What was found
AIRCRAFT WAS GROUNDED. CLIMBOUT GEAR UP FLAPS 5 - 1 DEGREE, CAPTAIN NOTICED NO MANUAL TRIM AUTHORITY UP OR DOWN ON BOTH YOKE TRIM SWITCHES. WITH AP VNAV WOULD NOT CLIMB TO HIGHER ALTITUDE. AIRCRAFT REMOVED FOR SERVICE FOR EVALUATION AND TROUBLESHOOTING. MAINTENANCE FOUND EICAS FAULT MSG ON PRIMARY FLIGHT COMPUTER CENTER. ALSO TROUBLESHOT GUST SUPPRESSOR MESSAGE TO THE UPPER TRANSDUCER (FAULT) PER FIM TASK 27-41-00-810 AND 27-21-00-810-827. REPLACED CENTER ACE COMPUTER IAW AMM 27-02-02. SATISFACTORY GROUND TEST COMPLETED.