Ricoh B245-62 Service Training page 55

Cleaning Roller
Drum Charge Roller
The roller is always in contact with the drum
The drum charge roller is at -1700 V for printing
This voltage can be changed using SP-2001-1
The drum surface voltage is -950 V
Slide 55
This copier uses a drum charge roller to charge the drum. The drum charge roller always
contacts the surface of the drum to give it a negative charge of –950 V. The high voltage
supply board gives a negative charge of –1700 V to the drum charge roller through the
screw and terminal plate. This voltage can be changed using SP 2001 1.
Drum Charge Roller
Screw
55
B245-62 / PD-C4
Terminal Plate
Drum