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Adjustment Disc: CA-1094 or CA-1094A
1.Connect an oscilloscope to TP3 (FEO) and TPS (GND).
2. insert the disc and set the unit in stop mode.
3.Adjust VR103 so as a DC voltage value on the scope
becomes 0 V.
OV +0.05V
1.Connect an oscilloscope to TP1 (TEO) and TPS (GND).
2. Insert the disc and set the unit in play mode.
3.Set VR102 fully counterclockwise.
4.Adjust VR101
and obtain a waveform
on the scope
becomes
A = B.
A=B+0.1V
JK301
VR102
(TE.G)
\
VR101
¢
VR103
(TE.B)
@)
mS
/
x
Cj
TPALT LLL] Tes
TP1: TEO
TP2: TEI
TP3: FEO
TP4: RFO
TP5: GND
MAIN UNIT
(Component side)
1. Connect INPUT terminal of Lissajous jig and TP2 (TE]).
2. Connect OUTPUT terminal of Lissajous jig and TP1 (TEO).
3. Connect GND terminal of Lissajous jig and TP5 (GND).
4. Connect OSC INPUT terminal of Lissajous jig and output terminal of generator.
5. Connect GND terminal of Lissajous jig and GND terminal of generator.
6. Connect X, Y terminals of Lissajous jig and X, Y terminals of oscilloscope.
7. Connect GND terminal of Lissajous jig and GND terminal of oscilloscope.
8. Adjust the generator so as to obtain a frequency 1,100 Hz, output 5.0 Vp-p.
9. Load the disc and set the unit in play mode.
10. Adjust VR102 to obtain a waveform on the scope as indicated the following
figures.
Generator
Oscilloscope
Main P.W.B.
Y
40k
()
()
ao
PT
wy) ea
ee GND
4700P—=
np
|
[|
)
x
4
J ourPut
cai
SERA
X
10k
Lissajous jig
HM Tracking Gain Waveform
Good
No good
(Center)
(Counterclockwise gain: Max)
O TP1(TEO)
|
No good
|
(Clockwise gain: Max)
15
DCDN425/335
m7
:
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