TM  11-5820-890-20-2 2-59 2.2. TROUBLESHOOTING FLOWCHARTS. Continued Chart 16 RT-A OR RT-B LS 671 DS1 DOES NOT LIGHT (SPLITTER CABLE PRESENT). (Sheet 1 of 1) NOTE: Make sure VAA DS1 is set full ccw. NO YES OPEN ? 1.   SET VAA AND RT-A LS 671 CB1's TO OFF. 2.   REMOVE VAA FROM MB. 3.   REMOVE CX 13417 FROM MB J3 (RT-A LS 671) OR J4 (RT-B LS 671) 4.   REMOVE CX 13292 FROM CX 13417. 5.   CHECK CONTINUITY AT CX 13417 P1, PIN C TO PIN C OF CONNECTOR WHERE CX 13292 WAS REMOVED. NO YES LS 671 DS1 LIT ? REPLACE LS 671 DS1. REPLACED LS 671 DS1 IS BAD. 1.   REMOVE CX 13292 FROM LS 671 J1. 2.   SET LS 671 CB1 TO ON. 3.   MEASURE RESISTANCE AT LS 671 J1, PIN C TO PIN A (GND). NO YES GREATER THAN 20 K OHMS BUT NOT OPEN ? REPLACE LS 671. START REPLACE CX 13417. NO YES OPEN ? REPLACE LS 671. REPLACE CX 13292. 1.   CONNECT CX 13292 TO LS 671 J1. 2.   CHECK CONTINUITY AT CX 13292, PIN C TO PIN A (GND). 1 SH 1 1 SH 1 CX 13292 P1, P2 CX 13417 P1 V U T S R P N M L K J H F E D C B A V U T S R P N M L K J H F E D C B A LS 671 J1 CX 13417 J1, J2