Sony CDP-101 - RF PLL Adjustment; IC201 Phase Lock Adjustment; AF Offset Adjustment

Tracking
Balance
Adjustment
Procedure:
servo
amp
board
TP13
2.
Turn
RV101
(GFS)-in
the
direction
of
the
arrow.
point
TP1.
(Refer
to
adjustment
location.)
16.
Confirm
that
the
waveform
is
like
the
one
shown
RV101
(GFS)
3.
Insert
disc
(YEDS-1)
and
press
>PLAY
button.
in
step
5.
O>
oscilloscope
(DC
range)
audio
amp.
board
(ground
point))
;
Note:
Set
the
sweep
time
longer
for
easy
waveform
checking.
A A
10
—
20
Vp-p
OV
a
|
:
A=B
A=B
|
CDP-101
Adjustment
Location;
Audio
amp
board
TP10
{ground
point))
RF PLL Adjustment
Procedure:
oscilloscope
or
VOM
{DC
range)
audio
amp
board
es
servo
amp
board
C)
TP?
©
;
°
FPL
Set
audio
amp
board
:
|
O=
O+-~’
Ae
TPE
O77
to
servo
amp
board
R201
(WFCK
1/8)
1.
Put
set
into
adjustment
mode.
(see
page
38)
4,
Connect
oscilloscope
to
servo
amp
board
test
point
TP1.
5. Confirm
that the
oscilloscope
waveform is
‘““H”
as
shown in the figure below.
4-5V—
=
Ra
sometimes
“L”’
is
OK
®
Confirm
the
following
items
when
the
waveform
is
as
shown
above.
If
it
is
not,
perform
the
adjust-
ments
in
steps
6-16.
A.
Connect
oscilloscope
or
tester
to
audio
amp
board
test
point
TP6
and
read
the
voltage
value.
Reading:
DCO+1V
B. Connect frequency counter to audio amp board
test point TP7 and read frequency.
Reading: 4.3218 MHz + 400 kHz
6.
Connect
oscilloscope
or
VOM
to
servo
amp
board
1C203
pin
(5)
(CLVS).
7.
Adjust
RV202
so
that
the
reading
is
DC
2.7
V.
Connect
oscilloscope
or
VOM
to
audio
amp
board
frequency
counter
servo
amp
board
:
.
10203
©
Frequency
counter:
918
+
10
Hz
(CLVS)
Oscilloscope
of
VOM:
DC
3.05
+
0.1
V
11.
Adjust
T401
so
that
frequency
counter
reading
is
4.3218
MHz
+
400
kHz.
12.
The
adjustment
of
RV405
and
T401
affect
each
other,
so
repeat
steps
8
—
11
two
or
three
times,
finishing
with
step
11.
13.
Connect
frequency
counter
to
servo
amp
board
R201
(WFCK
1/8).
Or,
connect
oscilloscope
or
VOM
to
servo
amp
board
1C203
pin
()
(CLVS).
14. Adjust RV202 for the following specification:
15. Connect oscilloscope to servo amp ‘board test
If
it
is
not,
repeat
steps
6
—
16.
17.
After
adjustment,
return
RV101
to
the
original
setting.
Adjustment
Locations:
10203 ® terminal
(CLVS)
ail) R201
ce
(WFCK
1/8)
—
Servo
Amp
Board
—
RV202
tal
RV101
(GFS)
a
(>)
—
Audio
Amp
Board
—
1C201
F
Procedu
O\
Adjusti
Sc aytae we pierenie Sate
aot te yt pe ee
1,
Put
set
in
adjustment
mode.
(see
page
38)
test
point
TP6.
.
Adjust
RV405
so
that
the
reading
is
DC
0+
1
V.
2.
Ground
servo
amp
board
test
point
TP13.
3.
Turn
RV101
(GFS)
fully
in
the
direction
of
the
arrow.
(see above.)
4.
Insert
disc
(YEDS-1)
and
press
>PLAY
button.
\o
10. Connect frequency counter to audio amp board
test
point
TP7.
5. Connect oscilloscope to audio amp board test
point TP2, TP10 (ground point).
6.
Adjust
RV401
so
that
the
oscilloscope
waveform
is
symmetrical
above
and
below,
relative
to
0
V.
TP6
oscilloscope
waveform
7,
After
adjustment,
remove
the
lead
wire
which
grounded
audio
amp
board
test
point
TP13.
Return
RV101
to
the
original
setting.