As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPLEMENTAL AT 37000FT CRUISE THE 115 VAC BUS OFF, CAME ON THE EICAS - STRONG ELECTRICAL BURNING SMELL IN COCKPIT AND CABIN-C/A-FOUND PRINTER TO BE THE CAUSE OF BURNING SMELL PLACED PRINTER ON MEL. DEFERRED PRINTER 23-06 MAINTENANCE ACTION COMPLIED WITH COLLARED CB J7. REMOVED AND REPLACED ACARS PRINTER IAW AMM 23-22-02 OPC GOOD MEL RESTORED