SERVICE CONDITION (IR HEADLIGHTS) (cont)

SERVICE CONDITION (IR HEADLIGHTS) (cont) - TM-9-2350-256-20_360

SERVICE CONDITION (IR HEADLIGHTS) (cont) - TM-9-2350-256-20_362

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 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. H Reconnect headlight and dimmer switch wiring harness to dimmer switch. Disconnect wire 514 of headlight base assembly at connector. Place red lead of multimeter in wire 514 and black lead to ground. Turn MASTER switch on, UNLOCK and move main lighting switch to B.O. DRIVE position, B.O. SELECTOR switch to IR, press dimmer switch, and check voltage. Turn MASTER, main lighting, B.O. SELECTOR, and dimmer switches off. If voltage is present, repair/replace wire 514 of headlight base wiring harness (see paragraph 6-64). If voltage is not present, repair/replace wire 514 of headlight and dimmer switch wiring harness (see paragraph 6-65). I Place red lead multimeter in socket C of wire 514/515 and black lead to ground. Turn MASTER switch on, UNLOCK and move main lighting switch to B.O. DRIVE position, B.O. SELECTOR switch to IR, and check for voltage. Turn MASTER, main lighting, and B.O. SELECTOR switches off. If voltage is present, replace dimmer switch (see paragraph 6-25). If voltage is not present, go to step J. 2— 293

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