Sony PCG-K215B Hardware Manual page 22

Indicators
Indicator
Power
Battery
Wireless LAN
(depending on your model)
Memory Stick Pro compatible
Light On
Data is read from or written to the hard drive.
Hard disk
Turns on when the number keys in the numeric keypad
Num Lock are active.
Turns on when the letters appear in uppercase as you
Caps Lock type. The <Shift> key lowers the case of typed
characters when Caps Lock is on.
Turns on when the screen scrolls differently (Not all
Scroll Lock applications support this function).
Functions
Power on: lights green.
Standby mode: flashes umber.
Indicates the status of the battery.
Turns on when the Wireless LAN is activated. Turns off when the Wireless LAN is not
activated.
Turns on when the Memory Stick is in use. Turns off when the Memory Stick is no longer in
use.
Off
The hard drive is not being accessed.
Turns off when the alphanumeric character keys in the
keypad area are active.
Turns off when the letters appear in lowercase as you
type (unless you hold down the <Shift> key).
Turns off when the information moves across the
display normally.
n N
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Using your VAIO computer