As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L2 DOOR WILL NOT ARM. CHECKED EVERYTHING EXTERNAL ALL LOOKS OK. DOOR 2L LININGS REMOVED FOR LUBE OF DOOR. REINSTALLED LININGS. FOUND FLEXIBLE CONTROL CABLE TO ARMING LEVER WITH MOISTURE AT LOWER END. LUBED UPPER AND LOWER ENDS OF CABLE, OPS CHECKED NORMAL. INSTALLED SAME SLIDE AS REMOVED. STOWED DOOR AND SLIDE SAFETIES. INSPECTED SLIDE INSTALLATION AND PERFORMED CIDS TEST.