Engine Sc - Ricoh M116 Service Manual

Service Call Conditions

6.1.2 ENGINE SC

SC 2xx (Laser Optics Error)
Polygon motor on timeout error
202
The polygon mirror motor does not reach the targeted operating speed within 10
sec. after turning.
Polygon motor off timeout error
203
The polygon mirror motor does not leave the READY status within 20 sec. after
the polygon mirror motor switched off.
Polygon motor lock signal error
The signal remains HIGH for 200 ms (or 4times in 50msec polling) while the
polygon mirror motor is rotating.

Polygon motor/driver board harness loose or disconnected
204

Polygon motor/driver board defective

Laser optics unit defective
1. Turn the main power off/on the machine.
2. Replace the interface harness of the laser optics unit.
3. Replace the laser optics unit.
Beam Synchronize error
The laser synchronizing detection signal for LD is not output within 400msec after
the LD unit has turned on.

Disconnected cable from the laser synchronizing detection unit or defective
connection
220

Defective laser synchronizing detector

Defective LD

Defective ECB
1. Check the connectors.
2. Replace the laser optics unit.
3. Replace the ECB.
M116/M117 6-2 SM