TM 9--2350--292--20--1
0152 00--4
GRENADE LAUNCHER FAILS TO OPERATE PROPERLY. SOME OR ALL
TUBES FAIL TO OPERATE. ALL OTHER SYSTEMS OPERATE PROPERLY --
CONTINUED
0152 00
H
Is 24 V dc present at all four checks?
CONTINUED FROM STEP G
no
yes
CONTINUED ON NEXT PAGE
1. Reconnect harness 4W108 to firing switch
assembly.
2. Disconnect harness 4W108 from leads
1W112--1 and 1W112--2.
3. Turn MASTER switch and ARM SMOKE switch
ON (TM 9--2350--292--10). Hold firing switches
in.
4. Place multimeter red lead in harness 4W108
lead 1W112--1 and lead 1W112--2 connector
sockets A and C (one at a time) while holding
black lead to ground. Check for voltage.
5. Release firing switches and turn MASTER
switch and ARM SMOKE switch OFF
(TM 9--2350--292--10).
Repair (WP 0290 00) or
replace (WP 0674 00)
harness 4W108. Verify
fault is corrected.
I
Is continuity present at both checks?
no
yes
Place one multimeter lead in each harness
4W108 connector socket B (one at a time) while
holding other lead to ground. Check for
continuity.
Repair (WP 0290 00) or
replace (WP 0674 00)
harness 4W108
connector ground leads.
Verify fault is corrected.
FORWARD