Ricoh FT556 Service Manual page 178

7. Turn on the main switch and adjust the pre-
cleaning dc current by turning PCC-DC o n
the power pack [A].
the current to stabilize.)
8. Turn off the main switch and select the dc
200 µA range of the digital multimeter.
9. Turn on the main switch and adjust the pre-
cleaning ac current by turning PCC-AC o n
the power pack. (Wait 30 seconds for the
corona current to stabilize.)
10. Turn off the main
11. Repeat steps 6
ac and the dc
optimum range.
12. Turn off the main switch and switch 2 of
the switching board.
(Wait 30 seconds for
switch.
through 10 until both the
currents are within the
31 March '87
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