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9S-LX510
PS-LX510
se
3-2.
ELECTRICAL
ADJUSTMENT
Gain/Offset Adjustment
1.
Connect
the pattern (A) to (B), and
apply
regulated power supply (OV DC) to point
©.
2.
Connect
a VOM
to the emitter of Q104, and
adjust
the regulated
power
supply voltage for
1V DC.
3.
Adjust RV101 (H1) and RV102 (H2) so that
the terminal voltage of IC103 () (H1) and
q@) (H2) are 4Vp-p.
......
Gain Adjustment
4.
Adjust RV103
(H1) and RV104
(H2) so that
the terminal waveforms of IC103 9) (H1) and
@
(H2) are as shown
below (or so that DC
potential isOV).........
Offset Adjustment
5.
After
adjustment,
remove
the lead
wire
con-
necting pattern (A) to
7
fe
SE
re
at
a
Te
Wey
Se
ee Oe
ao
ge
Ga
7
|
Note: Set the sweep time longer for easy wave-
|
|
form checking.
|
|
oscilloscope
|
|
l
|
f
A
ND
]
4Vp-p
OV
-
&
aT
|
|
|
el
|
A=B
|
[ai
SS
ee i ees ites ao,
es
ed en
ee
ee set he fea
4
10E2|
10k
1000nF
16V
|
|
!
|
Ofset Adjustment
Se? OMDNG
wrong
good
(AT VTVM Ov)
RV103, 104
PS-LX510
—Servo Amp Board—
VOM
(de 3 V range)
lead wire
(jumper)
regulated
power supply
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