TM 55-1520-240-T5-2.5 PHAZOR CLOCK ANGLE INDICATOR LIGHTS DO NOTCOME ON (Continued)DISCONNECT PLUG FROM RO-TOR BLADE RECEPTACLE138J1. CHECK FOR 28 VDCBETWEEN ROTOR BLADERECEPTACLE 138J1, PIN P (+)AND GROUND. IS 28 VDCPRESENT?TO0.025INCH?LOCATE OPEN IN WIRES W673-39-20, W639-17-22, OR W552-7-22 BETWEEN BLADETRACK RECEPTACLE 138J1AND BLADE TRACKCB138CB1. REPAIR OR RE-PLACE WIRE AS REQUIRED.CHECK FOR GROUND ON ROTOR BLADE RECEPTACLE138J1. PINS N AND M. ISGROUND PRESENT?LOCATE OPEN IN WIRE W673-GD134A20N OR W673-GD307A20N BETWEEN BLADETRACK RECEPTACLE 138J1,PIN N AND M AND FUSELAGEGROUND. REPAIR OR REPLACEWIRE AS REQUIRED.CHECK GAP BETWEEN MAG-NETIC PHASE DETECTOR ANDINTERRUPTERS. IS GAP 0.015 ADJUST GAP. REFER TO TM 55-1520-240-23.CHECK RESISTANCE ON BLADETRACK RECEPTACLE 138J1BETWEEN PINS E AND A, 8, C,OR D. IS RESISTANCE 900 TO1100 OHMS PRESENT?CHECK CONTINUITY BETWEENMAGNETIC PHASE DETECTORPLUG 138P3, PIN 8 ANDBLADE TRACK RECEPTACLE138J1, PIN E. IS CONTINUITYPRESENT?LOCATE OPEN ON WIRESW639-19-20 BLU OR W673-38-22 BLU BETWEEN MAGNETICPHASE DETECTOR PLUG138P3. AND BLADE TRACKRECEPTACLE 138J1 REPAIROR REPLACE WIRE AS RE-QUIRED.SET STROBEX MODE SELEC-TOR SW TO A PASS A STEELSCREWDRIVER BLADE BACKAND FORTH ACROSS THEMAGNETIC PHASE DETECTORBETWEEN 0.020 TO 0.050INCHES OVER POLE PIECE.DOES FLASH TUBE FLASH?REPLACE MAGNETIC PHASEDETECTOR.LOCATE OPEN IN WIRES W639-18-20 RED, W673-37-22 RED,W673-171-22, W673-172-22,W673-173-22, W673-174-22,OR W673-175-22 BETWEENMAGNETIC PHASE DETECTOR5-2.5TROUBLESHOOT BALANCER(TM 55-4920-402-13&P).END OF TASK5-11
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