As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START NO BLEED AIR FROM LEFT ENGINE WITH THE BLEED AIR VALVE SELECTED TO OPEN. RESEATED CONN ON LT ENG PRV AND HP CONT. CHECKED CONNECTIONS ON PRV AND HP VALVES. RAN LT ENG TO BLEED SHIFT AFTER UNLOCKING HPSOV DUE TO MSU. SEE NEXT ITEM. ENG BLEED OPS CHECK NORMAL PER AMM.