The ceiling drops and crushes me. How do I survive.

Hint 1 of 4:

This is an arcade section. You must be quick.

Hint 2 of 4:

Did you EXAMINE the small square in the middle of the wall facing you?

Hint 3 of 4:

Did you EXAMINE the typewriter?

Hint 4 of 4:

Quickly! OPERATE the numeric sequence you found on the typewriter.