What was found
ELEVATOR SPLIT CAUTION MSG W/ CAS MISCOMP / INTERROGATED MDC DID NOT FIND B1. TS IAW CRJ 700 FIM 31ˆ’41ˆ’00ˆ’810ˆ’802 AND 27ˆ’31ˆ’00ˆ’810ˆ’803. PERFORMED OPS CHECK OF ELEVATOR IAW CRJ 700 AMM 27€“31€“00€“710€“801. REMOVED DCU 1 AND DCU 2 IAW CRJ 700 AMM 31€“41€“04€“000€“801. WHEN DCU 1 BREAKERS PULLED BOTH FAULTS WENT AWAY. REMOVED AND REPLACED DCU 1 AND RE INSTALLED DCU 2 IAW CRJ 700 AMM 31€“41€“04€“000/400€“801. OPS CHECK GOOD.