As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SVC CHECK WALK AROUND FOUND BOTH LEFT WING EMERGENCY EXIT DOOR EMER LIGHTS INOP, LEFT WING AFT WING ROOT EMER LIGHT INOPERATIVE. R & R BATTERY PACKS AT ROWS 11ABC AND 25ABC REF B737 AMM 33-51. ALL DISCREPENT LIGHTS NOW OPERABLE.