Ricoh D146 Service Manual page 498

Service Call 201-285
SC No. Level
SC204-00 D
SC No. Level
SC220-01 D
SC220-04 D
D146/D147/D148/D149/D150
Error Name/Error Condition/Major Cause/Solution
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
Error Name/Error Condition/Major Cause/Solution
Leading Edge: LD1 synchronization detection error: Bk
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
5-24 SM