When the DJ announced a contest, the phones 'lit up'. [=the lights on the phones lit up because many people were calling]
His eyes/face 'lit up' [=he looked very happy and pleased] when she walked in the room.
He 'lit into' his employees for their sloppy work. [=he criticized them very harshly]
(..) No! -Woody! What are you doing? -Hold still, Buzz! You did it! Next stop, Andy! Wait a minute. I just lit a rocket. Rockets explode! I should have held on longer. Look! Look! It's Woody and Buzz comin' up fast! Woody! (..)1995 Toy Story