What was found
ENROUTE, RECEIVED AN EICAS MESSAGE FOR ANTI-ICE INOPERATIVE. WING AND STAB ANTI-ICE FAIL. ACFT DIVERTED TO MAINTENANCE R & R THE NR 1 ENGINE BLEED VALVE IAW AMM 36-11-05, IPC REF IPC 36-11-05, FIGURE 01A, OPS CHECK GOOD AND WAS RELEASED BACK TO SERVICE.