As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT DECLARED EMERGENCY ON ACCOUNT OF MULTIPLE STATUS MESSAGES AFTER TAKE OFF. "AFT CARGO SMOKE DET1" / "EQUIP CLG TEST" / "LT ENGINE EGT" INDICATION RED 696 DEG. MAINTENANCE TROUBLESHOT AND FOUND FAULTY L EICAS COMPUTER. REPLACED IAW AMM 31-41-02 AND HAS CORRECT SOFTWARE CHECKED NORMAL. ALL MESSGES CLEARED.