What was found
ON TAXI OUT, AMBER MSG "CABIN DOOR OPEN" DISPLAYED. DID CABIN DOOR OPEN PROCEDURE WITH NO LUCK. POWERED DOWN AND TRIED AGAIN WITH NO LUCK. REMOVED THE UPPER STEP & FWD TRIM TO MAIN ENTRANCE DOOR FOUND TEE INNER DOOR HANDLE STOP BOLT HAD BACKED OUT DUE TO THE SAFETY CABLE BEING LOOSE. THIS WAS TRIED AGAIN WITH NO LUCK CAUSING THE PAWL FOR THE DOOR LOCK SOLENOID TO COME IN CONTACT WITH THE INNER. DOOR HANDLE AND NOT SEATING FULLY. ADJUSTED INNER DOOR HANDLE STOP BOLT AND SAFETIED HARDWARE IAW AMM 52-70-15 AND 52-10-16. PERFORMED SUCCESSFUL OPS CHECK OF THE CABIN DOOR REF. CE-680A AMM 52-10-00 INSTALLED ALL PANELS AND UPPER STEP IAW AMM 52-10-00.