Compaq 303500-001 - V 900 - 19" CRT Display User Manual page 12

If you do not want to set SLEEP Time, press the Menu button
twice, then select Save and Return to exit the menu.
11. After setting SLEEP Time, the highlight automatically skips to
Set ON Time "hours." Repeat steps 6 through 9 to set ON Time.
12. Set the Timer mode to ON to activate the Sleep Timer settings.
13. When you are finished, select Save and Return to exit the menu.
The fifth selection SLEEP NOW turns the monitor off immediately and
stays in sleep mode until the next On Time activates or the menu button
is pressed.
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