What was found
LAS - DIVERTED FLIGHT - 2/19/01 - WHILE IN CRUISE FLIGHT FROM PDX TO PHX THE CREW STARTED GETTING VARIOUS AND CONTINUOUS ECAM FAILURE MESSAGES TOO RAPID TO READ; NO FAULT LIGHTS ILLUMINATED ON OVERHEAD PANEL. PER MAINTENANCE CONTROL INSTRUCTIONS, THE CREW CYCLED CIRCUIT BREAKERS F1 & Q7 WITH NO HELP. THE FLIGHT WAS DIVERTED TO LAS. IN LAS MAINTENANCE REPLACED THE NR 1 SDAC WHICH WAS BAD, (FAULTED) AND THE NR 2 SDAC TO MATCH PART NUMBER INSTALLED IN THE NR 1 POSITION; AFTER REPLACEMENTS SYSTEM OPERATION WAS NORMAL.