As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE AT FL 300, THE NR 1 BLEED FAULTED. THE NR 2 BLEED ALREADY MEL'D. FOLLOW THE QRH PROCEDURES AND DIVERTED. PERFORMED BITE CHECK OF NR 1 PNUEMATIC CONTROLLER. DISPLAYED C CONTROLLER FAULT IAW TSM 41HA CONTROLLER AT FAULT. REPLACED NR 1 PNUEMATIC CONTROLLER IAW AMM 36-11-19. OPS CHECKS GOOD. NO FAULT ON ENGINE RUN.