What was found
#1 AC GEN CAUTION ILLUMINATED ON TAKE OFF. THE #1 AC GEN CAUTION RESET ONCE EXTINGUISHED AFTER E+A CHECKLIST. THE #1 AC GEN CAUTION LIGHT CAME BACK ON AGAIN AFTER A FEW MINUTES. EVENT MARKER PRESSED. REMOVED FROM SERVICE. INTERROGATED CDS AND FAULTS WERE NOT FOUND. EPCU HAD FAULT CODES 25 (#1 AC GEN FEEDER) & 27 (#1 ACGCU FAIL). R&R #1 AC GEN IAW MTC 6242101. FOUND NO DEBRIS ON #1 AC GEN CHIP DETECTOR MAGNETIC PLUG. C/W ENGINE INSPECTION TASK 05-53-00-210-819 STEP 1-4(A). FOUND NO CONTAMINATION AND REPLACED FILTERS. OPS TEST PASSED. #1 AC GEN CAUTION DID NOT ILLUMINATE AND NO FAULTS NOTED IN CDS OR EPCU. NO LEAKS NOTED. NO FURTHER DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.