What was found
LH FMC FAILED MULTIPLE TIMES. COMPLIED WITH QRH FMC FAIL C/L FMC SWITCH MOVED TO BOTH ON R. GROUNDED - YES. REF B737-900 FIM 34-61 TASK 801, BITE TEST SHOW NO INFLIGHT FAULTS, VERIFED SOFTWARES ARE CURRENT, DUE TO PASS HISTORY, REMOVED & REPLACED L/H FMC COMPUTER, POSITION FMC SWITCH TO NORMAL, VERIFIED & LOADED CURRENT SOFTWARE, PERFORMED OPS TEST GOOD REF B737-900 AMM 34-61-02.