Grid Voltage Adjustment (Sp9-48) - Ricoh A151 Field Service Manual

6.10.2 Grid Voltage Adjustment (SP9-48)

[A]
ADJUSTMENT STANDARD
DC –880 ± 10 V
NOTE: VR2 on the CC/Grid/Bias power pack spare parts is pre-adjusted.
Usually it is not necessary to adjust VRG when the CC/Grid/Bias
power pack is replaced.
1. Set the multimeter range to dc 1500 V and connect the multimeter leads
as shown.
NOTE: Keep the multimeter leads away from the main board.
2. Turn on the main switch, close the front cover safety switch, and turn on
the grid voltage using SP9-48.
3. Adjust the grid voltage to –880 ± 10 V by turning VR2 on the
CC/Grid/Bias power pack [A].
4. Press the Clear/Stop key and turn off the main switch.
FSM
Adjusting VR
VR2
5-59
SP mode
SP9-48
A151/A152