As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: DURING OPERATIONAL TEST OF THE EMERGENCY POWER SUPPLY UNIT BY BITE CHECK OF SLIDE SHOWN FAILURE ESCAPE SLIDE LIGHT (EMERGENCY POWER SUPPLY UNIT 10WL) FORWARD LEFT IN PASSENGER CABIN. REMOVED AND REPLACED SLIDE ON DOOR L1 PER AMM 25-62-44-000-002-A AND AMM 25-62-44-400-006-A.