• Code: 3500
• Description: Communication error between scanner and ASIC An error code is detected.
• Remedy: ISC PWB 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. ISC PWB (YC3) and Main PWB (YC11) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the ISC PWB and execute U411.
  Main PWB Replace the main PWB.

• Code: 3600
• Description: Scanner sequence error An abnormal process has occurred inside the program.
• Remedy: ISC PWB 1. Execute U021 memory initializing. 2. Replace the ISC PWB and execute U411.

• Code: 3700
• Description: Scanner device error A CCD that does not fit the device has been attached.
• Remedy: CCD (ISU) Since the ISU is mounted with a CCD of different type, install the ISU that matches with the model.

• Code: 3800
• Description: AFE error When writing the data, read and write data does not match 3 times in succession. No response is received in 100 ms from AEF.
• Remedy: ISC PWB 1. Confirm that the FFC wiring connector is not distorted and connect the FFC wiring all the way in. CCD PWB (YC2) and ISC PWB (YC9) 2. If the FFC wiring is disconnected, replace the FFC wiring. 3. Replace the ISC PWB and execute U411.
  CCD PWB Replace the ISU PWB and execute U411.

• Code: 3900
• Description: Backup memory read/write error (ISC PWB) Read and write data does not match.
• Remedy: Backup memory (ISC PWB) 1. Turn the main power switch off and after 5 seconds, turn it on. 2. Replace the ISC PWB and execute U411.

• Code: 4001
• Description: Polygon motor K synchronization error After polygon motor K 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 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: 4002
• Description: Polygon motor C synchronization error After polygon motor C 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 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: 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.