TM 5-5420-226-20-1
DETAILED TROUBLESHOOTING
PROCEDURE
Symptom-6 1.1
SUPPORT SYSTEM - SMOKE GRENADE LAUNCHER
(
.
.
T
(Continued)
Check socket A of harness connector at left
discharger for electrical power.
FirstTechnician (Operator’s Sktion)
l Set MASTER BATTERY switch OFF.
Second Technician (Left Discharger)
l Disconnect harneaa connector from left dis-
charger receptacle.
First Technician (Operator’s Station)
l Set MASTER BATI’ERY switch ON.
l Press and hold LEIW button on pushbutton
unit.
Second Technician (Left Discharger)
l Connect red probe of meter to socket A of
harness connector and black probe to ground.
l Check if meter indicates 18 to 30 volts dc.
First Technician (Operator’s Station)
l Release LEFI’ button on pushbutton unit.
Does meter indicate 18 to 30 volts dc?
GRENADE
7
POWER
~
p“’/J~T:nM
SWITCH
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9
TO VEHICLE
GROUND
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--
we
Check electrical harness
for
continuity.
l
See step 72.
r
4-554.10
Change 1
r
l
Set GRENADE POWER
switch OFF.
l
Set MASTER BAT.
TERY switch OFF.
l
Replaceleft smoke
grenadedischarger(page
TA248698
