Pioneer F-93 Service Manual page 41

F-93
0
SSS button
When SSS is on, SSS indicator lights. If turned on during reception of
AM or when during reception of a manaural broadcast, this will produce
a simulated stereo effect which provides rich ambience.
SSS: Spectrum Simulated Stereo.
NOTE
• If SSS is turned on during FM reception, the MPX MODE automatically
switches to MONO.
• This button's status is preset for each station in station memory.
0AUTO LEVEL button
This lets you select from among six signal threshold levels, to determine
the received signal level above which Auto Tuning will detect a station
and stop. The Signal indicator and Station/Signal display indicate the
set level. If the station's signal level is lower than the set threshold level,
tuning will not stop at that station. Press once and the current level is
displayed. Each subsequent time the button is pressed, the level changes
in order.
C)S-MPX
button
Switch ON when adjacent stations interfere with FM stereo reception
even when the IF BAND is in the SUPER NARROW position. Switching
this on also automatically selects the SUPER NARROW IF BAND, and
AUTO MPX MODE.
NOTE:
• S-MPX only operates during FM stereo reception.
• The setting of this button is memorized together with the station in
the station presets.
®
MEMORY button
Press to memorize preset stations. The MEMORY indicator will remain
lit for several seconds. While the indicator is lit, select the class you
want to memorize with the CLASS button, and press the STATION
CALL button (1 through 10/01 you want to memorize.
C)
BAND selector buttons
FM:
Press to receive FM broadcasts.
AM:
Press to receive AM broadcasts.
0
ANT A/B button
Selects between two antennas connected to the FM antenna A and
B terminals. ANT- [ ' ] or ANT-fl indicator lights up.
NOTE:
This button's status is preset for each station in station memory.
0
RF AU button
Use when FM reception is too strong, resulting in a distorted sound.
The RF ATT indicator lights, and the set attenuator level is indicated
in the station/signal display. Press once and the current level is displayed.
Each subsequent time the button is pressed, the level changes in the
following order:
n
10
dB
15 dB 20 dB
0 dB (RF AU OFF)
Normally, this button should be set to 0.
NOTE:
This button's status is preset for each station in station memory.
®IF
BAND button
Each time this button is pressed the bandwidth of the IF circuit switches
between "normal" and "super narrow" for the FM band and the AM
band.
The selected bandwidth is displayed as follows:
The NORMAL or SUPER NARROW indicator lights LIP.
Set to SUPER NARROW in case of interference from other stations,
NOTE:
The setting of this button is memorized together with the station in the
station memory.
ii
MPX (multiplex) MODE button
Mode changes as follows each time this button is pressed:
'AUTO
MONO
This button does not affect AM reception.
• AUTO:
AUTO indicator lights up.
Depending on the broadcast station, STEREO or MONO is automatically
selected.
STEREO indicator lights up when a FM stereo broadcast is received.
NOTE
When the signal level is too weak for reception, sound output is
automatically muted.
• MONO:
MONO indicator lights up.
To receive stereo broadcasts in monaural,
If there is a lot of noise during stereo reception of a weak signal, you
can reduce the level of noise by switching to MONO.
NOTE:
The setting of this button is memorized together with the station in the
station memory.
°FINE TUNING button
Use this when sound is distorted owing to radio interference even
though you are tuned to your desired frequency. When FINE TUNING
is operating, the FINE indicator lights.
During FM reception, the frequency is changed in 10 kHz steps. (When
FINE TUNING is off, it changes in 50 kHz or 100 kHz steps.)
By changing the frequency slightly with the TUNING 1+, — I button,
noise caused by interference can be minimized.
NOTE.
• When FINE TUNING is on and no station is being received, muting
is applied automatically to prevent noise. Muting is not applied when
a station is received, even if there is much noise and interference.
• Stations tuned using FINE TUNING can be preset.
0
DIRECT button
When this button is pressed, the STATION CALL buttons function as
ten-key number buttons for direct input of the desired reception
frequency.
When FINE TUNING is on during FM reception, frequencies can be
specified in 10 kHz steps. If FINE TUNING is off, frequencies can be
specified in 50 kHz or 100 kHz steps.
g
TUNING (4
-
,
—
) buttons
If you press and immediately release the button, the frequency changes
a step at a time. If you keep the button depressed for a few moments
before releasing it, then auto-tuning operates and stops at the first
station received.
You can set the signal level you want to be regarded as a station with
the AUTO LEVEL button.
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