Lenovo 8123 Manual Do Utilizador

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Power
 
supply
 
and
 
system
 
board
 
Diagnostic
 
LEDs
 
You
 
computer
 
has
 
two
 
LEDs
 
located
 
on
 
power
 
supply
 
on
 
the
 
back
 
of
 
the
 
chassis.
 
The
 
power
 
button
 
LED
 
located
 
on
 
front
 
of
 
your
 
computer
 
and
 
the
 
two
 
LEDs
 
on
 
the
 
back
 
will
 
help
 
you
 
determine
 
if
 
the
 
power
 
supply
 
or
 
system
 
board
 
is
 
working
 
correctly.
 
The
 
following
 
table
 
uses
 
the
 
LEDs
 
to
 
diagnose
 
possible
 
power
 
supply
 
and
 
system
 
board
 
problems.
 
 
Power
 
Button
 
LED
 
Green
 
LED
 
Yellow
 
LED
 
Diagnosis
 
Off
 
Off
 
Off
 
Check
 
the
 
following
 
first:
 
v
   
Is
 
power
 
cord
 
plugged
 
in?
 
v
   
Is
 
the
 
power
 
strip
 
on?
Failing
 
power
 
supply
 
Off
 
(After
 
pressing
 
the
 
power
 
button)
 
On
 
Off
 
Failing
 
system
 
board
 
On
 
On
 
On
 
Failing
 
power
 
supply
 
On
 
On
 
Off
 
Normal
 
working
 
conditions,
 
but
 
if
 
your
 
computer
 
is
 
not
 
working
 
correctly
 
then
 
you
 
have
 
a
 
failing
 
system
 
board
 
or
 
a
 
failing
 
microprocessor
  
If
 
you
 
cannot
 
correct
 
the
 
problem,
 
have
 
your
 
computer
 
serviced.
 
Note:
  
To
 
reset
 
the
 
computer
 
once
 
a
 
yellow
 
LED
 
is
 
on,
 
unplug
 
the
 
power
 
cord.
 
PC-Doctor
 
for
 
DOS
 
Diagnostics
 
The
 
PC-Doctor
 
for
 
DOS
 
Diagnostics
 
program
 
runs
 
independently
 
of
 
the
 
operating
 
system.
 
You
 
can
 
use
 
this
 
program
 
to
 
test
 
hardware
 
components
 
of
 
your
 
computer.
 
You
 
can
 
use
 
this
 
program
 
when
 
other
 
methods
 
are
 
not
 
available
 
or
 
have
 
not
 
been
 
successful
 
in
 
isolating
 
a
 
possible
 
hardware
 
problem.
 
You
 
can
 
run
 
the
 
diagnostics
 
from
 
the
 
Rescue
 
and
 
Recovery
 
workspace
 
on
 
your
 
hard
 
disk.
 
Alternatively,
 
you
 
can
 
create
 
bootable
 
diagnostics
 
diskettes
 
from
 
the
 
Rescue
 
and
 
Recovery
 
workspace.
 
You
 
can
 
also
 
download
 
the
 
latest
 
version
 
of
 
the
 
diagnostics
 
program
 
from
 
http://www.lenovo.com/think/support/
 
on
 
the
 
World
 
Wide
 
Web.
 
Type
 
your
 
machine
 
type
 
and
 
model
 
number
 
into
 
the
 
Quick
 
Path
 
field
 
to
 
find
 
the
 
downloadable
 
files
 
that
 
are
 
specific
 
to
 
your
 
computer.
 
 
Chapter
 
5.
 
Troubleshooting
 
and
 
diagnostics
 
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