Causes: • Loose connection • Defective high voltage unit • Defective BCU
Code: 611
Description: Toner end sensor error 1
Causes: • Loose connection of the emitter of the toner end sensor • Defective PCB of the receptor of the toner end sensor • Defective input output device • Defective PCB of the emitter of the toner end sensor • Defective BCU
Code: 612
Description: Toner end sensor error 2
Causes: • Loose connection of the emitter of the toner end sensor • Defective PCB of the receptor of the toner end sensor • Defective input output device • Defective PCB of the emitter of the toner end sensor • Defective BCU
Code: 622
Description: Optional paper feed unit error
Causes: • Loose connection between the IOD and the optional paper feed unit
Code: 623
Description: Duplex unit communication error 1
Causes: • Loose connection • Defective circuit in the duplex unit • Defective BCU
Code: 624
Description: Duplex unit communication error 2
Causes: • Loose connection • Defective circuit in the duplex unit • Defective BCU