IBM X23 Benutzerhandbuch
Memory
1. If two DIMMs are installed, remove one
of them and run Diagnostics -->
Memory Test - Quick.
Memory Test - Quick.
2. If the problem does not recur, replace
the DIMM, remove the other one, and
run the test again.
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 power
switch.
switch.
2. Run Diagnostics --> Other Devices -->
IBM Fan.
Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
of Fn with a function key.
The Fn key works independently from the operating
system.
system.
Key Combination
Result
Fn + F1
Reserved.
Fn + F2
Reserved.
Fn + F3
Standby mode.
Fn + F4
Suspend mode.
Fn + F5
Reserved.
Fn + F6
Reserved.
Fn + F7
Switch between the LCD, the external
monitor, and both the LCD and external
monitor.
monitor, and both the LCD and external
monitor.
Fn + F8
Reserved.
Fn + F9
Reserved.
Fn + F12
Hibernation mode.
Fn + PgUp
ThinkLight On/Off.
Fn + Home
The LCD becomes brighter.
Fn + End
The LCD becomes less bright.
Chapter 3. ThinkPad X20, X21, X22, X23, X24
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