Lenovo T42/T42P, T41/T41P manual Fn key combinations, 54 T40/T40p, T41/T41p, T42/T42p

Product overview

FRU	Applicable test
Memory	1. If two DIMMs are installed, remove one of
	them and run Diagnostics -->Memory
	Test—Quick.
	2. If the problem does not recur, return the
	DIMM to its place, remove the other one,
	and run the test again.
	3. If the test does not detect the error, run
	Diagnostics -->Memory Test—Full.
Fan	1. Turn on the computer and check the air
	turbulence at the louver near the PC Card
	slot.
	2. Run Diagnostics -->Other Devices -->
	Fan.
TrackPoint or	If the TrackPoint does not work, check the
pointing device	configuration as specified in the ThinkPad
	Configuration program. If the TrackPoint is
	disabled, select Automatic to enable it.
	After you use the TrackPoint, the pointer may
	drift on the screen for a short time. This drift
	can occur when a slight, steady pressure is
	applied to the TrackPoint pointer. This symptom
	is not a hardware problem. If the pointer stops
	after a short time, no service action is
	necessary.
	If enabling the TrackPoint does not correct the
	problem, continue with the following:
	v Interactive Tests -->Mouse
Touch Pad	If the Touch Pad does not work, check the
	configuration as specified in the ThinkPad
	Configuration program. If the Touch Pad is
	disabled, select Automatic to enable it. If
	enabling the Touch Pad does not correct the
	problem, continue with the following:
	v Interactive Tests -->Mouse

Fn key combinations

The following table shows the function of each combination of Fn with a function key.

Key	Description
combination
Fn+F1	Reserved.
Fn+F2	Reserved.
Fn+F3	Turn off the computer display, leaving the
	screen blank. To turn the computer display on
	again, press any key or press the TrackPoint
	pointing stick.

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54T40/T40p, T41/T41p, T42/T42p