What was found
BOTH FMC 1 AND 2 FAILED TO CYCLE ON UNABLE TO INITIALIZE. GROUNDED - YES. CYCLED A/C POWER NO HELP BOTH FMC CDU BLANK WHEN ATTEMPTING TO ACCESS FMC SELECT ON EITHER MCDU HOLD #2 FMC COMPUTER 2 C/B "C1262" AND FMC 1 OPERATION WAS RETORED TO NORMAL . RESET FMC #2 COMPUTER CB AND FMC 2 OPERATION RESTORED TO NORMAL PERFORMED FMC BITE ON FMC 1 AND FMC2 REF B737-900 FIM 34-61 TASK 801 BOTH FMC BITE TEST PASSED. A/C OK FOR SERVICE.