As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING RECENT APPROACH LT ENGINE BLEED EICAS FLASHED NUMEROUS TIMES. PERFORMED AIR SUPPLY BITE, REF FIM TASK 36-20-00-815-804. FOUND FAULT BALL ON HPC. PERFORMED HP SOV AND HPC TEST, REF AMM 36-11-07/501. SYSTEM CHECK GOOD. NO FAULTS FOUND. OK TO CONTINUE.