Grid Voltage Adjustment - Ricoh A219 Service Manual

8.5 GRID VOLTAGE ADJUSTMENT

ADJUSTMENT STANDARD
DC –910 ± 15 V
NOTE: Normally, each High Voltage Supply Board spare part is adjusted in
the factory before shipment. This adjustment is not required when
the board is replaced.
+
CAUTION!
Very high voltage is applied from the high voltage supply unit
terminals. Pay extreme attention when adjusting the grid voltage.
Make sure that the machine is unplugged before connecting the
multimeter.
1. Remove the rear cover. (See Rear Cover Removal.)
2. Set the multimeter range to dc 1,500 V, and connect the multimeter leads
as shown.
3. Turn on the charge corona using SP9-2.
4. Adjust the grid voltage by turning VRG on the high voltage supply unit.
SM
CÓPIA NÃO CONTROLADA
Adjusting VR
VRG
6-55
CÓPIA NÃO CONTROLADA
COPY QUALITY ADJUSTMENT
A219R562.wmf
SP Mode
SP9-2
A219