• Code: 195
• Description: Serial Number Error
  The serial number stored in the memory (EGB) is not correct.
• Causes: EEPROM defective. EGB replaced without original EEPROM.
• Remedy: 1. Check the serial number. 2. If the stored serial number is incorrect, contact your supervisor. 3. Appendix: Troubleshooting Guide 16

• Code: 202
• Description: Polygon motor error 1: ON timeout
  The polygon mirror motor does not reach the targeted operating speed within 5 sec. after turning on or changing speed
• Causes: Polygon motor/driver board harness loose or disconnected. Polygon motor/driver board defective. Laser optics unit defective. IPU (EGB) defective.
• Remedy: 1. Replace the interface harness of the laser optics unit. 2. Replace the laser optics unit. 3. Replace the EGB (Engine Board).

• Code: 203
• Description: Polygon motor error 2: OFF timeout
  The polygon mirror motor does not leave the READY status within 3 sec. after the polygon motor switched off.
• Causes: Polygon motor/driver board harness loose or disconnected. Polygon motor/driver board defective. Laser optics unit defective. IPU (EGB) defective.
• Remedy: 1. Replace the interface harness of the laser optics unit. 2. Replace the laser optics unit. 3. Replace the EGB (Engine Board).

• Code: 204
• Description: Polygon motor error 3: XSCRDY signal error
  The SCRDY_N signal remains HIGH for 200 ms while the LD unit is firing.
• Causes: Polygon motor/driver board harness loose or disconnected. Polygon motor/driver board defective. Laser optics unit defective. IPU (EGB) defective.
• Remedy: 1. Replace the interface harness of the laser optics unit. 2. Replace the laser optics unit. 3. Replace the EGB (Engine Board).

• Code: 220
• Description: Laser Synchronizing Detection Error: [K]/[Y]
  The laser synchronizing detection signal for LDB [K]/[Y] is not output after the LDB unit has turned on while the polygon motor is rotating normally.
• Causes: Disconnected cable from the laser synchronizing detection unit or defective connection. Defective laser synchronizing detector. Defective LDB. Defective EGB.
• Remedy: 1. Check the connectors. 2. Replace the laser optics unit. 3. Replace the EGB.

• Code: 222
• Description: Laser Synchronizing Detection Error: [M]/[C]
  The laser synchronizing detection signal for LDB [M]/[C] is not output after the LDB unit has turned on while the polygon motor is rotating normally.
• Causes: Disconnected cable from the laser synchronizing detection unit or defective connection. Defective laser synchronizing detector. Defective LDB. Defective EGB.
• Remedy: 1. Check the connectors. 2. Replace the laser optics unit. 3. Replace the EGB.

• Code: 240
• Description: LD error
  The IPU (EGB) detects a problem at the LD unit.
• Causes: Worn-out LD. Disconnected or broken harness of the LD.
• Remedy: 1. Replace the laser optics unit.

• Code: 300
• Description: High voltage power output error
  The measured voltage is not correct when the EGB measures each charge output (charge, development, image transfer belt unit, and transfer unit).
• Causes: Disconnected or defective high voltage harness. Defective high voltage power supply. Defective EGB.
• Remedy: 1. Check or replace the harnesses. 2. Replace the high voltage power supply board 3. Replace the EGB. 4. Replace the AIOs.