As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT NOT GROUNDED) (EMERGENCY DECLARED) HEAVY VIBRATION AT FL340 FOLLOWED BY STRONG ELECTRICAL FUMES IN FLIGHT DECK AND FORWARD CABIN. BLOWER FAULT FOLLOWED BY EXTRACT FAULT / REMOVED AND REPLACED AVNCS VENT BLOWER IAW AMM 21-26-51-400-001A, OP CK GOOD. "