As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORT: STAB TRIM EICAS ON TAXI OUT. CYCLED STAB TRIM CTRL C/B'S NO HELP, CYCLED FLT CTRL ELEC LT & RT 1&2 C/B'S FAULT CLEARS & STAYS OUT WHEN MOVING CAPT'S ELECT STAB TRIM SWITCHES. LIGHT & EICAS MSG RETURN WHEN F/O'S STAB TRIM SWITCHES ARE USED. STAB APPEARS TO TRIM AT NORMAL RATE.