TM
5-5420-226-20-1
DETAILED
TROUBLESHOOTING
PROCEDURE
Symptom-5
1.1
SUPPORT
SYSTEM
- SMOKE
GRENADE
LAUNCHER
(Continued)
Check
harness
for continuity
between
socket
C
of connector
at right
discharger
and socket
A of
connector
at push-button
unit.
First
Technician
(Operators
Station)
l
l
Q
l
l
Second
l
l
Set GRENADE
POWER
switch
OFF.
Set
MASTER
BAITERY
switch
OFF.
Remove
harness
connector
from
pushbutton
unit.
Set
multimeter
to OHMS
XI scale
and
zero
meter.
Connect
black
probe
of meter
to socket
A of
harness
connector
at
pushbutton
unit.
Technician
(Right
Discharger)
Connect
red
probe
of meter
to socket
C of
harness
connector
at
right
discharger.
Check
if meter
indicates
continuity.
Does meter
indicate
continuity?
~
l
nector
to jack
on right
discharger..
l
Replace smoke
grenade
pushbutton
unit
(page
18.1-4),
+E9-
GRENADE
1
POWER
.
SWITCH
_-
UNIT
0cOAoB
RIGHT DISCHARGER
TA248702
4-554.14
Change
1