Ricoh SP 3710DN - Page 184

6.Troubleshooting
172
No.
Type
Error Name/Error Condition/Major Cause/Solution
1. Turn the power OFF and ON.
2. Replace the polygon mirror motor/ laser unit.
3. Replace the interface harness of the laser unit.
4. Replace the main board.
No.
Type
Error Name/Error Condition/Major Cause/Solution
SC203
D
Polygon mirror motor off timeout error
The polygon mirror motor does not leave the READY status within 20 sec. after the
polygon mirror motor was switched off.
 Polygon mirror motor/LD driver board harness loose or disconnected
 Polygon mirror motor/LD driver board defective
1. Turn the power OFF and ON.
2. Replace the polygon mirror motor/ laser unit.
3. Replace the interface harness of the laser unit.
4. Replace the main board.
No.
Type
Error Name/Error Condition/Major Cause/Solution
SC204
D
Polygon mirror motor lock signal error
The signal remains HIGH for 0.2 sec. (or 4 times in 50msec of polling) while the
polygon mirror motor is rotating.
Polygon mirror motor/LD driver board defective
1. Turn the power OFF and ON.
2. Replace the polygon mirror motor/ laser unit.
3. Replace the interface harness of the laser unit.
No.
Type
Error Name/Error Condition/Major Cause/Solution
SC220
D
Beam synchronization error
The laser synchronization detection signal for the LD is not output within 0.4 sec.
after the laser unit has turned on.
 Disconnected cable from the laser synchronization detector defective
connection
 Defective laser synchronization detector/ main board
 The beam does not enter the laser synchronization detector
1. Turn the power OFF and ON.
2. Replace the polygon mirror motor/ laser unit.
3. Replace the interface harness of the laser unit.
4. Replace the main board.