As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PUSH BACK AUTO THROTTLE DISCONNECT EICAS MESSAGE AND ALL THRUST REFERENCE INDICATIONS DISAPPEARED. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE DEFERRED THE AUTO THROTTLE SYSTEM IAW ABX MEL 22-30-1A, PLACARD INSTALLED AND MX PROCEDURES C/W. AIRCRAFT RETURNED TO SERVICE.