TM 9-2320-269-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM - CONTINUED
ONE OR MORE LIGHT SYSTEMS NOT WORKING
NOTE
This is a common procedure for light systems. All systems can be tested in the same
way.
Step 1. Check light switch for corrosion and damage.
Step 2. Check bulb (1) for corrosion,burned filament, and loose fit.
a. Remove bulb (1) and socket (2) using applicable maintenance procedure.
b. If bulb (1) is corroded or burned out, replace.
c. If bulb (1) fits loosely, tighten retaining tabs (3) orreplace socket (2) as needed.
Step 3. Check socket (2) and wires (4) and (5) for corrosion and damage.
a. If socket (2) is corroded or damaged, replace.
b. If wire (4) is corroded or damaged, clean or repair (page 2-142) as needed.
c. If ground surface or wire (5) is corroded or damaged, clean or repair wire (5)
(page 2-142) as needed.
Step 4. Test socket (2) for resistance.
a. Connect ohmmeter to wire (4) and socket (2), or ground wire (5) as needed.
Check meter reading, and disconnect.
b. If meter reads more than zero ohms resistance, replace socket (2).
c. Install bulb (1) and socket (2) using applicable maintenance procedure.
d. If light still does not work, notify Direct Support Maintenance.
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