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'.
; CD ADJUSTMENT
~
3.
Tracking
Balance
Adjustment
(SVRII)
1. Power on and press the OpenlClose key. {j
2. put on the test disc at turn table and presi. the OpenlClose key
to store the turn table.
3. Connect the oscilloscope to TP3 (TE) and TP4 (GND.).
4. power off, and in a little while act with Power on and press the
both key PlaylClose key and Repeat key.
( Because be able to direct in the play mode. )
5. Playback the test disc with press the Play/Pause key.
6. Shift to the right end at SVR12.
7. Adjust SVR11 so that
the
TE (Tracking
Error) signal wave-
form
of TP3 on the
oscilloscope
is vertically
symmetrical
relative to OV. (See figure
right side)
8. Return the SVR12 to mechanical
center.
9. power off and finish.
* If this adjustment
is imperfect,
become
run away
the
sled
motor (pick-up sending motor),
inferior
playability.
1
II
11500LJS
III
~"-4––L–-4–-4
TP1
(RF)
TP3
(TE)
Ov
..
--
i 4.
Focus Gain
Confirmation
.":
:
1. Connect the storage scope to TP2 (F.E : Focus Error) through
4. Set the output of AF oscillator to 400 Hz, 0.5V rms and connect
;
the Band pass filter. (See BPF Figure)
to TP5 (Focus adjust input) through
resistor 120k ohms.
2. Power on the unit.
.;
,4
3. Play-back the test disc.
5. Confirm so that
the voltage of the TP2 (F.E) signal waveform
on the storage
scope is 0.5V p-p t 3db by through
BPF.
-1
'j
*[f this confirmation
is imperfect,
become weak the mechanical
shock, inferior
playability,
and can not playback
the Disc.
"q
-4
AF OSCILLATOR
MAIN
PCB
OSCILLOSCOPE or STORAGESCOPE
-i .+
i
400HZ
120K
BAND PASS FILTER
~
TP5
0.5V rms
TP2
.:
(FE)
=
1
I
..5.
Tracking
Gain Adjustment
(SVRI 2)
,
1. Connect
the storage
scope to TP3 (T. E : Tracking
Error)
4. Set the output of AF oscillator to 400 Hz, 0.5V rms and connect
through the Band pass filter.
(See BPF Figure).
toTP6 (Tracking adjustment
input) through resistor 100k ohms.
2. Power on the unit.
5. Adjust SVR12 so that
the
voltage
of the
TP3 (T.E) signal
3. playback the test disc.
waveform
on
the
storage
scope
is 0.5V
p-p t
So/o
by
through
BPF.
'If this CONFIRMATION
is imperfect,
become weak the mechanical
shock, inferior
playability,
and can not playback the Disc.
AF OSCILLATOR
MAIN
PCB
OSCILLOSCOPE or STORAGESCOPE
.
400Hz
10OK
BAND PASS FILTER
TP81
0.5V rms
TP3
(TE)
1.
"1
L-.
=
=
Don't remove the adjusting driver for at once after adjustment
of SVR.
Be sure to remove after confirm to indicate a correct value for a few second by instructions of instrument.
-6-
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