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Symbol Color Meaning
(3) Drive in use Orange Data is being read from
or written to the hard
disk drive, diskette drive,
or data is being read
from the CD-ROM drive.
Do not enter hibernation
mode or power off the
computer when this indi-
cator is on.
(4) Numeric lock Green The numeric keypad on
the keyboard is enabled.
You enable or disable
the keypad by pressing
and holding the Shift
key, and pressing the
NumLk key. For details,
see the User's Refer-
ence.
(5) Caps lock Green Caps Lock mode is
enabled. All alphabetic
characters
(A-Z)
are
entered in capital letters
without the Shift key
being pressed. You
enable or disable the
Caps Lock mode by
pressing the Caps Lock
key.
(6) Scroll lock Green Scroll Lock mode is
enabled. The Arrow
keys can be used as
screen-scroll function
keys. The cursor cannot
be moved with the
Arrow keys.
Not all
application programs
support this function.
You enable or disable
Scroll Lock mode by
pressing the ScrLk key.
(7) Power on Green The computer is opera-
tional. This indicator is
always on when the
computer is on and not
in suspend mode.
Checkout Guide
Use the following procedure as a guide for computer prob-
lems.
Note: The diagnostic tests are intended to test only IBM
products. Non-IBM products, prototype cards, or
modified options can give false errors and invalid
system responses.
24 ThinkPad 390/i Series 1700