As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE ALTITUDE, SMOKE IN THE COCKPIT:F/O EADI WENT BLANK, FOLLOWED BY SMOKE FROM UNDER THE GLARESHIELD. PULLED THE ATT REF Z(F/O)CB AND RT EFIS MASTER. SMOKE PERSISTED INTERMITTENTLY. EMERGENCY DESCENT TO AIA. FOUND THE F/O EADI SHORTED OUT. REMOVED AND REPLACD THE F/O EADI IND OPS SYS PER MM 34-23-01. OPS GOOD. RAN ALL ENG'S AND PACKS OPS GOOD.