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17
307-712
ELECTRICAL TESTS
Test Resistor Stud Resistance
Insert
a conductive rod (FF) into the gun barrel (removed
for
the power supply test) and against the metal contact
(GG)
in the front of the barrel. See Fig 9.
Measure
the resistance between the conductive rod (FF)
and
the gun electrode (14). The resistance should be
20
to 30 megohms. If the resistance is correct, refer to the
Electrical Troubleshooting Chart for other possible
causes of poor performance, or contact the nearest
authorized
service agency
.
If the resistance is outside the specified range, remove
the
electrode
(14). See
Electrode Replacement
. Meas
-
ure
the resistance between the conductive rod (FF) and
the
resistor in the inside diameter of resistor stud (17).
The
resistance should be 20 to 30 megohms.
If the resis
-
tance
is correct, the electrode wire is defective and must
be replaced. See Electrode Replacement. If the resis-
tance
is outside the specified range, the resistor is defec
-
tive
and the resistor stud (17) must be
replaced. See
Re-
sistor
Stud Replacement
.
If you still have problems, refer to the Electrical
Troubleshooting Chart for other possible causes of
poor performance, or contact the nearest authorized
service
agency
.
KEY
A Megohmmeter
FF Conductive
Rod
GG
Metal Contact
14 Electrode
20
Gun Barrel
Fig
9
A
GG
14
20
FF