SYSTEM OPERABLE LAMP (DS4) IS NOT ON WHEN SYSTEM IS FUNCTIONING PROPERLY

POWER LAMP DS3 DOES NOT COME ON -- Continued

TM-10-3510-221-24
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TM 10--3510--221--24 0021 00--1/2 blank SYSTEM OPERABLE LAMP (DS4) IS NOT ON WHEN SYSTEM IS FUNCTIONING PROPERLY 0021 00 THIS WORK PACKAGE COVERS: Troubleshooting SYSTEM OPERABLE Lamp (DS4) Is Not When System Is Functioning Properly Fault INITIAL SETUP: Maintenance Level Equipment Conditions Unit Power must be applied at main control enclosure (WP 0010 00). 1. Use maintenance menu to turn on DS4 (WP 0010 00). Does DS4 come on? YES Use maintenance menu to turn off DS4. Return to normal operation. NO Go to step 2. 2. Replace lamp on DS4 (TM 10--3510--221--10). Is lamp on? YES Return to normal operation. NO Go to TYPICAL DC OUTPUT SIGNAL FAULT (WP 0106 00) to check operation of DS4. END OF WORK PACKAGE

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