As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 30-40 KNOTS, RECEIVED AN ENG REVERSER DISAGREE CAUTION MESSAGE ON EICAS, FOLLOWED BY MASTER WARNING THRUST LEVER DISAGREE MESSAGE. FOUND THE NR 1 THRUST REVERSER UP STOWOUT SWITCH FAIL MESSAGE ON CMC. R & R THE NR 1 THRUST REVERSER UP STOWOUT SWITCH IAW AMM 78-34-01. OPS CHECKED GOOD. OK FOR SERVICE.