As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"AT FAIL" MASTER CAUTION ON EICAS 8-10 MIN AFTER AIRCRAFT POWER UP . PLACED ON MEL. MEL CLEARED BY VERIFIED FCS 22310020TA(1/2) IN CMC. CND FAULT, REPLACED THROTTLE QUADRANT PER FIM 22-31-00-810-860-A AND AMM 76-11-01-000/400-801-A AS PRECAUTION, OPS CHECKS GOOD. AT OPS TEST AMM 22-31-00-710-801-A, GOOD. RETURNED TO SERVICE.