What was found
FLAPS DRIVE EICAS AFTER TAKEOFF. REF TSI 27-80/4883, PUT THE AIR/GROUND SYSTEM IN THE AIR MODE. PERFORMED STEP 7, OPS FLAPS WHEN FSEU #2 IN CONTROL, ALL OPS SATISFIED. OPS FLAPS WHEN FSEU #1 IN CONTROL, MX MSG 27-20391 LATCHED WITH STATUS MSG FLAP/SLAT CONTROL 1, AND FSEU #1 FAULT IN FLAP/SLAT MAINT PAGE. REPLACED FSEU #1 REF WRI 27- 50/4887 AND PERFORMED FSEU #1 SOFTWARE CONFIGURATION CHECK AND SELF TEST, ALL TEST SATISFIED, STATUS MSG, MX MSG CLEARED & FAULT CORRECTED REF FIM 27-51-00. PERFORMED STEP 7 AGAIN IN AIR MODE, OPS FLAPS WHEN FSEU #2 IN CONTROL, ALL OPS SATISFIED. OPS FLAPS WHEN FSEU #1 IN CONTROL, ALL OPS SATISFIED. ALL WORK ACCOMPLISHED IAW WRI 27-50/4918, 4919, 4920, 4921, 4925 & 4926.