What was found
FLIGHT 706, ORD-PHL - AT 30,000FT AND CLIMBING BLEED 2 ANNUNCIATED. RAN QRH CHECKLIST AND BLEED 2 CAME BACK ON. FINISHED CHECKLIST THAT REQUIRED CREW TO CLOSE NR 1 AND NR 2 BLEEDS, APU BLEED AND CROSSBLEED. EICAS STILL INTERMITTENTLY ANNUNCIATED. PER QRH PROCEDURE THE AIRPLANE DESCENDED DOWN TO 10,000FT AND DEPRESSURIZED. THE FLIGHT DIVERTED TO PIT FOR MAINTENANCE. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE PRSOV PER MM 36-11-03. NO LEAKS NOTED, AC OK FOR SERVICE.