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TM 9-2320-364-20-2
2-1397
(1) Loosen six screws and remove
composite light lens and preformed
packing.
(2) Remove blackout marker light lamp.
(3) Set multimeter select switch to
volts dc.
(4) Connect positive (+) multimeter lead
to socket power contact of blackout
marker light socket.
(5) Connect negative (–) multimeter lead
to a known good ground.
(6) Turn ON ENGINE switch
(TM 9-2320-364-10).
(a) If 10 to 14 vdc are not present,
turn OFF ENGINE switch and go
to Step 8 of this Fault.
(b) If 10 to 14 vdc are present,
turn OFF ENGINE switch and go
to Step 7 of this Fault.
VOLTAGE TEST
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.
(1) Set multimeter select switch to ohms.
(2) Is there continuity between blackout
marker light socket ground contact
and a known good ground?
(a) If there is no continuity,
replace front composite light
(Para 7-46).
(b) If there is continuity, replace
blackout marker light lamp
(Para 7-46).
(3) Install blackout marker light lamp.
(4) Install preformed packing and
composite light lens and tighten six
screws.
CONTINUITY TEST
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