What was found
RIGHT FMC DURING PREFLIGHT SHOWING "MAP" FLAG AND "NO VSPD" ON COPILOTS INSTRUMENTATION. GROUNDED - YES. NOTICES EXTINGUISH WHEN FMC SELECTED TO EITHER BOTH ON LEFT OR RIGHT. BOTH FMC SENSOR PAGES FAIL THEIR OPPOSITE COMPUTER. CYCLED RIGHT FMC CB NORMAL OPERATION RESUMES W/ NO FLAGS. ACCOMPLISHED FMC OPERATIONAL TEST REF B737-900 AMM 34-61-00, OBSERVING CORRECT SOFTWARE INSTALLATION AND PERFORMANCE PARAMETERS. ETOPS GROUND VERIFICATION SUCCESSFUL.