As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH EQUIP COOLING SELECTOR IN STBY MODE, FWD EQUIP OVHT LIGHT CAME ON. RAN THE QRH AND THE EICAS MESSAGE AND LIGHT WENT OUT. PERFORMED FIM 21-58 FT 909, CLEAN AND INSTALL THE HIGHER DECKS LOW FLOW DETECTOR TS163 PER AMM 21-58-17. EQUIP COOLING TESTS CLEAN.