Sony CFD-444L - 3-2. ELECTRICAL ADJUSTMENTS

cFD-444L
3-2. ELECTRICAL
ADJUSTMENTS
MW/LW
SECTION
FUNCTION:
RADIO
BAND:
MW
oT LW
AM rf
signal
generatof
Put
the lead-wire
anùenna
close
to
tne set.
30oÂ
ampl
itude
modulation
by
4O0
Hz
signal
Output
level:
as
low
as
possible
.
Repeat
the
procedures
in each
adjustment
several
times,
and the frequency
coverage
and
tracking
adjustments
should be finally done
by
the
trimmer
capacitors
PHONES
MW TRACKING ATUUSTMENT
MW FREOUENCY
COVERAGE
ADJUSTMENT
MW
IF
ALIGNMÊNT
Adjust
for a maximum
reading
on
VTVM.
Adjust for
a
maximum
reading
ON VTVM.
Adjust
for
a maximum
reading
on VTVM.
620 kHz
I
1,400 kHz
455 kHz
L3
| CT 1-3
1.650
kHz
| 525 kHz
T2
crl-4
|
T4
I
n
MAIN
BOARDI
16/,@
rYr
l';El
-f|-
IS
LJ
,/
-t(ât
tErt I
I
E qpl
L3
cT2
cT4
|
T5
160 kHz
|
260
kHz 295 kHz
|
145
kHz
Adjust for
a
maximum
reading
on VTVM.
Adjust for a maximum
reading
on
VTVM.
LW TRACKING
ADJUSTMENT
LW
FREOUENCY
COVERAGE
ADJUSTMENT
-14-