54 EN HARDWAREUsing Hot keysYou can use the coloured hot keys of the PC keyboard. Hold down the Fn key and press one ofthe Hot keys to execute its command.List of hot keysF1 Reduces the screen brightness level. Use this command to reduce the brightness level ifthe screen is too bright.F2 Increases the screen brightness level. Use this command to increase the brightness levelif the screen is too dark.F3 Stand by the Mobile PC.F4 Hibernate the Mobile PC.F5 Reduces the volume.F6 Increases the volume.F7 Turns the PC speaker on or off.F9 Sets the wireless LAN to ON or OFF (XP-7230GB only).(Refer to “Network connections using a wireless LAN” on pages 67 and 68.)F10 Switches between the LCD display and an external monitor. (Mode switching from LCDpanel to LCD plus CRT display, to CRT display)F11 Turns the Num Lock key on or off. For operation details, see "Using the Numeric Keypad"of the next section.F12 Turns the Scroll Lock key on or off.Ins Issues the Print Screen (PrtSc) command. The screens displayed in the Windows arecopied onto the clipboard. You can select a window and copy it using the Alt keytogether.Note• The hot keys are not supported in the MS-DOS environment.• If a key top has come off, refer to page 55.Using the Numeric KeypadSixteen keys of the keyboard have been assigned to the numeric keypad. Each of these keys hastwo labels in different colours to identify their functions. (Blue characters printed on the diagonalpart of the key are numeric keypad keys.)To use the numeric keypad:Hold down the Fn key and press the NumLK key. When the numeric keypad is functional, theNum Lock lamp lights. (See the "Status Indicators" on Page 19. Now, you can enter a numeralprinted in blue on the diagonal part of the key.