What was found
DCU B B3-006531 DCU "A" B3-006494 BRAKE FAULT B3-22442 UPON SELECTING GEAR DOWN WE GOT A MAGENTA BOX WITH DASHES ON THE RIGHT MAIN GEAR. WE ALSO GOT THE FOLLOWING CAS MESSAGES: GEAR DISAGREE, LEFT AND RIGHT THRUST REVERSER FAIL, BRAKE FAUL AND LEFT HYD TEMP HIGH. AFTER RUNNING APPROPRIATE CHECKLISTS WE LANDED WITHOUT INCIDENT. CORRECTIVE ACTION: REMOVED BAD DCU AND INSTALLED NEW DCU, IAW CH350 AMM 31-41-01. OPERATIONS CHECKS ARE GOOD AND DCU A & B FAULTS ARE NO LONGER ACTIVE. REMOVED DCU P/N 822-1578-009 S/N 4FKD1X INSTALLED S/N 46YXP3.