Causes: • Incorrect installation of the charge roller • Loose connection of the terminal BRV on the high voltage unit • Incorrect cable connection on the high voltage unit • Defective high voltage unit • Defective BCU
Code: 311
Description: Power supply unit error
Causes: • Loose connection between the power supply unit and BCU
Code: 380
Description: Development motor error
Causes: • Defective development unit • Defective gears in the drive path • Loose connection • Defective development motor • Defective input output device • Defective BCU