What was found
SUPPLEMENTAL BLEED 1 FAIL CAUTION IN FLIGHT FL370 QRH PROCEDURES C/W. BLEED 1 FAIL REANNONCIATED AT 2000 ON APPROACH. CREW COMPLIED WITH QRH AND DIVERTED TO CMH. C/A-DEFERRED BLEED 1 PER MEL 36-13 AUTH#020282DM-C. M PROCEDURES C/W. REMOVED E1 NAPRSOV REF ERJ AMM 36-11-03-000-801. INSTALLED SERVICEABLE E1 NAPRSOV IAW AMM 36-11-03-400-801 UP TO AND INCLUDING STEP 3.J.[7] COMPLIED WITH COMPLETION OF AMM 36-11-03 FROM STEP 3.J.(8). LEAK CHECK OF LT NAPRSOV IAW AMM 36-11-03-790-802-A/500 GOOD. OPC OF ENGINE PNEUMATIC BLEED SYSTEM GOOD IAW AMM 36-11-00-710-801-A. NO OTHER DFEFECTS NOTED AT THIS TIME. MEL RESTORED. MTX PROCEDURES REVERSED.