What was found
LEFT GEN DRIVE EICAS CAME BACK ON & STAYED ON, LT GEN DRIVE DISCONNECT PUSHED IAW QRH FOR MAINTENANCE ACTION. REMOVED NR 1 ENG IDG IAW AMM 24-11-01. ACP IDT INSPECTION OF FEEDER CABLES INSTALLATION, IAW GMM 09-10-05. UNIONS FROM OLD IDG NEED TO BE TRANSFERRED TO NEW IDG. INSTALLED ENG NR 1 IDG UP TO STEP 9, SERVICED IDG IAW AMM 24-11-01-404-001-006 . COMPLETED INSTALLATION OF ENGINE 1 IDG IAW AMM 24-11-01-404-001-006. DRY MOTORED ENGINE 1, NO LEAKS NOTED, CHECKED IDG OIL LEVEL AFTER DRY MOTOR & SERVICED AS NEEDED. PREFORMED IDG OP TEST IAW AMM 24-11-00-715-005, OPS TESTS PASSED, NO LEAKS NOTED.