The computer doesn’t go to sleep automatically.

nYou may have dragged the slider to Never in Custom view of the PowerBook control panel. Drag the slider to a lower setting.

nYou may be connected to a shared disk on the network. If you are not using the information on the shared disk, disconnect from it.

nThe printer/modem port may be in use. Quit your telecommunications program or turn off background printing in the Chooser (if the documents you’re printing can wait until later).

nOne or more applications may be doing work in the background. You can choose Sleep from the Special menu to override them.

nThe computer does not go to sleep if it is being used in a Duo Dock.

nThe computer does not go to sleep if you are using it with a Duo MiniDock and

m an external monitor or SCSI device is attached, or

myou started or restarted the computer after connecting it.

See Chapter 6 for more information about batteries and power consumption.

The screen

The screen looks blurred or out of focus.

nThe viewing angle may not be optimal. Tilt the display on its hinge until the screen looks better.

The screen is too dark.

nWhen you first turn on your computer, it may take several minutes for the screen brightness to “warm up,” especially if you’ve chosen a high setting.

nThe screen brightness or contrast may not be optimal for the surrounding lighting. Adjust the brightness or contrast setting.

nThe screen dims automatically when the battery starts to run low. You may need to recharge or replace the battery before you can turn up the brightness.

The screen is flickering.

nThis problem sometimes occurs when your screen is set to display the maximum number of grays. Try adjusting the contrast control, or select fewer grays in the Monitors control panel.

284 Quick Reference

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Apple Duo 270C manual Screen, You started or restarted the computer after connecting it