Causes: Scanner calibration failed (scanner cannot find the home position).
Remedy: • Cycle the power OFF/ON. • Check the connection. • Replace the scanner unit.
Code: 202
Description: Polygon Motor On Timeout Error No lock signal was received within 10 sec. after the polygon motor was turned on.
Causes: • The polygon motor driver I/F harness is loose, broken, or defective. • The polygon motor is broken or defective.
Remedy: • Cycle the power OFF/ON. • Replace the I/F harness. • Replace the polygon motor. • Replace the laser unit.
Code: 203
Description: Polygon Motor Off Timeout Error The lock signal did not go inactive within 20 sec. after the polygon motor was turned off.
Causes: • The polygon motor I/F harness is loose, broken, or defective. • The motor driver board is defective. • The motor is defective.
Remedy: • Cycle the power OFF/ON. • Replace the I/F harness. • Replace the polygon motor. • Replace the laser unit.
Code: 204
Description: Polygon Motor Lock Signal Error Four samplings within 200 ms indicate that the polygon motor lock signal remained inactive beyond the prescribed number of revolutions.
Causes: • The I/F harness between the motor and driver board is loose, broken, or defective. • The driver board is defective. • The motor is defective.
Remedy: • Cycle the power OFF/ON. • Replace the I/F harness. • Replace the polygon motor. • Replace the laser unit.
Code: 220
Description: Beam Synchronization Error The top cover is closed and locked, and the polygon motor is locked, but laser synchronization could not be achieved within 400 ms.
Causes: • The I/F harness of the LDB is loose, broken, or defective. • The polygon motor is locked. • The angle of incidence of the laser beam and photo-detector is not correct.
Remedy: • Cycle the power OFF/ON. • Replace the I/F harness. • Replace the polygon motor. • Replace the laser unit. • Replace the main board.
Code: 491
Description: Bias Leak A bias leak has occurred for the drum charge, development charge, or transfer charge. PWM signals are sampled at 20 ms intervals. This SC is issued if 10 PWM samplings within 200 ms are abnormal.
Causes: • The HVP harness is loose, broken, or defective. • The HVP board is defective. • The AIO terminal is defective.
Remedy: • Cycle the power OFF/ON. • Check all the harness connections of the HVP. • Check the spring-loaded AIO terminal installation behind the HVP. • Replace the HVP.