Ricoh M281 Series Service Manual page 452

Service Call 202-270
6.3 SERVICE CALL 202-270
6.3.1 SC200 (ENGINE: IMAGE WRITING)
SC No. Type
SC202-00 D
SC No. Type
SC220-00 D
D255/D256/M281/M282
Error Name/Error Condition/Major Cause/Solution
Polygon Motor Error
After Polygon motor is stabilized, the ready signal is at the H
level for 20 seconds consecutively.

Polygon motor defective

IOB defective

Polygon motor defective
1. Confirm that the connector between laser unit and IOB
is firmly connected. If necessary, connect the connector
all the way in.
2. If the connector is broken, shorted, or grounded,
replace the connector.
3. Replace the laser unit.

IOB defective
1. Update the engine software to the latest version.
2. Replace the IOB.
Error Name/Error Condition/Major Cause/Solution
Leading Edge: LD synchronization detection error
The leading edge LD synchronization detection signal was not
output within the specified time (sec.) while the polygon mirror
motor was operating at normal speed.
Error detection timing; During the startup operation of the
machine or during printing.
6-14 SM