Appendix: Troubleshooting Guide
22
SC 2xx (Laser Optics Error)
Polygon motor error 1: ON timeout
202
The polygon mirror motor does not reach the targeted operating speed within 5
sec. after turning on or changing speed
Polygon motor error 2: OFF timeout
203
The polygon mirror motor does not leave the READY status within 3 sec. after the
polygon motor switched off.
Polygon motor error 3: XSCRDY signal error
The SCRDY_N signal remains HIGH for 200 ms while the LD unit is firing.
204
Polygon motor/driver board harness loose or disconnected
Polygon motor/driver board defective
Laser optics unit defective
IPU (EGB) defective
1. Replace the interface harness of the laser optics unit.
2. Replace the laser optics unit.
3. Replace the EGB (Engine Board).
Laser Synchronizing Detection Error: [K]/[Y]
220
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.
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.
222
Disconnected cable from the laser synchronizing detection unit or defective
connection
Defective laser synchronizing detector
Defective LDB
Defective EGB