What was found
NR 1 IDG OFFLINE ENROUTE, AC BUSS 1. AC ESS BUSS DID NOT TRANSFER TO IDG 2 AND AC ESS TRANSFER SWITCH WOULD NOT SWITCH POWER TO AC BUSS 2. POWER RETURNED TO ALL BUSES AFTER STARTING APU BUT ELECTRICAL SYNOPTIC PAGE STILL SHOWED BUSSES NOT POWERED AND NO ASSOCIATED FLOW LINES. RESET NR 1 GENERATOR, ALL INDICATIONS BECAME NORMAL ON GROUND. PERFORMED VISUAL INSPECTION OF NR 1 AND NR 2 IDG OIL SYSTEMS AND INSPECTED APU OIL LEVEL AND FOUND TO BE WITHIN LIMITS IAW AMM. PERFORMED OPS TEST OF THE AC AUTOMATIC POWER TRANSFER CIRCUITS, OPS CHECK GOOD IAW AMM.