(m
.-
(
18.1-4).
---
DETAILED TROUBLESHOOTING
PROCEDURE
Symptom-51.1
SUPPORT SYSTEM - SMOKE GRENADE LAUNCHER
FROM STEP
(Continued)
Check socket C of harness connector at push-
1
button unit for electrical power.
First Technician
(Operators
Station)
l Set MASTER
BAITERY
switch OFF.
l Disconnect
harness connector
from push-
button unit.
Second Technician
(Right Discharger)
l tinned
harness connector
to right dis-
charger
receptacle.
First Technician
(Operators
Station)
l Set MASTER
BAITERY
switch ON.
l Connect red probe of meter to socket C of
harness connector
at pushbutton
unit and
black probe ta ground.
l Check if meter indicates
18 to 30 volts dc.
Does meter indicate 18 to 30 volts dc?
l
Set MASTER BAT-
TERY switch OFF.
k
l
Replacesmoke grenade
pushbutton unit (Page
I
I
u
I
/
Y
GRENADE
POWER
L
L
SWITCH
1/
PuSHBUTTON
1
T-
0
+
0
To VEHICLE
GROUND
\
\\,
\\
---
,J/7
RIGHT DISCHARGER
TA24871
1
Change 1
4-554.23