Cross-shaped key-bit color monitor how mobile screen? Thanks!

Users questions: I have a CRT color monitor is up and down keys, and left there to set keys, set the next three lights, get a bit careless today screen pattern to cover half the remaining half to pull, ask about how to pull the screen back to the normal
Experts answer: press the Menu key menu, with a horizontal position , Adjust the vertical position.
  • This information provided by the users.Thanks!