Transfer Corona - Ricoh FT556 Service Manual

31 March '87
Ill. TRANSFER CORONA
OPTIMUM ADJUSTING VALUE:
1. Reinstall the T/S corona unit and the cleaning
unit [A], then position the drum shoe [B] at
the center of the shaft so that the axis of
the current sensing plate is aligned with the
transfer corona wire as shown.
2.
Reinstall the drum stay [C] (1 screw and 1
knob), and return the T/S corona unit to its
original position.
3.
Select the dc 200 µA range of the digital
multimeter [D].
4. Turn on switch 3 of the switching board
plugged into CN106.
5. Lower the PCB plate (2 screws).
3-44
T: DC +20 ± 1 µA
T1: DC +20 ± 1 µA