In-game menus also have adustments. I belive the midway games had a fine tuing screen in the diagnositc menu.
Also what snaake forgot to mention is that fiddling with the dials is dangerous, not so much for getting shocked (unless you are stupid enough to touch anything) but if you get it out of sync it can be very hard to get it back again unless you are a proper technician. You an get it "close" but not perfect, like it was at the factory. Also modern tv's often have micro pots and aren't clearly labeled and sometimes aren't even visible without removing stuff.
Your best bet it to either pay a LOT of money to hire a technician to do it or find someone who is familair with the innards of tv's and have them help you.
All kidding aside if you don't know what your are doing there is a good chance you could get hurt and nobody wants to see that happen.
