As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING CIDS TEST MAINTENANCE FOUND FAULT EXTERIOR LT 1/EPSU (10WL) FWD L. MAINTENANCE DETERMINED THAT THE L1 DOOR SLIDE RAFT ASSEMBLY WAS CAUSING THE FAULT AND REPLACED IT PER JOB CARD 26L0025011. A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED WITH NO FAULTS NOTED.