Acer Aspire 4540 Notebook Series Start Guide
Page 6
... before pressing the other key in Sleep mode. + + + + < > Display toggle Screen blank Speaker toggle Brightness up Switches display output between the display screen, external monitor (if connected) and both. Turns the speakers on and off to return. Enables...Bluetooth Sleep Description Starts System Property for certain models). Increases the screen brightness. + < > + < > + < > Brightness down Decreases the sound volume (only for displaying system information. Turns the display screen backlight off . The front panel indicators are visible even when the...
... before pressing the other key in Sleep mode. + + + + < > Display toggle Screen blank Speaker toggle Brightness up Switches display output between the display screen, external monitor (if connected) and both. Turns the speakers on and off to return. Enables...Bluetooth Sleep Description Starts System Property for certain models). Increases the screen brightness. + < > + < > + < > Brightness down Decreases the sound volume (only for displaying system information. Turns the display screen backlight off . The front panel indicators are visible even when the...
Acer Aspire 4540 Series Service Guide
Page 156
... any of the following symptoms it may be faulty: • Audio CDs do not play when loaded • DVDs do not play when loaded • Blank discs do not burn correctly • DVD or CD play breaks up or jumps • Optical drive not found or not active: • Not shown... My Computer or the BIOS setup • LED does not flash when the computer starts up • The tray does not eject • Access failure screen displays • The ODD is displayed in the Devices with Removable Storage panel. 4.
... any of the following symptoms it may be faulty: • Audio CDs do not play when loaded • DVDs do not play when loaded • Blank discs do not burn correctly • DVD or CD play breaks up or jumps • Optical drive not found or not active: • Not shown... My Computer or the BIOS setup • LED does not flash when the computer starts up • The tray does not eject • Access failure screen displays • The ODD is displayed in the Devices with Removable Storage panel. 4.
