As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TWO EMERGENCY LIGHTS DO NOT ILLUMINATE IN THE ARM POSITION. NR 1 BELOW THE LAV SEAT LIGHT NR 2 BULKHEAD BEHIND SEAT 7 LIGHT. WHEN SWITCH WAS MOVED FROM OFF TO ON POSITION, A AUDIBLE POPPING NOISE WAS HEARD. AFTER WHICH ALL THE EMER LIGHTS WENT OUT. REPLACED EMERGENCY BATTERY PACKS. OPS CHECK GOOD. IAW AMM 33-55-06