Chrysler Conquest 1988 Service Manual page 488

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8-238
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AUDIO SYSTEM
- Troubleshootinn
OPERATION
Audio
NOSNHAC
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When the radio power switch is turned on with
the ignition switch at "ACC" or "ON", current
flows through fuse No. 5, radio, and ground,
causing the radio to operate.
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For an electronically tuned radio, battery voltage
is always supplied for use of the memory and
other functions in the radio.
Power Antenna
ANTENNA MAST EXTENSION OPERATION
* Battery voltage is always applied to the motor
antenna relay through fuse No. 8.
@ When the radio power switch is turned on with
the ignition switch at "ACC" or "ON", current
flows through fuse No. 11, radio, motor antenna
relay, limit switch (UP), and ground.
* As a result of the above condition, current flows
through fuse No. 8, motor antenna relay, motor,
limit switch (UP), and ground, and the antenna
mast starts to extend.
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Once the mast is fully extended, the limit switch
(UP) contacts open to interrupt the circuit, and
the mast stops extending.
ANTENNA MAST RETRACTION OPERATION
When the radio power switch is turned off,
current flows through fuse No. 11, motor anten-
na relay, limit switch (DOWN), and ground.
As a result of the above condition, current flows
through fuse No. 8, motor antenna relay, motor,
limit switch (DOWN), and ground, and the mast
begins to retract.
Once the mast is completely retracted, the limit
switch (DOWN) contacts open to interrupt the
circuit, stopping the mast from further retrac-
tion.
Radio Remote Control
If any desired radio remote control switch is
pressed .when the ignition switch is set at the z
"ACC" or Y'ON" position, current fiows'through e-z
fuse No. 9, horn, radio remote control switch. ._
and ground.
Thecontroller generates the electric signals that
are specific to the pressed switch, and the LED 7;
goes on and off(blinks) accordingly.
The photo diode located on the steeringcolumn =
receives light emrtted from the LED and con- LI
verts- it into electric signals. The signals are
amplified by theamplifrer and sent to the radi$. 'T
The detector inside the radio .decodes the
electric srgnals and causes the radio to_operafe ~z
as commanded by the signals.
TROUBLESflOOTI~G HINTS
Audio
1. Radio does notoperate
--- 1) Clock also does not operate
-
e Check fuse.
2) Clock is operating
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Check radio.
2. One speaker produces no sound
I~~_
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Check that speaker.
Power Antenna ~~
Antenna mast does not
1) Radio also does not
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Check the fuse
2) Radio operates
* ~-Check the motor
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Check the motor
extend/retract
operate
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antenna relay.
antenna.