18.5 DEVELOPMENT BIAS VOLTAGE ADJUSTMENT (SP9-38)
ADJUSTMENT STANDARD
Adjusting VR
SP Mode
DC –500
±
10 V
VRB
SP9-38
NOTE: VRB on the CC/Grid/Bias power pack spare parts is pre-adjusted.
Usually it is not necessary to adjust VRB when the CC/Grid/Bias
power pack is replaced.
1. Set the multimeter range to dc 1,500 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, then turn on
the development bias using SP9-38.
3. Adjust the development bias voltage to –500
±
10 V by turning VRB on
the CC/Grid/Bias power pack [A].
4. Press the
key and turn off the main switch.
[A]
A203R504.img
REPLACEMENT AND ADJUSTMENT
A202/A203
8-56
SM
Содержание A151
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