TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l ELECTRICAL DIAGNOSTIC FLOWCHART - KNOWN INFO 1 OPTIONS 1. LOOK. 2. STEIICE-R TEST 90 (Page 2-507). NOTHING WITH THE ROTARY SWITCH TURNED TO STOP, ARE ALL CIRCUITS EXCEPT THE LIGHTS UNPOWERED? POSSIBLE PROBLEMS REASON FOR QUESTION It’s important to verify that there are no shorts which SHORTS OPENS 1 OPTIONS TURN LIGHTS ON AND LOOK KNOWN INFO POWER IS OFF WHEN IT SHOULD BE DO ANY OF THE LIGHTS WORK WITH THE ROTARY SWITCH IN THE STOP POSITION? REASON FOR QUESTlON POSSIBLE PROBLEMS The lights should work with the rotary switch at STOP. If the lights work, power is making it from the batteries through the PCB to the light circuit. OPENS 1 KNOWN INFO T OPTIONS TURN LIGHTS ON AND LOOK. DO ALL OF THE LIGHTS WORK WITH THE ROTARY SWITCH IN ANY POSITION? POWER TO THE LIGHT CIRCUIT IS OK REASON FOR QUESTION There may be problems which only affect one light. rather than all of them. POSSIBLE PROBLEMS tNDtVlDUAL UGHTS MAY HAVE BURNT BULBS, BAD WIRES, ETC. 2-76