3800 HD (250-3533) Keyboard Functions Faxback Doc. # 1434 Using Key Combinations: Your computer provides certain key combinations that can help you save battery power as you use the computer. These key combinations override the Setup program and Power program parameters. FN+F1 (Reverse): Press this key combination to vary the contrast of characters and the background. Choose the setting best suited to the software you use. FN+F3 (Speed): Press this key combination to select the computer's CPU speed (20MHz or 10MHz). The power indicator lights orange when you select 10MHz. FN+F4 (Disk): Press this key combination to cause the hard disk controller to turn off until accessed. No special keystrokes or commands are needed to turn the disk controller on again. FN+F5 (Spkr): Press this key combination to enable or disable the speaker. NOTE: This does not turn on the speaker if you turned it off is Setup380 FN+F7 (Display): Press this key combination to turn off the backlight and LCD. Any keyboard entry you make turns the backlight and the LCD back on. FN+F8 (Serial): Press this key combination to enable or disable the serial ports. Both serial ports are turned on until you press the key combination or unless you disabled the serial ports in the setup program. Using Key Combinations: Your computer provides certain key combinations that can help you save battery power as you use the computer. These key combinations override the Setup program and Power program parameters. FN+F1 (Reverse): Press this key combination to vary the contrast of characters and the background. Choose the setting best suited to the software you use. FN+F3 (Speed): Press this key combination to select the computer's CPU speed (20MHz or 10MHz). The power indicator lights orange when you select 10MHz. FN+F4 (Disk): Press this key combination to cause the hard disk controller to turn off until accessed. No special keystrokes or commands are needed to turn the disk controller on again. FN+F5 (Spkr): Press this key combination to enable or disable the speaker. NOTE: This does not turn on the speaker if you turned it off is Setup380 FN+F7 (Display): Press this key combination to turn off the backlight and LCD. Any keyboard entry you make turns the backlight and the LCD back on. FN+F8 (Serial): Press this key combination to enable or disable the serial ports. Both serial ports are turned on until you press the key combination or unless you disabled the serial ports in the setup program. (jej-05/10/94)