TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
5.
HAND-HELD SPOTLIGHT DOES NOT OPERATE (MODEL B ONLY) (continued).
CONTINUITY TEST
HYDRAULIC
CABINET COVER
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply with
this caution may result in damage
to test equipment or electrical sys-
tem.
(1) Remove five screws and flatwashers
from hydraulic cabinet cover and
remove cover.
POSITION 1
(2) Remove right hand (J3) and left hand
(J4), 40-pin connectors from digital
contoller.
J3
(3) Disconnect hand-held spotlight wiring
39
harness connector (J12) from Digital
POSITION 10
controller wiring harness connector
P11
(P12), at the base of hand-held
spotlight.
(4) Set multimeter to ohms position.
NOTE
POSITION
A reading of infinity indicates an
1 POSITION
J4
open circuit.
10
P2
(5) Connect multimeter between (P2),
position "2", and (J4), position "1".
Check multimeter for continuity.
POSITION 6
(6) Connect multimeter between (P2),
position "6", and (J4), position "10".
Check multimeter for continuity.
(7) Connect multimeter between (P3),
position 10, and (P12), position "1".
Check multimeter for continuity.
(8) Connect multimeter between (P3),
position 39, and (P12), position "2".
Check multimeter for continuity.
POSITION 2
POSITIONS
J12
1 and 2
P12
INSIDE
Change 1
4419117
- 415.5
- -2 4
