• Code: E-020
• Description: Counter Error
  The Counter Connection Detection Signal (COUNT_OPN) continues to be “L” for 1 second or longer after turning on.
• Remedy: Wires 1 Is the wire between Counter and PW12420 PCB connected properly? No Connect it properly. Confirm that the machine is turned on, and then check the voltage of the orange line (J220-5). Is it 24V? No Replace the DC Power Supply if there is no problem with the wires. DC Power Supply (DCP1) or Fuse 2 Turn off the machine. Does the fuse (F1) have a proper conductivity? No Replace the fuse (F1). Counter 3 Check the operation of Counter in the Device Operation Mode of the Service Mode. Device Code : 26 (Counter) Does the Counter operate correctly? No Replace the Counter.

• Code: E-031
• Description: Image Corona Output Error
  The Image Corona Output Detection Signal (IM_LD) continues to be “L” for 1 second or longer when the Image Corona is ON.
• Remedy: Wires 1 Are wires among Image Corona, HV Power Supply PCB and PW12420 PCB connected properly? No Connect them properly. Is the Image Corona dirty? Yes Clean each Corona Wire, Grid Plate and housing. Image Corona 2 Is the Corona Wire broken? Yes Replace the Corona Wire. Does the bias terminal plate touch to Cleaning Roller shaft properly? No Remove and reapply conductive grease to Cleaning Roller shaft. Relocate the bias terminal plates properly. Cleaning Roller 3 Is grease applied enough? No Remove and reapply conductive grease to Cleaning Roller shaft. Is the Transfer Corona dirty? Yes Clean each Corona Wire and housing. Transfer Corona 4 Is the Corona Wire broken? Yes Replace the Corona Wire. Is the Separation Corona dirty? Yes Clean each Corona Wire and housing. Separation Corona 5 Is the Corona Wire broken? Yes Replace the Corona Wire. HV Power Supply 6 Can you fix the problem if you replace the HV Power Supply? Yes OK

• Code: E-032
• Description: Separation Corona Output Error
  The Separation Corona Output Detection Signal (AC_LD) continues to be “L” for 1 second or longer when the Separation Corona is ON.
• Remedy: Wires 1 Are wires among Image Corona, HV Power Supply PCB and PW12420 PCB connected properly? No Connect them properly. Is the Image Corona dirty? Yes Clean each Corona Wire, Grid Plate and housing. Image Corona 2 Is the Corona Wire broken? Yes Replace the Corona Wire. Does the bias terminal plate touch to Cleaning Roller shaft properly? No Remove and reapply conductive grease to Cleaning Roller shaft. Relocate the bias terminal plates properly. Cleaning Roller 3 Is grease applied enough? No Remove and reapply conductive grease to Cleaning Roller shaft. Is the Transfer Corona dirty? Yes Clean each Corona Wire and housing. Transfer Corona 4 Is the Corona Wire broken? Yes Replace the Corona Wire. Is the Separation Corona dirty? Yes Clean each Corona Wire and housing. Separation Corona 5 Is the Corona Wire broken? Yes Replace the Corona Wire. HV Power Supply 6 Can you fix the problem if you replace the HV Power Supply? Yes OK

• Code: E-033
• Description: Transfer Corona Output Error
  The Transfer Corona Output Detection Signal (TR_LD) continues to be “L” for 1 second or longer when the Transfer Corona is ON.
• Remedy: Wires 1 Are wires among Image Corona, HV Power Supply PCB and PW12420 PCB connected properly? No Connect them properly. Is the Image Corona dirty? Yes Clean each Corona Wire, Grid Plate and housing. Image Corona 2 Is the Corona Wire broken? Yes Replace the Corona Wire. Does the bias terminal plate touch to Cleaning Roller shaft properly? No Remove and reapply conductive grease to Cleaning Roller shaft. Relocate the bias terminal plates properly. Cleaning Roller 3 Is grease applied enough? No Remove and reapply conductive grease to Cleaning Roller shaft. Is the Transfer Corona dirty? Yes Clean each Corona Wire and housing. Transfer Corona 4 Is the Corona Wire broken? Yes Replace the Corona Wire. Is the Separation Corona dirty? Yes Clean each Corona Wire and housing. Separation Corona 5 Is the Corona Wire broken? Yes Replace the Corona Wire. HV Power Supply 6 Can you fix the problem if you replace the HV Power Supply? Yes OK

• Code: E-034
• Description: Bias Output Error
  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 PW12420 PCB 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: E-040
• Description: Cutter Error
  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 PW12420 PCB connected properly? No Connect it properly. Cutter Home Position Sensors (MS6 & MS7) 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. Developer Press Sensor (PH4) 3 Check the operation of Cutter in the Device Operation 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-050
• Description: FPGA Error
  Initialization of FPGA is failed after turning on.
• Remedy: PW12420 PCB 1 Can you fix the problem if you replace the PW12420 PCB? Yes OK

• Code: E-070
• Description: Developer Unit Set Error
  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 PW12420 PCB 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).