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16-34 ELECTRICAL SYSTEM
Chargi ng System
•
Do the 1st step regulator circuit test:
○
Connect the test light and the 12 V battery to the regula-
tor/re
ctifier as shown.
○
Check BK1, BK2, and BK3 terminal respectively.
If the test light turns on, the regulator/rectifier is defective.
Repla
ce 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 sam e
manner as specified in t he "Regulator Circuit Test–1st
Step".
○
Apply 12 V to the voltage B R terminal.
○
Check 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 sam e
manner as specified in t he "Regulator Circuit Test–1st
Step".
○
Momentarily apply 24 V to the voltage BR terminal by
adding a 12 V battery.
○
Check BK1, BK2, and BK3 terminals respectively.
CAUTION
Do not apply more t han 24 volts. If more than 24
volts is applied, the regulator/rectifier may be dam -
aged. Do not apply 24 V more than a few seconds.
If 24 volts is applied f or more than a few seconds,
the regulator/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.