As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EPSU TEST FAULT NOTED ON CIDS FWD L EXT LOAD FWD L MESSAGE FAULT NOTED. UNABLE TO VERIFY WHICH SLIDE IS AT FAULT WITH TESTER BT250003-501 PER MT33-001 DUE TO REMOVE SLIDES 1L AND 1R FOR QUALIFICATION OR INSP ON SHIFT. REPLACED POWER SUPPLY 10WL AND LIGHT ASSY AT FWD CLOSET. SECURED CONNECTOR AT L FWD DOOR SLIDE. EMERGENCY LIGHT TESTED OKAY.