Drum Current Adjustment - Ricoh A183 Service Manual

7.5 DRUM CURRENT ADJUSTMENT

ADJUSTMENT STANDARD
DC –750 ± 2 µA
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 drum current.
Make sure that the machine is unplugged before connecting the
multimeter.
1. Remove the upper cover and the exposure glass. (See Exterior
Cover/Exposure Glass 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 other 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].
SM
COPY QUALITY ADJUSTMENT
[A]
Adjusting VR
VTCT
6-39
[B]
A184R542.wmf
SP Mode
SP9-2
A183/A184