Crt Control And High Voltage Power Supply Adjustments - HP 3585A Service Manual

Model 3585A
5· 1 0.

CRT Control And High Voltage Power Supply Adjustments

a. Turn the 3585A power off. Place the 3585A on its left side and remove the bottom
cover.
in
b . Place the XYZ board (A67) on a PC extender board. The PC extender should be
screwed place for stability. Leave
c . Unplug the cables from the "Xin" and "Yin" connectors . Using clip leads, short the
"Xin " pins together . Now short the "Yin" pins together.
d. Move A671 1 1 to the "T" position and disconnect A67 J6.
e. Set the oscilloscope controls for:
R 3
XALlGN
R 1
R 1 0 5
R 1 1 6
R 4 6 H i g h Voltage
Adj u stment
all
cables connected to A67. (Support the A67 board if necessary.)
VERTICAL . . . . . . . . . . . . . . . . . . . 1 V IDiv (DC coupled)
HORIZONTAL . . . . . . . . . . . . . . . . . . . . . . . . . . l O",s/Div
=HI=
R 5 9
:
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- C Z 5 -
PATTERN I
- R6 5 - - R 6 3 -
- R6 6 - - C49-
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- C3 3 -
-C70-
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XI
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:
- R7 9 -
- R7 1 -
1 1 6
- C 69-
-
- C
0 0 0 0 0 0 0 0 0 0
5·4.
Figure
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XVZ Board (A6 7 )
Adjustments
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- C5 4-
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- R9 1 -
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R35
5-9