PROBLEM B: Only the Indicators Are ON That Are Normally ON With the Engine OFF

PROBLEM A. ALL Indicator OFF; Master Fault Light OFF

PROBLEM C: ALL Indicators Are ON; Master Fault Light is OFF

TM-5-3805-258-24-1 Loader Scoop Type DED 4x4 Articulated Frame Steer 2 1/2 Cubic Yard Bucket (CCE) Airborne/Airmobile Manual
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TM 5-3805-258-24-1 9 5 0 B O P E R A T O R ’ S S T A T I O N E L E C T R I C A L T R O U B L E S H O O T I N G 4. Turn disconnect switch “OFF”. With the harness plug removed from the operator’s panel, make a replacement of the fuse. Turn the disconnect switch back “ON” and note the condition of the fuse. Then plug the harness into the operator’s panel. If Fuse Burns Out Before Harness is Plugged In If Fuse Burns Out After Harness is Plugged In Shorted wire in harness. Repair or replace. I Replace operator’s panel. 5. Check the ground connection to the operator panel (Socket 2) with a 5P7277 Voltage Tester. Check for voltage between Socket 1 and 2 in the harness plug that connects to the operator panel. The ground must be good for the voltage tester to show voltage. If Ground Connection Is Good If Ground Connection Is Not Good Replace the operator panel. Use the simplified schematic for power to the opera- tor panel to find the reason for no ground. PROBLEM B: Only the Indicators Are ON That Are Normally ON With the Engine OFF. Possible Causes: a. Bad test switch. b. Bad harness between the test switch and the operator panel. c. Bad operator panel. TROUBLESHOOTING 1. Disconnect the harness plug from the operator panel. Make sure the test switch is in the TEST position. With an 8S4627 Circuit Tester, check for continuity through the test switch to ground, at Socket 2 and 15 in the harness plug. Socket 2 is the ground for the operator panel and Socket 15 goes to the test switch. Continuity No Continuity Replace the operator panel. Go to Step 2. 4-104

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