As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW DECLARED AN EMERGENCY DUE TO BLEED 1 AND 2 EICAS FAIL MESSAGES. PILOT PERFORMED QRH WITHOUT POSITIVE RESULTS AND NOTED CABIN BEGINNING TO DEPRESSURIZE. ACCOMPLISHED EMERGENCY DESCENT TO 10,000 FEET AND WERE ABLE TO RESET BLEED 1 AND 2. EXECUTED A NORMAL LANDING. REMOVED AND REPLACED AMS CARD MOTOR DRIVER MOD SLOT 20 IAW AMM 21-00-02. OPS CHECKED NORMAL.