M239 SMOKE GRENADE LAUNCHER SYSTEM (cont)

M239 SMOKE GRENADE LAUNCHER SYSTEM - TM-9-2350-256-20_406

M239 SMOKE GRENADE LAUNCHER SYSTEM (cont) - TM-9-2350-256-20_408

TM-9-2350-256-20 Carrier Cargo Tracked 6-Ton M548A1 (2350-01-096-9356) M548A3 2350-01-369-6081 Manual
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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. 2-339

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