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TX-550
Step
Item
to
be
adjusted
Connection
terminal
Instrument required
Adjustment
locations
Adjustment
method
Rating
or
standard
1
Sensitivity
AM
ANT
AM
dummy
antenna
AM SG
630kHz
1080kHz
1440kHz
60dB^i
MONO
400Hz
30%
MOD.
T2
Adjust
T2
at
630kHz,
1080kHz,
1440kHz
to
make
the output
reading
maximum
when
the preset
CH
B-1,
B-2
and
B-3 are received
accordingly.
OUTPUT
ACVM
2
Verification of
Signal
meter
AM
ANT
AM
dummy
antenna
AM SG
1080kHz
lOOdB^
400Hz,
30% MOD.
All
signal quality indicators
light
up.
3
Verification of
Signal
meter
AM ANT
AM
dummy
antenna
Check
that
all
the signal
meters
are turned
off.
4
Verification of
auto-search
AM
ANT
AM
dummy
antenna
AM SG
1080kHz
60dB^i
400Hz,
30% MOD.
Check
that
auto search
reception
is
possible
with the
TUNING
knob.
Tuning
MODE
AUTO
(DIGITAL
CONTROL
SECTION)
Step
Confirmation Item
Connection
terminal
Instrument required
Operation key
Confirmation
method
1
Preset
memory
75Q
FM ANT
FM
SG,
SSG
98.1MHz ± 1kHz
70dBp
STEREO,
L,
RIkHz.
100%
MOD.
FM,
AM
TUNING
MODE
TUNING
{UP
or
DOWN)
MEMORY
PRESET
STATION
P1-P8
1
.
Receive
FM
98.1MHz
by
means
of
auto
search.
2.
Press
MEMORY
key
MEMORY
indicator
flashes
about 5 seconds.
3.
Select
A
with
A/B/C/D/E
SW.
"A"
lights.
4.
Press PI
"1"
lights
and
MEMORY
indicator
goes
off.
MEMORY
indicator
goes
OFF
A1
indicator
lights.
AM
ANT
AMSG
AM
dummy
antenna
1080kHz ± 0.1kHz
80dB^
400Hz,
30% MOD.
A/B/C/D/E
5.
Receive
AM
1080kHz.
6.
Press
MEMORY
key
MEMORY
indicator
flashes
about 5 seconds.
7.
Select
B
with
A/B/C/D/E
SW.
"B"
lights.
8.
Press PI
->
"1
''
lights
and
MEMORY
indica-
tor
goes
off.
MEMORY
indicator
goes
OFF
B1
indicator
lights.
9.
Press A1
and
B1
and check
that
Contentis
read
out properly.
A1
and
B1
light.
2
Tuning
modes
Same
as
step
1
Same
as step
1
FM
TUNING
MODE
TUNING
{UP
or
DOWN)
Tune
to
FM
98.1MHz
and check
that
during
MAN'UMONO
reception
FM
is
forced
monaural.
AUTO
ST
indicator
goes
off.
STEREO
indicator
goes
off.
8
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