As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INITIAL AIRCRAFT POWER UP, CABIN EMERGENCY APPEAR WEAK. AFT CABIN EMERGENCY LIGHTS AND EXIT SIGNS SEEM TO BE MOST AFFECTED. PERFORMED QRH CHARGING PROCEDURE AND BATTERIES FUNCTION NORMALLY. CORRECTIVE ACTIONS: COMPLIED WITH EMERGENCY LIGHTING POWER SUPPLY BATTERY EXERCISE PROCEDURE TC NR TC-FLT-33-1001 REV 2 OPS CHECKED GOOD.