What was found
MCP FROZEN AND UNRESPONSIVE TO START OVER 3 TIMES BECAUSE #1 MCDU FROZE UP AND HAD SOME MISSING DIGITS ,GAVE VERBAL TURNOVER TO SWINGSHIFT. PARTS USED: VERIFY TEST PER AMM 22-11-00 TEST PASSED ALSO PERFORMED BITE 29-3162-9-0002,QTY :1 LIBRARY TEST FOR FCC A -B PER AMM 22-11-00 TEST PASSED BUT HAD ADD EMP:U104889 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1604368 SN OFF 7392 UNIT, E&E BOX E OFF 29-3162-9-0002 7392 ON 29-3162-9-0002 1290 REPLACED FCC-A WITH NEW, SOFTWARE WAS CORRECT AND LRU TEST PASSED REF AMM 22-11-33-400-801. PERFORMED CAT III LAND VERIFY TEST AND PASSED, NO FAULTS WITH MCDU 1 OR THE MCP REF AMM 22-11-00-700-801. PARTS USED: 29-2211-9-0005,QTY :1 ADD EMP:U104889 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1681829 SN OFF 1647 COMPUTER, FLIGH OFF 29-2211-9-0005 7 ON 29-2211-9-0005 1581