BLACKOUT MARKER CIRCUIT. (Cont) - TM-9-2350-238-20-10262

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

ELECTRICAL DIAGRAM

Make sure MASTER switch is OFF before repairing electrical

circuits. Failure to observe this warning could result in injury to

personnel.

Remove inoperative blackout marker lamp from service headlamp. Refer to

Step 1.

page 2-601. Set MASTER switch ON. Set panel light switch ON. Unlock

main light switch and place in blackout drive position. Place blackout-

infrared selector switch in blackout position. Place red probe in socket.

Ground black probe. If multimeter indicates about 24 volts, replace lamp. If

multimeter indicates no voltage, set MASTER switch OFF, install lamp and

go to step 2.

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