• Code: 4003
• Description: Polygon motor M synchronization error
  After polygon motor M is driven, the ready signal does not turn to L within 30 s. The polygon motor speed won’t stabilize within 10 s.
• Remedy: Polygon motor M (LSU): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Polygon motor M and LSU relay PWB (YC7) LSU relay PWB (YC3) and Engine PWB (YC12) 2. If the wiring is disconnected, shorted or grounded, replace the 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: 4004
• Description: Polygon motor Y synchronization error
  After polygon motor Y is driven, the ready signal does not turn to L within 30 s. The polygon motor speed won’t stabilize within 10 s.
• Remedy: Polygon motor Y (LSU): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Polygon motor Y and LSU relay PWB (YC11) LSU relay PWB (YC3) and Engine PWB (YC12) 2. If the wiring is disconnected, shorted or grounded, replace the 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: 4011
• Description: Polygon motor K steadystate error
  After polygon motor K is stabilized, the ready signal is at the H level for 15 s continuously.
• Remedy: Polygon motor K (LSU): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Polygon motor K and LSU relay PWB (YC4) LSU relay PWB (YC3) and Engine PWB (YC12) 2. If the wiring is disconnected, shorted or grounded, replace the 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: 4012
• Description: Polygon motor C steadystate error
  After polygon motor C is stabilized, the ready signal is at the H level for 15 s continuously.
• Remedy: Polygon motor C (LSU): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Polygon motor C and LSU relay PWB (YC9) LSU relay PWB (YC3) and Engine PWB (YC12) 2. If the wiring is disconnected, shorted or grounded, replace the 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: 4013
• Description: Polygon motor M steadystate error
  After polygon motor M is stabilized, the ready signal is at the H level for 15 s continuously.
• Remedy: Polygon motor M (LSU): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Polygon motor M and LSU relay PWB (YC7) LSU relay PWB (YC3) and Engine PWB (YC12) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the laser scanner unit.
  Engine PWB: Check the engine software and upgrade to the latest, if necessary. Replace the engine PWB

• Code: 4014
• Description: Polygon motor Y steadystate error
  After polygon motor Y is stabilized, the ready signal is at the H level for 15 s continuously.
• Remedy: Polygon motor Y (LSU): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Polygon motor Y and LSU relay PWB (YC11) LSU relay PWB (YC3) and Engine PWB (YC12) 2. If the wiring is disconnected, shorted or grounded, replace the 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: 4101
• Description: BD initialization error K
  After polygon motor K is driven, the BD signal is not detected for 1 s.
• 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 (YC5) LSU relay PWB (YC3) and Engine PWB (YC12) 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.

• Code: 4102
• Description: BD initialization error C
  After polygon motor C is driven, the BD signal is not detected for 1 s.
• 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 (YC10) LSU relay PWB (YC3) and Engine PWB (YC12) 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