• Code: 4104
• Description: BD initialization error(Y) In case the BD signal is not detected for 1s after starting the polygon motor drive.
• Remedy: Laser scanner unit (LSU) 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. LSU - Main PWB(YC2016): 30 ppm model - Engine PWB(YC8): 35/40 ppm models 2. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 3. Replace the LSU.
  Main PWB Engine PWB 1. Check the controller firmware and engine firmware, and upgrade to the latest version. 2. Replace the main PWB. 3. Replace the engine PWB.

• Code: 4201
• Description: BD steady-state error (K) During the polygon motor steady rotation, the BD signal is not detected.
• Remedy: Laser scanner unit (LSU) 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. LSU - Main PWB(YC2016): 30 ppm model - Engine PWB(YC8): 35/40 ppm models 2. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 3. Replace the LSU.
  Main PWB Engine PWB 1. Check the controller firmware and engine firmware, and upgrade to the latest version. 2. Replace the main PWB. 3. Replace the engine PWB.

• Code: 4600
• Description: Cleaning motor Error In case the cleaning motor CW drive time is 2100ms or less. In case the CW or CCW operation continues 6.4s or more in succession.
• Remedy: Cleaning wire 1. Execute [LSU cleaning] using [Adjustment/Maintenance] of the system menu. 2. Check that the drive gear and cleaning spiral can rotate and they are not unusually loaded, and if necessary, clean and grease.
  Cleaning motor 1. Confirm that the cleaning motor has been firmly attached. 2. Replace the LSU.
  Engine PWB 1. Reconnect the connector if its connection is loose. 2. If a wire is pinched by another component, or has defective conduction, replace it. Cleaning motor - Engine PWB(YC5): 30 ppm model - Engine PWB(YC10): 35/40 ppm models 3. Replace the engine PWB.

• Code: 4700
• Description: VIDEO_ASIC device error Communication with the video ASIC has failed 5 times successively. After writing to the VIDEO ASIC, the error that the reading value from the same address does not match occurs 8 times successively.
• Remedy: Main PWB 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug in the power cord and then turn on the power switch. 2. Check that the connectors on the main PWB are properly connected, and if not, re-connect them. 3. Replace the main PWB.

• Code: 5101
• Description: Main charger error (Black) In case the incoming current is too low to detect Black when adjusting the Vpp of the main charge. (40 ppm model only)
• Remedy: Charger roller unit (Black) 1. Check if the main charger roller can be rotated manually and reattach it to the drum unit. 2. Check if the main charger roller side contact and main unit side contact are dirty or deformed. Clean or correct it.
  Defective connector cable or poor contact in the connector 1. Reconnect the connector if its connection is loose. 2. Check the continuity within the connector wire. If none, replace the wire. High voltage PWB - Engine PWB(YC8): 30 ppm model - Engine PWB(YC12): 35 ppm model - Engine PWB(YC13): 40 ppm model
  High voltage PWB 1. Check if the main charger roller contact on the high voltage PWB is deformed or dirty. 2. Replace the high voltage PWB.
  Engine PWB Replace the engine PWB.

• Code: 5102
• Description: Main charger error (Cyan) In case the incoming current is too low to detect Cyan when adjusting the Vpp of the main charge. (40 ppm model only)
• Remedy: Charger roller unit (Cyan) 1. Check if the main charger roller can be rotated manually and reattach it to the drum unit. 2. Check if the main charger roller side contact and main unit side contact are dirty or deformed. Clean or correct it.
  Defective connector cable or poor contact in the connector 1. Reconnect the connector if its connection is loose. 2. Check the continuity within the connector wire. If none, replace the wire. High voltage PWB - Engine PWB(YC8): 30 ppm model - Engine PWB(YC12): 35 ppm model - Engine PWB(YC13): 40 ppm model
  High voltage PWB 1. Check if the main charger roller contact on the high voltage PWB is deformed or dirty. 2. Replace the high voltage PWB.
  Engine PWB Replace the engine PWB.

• Code: 5103
• Description: Main charger error (Magenta) In case the incoming current is too low to detect Magenta when adjusting the Vpp of the main charge. (40 ppm model only)
• Remedy: Charger roller unit (Magenta) 1. Check if the main charger roller can be rotated manually and reattach it to the drum unit. 2. Check if the main charger roller side contact and main unit side contact are dirty or deformed. Clean or correct it.
  Defective connector cable or poor contact in the connector 1. Reconnect the connector if its connection is loose. 2. Check the continuity within the connector wire. If none, replace the wire. High voltage PWB - Engine PWB(YC8): 30 ppm model - Engine PWB(YC12): 35 ppm model - Engine PWB(YC13): 40 ppm model
  High voltage PWB 1. Check if the main charger roller contact on the high voltage PWB is deformed or dirty. 2. Replace the high voltage PWB.
  Engine PWB Replace the engine PWB.

• Code: 5104
• Description: Main charger error (Yellow) In case the incoming current is too low to detect Yellow when adjusting the Vpp of the main charge. (40 ppm model only)
• Remedy: Charger roller unit (Yellow) 1. Check if the main charger roller can be rotated manually and reattach it to the drum unit. 2. Check if the main charger roller side contact and main unit side contact are dirty or deformed. Clean or correct it.
  Defective connector cable or poor contact in the connector 1. Reconnect the connector if its connection is loose. 2. Check the continuity within the connector wire. If none, replace the wire. High voltage PWB - Engine PWB(YC8): 30 ppm model - Engine PWB(YC12): 35 ppm model - Engine PWB(YC13): 40 ppm model
  High voltage PWB 1. Check if the main charger roller contact on the high voltage PWB is deformed or dirty. 2. Replace the high voltage PWB.
  Engine PWB Replace the engine PWB.