As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - ABORTED TAKEOFF - FLT 8643 - "C" - ON TAKEOFF FROM LAS ENROUTE TO SFO AT 110 KTS THE L1 DOOR MASTER CAUTION LIGHT ILLUMINATED, TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO GATE. MAINTENANCE TROUBLESHOT L1 DOOR AND FOUND THE TARGET BRACKET AND ROLLER NUT LOOSE, BRACKET AND NUT WERE ADJUSTED AND SECURED IAW BMM 52-11-00-501, DOOR SYSTEM WAS OPERATIONALLY TESTED AND AIRCRAFT WAS RETURNED TO SERVICE.