TM-9-2320-280-10 HMMWV Operator Manual Download
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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. 3-8