Lenovo ThinkPad 300 Service Guide - Page 31

Computer, screen, problems

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Computer screen problems Problem: Incorrect characters appear on the screen. Solution: 1. Make sure that the operating system and the application program are installed correctly. 2. If they are installed and configured correctly, have the computer serviced. Problem: Missing, discolored, or bright dots appear on the screen every time I turn on my computer. Solution: This is an intrinsic characteristic of the TFT technology. Your computer's display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time. Problem: The screen is blank. Solution: 1. Do the following: v Press Fn+F7 to bring up the image. Note: If you use the Fn+F7 key combination to apply a presentation scheme, press Fn+F7 at least three times in three seconds. v If you are using the AC adapter, or using the battery, and the battery status indicator is on (is green), press Fn+Home to make the screen brighter. v If the sleep (standby) status indicator is on (is green), press Fn to resume from the sleep (standby) mode. 2. If the problem persists, do the Solution in the following Problem. Chapter 3. Solving computer problems 23

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Computer
screen
problems
Problem:
Incorrect
characters
appear
on
the
screen.
Solution:
1.
Make
sure
that
the
operating
system
and
the
application
program
are
installed
correctly.
2.
If
they
are
installed
and
configured
correctly,
have
the
computer
serviced.
Problem:
Missing,
discolored,
or
bright
dots
appear
on
the
screen
every
time
I
turn
on
my
computer.
Solution:
This
is
an
intrinsic
characteristic
of
the
TFT
technology.
Your
computer’s
display
contains
multiple
thin-film
transistors
(TFTs).
A
small
number
of
missing,
discolored,
or
bright
dots
on
the
screen
might
exist
all
the
time.
Problem:
The
screen
is
blank.
Solution:
1.
Do
the
following:
v
Press
Fn+F7
to
bring
up
the
image.
Note:
If
you
use
the
Fn+F7
key
combination
to
apply
a
presentation
scheme,
press
Fn+F7
at
least
three
times
in
three
seconds.
v
If
you
are
using
the
AC
adapter,
or
using
the
battery,
and
the
battery
status
indicator
is
on
(is
green),
press
Fn+Home
to
make
the
screen
brighter.
v
If
the
sleep
(standby)
status
indicator
is
on
(is
green),
press
Fn
to
resume
from
the
sleep
(standby)
mode.
2.
If
the
problem
persists,
do
the
Solution
in
the
following
Problem.
Chapter
3.
Solving
computer
problems
23