16-38 ELECTRICAL SYSTEM
Charging System
Regulator Circuit Check
To test the regulator out of circuit, use three 12 V batteries
and a test light (12 V 3 ∼ 6 W bulb in a socket with leads).
The test light works as an indicator and also a cur-
rent limiter to protect the regulator/rectifier from ex-
cessive current. Do not use an ammeter instead of
a test light.
•
Check to be sure the rectifier circuit is normal before con-
tinuing.
•
Do the 1st step regulator circuit test.
○
Connect the test light and the 12 V battery to the regula-
tor/rectifier as shown in the figure.
○
Check the BK1, BK2 and BK3 terminal respectively.
If the test light turns on, the regulator/rectifier is defective.
Replace it.
If the test light does not turn on, continue the test.
•
Do the 2nd step regulator circuit test.
○
Connect the test light and the 12 V battery in the same
manner as specified in the "Regulator Circuit Test-1st
Step".
○
Apply 12 V to the W2 terminal.
○
Check the BK1, BK2 and BK3 terminal respectively.
If the test light turns on, the regulator/rectifier is defective.
Replace it.
If the test light does not turn on, continue the test.
•
Do the 3rd step regulator circuit test.
○
Connect the test light and the 12 V battery in the same
manner as specified in the "Regulator Circuit Test-1st
Step".
○
Momentarily apply 24 V to the W2 terminal by adding a
12 V battery.
○
Check the BK1, BK2 and BK3 terminals respectively.
Do not apply more than 24 V. If more than 24 V is ap-
plied, the regulator/rectifier may be damaged. Do
not apply 24 V more than a few seconds. If 24 V
is applied for more than a few seconds, the regula-
tor/rectifier may be damaged.
If the test light did not light when the 24 V was applied
momentarily to the voltage monitoring terminal, the regu-
lator/rectifier is defective. Replace it.
If the regulator/rectifier passes all of the tests described,
it may still be defective. If the charging system still does
not work properly after checking all of the components
and the battery, test the regulator/rectifier by replacing it
with a known good unit.
NOTICE
NOTICE
Comments to this Manuals
Latest comments: