HELLO FROM CYPRUS- PLEASE HELP ME TO CLEAR PAPER JAM---X7170

GOOD MORNING EVERYBODY FROM CYPRUS. IAM USING AN X7170(NOT ANYMORE) LEXNMARK AND LAST TIME WHEN I TRY TO PRINT A CAR,IT TOOK A PAPER AND START TO PRINT BUT THE PAPER WASN'T STRAIGHT. SO I TRY TO TAKE THE PAPER OUT WHICH I DID WITH A LITTLE BIT FORCE.THE WHOLE PAPER WAS OUT WITHOUT TEAR IT. FROM THAT TIME WHEN I WAS TRYING TO PRINT THE PRINTER WAS WORKING BUT , IT WAS MAKING THE NOISE AND THE MOVEMENTS BUT THE PAPERS WHERE BLANK. I CHANGE THE INK CATDRIDGES WITH NEW BUT THE SAME RESULTS. AND I COULD SEE THAT THERE WAS INK INSIDE THE ROLLER. ANYWAY , THE BAD THING IS THAT ,I WAS THINKING IS JUST A SMALL DETAIL OR A PIECE OF PAPER INSIDE AND I TRY TO FIX IT BY OPENING WHICH I CAN SAY IT WAS LITTLE DIFFICULT.(IAM NOT A SPECIALIST) I DESMALLED THE MACHINE AND I PUT BACK TOGETHER AGAIN WITHOUT FIX SOMETHING ACTUALLY. AND NOW THE MESSAGE CLEAR PAPER JAM IS ALLWAYS ON THE SCREEN. AND THE PROBLEM IS THAT I TOOK IT TO A SPECIALIST AND WHEN I TOLD HIM THE TROUTH HE TOLD ME HE CAN NOT FIX IT.(BECAUSE I OPEN IT FIRST) .........PLEASE HELP ME................. YOURS SINCERELY LAZAROS