As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PUSHBACK, ALL T/O SPEEDS DUMPED AND UNABLE TO SET ANY T/O PWR SETTING ON TMC OR SET A TEMPERATURE A/C RETURNED TO THE GATE AND MTX GROUNDED A/C .MTX RESET CIRCUIT BREAKER IAW B767 AMM 20-60-01. OPS CHECK GOOD. NO FAULT NOTED AT THIS TIME. ACFT REMAINS CAT IIIB. MTX RETURNED ACFT TO SERVICE.