Yamaha TX-550 - Digital Control Features and Checks; Tuning Lock Feature Check; Last Station Recall Function; Remote Control Operation Verification

TX-550
TX-550
(DIGITAL
CONTROL
SECTION)
1
i
1
step
Confirmation
Item
Connection
terminal
instrument required
Operation
key
Confirmation
method
3
Lock
confirmation
Confirm
that
the frequency
does not
change
by turning
the
TUNING
knob
when
the
LOCK
SW
is
pressed during
STATION
DISPLAY
SW
OFF
mode.
LOCK
indicator lights.
4
IF mode
confirmation
Confirm
that
the
IF
mode
switches
to
MAN'L
automatically
when the
NARROW/WIDE
SW
is
pressed
after the
preset
button 1
is
selected
and AUTO
is selected
with
the
AUTO/MAN’
L
SW. Confirm
that
each
display
changes
according
to
the
changed condition.
Also,
confirm
that the mode
changes
to
NARROW
when
the
antenna
Input is turned
down
slowly
from
the AUTO
WIDE
tuning
mode.
5
STATION
DISPUVY
confirmation
i
“
”
is
displayed
on the display window
when
the ON/OFF
SW of
the STATION
DISPLAY
is
tuned
ON.
After
'*
Is
displayed,
first
column
flashes
and “A”
is
displayed when
the SHIFT
SW
is pressed
(during
AUTO or
MAN'L
tuning).
The
display
changes
A, B, C, ... by turning
the
TUNING
knob
clockwise,
and A,
0, 9,
8,
...
by turning
the
knob
counterclockwise. After
desired
number
or
character
Is selected, the second
column
flashes and “A”
is displayed when
the
SHIFT
SW
is pressed. Select
desired
character
or number for all four columns
and
program
into
the memory.
Confirm
that the
programmed
characters and/or
numbers are
displayed
when
they
are
selected.
(When
the
rear panel SW is
A,
B, or C)
6
Last
station
memory
PRESET
STATION
PI
A/B/C/D/E
1.
Press A1
FM 98.1MHz
is shown.
2.
Turn
POWER
key
OFF.
3. After
5 seconds,
turn
POWER
key
on.
4.
Check
that
A1
content is read
out.
^
A1
indicator lights.
FM 98.1MHz is
displayed.
7
Remote control
function
confirma-
tion
Confirm
that the
A/B/C/D/E can be
switched
and
1
-
8 of
the preset
station
keys can
be
selected
directly
with
the
optional remote
control.
Confirm
that
the A/B/C/D/E can be switched
and
1
-
8 can
be
selected
(up
and
down
station
selection)
with the
RS remote
control
(custom
code 7A
and
7E).
Operating
distance:
more than
7 m
(without
obstacie).