Sony CDP-750 - S E R V I C T N G N O T E

following
is
a simple adjustment
method.
le
Adjustment
-
5.
6.
Connect oscilloscope
to main
board TP
(TEO).
Adjust RVl04
so that
the
waveform
is
as shown
in
the
figuç
below.
(tracking
gain
adjustment)
Sinct
exact adjustment
cannot
be
performed,
rcmem-
ber
the
positions
of
the
controls
before
performing
the
adjustment.
lf
the
positions
after the
simple
adjust-
ment
arc only a
little
different,
return the controls
to
the
original
position.
oscillo*oge
VOLT/DIV:
I
V
TIME/DIV:2mS
(DC
tengpl
npin
bærd
TPtFEOt
OË--+C+
I
I
TP
(TEOI
æ-
-t
o
Incorrect Examples
(fundamental
wave
appears)
low
trêcking
grain
the set
horizontal.
VOLT/DIV:
t V
TIME/D|V:
2
nS
-0v
the
set is not horizontal,
this adjustment\
,not
be
performed
due
to
the
gravity
against
J
2 axis device.
I
disc
(YED$I8:
Fifth
Selection)
and
press
PLAY
button-
oscilloscope
to
main
amp board
TP
EO).
RVl03
so that the waveform
is
as
shown
VOLT/DIV:
I V
TIME/DIV:
2 mS
the
figure
below.
(focus
gain
adjustment)
VOLT/DIV:
tOOmV
TIME/DIV:
2
mS
-td)mV
-ov
-0v
t Examples
(DC
level
changes
more
than
Adjustment
Location: main
board
adjusted
waveform)
low
focus goin
TP
A.G)
e
TP
îEO)
TP
(TE
II
TP
(FE
I1
TP
RVtUI
(FEOI
BVI04
COMPONENTSIDE
IFRONT)
VOLT/DIV:
tùO
mV
TIME/DIV:
2
mS
-
25O
mv
-0v
VOLT/D|V:
t0O
TIME/D|V:
2
mS
-
IOO
mV
-75
mV
_ov
high
træking
goin
(highar
fundamental mve than for
tow gain!