What was found
(LOG 6343836) ACS DROPPED JET BRIDGE POWER FROM A/C. WHEN GND PWR REAPPLIED, FOUND EMERGENCY LIGHTS STUCK ON REGARDLESS OF A/C BATT, GND PWR, AND EMERG LIGHT SWITCH POSITIONS. F/A'S LEFT AFT F/A PANEL EMERG LIGHTS SWITCH IN THE ON POSITION AND DEPARTED AIRCRAFT WITHOUT NOTIFYING MAINTENANCE. LEFT SWITCH OFF TO LET BATTERIES CHARGE. EMERG LIGHTS FULLY FUNCTINOAL AT THIS TIME PER TEST VIA B737 AMM 33-51.