IBM MT 2675 manual Indicator Meaning

		Product overview
Indicator	Meaning
Drive in use	Green:	Data is being read from or
		written to the hard-disk drive.
		When this indicator is on, do
		not put the computer into
		standby mode or turn off the
		computer.
	Note: Do not move the system while the
	Green drive in use light is on. Sudden
	physical shock could cause drive errors.
Num lock	Green:	The numeric keypad on the
		keyboard is enabled. To enable
		or disable the keypad, press
		and hold the Fn key while
		pressing the NumLk key.
Caps lock	Green:	Caps Lock mode is enabled.
		To enable or disable Caps
		Lock mode, press Fn + Caps
		Lock key.
Scroll lock	Green:	Scroll Lock mode is enabled.
		Arrow keys can be used as
		screen-scroll function keys, but
		not to move the cursor. To
		enable or disable Scroll Lock
		mode, press Fn + ScrLk key.
		Not all application programs
		support this function.
Power on	Green:	This indicator stays lighted
		whenever the computer is on.
		If the power-on indicator is on
		and the standby indicator is off,
		the system is ready to use. If
		both the power-on indicator
		and the standby indicator are
		on, you can use the computer
		after it returns from the
		standby mode and the standby
		indicator goes off.

ThinkPad TransNote 37