TM 5-5420-226-20-1
DETAILED TROUBLESHOOTING
PROCEDURE
Symptom-61.1
SUPPORT
SYSTEM - SMOKE GRENADE
LAUNCHER
(Continued)
) Check harness for continuity between socket A
of connector at right discharger and socket B of
connector at pushbutton unit.
First Technician
(Operator’s
Station)
l Set GRENADE
POWER switch OFF.
l Set MASTER
BA’ITERY
switch OFF.
l Disconnect
harness connector
from push-
button unit.
l Set multimeter
to OHMS XI scale and zero
meter.
l tinned.
black probe of meter to socket B of
harneae connector
at pushbutton
unit.
Second Technician
(Right Discharger)
l Connect red probe of meter to socket A of
harneas connector
at right discharger.
l Check if meter indicates continuity.
n---
—-.––
. . .
.
.-—
I
1.ww2ime~er malca~e continuity?
)
l
Connect harness con-
nector to receptacle on
right discharger.
l
Replacesmoke grenade
pushbutton unit (page
J
18.1-4).
@-
HARNE
PUSHBUTTON
UNIT
m
TA248708
4-554.20
Change 1
