As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMER BRK FAULT EICAS MESSAGE APPEARED WHEN TRYING TO CROSS RUNWAY. UNABLE TO MOVE, HANDLE WAS IN DOWN POSITION. CYCLED HANDLE AND MESSAGE EXTINGUISHED, WHEELS TURNED FREELY. REMOVED FROM SERVICE. NO CAS MESSAGES AT GATE. CMC SHOWED NO CORRELATED FAULT CODES. CHECKED PB ACCUMULATOR PRESSURE, CHECKED GOOD. OPS TEST OF PARKING BRAKE IS GOOD. NO DEFECTS NOTED. REF AMM 12-12-05-610-801A AND 32-44-00-710-801A. RETURNED TO SERVICE.