Ricoh A163 Service Manual page 120

4.8.1 Charge Current Adjustment
ADJUSTMENT STANDARD: dc--1000 ± 20 µA
WARNING: Make sure that the machine is unplugged before connecting
the multimeter on the charge/bias/grid power pack.
Pay extreme attention when connecting the multimeter. The
potential of the charge corona terminal becomes --5kV.
1. Connect all the terminals of the current measurement drum to the machine
ground.
2. Disconnect the charge corona terminal of the charge/bias/grid power pack.
3. Connect the multimeter as shown in the illustration.
4. Set the multimeter range at dc 2 mA.
5. Plug in the machine and turn on the main switch.
6. Access SP mode and select No. --10.
7. Press the
8. Check the multimeter. If the voltage is not that of the standard voltage, press
the
keys so that the charge current is dc --1000 ± 20 µA.
9. If the voltage is within that of the standard voltage, press the
A163
key to turn on the charge corona.
key and then change the voltage using
5-22
and
key.
FSM