Grid Voltage Adjustment - Ricoh FW780 Service Manual

4.7

GRID VOLTAGE ADJUSTMENT

ADJUSTMENT STANDARD: dc --940
NOTE: This adjustment is required when the charge/bias/grid power pack is
replaced.
1. Turn off the main switch and remove the rear cover.
2. Connect the ground terminal of the multimeter to the machine ground, and
connect the voltage terminal to TP2 on the charge/bias/grid power pack.
3. Set the multimeter range to dc 1500 V.
4. Turn on the main switch.
5. Access SP mode and select No. --11.
6. Press the
7. Check the multimeter. If the voltage is not that of the standard voltage, press
the
keys.
8. If the voltage is within that of the standard voltage, press the
SM
key to turn on the grid voltage.
key and then change the voltage using
5-19
10V.
Rev. 2/7/96
and
key.
A163