Sony CDP-101 - Focus;Tracking Gain Adjustment

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CDP-101 CDP-101
REFERENCE
Focus/Tracking Gain Adjustment
C201
Phase
Lock
Adjustment
AF
Offset
Adjustment.
11.
Adjust
T401
so
that
frequency
counter
reading
is
4,3218
MHz
+
400
kHz.
12.
The
adjustment
of
RV405
and
T401
affect
each
loscope
or
VOM
other,
so
repeat
steps
8
—
11
two
or
three
times,
range)
frequency
counter
ard
:
finishing with step 11.
C)
audio
amp
board
C7
TP7
0-0
A
frequency
response
analyzer
is
order
to
perform
this
adjustment
exactis
However,
this
gain
has
a
margin,
sc
slightly
off,
there
is
no
problem.
Ther
perform
this
adjustment.:
Normally,
RV205
and
RV301
ar
Procedure:
Procedure:
oscilloscope
DC
'
(DC
range)
oscilloscope
or
VOM
(DC range)
TPO
(R-CH)
Ow-
~y
t
servo
amp
board
—_—_—_—_——
TP3 O—™—_———————_0 +
13.
Connect
frequency
counter
to
servo
amp
board
yt
i
4
R201
(WFCK
1/8).
Or,
connect
oscilloscope
or
|
TP8
(L-CH)
o=—+—5
-
:
:
.
a
+0
oa
Ab
VOM
to
servo
amp
board
1C203
pin
G)
(CLVS).
Ps
O=———0-
ai
Doone
shawn
uelew
to
servo
amp
board
;
=
ape
(ground
point)
)
—_
mechanical
center
mechan.
R201
(WFCK
1/8)
14.
Adjust
RV202
for
the
following
specification:
1,
Put
set
in
adjustment
mode.
(see
page
38)
midway
between
Frequency
counter:
918
+
10
Hz
.
MIN
and
mechan-
Oscilloscope
of
VOM:
DC
3.05
+
0.1
V
2.
Insert
disc
(YEDS-1)
and
press
>PLAY
button.
cal
bak
justment
mode.
(see
page
38)
15.
Connect
oscilloscope
to
servo
amp
board
test
3.
ieee
a
Pe
ea
board
test
1.
Turn
POWER
switch
on,
(STOP
mode)
;
ieee
‘
in
an
round
point).
GFS)
in
the
direction
of
the
arrow.
point
TP1.
:
;
2.
Connect
oscilloscope
or
VOM
to
audio
amp
board
tment
location.)
16.
Confirm
that
the
waveform
is
like
the
one
shown
4.
rane
his
that
the
waveform
is
as
shown
test
points
TP8
(L-CH)
and
TP9
(R-CH).
oat
c
:
:
in
the
figure
below.
MIN
H
;
;
DS-1)
and
press
PPLAY
button.
in
step
5.
a
3.
Adjust
RV5O1
(L-CH)
and
RV502
(R-CH)
so
that
(low
gain)
th.
(high
gain)
If it is not, repeat steps 6 — 16.
17.
After
adjustment,
return
RV101
to
the
original
setting.
10
us
the
oscilloscope
or
VOM
reading
is
DC
0
V.
edule.
loscope
to
servo
amp
board
test
{seen
from
component
side}
(seen
from
Focus/tracking
gain
determines
the
pi
up
(vertical
and
horizontal)
relative
t:
noise
and
mechanical
shock
when
the
operates.
However,
as
these
reciprocate,
the
ad:
the
point
where
both
are
satisfied.
5V
he
oscilloscope
waveform
is
‘“‘H”’
as
Adjustment
Location:
Audio
amp
board
gure
below
Adjustment
Locations:
25V
10203
6
terminal
—
Servo
Amp
Board
—
RV202
{CLVS)
TPO
TP8
RV501
Gee
oe
(R-CH)
(L-CH)
{L-CH)
R201
(WFCK
1/8)
@
Incorrect
Examples
turned
too
far
counterclockwise
times
“L”
is
OK
slowing
items
when
the
waveform
is
ve.
If
it
is
not,
perform
the
adjust-
6-16,
@®
When
gain
is
raised,
the
noise:
v
whe
device
operates
increases.
*
2.5V
RV101
er
saa
01
(GFS)
@
When
gain
is
lowered,
it
is
more
s
OV
mechanical shock and skipping occur:
turned
too
far
clockwise
TP?
When
gain
adjustment
is
off,
the
sym
scilloscope
or
tester
to
audio
amp
appear.
yoint
TP6
and
read
the
voltage
value.
ICOL1LV
Symptoms
Recs
2quency
counter
to
audio
amp
board
OV
©
The
time
until
music
starts
‘P7
and
read
frequency.
becomes
longer
for
STOP
3218
MHz
+
400
kHz
Adjustment
Location:
Servo
amp
board
>DPLAY
or
automatic
low
poi
selection
(kq
pp
buttons
oscope
or
VOM
to
servo
amp
board
,
TP8
pressed.
(Normally
takes
(CLVS).
—
Audio
Amp
Board
—
(ground
point)
)
RV201
TP3
about
2
seconds.)
so
that
the
reading
is
DC
2.7
V.
.
nee
gore
nov
etirtane
:
.
isc
continues
to
rotate
oscope
or
VOM
to
audio
amp
board
for
STOP
>
>PLAY
or
7
2
automatic
selection
(gq
PPI
buttons
pressed.)
so that the reading is DCO +1 V. 7401
® Disc table opens shortly
after
STOP
>
D>
PLAY.
e Susceptible to mechanical
shock.
Even
with
anti-
shock
switch
on,
display
and
sound
skip
when
a
light
shock
is
given.
low or high
tency
counter
to
audio
amp
board
cilloscope
waveform
e
Sound
is
interrupted
dur-
ing
PLAY.
Or
time
count-
er
display
stops
progress-
ing.
TPE
e@
More
noise
during
2-axis
device
operation.
—42—
43