As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERG EXIT SIGN/LIGHT: EMERGENCY SIGN AT ENTRANCE TO LAV (ABOVE SEAT 7) DOES NOT ILLUMINATE WITH AIRCRAFT BATTERY POWER OFF. WORKS OK WITH AIRCRAFT POWER ON. CORRECTIVE ACTION: REPLACED EMERGENCY BATTERY PACK IAW CE680A AMM 33-50-06.OPS CHECK GOOD.