As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4298, CREW REPORTED THAT DURING CRUISE AT FLIGHT LEVEL 24000, RECEIVED A PITCH TRIM INOPERATIVE MESSAGE ON EICAS. COMPLIED WITH AOM VOL 1 CHECKLIST AND DECLARED AN EMERGENCY. DIVERTED AND LANDED WITHOUT INCIDENT. COMPLETED THE POST FLIGHT AND FOUND NO IRREGULARITIES. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED THE MODULE ASSEMBLY TRIM CONTROL BOX IAW AMM 20-13-10. OPS CHECKED GOOD IAW AMM 27-40-00, 27-24-00, 27-14-00. AIRCRAFT RETURNED TO SERVICE.