As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DAILY SERVICE, FOUND MAIN CABIN INTERVAL EMERGENCY EXIT LIGHT AT L-1 MAIN ENTRY DOOR (SYSTEM INDICATOR LED) INOPERATIVE. DURING TROUBLESHOOTING, FOUND THE BATTERY PACK AT FAULT. REMOVED AND REPLACED THE BATTERY PACK, OPS CHECK OK. (W)