Radio; Noise Prevention - Datsun 620 Series 1977 Service Manual

Datsun pick-up 620 series 1977 service manual
Table of Contents

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Body
Electrical
System
RADIO
Noise prevention
Position vehicle
in
an
open
area
away
from
steel
buildings
run
engine
extend
antenna
to
its maximum
length
set
volume
control to maximum
and
set
dial
at
a
medium
point
without
catching broadcasting
wave
Condition
Ignition system
Noise
occurs
when
engine
is
op
erated
Charging
system
Sound of
alternating
current pre
sents
When
accelerator
pedal
is
depressed
or
released
noise
presents
Supplement equipment
When
engine
starts
noise
presents
Noise
still presents
even
after
stop
ping engine
Notes
a
Be
sure
to
locate
capacitor
as
close
as
to
noise
source
and
connect
in
parallel
Probable
cause
Corrective
action
High
tension wire
Install
new
high
tension wire
Ignition
coil
Install
a
0
51lF capacitor
to
primary
side
terminal of
ignition
coil
Note
Be
careful
not to
install
capacitor
to
secondary
or
primary
breaker side other
wise
engine
becomes
improper
Install bond
strap
Distributor
Secure
contact
of carbon electric
pole
and
rotor
Eliminate
sharp tip
on
rotor
pole
or
cap
pole
by
scrubbing
with
a
screwdriver
Check
stagger
between
rotor
and
stator
Alternator
Install
a
0
51lF capacitor
to
charging
termi
nalA
Note
Do not
use a
larger capacitor
If
capacitor
is
installed
to
terminal
F
alternator coil will be
damaged
Regulator
Install
a
0
51lF capacitor
to
IGN
terminal
of
voltage regulator
Operative
noise
of
water tem
perature and fuel
gauges
Install O
IIlF capacitor
between terminal and
ground
wire
Note
If
a
capacitor
having
a
larger capacity
is
used
indication of gauge will be de
viated
b Cut lead
wire
as
short
as
possible
c
Ground wire should be attached
on
the
body
completely
d Make
installation and connection
securely
e
Carefully identify
or
OUT
mark
IN
BE 35

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