8-376
CHASSIS ELECTRICAL
-
Radio and Tape
Player
CHART
A. NOISE
A-l
Noise appears at certain places when traveling (AM).
No
Yes
Is
there a particular structure?
Do the following measures
OK
I
eliminate the noise?
L
J
Yes
I
Find out the following information
from the user:
\
2. Locality conditions (valley,
mountain, etc.)
3. Name and frequency of stations
affected by noise
1. Change to a different station
with a strong signal to boost
resistance to interference.
2. Suppress high tones to
reduce noise.
3. On a vehicle with a pole antenna,
extend the antenna all the way.
I
No
c
If due to vehicle noise:
It may not be possible to prevent
noise if the signal is weak.
If due to external noise:
In almost all cases, prevention on
the receiver side is impossible.
Weak signals especially are
susceptible to interference.
If there is more noise than other radios, find out the
noise conditions and the name and frequency of the
receiving stations from the user, and consult with
the service center.
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