Service Call 201-285
D146/D147/D148/D149/D150 5-24 SM
SC No. Level 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
§ Turn the power off/on
§ Replace the LSU or polygon motor
§ Replace the polygon harness
§ Replace the IPU board
SC No. Level 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
The leading edge LD0 synchronization detection signal of the
corresponding color was not output within T1 sec. while the
polygon mirror motor was operating at normal speed.
§ The interface harness to the synchronization detection unit
damaged or not connected correctly.
§ Synchronization detection board defective
§ Beam does not enter photo detector.
§ Abnormality around GAVD
§ IDB (LED driver) defective
§ LDB defective
§ BCU defective
§ Turn the power off/on
§ Replace the LSU or polygon motor
§ Replace the polygon harness
§ Replace the IPU board
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