Installation Instructions
9
ELECTRICAL
SYSTEM
81700'82100·82400 WSM,11770
0109F323
IC
Regulator
1.
Check
the continuity
across
the
Bterminal and
the
Fterminal
of
IC
regulator
with
an
ohmmeter.
2.
The
IC
regulator
is
normal
if
the
conducts in one direction
and does
not
conduct in
the
reverse direction.
11IIII
IMPORTANT
..
Do
not
use
a
500
V megger
for
measuring because
it
will
destroy
the
rectifier.
L1
12V
0
J.'W
C095F158
L
~
IG
IC
Regulator Test
1.
Connect the
IC
regulator unit, variable
DC
source, voltmeter,
lamps and etc.
so
that
they form a circuit
as
shown in
the
figure.
(SW1
and
SW2
shall be kept in
the
"OFF" position.)
2. Adjust
the
source voltage
to
12
V.
3.
Turn
SW1
"ON"
check
if
L1
(charge lamp substitution)
is
lit
brilliantly
and
L2
(rotor
coil substitution)
is
dimly.
4.
Then,
turn
SW2
"ON"
while
SW1
is
still turned
"ON".
Check
if
L1
is
turns "OFF" and
L2
is
lit
brilliantly.
5.
While keeping
SW1
and
SW2
in
the
"ON"
position, raise
the
variable
DC
source voltage gradually from 12 V and check
if
the
L2
lamp
is
turned "OFF"
at
a voltage
of
13.9
to
15.1 V
at
25°C
(45
OF).
11IIII
IMPORTANT
It
A
wrong
connection in
the
IC
regulator
may
destroy
the
regulator in a short
time,
therefore,
inspection
of
the
IC
regulator
is
to
be
done
only
after
the
wiring
diagram in
the
maintenance standard
has
been
thoroughly
studied.
[5] LIGHTING SYSTEM
CHECKING
(1)
Combination Switch
1) Connector Voltage
1.
Turn
the
main switch on, and measure
the
voltage
with
a
voltmeter
across
the
connector
B1
terminal and
the
chassis.
2.
If
the
voltage differs
from
the
battery voltage,
the
wiring
harness or main switch
is
faulty.
Combination Switch
1.
Remove
the
panel board, and disconnect
the
combination
switch connector.
2.
Remove
the
combination
switch
(1) and
perform
the
following
checkings 1)
to
6).
Approx. battery voltage
81
-
Chassis
Voltage
(1)
Combination Switch
8177F926
From
Main
Switch
__
--F=r+'t----1
ACTerminal
9-520