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Pioneer F-449 Service Manual page 28

Fm/am digital synthesizer tuner

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9.2
PANEL FACILITIES
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PHO.
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TUNING
fF BANU Memaony
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@) POWER
(STANDBY/ON)
switch/indicator
When
the power is on, indicator lights.
ON...
2. eee
When set to ON position, power is supplied and the unit
becomes operationa!
STANDBY
.. When set to STANDBY position, the main power flow is
cut and the unit is no longer fully operational. A minute
flow of power
feeds
the unit to maintain
operation
readiness.
NOTE:
¢ The memory will be backed up so long as the power cord is not
unplugged.
© /f the power cord is unplugged, the memory will be retained for several
days.
(2) MPX (multiplex) MODE button
Mode changes as follows each time this button is pressed:
(f
AUTO
MONO ==
This button does not affect AM reception.
AUTO:
Depending on the broadcast station, STEREO or MONO is automatically
selected.
AUTO | indicator lights up.
NOTE:
When
the signal level is too weak
for reception,
sound output is
automatically muted.
MONO:
To receive stereo broadcasts in monaural.
MONDO | indicator lights up.
NOTE:
This button's status is preset for each station in station memory.
@) RF ATT button
Set this switch to ON when receiving strong FM signals (nearby stations)
to reduce sound distortion ({RF ATT] indicator lights).
Normally, this switch should be set to OFF.
NOTE:
This button's status is preset for each station in station memory.
34
(@) BAND selector buttons
FM:
Press to receive FM broadcasts.
AM:
Press to receive AM broadcasts.
Each time you press this button, the band switches in the following way.
MW
—— LW
® 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.
The selected bandwidth is displayed as follows:
The [NORMAL
or | SUPER NARROW | indicator lights up.
Set to SUPER NARROW
in case of interference from other statins.
NOTE:
This button's status is preset for each station in station memory.
@ MEMORY button
Press to memorize preset stations. The| MEMORY
Jindicator will remain
lit for several seconds. Press the desired STATION CALL buttons to
memorize it during this period.
See page 10 for operational details.
@ TUNING UP/DOWN buttons
Use these buttons to tune in broadcasting stations. Press UP to recive
a station whose frequency is higher than the displayed frequency, ind
DOWN to tune into a lower frequency station.
@) STATION CALL buttons
Use these buttons to preset stations and to receive already preset
stations.

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