What was found
CREW REPORTED- ON CLIMB WE RECEIVED FUEL 1 LOW LEVEL MASTER. RETURNED TO EDC. INITIALLY DEFERRED THEN CORR ACTION- MX FOUND NO MSG PRESENT ON EICAS, NO RELATED MSG ON THE CMC, AND NO MSG ON THE FUEL REPEATER. PERFORMED OPS CHECK OF THE LOW-LEVEL WARNING SYSTEM, OPS CHECKS GOOD. THIS CLEARS MEL 28-44-00 PLACARDS REMOVED.