TM 5-5420-226-20-1
DETAILED TROUBLESHOOTING
PROCEDURE
Symptom-54
SUPPORT SYSTEM - FIRE EXTINGUISHER
FROM
STEP
?
(Continued)
4
I
I
Check
fire extinguisher
relay circuit
breaker
for
I
Seconcl Technician
(Front
of Crew
Cornpartrnent)
I
~
WARNING
—
When
disconnected,
do
not
allow
battery
ground
straps
to come
into
contact
with any metal surface.
l
First
l
l
l
l
Disconnect
three
battery
ground
straps
(page
10-268).
Technician
(Commander’s
Station)
Set meter
to OHMS
X 1 scale and “zero”” meter,
or use
STE/ICE
Test
No. 91 (page
4-83).
Disconnect
two harness
connectors
(CKT
975) from
fire extinguisher
relay circuit
breaker.
Connect
red probe
of meter
to one contact
and
black
probe to other ~ontact
of tire extinguisher
relay circuit
breaker.
Check
if meter
indicates
continuity.
Does meter
indicate
continuity?
—
\QJ
FIRE EXTINGUISHER
RELAY CIRCUIT
BREAKER
Replacefire extinguisherrelay
circuitbreaker(page 10-165).I
—.
TA107265
4-576
