What was found
FMC SINGLE FMC MESSAGE FOLLOWED BY "MAP" ON ND AND "NO VSD" ON PFD. SAME MESSAGES AS REPORTED PG 60425582. GROUNDED - YES. PERFORMED FMC BITE FOUND "DISCR OUT LOOP" ON ACTIVE. REPLACED R/H FMC WITH SERVICEABLE ONE. ACCOMP FMC SOFTWARE CROSS LOAD & VERIFIED. ACCOMP FMC PERFORMANCE FACTORS ADJUSTMENT VERIFIED. ACCOMP FMC OPS TEST, TEST PASS REF B737-800 AMM 34-61-02-400-801, AMM 34-61-00-470-806, & AMM 34-61-00-800-801 & M/M 34-61-00-710-801.