TM   10-3930-643-20 ELECTRICAL  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 5-8. Instrument   Panel   Troubleshooting. MALFUNCTION TEST OR INSPECTION CORRECTIVE   ACTION w. BULB CHECK SWITCH DOES NOT OPERATE. NOTE Before   proceeding   with   continuity   test,   refer   to   paragraph   2-13   for i n i t i a l    s e t u p    i n s t r u c t i o n s. Test   the   continuity   of   the   bulb   check   switch. Connect m u l t i m e t e r    t o terminals   at   the   back   of   switch. Engage   switch   to   ON   position. If   the   multimeter   needle   does   not   move,   the   circuit   does   not   have continuity.   Replace   bulb   check   switch,   refer   to   paragraph   5-20. 5-75

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