Description: Polygon mirror motor on timeout error The polygon mirror motor does not reach the targeted operating speed within 10 sec. after turning on.
Remedy: 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.
Code: SC203
Description: 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.
Remedy: 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.
Code: SC204
Description: 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.
Remedy: 1. Turn the power OFF and ON. 2. Replace the polygon mirror motor/ laser unit. 3. Replace the interface harness of the laser unit.
Code: SC220
Description: 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.
Causes: • Disconnected cable from the laser synchronization detector defective connection • Defective laser synchronization detector/ main board • The beam does not enter the laser synchronization detector
Remedy: 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.
Code: SC268
Description: Laser unit thermistor error • The laser unit thermistor detected a temperature lower than -30°C for more than 4 sec. • The laser unit thermistor detected a temperature higher than 105°C for more than 1 sec.
Causes: • Thermistor disconnected (causes an extremely low temperature reading) • Defective harness • Defective main board
Remedy: 1. Turn the power OFF and ON. 2. Replace the laser unit thermistor.
Code: SC491
Description: Bias leak An error signal is detected for 0.2 seconds when changing the development unit.
Causes: • HVP harness damaged and short circuited • Defective the HVP • AIO terminal damaged and short circuited
Remedy: 1. Turn the power OFF and ON. 2. Replace the main board. 3. Replace the transfer roller. 4. Replace the interface harness of the HVP. 5. Replace the HVP.