Powerbook Keeps Going to Sleep

[adk]

My Friend has a 15" Powerbook (2nd last rev.... 1.67ghz with lo-res screen) and it's been on the fritz lately. It operates completely normal and then it suddenly goes to sleep. When I wake it up it's back to normal just fine. It goes to sleep after about 3 minutes of use. Any Ideas?

 

[MACDRIVE]

Go into > System Preferences > Energy Saver > Sleep.

Adjust the settings to your liking. Don't forget to click the padlock before you close.