SYSTEM
Troubleshooting
Mixed with noise, only at night (AM).
The following factors can be considered as possible
causes of noise appearing at night.
1. Factors due to signal conditions:
Due to the fact that long-distance signals are
more easily received at night, even stations that
are received without problem during the day
m a y e x p e r i e n c e
in a general
worsening of reception conditions The weaker
a station is the more susceptible it is to
interference, and a change to a different station
I
or the appearance of a beating sound* may
occur.
*Beat sound: Two signals close in frequency
interfere with each other, creating a repetitious
high-pitched sound. This sound is generated not
only by sound signals but by electrical waves as
well.
2. Factors due to vehicle noise:
Alternator noise may be a cause.
Does the noise occur even
when the lights are turned
off?
Is the antenna
properly connected
to
the
radio?
Correctly connect the
antenna.
Yes
the feeder wire and
Tune to a strong station.
l
Tune to a station with a
strona
without
Inspect the alternator noise sup-
pressor (refer to
Does the following measure elim-
inate the noise?
l
Move the harness on the vehicle
side away from the radio body (if
the
harness is not in the proper
position).
N o
No
No
noise than other radios. consult a
service center.
I
TSB Revision