8.7 CHARGE CURRENT ADJUSTMENT
ADJUSTMENT STANDARD Adjusting VR SP Mode
DC –400
±
2
µ
A
VRC SP9-2
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.
+
WARNING
Very high voltage is applied from the high voltage supply unit
terminals. Pay extreme attention when adjusting the charge current.
Make sure that the machine is unplugged before connecting the
multimeter.
1. Remove the rear cover. (See Rear Cover Removal.)
2. Disconnect the connector from the CT corona current terminal [A]. Then
connect the ground terminal of the multimeter to the connector [B], and
connect the positive terminal to the CT terminal of the high voltage supply
board as shown in the illustration.
NOTE:
Make sure that the connector [B] is not in contact with the CT
terminal [A].
4. Turn on the charge corona using SP9-2.
5. Adjust the charge current by turning VRC on the high voltage supply
board.
[A]
[B]
A219R564.wmf
Replacement
Adjustment
20 December 1996 COPY QUALITY ADJUSTMENT
6-57
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