As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT OVERWING EMERGENCY LIGHTS AND EXIT SIGN INOP ON BATTERY POWER. / PERFORMED EPSU BITE TEST~FAILS 12WL AT RT EXIT. REMOVED AND REPLACED 12WL EPSU AND TESTS OK (BITE TEST OK AND LIGHTS ILLUMINATE WITH POWER OFF). REF AMM 33-51-38-000-001-A AND 33-51-38-400-001-A AND 33-51-00-710-001 FOR BITE TEST."