IBM ThinkPad 755CX Manual page 33

Symbol
Numeric lock
Caps lock
Scroll lock
Suspend mode
Power on
Color Meaning
Green Indicates that the numeric keypad on the keyboard is enabled. The
keypad is enabled and disabled by pressing and holding the Shift
key, and pressing the NumLk key. For more information about the
numeric keypad, see "Operating the Numeric Keypad" on page 26.
Green Indicates that the Caps Lock mode is enabled. All alphabetic
characters ( A - Z ) are entered in capital letters without the use of the
Shift key. The Caps Lock mode is enabled and disabled by
pressing the Caps Lock key.
Green Alternately turns on and off each time the ScrLk key is pressed.
While this indicator is on, the Arrow keys are used as screen-scroll
function keys. In this state, the cursor cannot be moved with the
Arrow keys. Not all application programs support this function.
Green Indicates that the computer is in suspend mode. See page 50 for
more information about suspend mode.
Blinking green Indicates that the computer is entering suspend or hibernation
mode, or is resuming normal operation.
Green Indicates that the computer is operational. This indicator is on
when the computer is on and not in suspend mode.
System-Status Indicators
Chapter 2. Getting Familiar with Your Computer
17