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CD ADJUSTMENT
Electrical
Adjustment
Preparations
for Adjustments
So far we have
presented
explanations
regarding
compact
Measuring
instruments,
tools
and filter
disc player handling, notes prior to repair, handling the pickup
(1)
Test
disc. : YEDS 18 (Sony)
and disassembly of
fhe
unit. Be $w'e to carefully
read
these
(2)0sclllIwMpt3:SS5711
(1OMHZ or dua[
phenomenon)
instructions before making any adjustments.
or Memoryscope:
DSS6521 (Storagescope)
r
Notes :a.
b.
c.
1.
Initial
(3)
Screw drivers (non-metalic) for adjustments
The
adjustments
can
be
using
the
equipment
produced
by
other
manufactures
provided
that
the
performance
of that equipment
corresponds
to that of the above listed models.
Use a 10:1
probe for observing signals on the
oscilloscopeand storage scope.
Test disc is subject change without notice.
set
up
1. Set the SVR11 to the
I
e
SVR1l
Initial
set
(Mechanical
center)
2.
Tracking
Balance
Adjustment
(SVR11)
1. Connect
the
oscilloscope
to
TPI 03 (TE) and TP104
5. Adjust SVR11 so that the
TE (Tracking
Error)
signal
(GND.).
waveform of
TP103 on the oscilloscope
is vertically
sym-
2. Turn
on the power of
the unit. Insert test disc .
metrical relative to OV. (See figure as follows)
3. Playback
the
test
disc.
4. Continuously
press the forward
ward search ~ button to do it,
TP103
TP3
(TE)
Ov
Note:
If this adjustment is imperfect, the sled motor (pickup
search N
or back-
sending motor)
will
run and normal play will be dis-
abled.
44 SEARCH
Fig.1
SEARCH W
#
Other Adjustment
(SVR11)
Ov
TP1
(RF)
TP3
(TE)
44 SEARCH
Ov
F!g.2
1.
2.
3.
Connect the oscilloscope
to TP103 (TE) and TP104
4.
Press the memory
switch,
(GND.).
5. Adjust
SVR11 so that the
TE signal (Traverse)
waveform
Press the Open/Close switch and Memory switch.
And
of TP103 on the oscilloscope is vertically symmetrical rel-
turn on the power of the unit
ative to OV. (See figure as above Fig.2 )
Playback the test disc.
For Play mode. Press the Play/Pause switch,
-1o-
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