SYSTEM
Troubleshooting
CHART
A. NOISE
A-l Noise appears at certain places when traveling
(AM).
Is there a particular structure?
I
D o t h e f o l l o
the noise?
Find out the following information from
1. Place
2. Locality conditions (valley, moun-
tain, 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. Extend antenna completely.
I
N o
I
Inspect the vehicle’s noise suppressor
Yes
OK
No
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.
I
If there is more noise than other radios, find out the
receiving stations from the user, and consult with
TSB Revision