Lenovo ThinkPad S431 Hardware Maintenance Manual page 50

Table 7. Status indicators
Indicator
1
Speaker-muter indicator
2
Microphone-mute
indicator
3
Camera status indicator
4 6
System status
indicator
5
Fn Lock indicator
44
Hardware Maintenance Manual
Meaning
On: The speakers are muted.
On: The microphones are muted.
On: The camera is in use.
Blinking three times: The computer is initially connected to power.
On: The computer is in use. Off: The computer is off or in hibernation mode.
Slow blinking: The computer is in sleep mode.
Fast blinking: The computer is entering hibernation mode.
Off (default mode): The Fn Lock function is disabled. To initiate the special function of
each key, press the function keys directly. To input F1- F12, you need to press the Fn
key and the corresponding function key.
On (legacy mode): The Fn Lock function is enabled. To initiate the special function of
each key, you need to press the Fn key and the corresponding function key. To input
F1- F12, press the function keys directly.