What was found
DIVERTED DUE TO A LOSS OF CABIN PRESSURE AND CABIN OXYGEN MASKS DEPLOYMENT. BLEED 1 LEAK INFLIGHT, AFTER 2 MINUTES MESSAGE REAPPEARED. COMPLIED WITH QRH. R & R THE HP & NAPRSOV. FOUND BOTH LEAKING DURING TROUBLESHOOTING. RAN ENGINES, OK FOR SERVICE. NR 1 ENG NAPRSOV REMOVED DUE STATIC LEAK WITH APU BLEED AIR SOURCE. REMOVED & REPLACED NAPRSOV IAW AMM 36-11-03 ENG 1. HIGH POWER RUN ACCOMPLISHED, OPS CHECKED OK, NO FAULTS NOTED. NR 1 ENGINE HP VALVE REMOVED DUE STATIC LEAK WITH APU BLEED AIR SOURCE. REMOVED & REPLACED THE NR 1 ENGINE BLEED PRESSURE REGULATING SHUT OFF VALVE IAW AMM 36-11-01 HIGH POWER RUN ACCOMPLISHED. OPS CHECKED OK. NO FAULTS NOTED.