Location And Function Of Controls - Sony ST-JX44L Service Manual

Fm stereo/fm-am tuner
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LOCATION AND FUNCTION OF CONTROLS
Before plugging in or attempting to operate this tuner,
ST-JX44L
ST-JX44L
it is suggested that you familiarize yourself with all its switches and the purpose of each.
Each number in the photo is keyed to the descriptive text.
i POWER switch
Band/frequency-display window
and indicators (See the next page)
Yap Band selector
KD TUNING button
STEREO
g y i
iMUTINGSWiteh
3 MEMORY SCAN button
@ POWER switch
Depress to turn on the power. To turn the power off, press the
switch again.
@
Band selector
Selects the desired
band: FM, MW or LW. Each time the selector
is pressed, the band will change and the selected band wil! be
indicated in the band/frequency-display
window.
© TUNING button
Press either side of this button to change the frequency. Press the
left side [ - ] to go to a lower frequency and the right side { + ] to go
to a higher. To change the frequency continuously until the desired
frequency
is received,
keep the button
depressed.
The frequency
figures will change
rapidly. To change
the frequency
slowly (in
0.05 MHz steps for FM, 9 kHz steps for AM and MW and 1 kHz steps
for LW), press and immediately release the button.
@ Station identification windows
Station labels (supplied) identifying pre-memorized stations can be
placed in these windows.
@ Station preset buttons
To call up a pre-memorized station, press the appropriate button.
@ MEMORY switch
Press to operate
memory
circuit. The
MEMORY
indicator will ap-
pear on the band/frequency-display window for a few seconds in-
dicating that the memory circuit is standing by.
1® Station identification
windows
he Station preset buttons
(a MEMORY switch
@ STEREO switch
This
switch
serves
the dual
purpose
of a mode
and
FM
muting
switch.
Normally
keep
this
switch
engaged
(the MUTING
indicator
il-
luminates) to eliminate FM interstation noise while tuning from sta-
tion to station. The tuner operates in stereo mode for stereo sound
sources
and will be automatically
switched
to mono
mode
for
monaural sound sources.
When you want to tune in a very weak station, or when an FM pro-
gram is too noisy, press the switch to disengage it. (The MUTING in-
dicator illumination will go out.) This will enable the tuner to receive
weak stations, although the stereo feature is sacrificed. in this
case, keep the amplifier volume down
to avoid speaker damage
caused by the interstation noise.
@ MEMORY SCAN button
Press for automatic scanning of the stations pre-memorized on the
station preset buttons.
BAND/FREQUENCY-DISPLAY WINDOW AND INDICATORS
B® MEMORY indicator
MEMORY,
© MEMORY indicator
When the MEMORY switch is pressed, "MEMORY" will appear for a
few seconds indicating that the memory circuit is standing by.
@ Band/frequency-disptay
Permits
reading
the
received
frequency
at
a
glance
from
the
figures.
@ STEREO indicator
This indicator will light when an FM stereo program of sufficient
signal strength is tuned in with the STEREO switch engaged.
@® PRESET button indicator
When the station preset button is pressed, a figure from 1 to 8 cor-
responding to the pressed button will appear.
When
the MEMORY
SCAN
button
is pressed,
the figures
will
change in sequence.
@® MUTING indicator
This indicator illuminates when the STEREO switch is engaged.
@® LOCKED indicator
This indicator illuminates when a signal stronger than the tuner's
muting level is tuned in and locked.
Band/frequency-display
[E} LOCKED indicator
1b} STEREO indicator
STEREO
[¥) PRESET button indicator
MUTING
MHz
LOCKED
[K) MUTING indicator

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