What was found
NR 1 BLEED LEAK WARNING DISPLAYED. RECONFIGURED IAW QRH WARNING WENT OUT AFTER 2 MINUTES 50 SECONDS. GROUND RAN AIRCRAFT WITH BLEEDS ON, NO WARNING MESSAGE DISPLAYED. CHECKED MFD FOR MESSAGES, NO BLEED LEAK MESSAGES DISPLAYED. INSPECTED THE NR 1 BLEED PIPE JOINTS, NO DEFECTS FOUND. OK FOR SERVICE.