C 1, TM 9-2350-230-12
TABLE 8-4. TROUBLESHOOTING - CONTINUED
Malfunction
Probable cause
Corrective action
CONVENTIONAL WEAPONS
ELECTRICAL SYSTEM -
Continued
110. READY lights fail
f. Gun-launcher out of battery.
f. Operate hand pump to bring
to illuminate -
gun-launcher into battery.
Continued
Then check safe-to-fire
indicator to ensure correct
recoil cylinder pressure
g.
Recoil mechanism pressure
g. Bleed off pressure until
too high
safe-to-fire indicator
switch plunger is in
proper position (fig. 3-2).
111. Gun-launcher mis-
Firing probe electrical
Tighten electrical connector.
fires with CONV or
connector loose.
MISSILE ready
lights illuminated.
112. M73 coaxial machine
a.
Fire control switch not in
a.
Place switch in COAX
gun fails to fire
COAX position
position.
b. Harness connectors loose
b. Tighten connector on
machine gun and con-
nector J5 on relay box
(fig. 10-14).
113. Gun-launcher breech
a. Loader's control box SAFE-
a. Place switch in SAFE
fails to open or
READY switch not in position.
close electrically
SAFE position.
b. Fire control selector switch b. Place switch in CONV or
in OFF position
MISSILE position.
c. Harness connectors loo se
c. Tighten all connectors on
gun-launcher, relay box,
loader's control box,
accessory box, and turret
and weapon control
selector.
114. Telescope reticle
a. Fire control selector
a. Place switch in CONV or
dimmer box con-
switch in OFF position
MISSILE position.
ventional or missile
reticle fails to
b.
Defective lamp
b. Replace lamp.
illuminate.
8-37
