As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPLACE FIRE OVERHEAT LOGIC TEST CARD NR 1 FOR LT ENG FIRE TEST DUE TO FAILED FIRE TEST (FIRE HANDLE DID NOT ILLUMINATE AND NO EICAS FOR LT ENG FIRE). CARD WAS SWAPPED WITH RT ENG LOGIC CARD NR2 AND PROBLEM FOLLOWED. ALL CARDS ARE BACK IN ORIGINAL POSITIONS. REF WD26-11-11 ITM M10224 PCN 481-9094. REPLACED M10224 CIRCUIT CARD IAW MM 26-10-01, OPS CHECKED NORMAL.