Sony ICF-9740W - Adjustment and Alignment Procedures; FM;AM Alignment Steps

| AM|
Set ting:
FUNCTION switch: AM
AM rf signal
generator
Put the lead-wire
antenna close to
the set.
30% amplitude
modulation by
400 Hz signal
| FM |.
Set ting:
FUNCTION switch: FM
FM rf signal
generator
22.5 kHz frequency oan =
deviation by 400 Hz telescopic
signal antenna lead
(modulation turned off
for [F Alignment 2.)
VOM (1)
(range: 0.5—10 V)
|
speaker terminals,
e Repeat the procedures in each adjustment
several times, and the frequency coverage and
tracking adjustments should be finally done by
the trimmer capacitors.
an em
108.5 MHz
ICF-9740W ICF-9740W
AM TRACKING ADJUSTMENT
Adjust for a maximum reading
on VOM Q).
620 kHz 1,400 kHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Adjust for a maximum reading
on VOM @.
FM TRACKING ADJUSTMENT
Adjust for a maximum reading
on VOM QQ).
FM FREQUENCY COVERAGE
ADJUSTMENT
Adjust for a maximum reading
on VOM @.
108.5 Miz
g7.1 Mi
AM IF ALIGNMENT
Adjust for a maximum reading
on VOM Q).
IFT 4
IFT 5 455 kHz
| IFT6 | 6
FM IF ALIGNMENT 1
(10.7 MHz with modulation)
Adjust for maximum
reading on VOM ().
VOM @)
(range: 0.5-2.5V de)
Adjust for 0V reading on
VOM @).
FM IF ALIGNMENT 2
(10.7 MHz with no modulation)
R78
R21