As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND EMERGENCY LIGHT TEST FAILS WITH L FWD EPSU FAIL AND RIGHT SLIDE EMERGENCY FAIL MESSAGES. REAPPLIED SYSTEM POWER AND CHECKED CHARGING UNITS AND BATTERIES. ALL OK. RESEATED BATTERIES ON CHARGING UNITS. EMERGENCY LIGHTING CHECKS OK.