SECTION V: TROUBLESHOOTING
TM 9-2350-256-20
WARNING
Ensure all launcher tubes are empty before
performing
maintenance
on
launcher
system. Serious injury or death may result
if tubes launch accidentally.
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts a metal
surface a direct short may result in instant
heating of tools, damage to equipment, and
injury or death to personnel.
A
Remove lens from lamp on M239 launcher power switch
box assembly. Remove lamp. Place red lead of
multimeter in lamp socket and black lead to ground.
Turn MASTER and ARM SMOKE switches ON and
check for voltage. Turn MASTER and ARM SMOKE
switches OFF. If voltage is present, replace lamp (see
paragraph 15-1). If voltage is not present, go to step B.
B
Disconnect smoke grenade launcher system wiring
harness from M239 launcher power switch box. Place
red lead of multimeter in socket A of harness and black
lead to ground. Turn MASTER switch on and check for
voltage. Turn MASTER switch OFF. If voltage is
present, go to step D. If voltage is not present, go to
step C.
C
Place red lead of multimeter in accessory panel outlet
and black lead to ground. Turn MASTER switch on and
check for voltage. Turn MASTER switch OFF. If
voltage is present, repair/replace wire from accessory
outlet to arming switch assembly of smoke grenade
launcher system wiring (see paragraph 6-91). If voltage
is not present, troubleshoot bilge pump system and
electrical accessories panel power outlet.
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