Powering down the 777
Hi,
While powering down a 777, I noticed on the overhead panel that the Eng 1 & 2 Main generator(IDG) pushbuttons had the "OFF" amber light illuminated even after the APU shutdown and all power was gone. The batts were off, ADIRU off, emer light off and no ext power. The whole cockpit was dark except these two buttons. So, what was powering these two pushbuttons ? These happened to me once before. I waited for abt 3 mins and it was still on. Any idea ?