As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PS-1 FOUND SEVERAL EMERGENCY LIGHTS WITHOUT FUNCTION. PLEASE INVESTIGATE. FOUND LIGHTS L1853, L1854 AND L5735 WITHOUT FUNCTION. REPLACED AND TESTED EMERGENCY LIGHT BATTERY PACK M5170 IAW AMM 33-51-04-902-001-001 REV.110. FOUND SATIS.