As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF SCHEDULED MAINTENANCE TASK FOUND EMERGENCY ISLE LIGHTS AND CEILING EMERGENCY EXIT SIGN LIGHTS IN ZONE WOULD NOT TEST. REMOVED AND REPLACED POWER SUPPLY BATTERY PACK IAW AMM 33-51-07. EMERGENCY EXIT LIGHTS OPS CHECKED GOOD.