Sony CDP-557ESD - Page 32

CDP-557ESD/707ESD |
Page 8
a
E-F
Balance
Adjustment
E-F
Balance
Adjustment
This
adjustment
should
be
made
when
replacing
This
adjustment
should
be
made
when
replacing
Optical Pick-up. Optical Pick-up.
Procedure:
Procedure:
y
1.
Connect
oscilloscope
to
test
points
TE
and
GND.
1.
Connect
oscilloscope
to
test
points
TEO
and
GND.
2.
Put
set
into
adjustment
mode.
(See
page
7.)
2.
Put
set
into
adjustment
mode.
(See
page
7.)
3.
Turn
POWER
switch
on.
So;
Connect
test
point
TES
with
ground.
4.
Put
disk
(YEDS-18)
in
and
press
¥
button.
Ser),
Turn
POWER
switch
on.
5
Adjust
RV101
so
that
the
traverse
waveform
is
r
5.
Put
disk
(YEDS-18)
in
and
press
button.
symmetrical
above
and
below.
,6.
Adjust
RVIOI
so
that
the
traverse
waveform
is
6.
After
adjustment,
cancel
the
adjustment
mode.
symmetrical
above
and
below.
(See page 7.) 7. After adjustment, cancel the adjustment mode and the
”
s
connection
of
test
point
TES.
(See
page
7.)
”
eee 1
Patan
iid
nl
VOLT/DIV: 1V symmetry
TIME/DIV: Ims . cf
Adjustment Location : digital board Adjustment Location : digital board
TP (GND) RV101 TP (TE)
TP (GND) — RV101 TP (TEO) TP (TES)