As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, EMERGENCY EXIT LIGHTS ON DOOR 4L NOT WORKING ON TEST. PERFORMED CONNECTOR CLEANING (33WL) IAW AMM 33-51-11. PERFORMED OPERATIONAL TEST OF THE CABIN EMERGENCY LIGHTS IAW AMM 33-31-11-400-00-A STEP 4F. TEST IS OK.