Sharp PC-9300 Manual page 17

Activity Indicators
The six activity indicators are located just above the center of the keyboard. The
lamps turn on when the function that they represent is active. From left to right,
the activity indicators have the following functions.
CD-ROM This indicator turns on whenever the system is reading from
a disc in the CD-ROM drive.
Hard Disk Drive This indicator turns on whenever the system is reading from,
or writing to the hard disk drive.
Floppy Disk Drive This indicator turns on whenever the system is reading from,
or writing to a diskette in the floppy disk drive.
Num Lock This indicator turns on when the keyboard is in Num Lock
mode. In this mode, the numeric keypad embedded in the
keyboard becomes active.
Caps Lock This indicator turns on when the keyboard is in Caps Lock
mode. In this mode, all typed text uses capital letters.
Scroll Lock This indicator turns on when the keyboard is in Scroll Lock
mode. In this mode, text will scroll onscreen without
changing the position of the cursor.
Microphone
The microphone is located near the front right edge of the notebook. The
microphone can be used to record sounds, or it can act as a telephone mouthpiece
when you are using the built-in fax/modem as a speakerphone (US and Canada
only) (PC-9300T only).
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