• Code: 4013
• Description: Polygon motor (M) startup error
  Polygon motor (M) is not stabilized within 10 s since the motor is activated.
• Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (M) and LSU connect PWB(YC6) LSU connect PWB and engine PWB (YC14)
  Defective motor. Replace the Laser scanner unit (M).
  Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

• Code: 4014
• Description: Polygon motor (Y) startup error
  Polygon motor (Y) is not stabilized within 10 s since the motor is activated.
• Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (Y) and LSU connect PWB(YC8) LSU connect PWB and engine PWB (YC14)
  Defective motor. Replace the Laser scanner unit (Y).
  Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

• Code: 4101
• Description: BD initialization problem (K)
  BD is not detected within two seconds after the polygon motor stabilizes.
• Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC1) LSU connect PWB and engine PWB (YC13)
  Defective BDPWB. Defective APCPWB. Replace the Laser scanner unit (K).
  Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

• Code: 4102
• Description: BD initialization problem (C)
  BD is not detected within two seconds after the polygon motor stabilizes.
• Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC3) LSU connect PWB and engine PWB (YC13)
  Defective BDPWB. Defective APCPWB. Replace the Laser scanner unit (C).
  Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

• Code: 4103
• Description: BD initialization problem (M)
  BD is not detected within two seconds after the polygon motor stabilizes.
• Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC2) LSU connect PWB and engine PWB (YC13)
  Defective BDPWB. Defective APCPWB. Replace the Laser scanner unit (M).
  Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

• Code: 4104
• Description: BD initialization problem (Y)
  BD is not detected within two seconds after the polygon motor stabilizes.
• Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC4) LSU connect PWB and engine PWB (YC13)
  Defective BDPWB. Defective APCPWB. Replace the Laser scanner unit (M).
  Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

• Code: 4201
• Description: BD steady-state error K
  The BD signal is not detected.
• Causes: PD PWB K (LSU). Engine PWB
• Remedy: PD PWB K (LSU) 1. Confirm that the FCC wiring connector is not distorted and connect the FCC wiring all the way in. Laser scanner unit and LSU relay PWB (YC1) LSU relay PWB (YC10) and Engine PWB (YC13) 2. If the FCC wiring is disconnected, shorted or grounded, replace the FCC wiring. 3. Replace the laser scanner unit.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 4202
• Description: BD steady-state error C
  The BD signal is not detected.
• Causes: PD PWB C (LSU). Engine PWB
• Remedy: PD PWB C (LSU) 1. Confirm that the FCC wiring connector is not distorted and connect the FCC wiring all the way in. Laser scanner unit and LSU relay PWB (YC3) LSU relay PWB (YC10) and Engine PWB (YC13) 2. If the FCC wiring is disconnected, replace the FCC wiring. 3. Replace the laser scanner unit.
  Engine PWB 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.