SERVICE CONDITION (IR HEADLIGHTS) (cont)

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

SERVICE CONDITION (IR HEADLIGHTS) (cont) - TM-9-2350-256-20_364

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. L Reconnect switch panel to gage panel and miscellaneous switches wiring harness to main switch panel. Install main switch panel (10), flat washer (9), ground lead (8), three lockwashers (7), and three screws (6) to mounting bracket. Disconnect wire 514/515 of switch panel to gage panel and miscellaneous switches wiring harness from headlight and dimmer switch wiring harness. Place red lead of multimeter on male connector 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, repair/replace wire 514/515 of headlight and dimmer switch wiring harness (see paragraph 6-65). If voltage is not present, repair/replace wire 514/515 of switch panel to gage panel and miscellaneous switches wiring harness (see paragraph 6-55 for dual voltage; 6-56 for single voltage). M Reconnect switch panel to gage panel and miscellaneous switches wiring harness to main switch panel. Disconnect wire 514/515 from B.O. SELECTOR switch. Place red lead of multimeter on terminal of switch 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. If voltage is present, repair/replace wire 514/515 of main lighting and B.O. selector switch' wiring harness (see paragraph 6-69). If voltage is not present, go to step N. N Reconnect wire 514/515 to B.O. SELECTOR switch. Disconnect wire 520 from B.O. SELECTOR switch. Place red lead of multimeter in wire 520 and black lead to ground. Turn MASTER switch on, UNLOCK and move main lighting switch to B.O. DRIVE position, and check for voltage. Turn MASTER and main lighting switches OFF. If voltage is present, replace B.O. SELECTOR switch (see paragraph 6- 10). If voltage is not present, go to step 0. 2— 295

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