SC No. Type Error Name/Error Condition/Major Cause/Solution
SC204-00 D Polygon Motor: XSCRDY Signal Error
During polygon motor rotation, the XSCRDY signal was inactive (H) for
longer than one rotation of the polygon.
• The interface harness to the polygon motor driver damaged or not
connected correctly.
• Polygon motor or polygon motor driver defective
1. Turn the main power OFF/ON.
2. Reconnect the connectors between LD unit and IPU.
3. Check CN586 (a connector with 1 pin) for the polygon mirror
motor from the PSU.
4. Replace the LD unit (Polygon mirror motor).
5. Replace the harness between the LD unit and IPU.
6. Replace the IPU.
7. Replace the PSU (or fuses on PSU).
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC220-01 D Leading Edge: LD1 synchronization detection error: Bk
SC220-04 D Leading Edge: LD1 synchronization detection error: Ye
6. Troubleshooting
786
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