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 PW11720 PCB connected properly? No Connect it properly. Cutter Home Position Sensors (MS8 & MS9) 2 Check the status of the following signals in the Signal Status Mode of the Service Mode. Signal Code : 094 (Cutter Home Position Right) 095 (Cutter Home Position Left) Is the status “L” when the Cutter is at each home position? No Replace the Cutter Unit. Cutter Motor (M4) 3 Check the operation of Cutter in the Operation Check Mode of the Service Mode. Device Code : 27 (Cutter Motor 1) 28 (Cutter Motor 2) Does the Cutter operate? No Replace the Cutter Unit.
Code: E-0050
Description: FPGA Error
Causes: Initialization of FPGA is failed after turning on.
Remedy: PW11720 PCB 1 Can you fix the problem if you replace the PW11720 PCB? Yes OK
Code: E-0070
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 PW11720 PCB connected properly? No Connect it properly.
Code: E-0080
Description: Density Sensor Error
Causes: Density Sensor cannot be calibrated correctly before Density Measure.
Remedy: Wires 1 Is the wire between Toner Density Sensor and PW11720 PCB connected properly? No Connect it properly. Density Sensor (PH8) 2 Can you fix the problem if you replace Density Sensor? No Replace PW11720 with a new one.
Code: E-0090
Description: Eraser Lamp Error
Causes: 1. The connector J-227 / J-228 is not connected. 2. Eraser Lamp (PW6631) is broken.
Remedy: Wires 1 Is the wire between Toner Density Sensor and PW11720 PCB connected properly? Is the spring on the left bottom of the Process Unit OK? No Connect it properly. Eraser Lamp 2 Can you fix the problem if you replace PW6631 (LED PCB)? No Replace PW11720 with a new one.