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9-24
1 9 7 7 PONTIAC SERVICE MANUAL
RADIO
GENERAL DESCRIPTION
Eight types of radios are avilable: AM Pushbutton, AM
Stereo/Tape, AM/FM, AM/FM Stereo, AM/FM Stereo/
Tape, AM/FM Stereo with Digital read out, AM/FM Stereo
with integral CB, and bracket mounted CB. See Fig.
9-23
for
series application.
The outer left knob operates the on-off switch and
volume control, and the inner left knob operates the tone
control. The right hand outer knob controls manual tuning.
To set a pre-selected station, first find the desired station
using the manual tuning knob. Pull a push button all the way
out, and then push in. That station can subsequently be
selected by pushing the button. On AM-FM radios, either five
or ten stations may be selected. See Fig. 9-23.
On AM or AM/FM radios equipped with an optional
rear seat speaker, a variable type control located behind the
manual tuning knob adjusts the relative volume of the front
and rear speakers simultaneously. As the control is turned
clockwise, the volume of the rear speaker increases and the
volume of the front speaker decreases. As the control is
turned counterclockwise, the volume of the rear speaker
diminishes and the volume of the front speaker increases.
After the desired relative speaker volume is obtained, both
speakers total volume can be regulated by the volume control
knob.
On cars equipped with stereo radios or stereo tape
player, the inner right knob controls the relative volume from
the individual channel speakers. This control should be
adjusted for the most pleasing stereo separation between the
front and rear speakers.
AM/FM MONAURAL
This radio is identical to the AM radio as far as the
operation of the on-off and volume control, tone control,
manual turning control, and push buttons are concerned. The
FM automatic frequency control circuit automatically keeps
the receiver on frequency.
AVAl LAB1 LlTY
Fig.
9-23
Radio Availability
.
RADIOITAPE
AM
AM-FM
AM-FM STEREO
AMRAPE
AM-FM STEREOITAPE
DIGITAL
AM-FMISTEREO
23 CH. CB
HANG ON
23 CH. CB
CONSOLE MOUNTED TAPE
OTHER INFORMATION
A & G
X
X
X
X
X
X
(AG & GI
X
(AG & G)
X
10 STATION
(5 AM, 5 FM)
TUNER
AM-FM BAND
SWITCH LOC.
NUMBER OF
STEREO
SPEAKERS
B
X
BELOW
DIAL
4
2 FRONT
2 REAR
X-FIRE
A
ON AM-FM
TAPE &
DIGITAL
CLOCK RADIO
ABOVE
DIAL
3
1 FRONT
2 REAR
ON SAME CH.
B
X
X
X
X
X
X
X
X
F
X
X
X
X
X
X
X
BELOW
DIAL
2
1 FRONT
1 REAR
4344
F
NO. 1
BUTTON (AM)
NO. 5
BUTTON (FM)
2
1 FRONT
1 REAR
H
X
BELOW
DIAL
2
1 FRONT
1 REAR
H
X
X
X
X
X
X
X
X
X
I
X
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