Chapter
1.
About
this
manual
This
manual
contains
service
and
reference
information
for
Lenovo
computers
listed
on
the
cover.
It
is
intended
only
for
trained
servicers
who
are
familiar
with
Lenovo
computer
products.
Before
servicing
a
Lenovo
product,
be
sure
to
read
the
Safety
Information.
See
Chapter
2,
“Safety
information,”
on
page
3.
The
Symptom-to-FRU
Index
and
Additional
Service
Information
chapters
are
not
specific
to
any
machine
type
and
are
applicable
to
all
ThinkCentre
computers.
This
manual
includes
a
complete
FRU
part
number
listing
for
each
machine
type
and
model
listed
on
the
cover.
If
you
have
internet
access,
FRU
part
numbers
are
also
available
at:
http:/www.lenovo.com/support
Important
Safety
Information
Be
sure
to
read
all
caution
and
danger
statements
in
this
book
before
performing
any
of
the
instructions.
Veuillez
lire
toutes
les
consignes
de
type
DANGER
et
ATTENTION
du
présent
document
avant
d’exécuter
les
instructions.
Lesen
Sie
unbedingt
alle
Hinweise
vom
Typ
″
ACHTUNG
″
oder
″
VORSICHT
″
in
dieser
Dokumentation,
bevor
Sie
irgendwelche
Vorgänge
durchführen
Leggere
le
istruzioni
introdotte
da
ATTENZIONE
e
PERICOLO
presenti
nel
manuale
prima
di
eseguire
una
qualsiasi
delle
istruzioni
Certifique-se
de
ler
todas
as
instruções
de
cuidado
e
perigo
neste
manual
antes
de
executar
qualquer
uma
das
instruções
Es
importante
que
lea
todas
las
declaraciones
de
precaución
y
de
peligro
de
este
manual
antes
de
seguir
las
instrucciones.
©
Lenovo
2005,
2007.
Portions
©
IBM
Corp.
2005,
2006.
1
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