As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OPS TEST OF EPSU FAULTS EPSU EXT LOAD AFT LT. FOUND CONNECTOR ON SLIDE DISCONNECTED. RECONNECTED IAW AMM 25-62. ONLY SLIDE COVER WAS REMOVED. NO RII STEPS TO C/W. R &R BATTERY ON EPSU (13WL) IAW AMM 33-51. (LP: 8892317). AIRCRAFT WS GROUNDED