Kyocera PE-MF2 Service Manual page 142

3. Appendix: Troubleshooting Guide
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
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switched off.
Polygon motor error 3: XSCRDY signal error
The SCRDY_N signal remains HIGH for 200 ms while the LD unit is firing.
• Polygon motor/driver board harness loose or disconnected
• Polygon motor/driver board defective
204
• 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.
• Disconnected cable from the laser synchronizing detection unit or defective connection
• Defective laser synchronizing detector
222
• Defective LDB
• Defective EGB
1. Check the connectors.
2. Replace the laser optics unit.
3. Replace the EGB.
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