Lenovo ThinkPad 390 ThinkPad 390 / i Series 1720 models Hardware Maintenance M - Page 32

Checkout Guide, modified options can give false errors and invalid

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Symbol (3) Drive in use Color Orange (4) Numeric lock Green (5) Caps lock Green (6) Scroll lock Green (7) Power on Green Meaning 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 indicator is on. 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 Reference. 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. 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. The computer is operational. 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 problems. 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

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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