Pre-Quenching Corona - Ricoh FT7770 Service Manual

7. Pre-quenching Corona

OPTIMUM VALUE:
1. Position the drum shoe [A] in the center end align it with the pre-
quenching corona unit [B] as shown.
2. Turn on the main switch and the pre-quenching corona using SP 11-4.
3. Adjust the pre-quenching corona current by turning VR1 on the pre-
quenching power pack [C].
4. Remove the drum shoe.
Reinstall all parts.
5.
6. Check copy quality.
dc
-7.4±2.0µA
(Let the reading stabilize for 10 seconds.)
5-85
30 April, '89