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Page Title:
BACK-UP ALARM DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
VOLTAGE TEST
(1) Set multimeter to volts dc.
(2) Remove four screws and access panel.
(3) Connect multimeter positive (+) lead to
circuit breaker CB2 where wire 20
connects.
(4) Connect multimeter negative () lead to
ACCESS
P
known good ground.
(5) Connect negative battery cable to
ANEL
negative side of battery (Para 8-44).
(6) Turn engine start switch ON, BUT DO
NOT START ENGINE
(TM 10-3930-673-10).
(a) If 24 vdc is present, repair wire 20
(Para 8-48).
(b) If 24 vdc is not present, go to
Step 5 of this fault.
(7) Turn engine start switch to OFF
position (TM 10-3930-673-10).
(8) Disconnect negative battery cable
(Para 8-44).
SCREW
VOLTAGE TEST
B IRCUIT
C
(1) Set multimeter to volts dc.
C
REAKER
WIRE 20
(2) Connect multimeter positive (+) lead to
B2
circuit breaker CB2 where wire 5
connects.
(3) Connect multimeter negative () lead to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-44).
(5) Turn engine start switch ON, BUT DO
NOT START ENGINE
(TM 10-3930-673-10).
WIRE 5
(a) If 24 vdc is present, replace circuit
TR01096
breaker CB2 (Para 8-11).
(b) If 24 vdc is not present, go to
Step 6 of this fault.
(6) Turn engine start switch to OFF
position (TM 10-3930-673-10).
(7) Disconnect negative battery cable
(Para 8-44).
2-69
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