As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON EMERGENECY LIGHTS TEST THE FOLLOWING LIGHTS ARE NOT ILLUMINATING: SEAT LIGHT OVER SEAT 8 RT SIDE WING INSPECTION LIGHT & RT FWD EMERGENCY LIGHT ABOVE WING ALL OF THE OTHER LIGHTS TEST PROPERLY DURING THE TEST & ALL OF THE LIGHTS WORK WHEN THE BATTERIES/APU ARE ON WITH PAX SAFETY SELECTED ON. SPOKE WITH MCC & THEY INFORMED US THAT THEY WANTED TO CHANGE ALL EMERGENCY BATTIRES, REMOVED 4 BATTERIES & INSTALLED REPLACEMENT BATTIERS IAW AMM 33-50-10, OPS CKD GOOD.