TM 9-2320-280-10
Table 3-1. Troubleshooting (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AMBULANCE
26. ALL CEILING WHITE UGHTS, BLACKOUT UGHTS, AND SPOTLIGHTS FAIL TO
ILLUMINATE
Step 1. Check that interior light switch on control box is in proper position.
Place interior light switch in proper position (para. 2-61).
Step 2. If white light illumination is required under blackout conditions, make
sure front door, rear doors, and rear steps are closed.
Step 3. For white illumination with front door, rear doors, and rear steps
opened, set the vehicle light switch to “service drive" (para. 2-13).
Step 4. Check that left and right lighting fuses are serviceable.
Replace fuses if blown (para. 2-61).
Step 5. Other causes.
Notify unit maintenance.
27. LEFT OR RIGHT CEILING WHITE LIGHTS AND BLACKOUT LIGHT FAIL TO
ILLUMINATE
Step 1. Check that left lighting or right lighting fuse is serviceable.
Replace fuse if blown (para. 2-61).
Step 2. Other causes.
Notify unit maintenance.
28. CEIUNG WHITE UGHT OR BLACKOUT UGHT FAILS TO ILLUMINATE
Step 1. Inspect bulb for serviceability.
Replace bulb with known serviceable bulb (para. 3-28).
Step 2. Other causes.
Notify unit maintenance.
29. SPOTUGHT FAILS TO ILLUMINATE
Step 1. Perform malfunction 26, steps 1 through 3.
Step 2. Check if ceiling lights illuminate. If dome lamps illuminate, check to
ensure spotlight switch is in proper position.
Place spotlight switch in proper position (para. 2-61).
Step 3. Inspect bulb for serviceability.
Replace bulb with known serviceable bulb (para. 3-28).
Step 4. Other causes.
Notify unit maintenance.
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