Lenovo S9e Laptop User Guide - IdeaPad S9e and S10e - Page 94

Service, upgrades

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Service and upgrades CAUTION Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a service provider who is approved to repair your particular product. Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred to as options. Replacement parts approved for customer installation are referred to as Customer Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for customers to install options or replace CRUs. You must closely follow all instructions when installing or replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a product are zero. Before you remove the covers from a product equipped with an AC power cord, always make sure that the power is turned off and that the product is unplugged from any power source. For more information on CRUs, see Appendix B, "Customer Replaceable Units (CRUs)," on page 133. If you have any questions or concerns, contact the Customer Support Center. Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety. 86 Lenovo® IdeaPad™ S9e and S10e User Guide

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Service
and
upgrades
CAUTION
Do
not
attempt
to
service
a
product
yourself
unless
instructed
to
do
so
by
the
Customer
Support
Center
or
your
documentation.
Only
use
a
service
provider
who
is
approved
to
repair
your
particular
product.
Note:
Some
computer
parts
can
be
upgraded
or
replaced
by
the
customer.
Upgrades
typically
are
referred
to
as
options.
Replacement
parts
approved
for
customer
installation
are
referred
to
as
Customer
Replaceable
Units,
or
CRUs.
Lenovo
provides
documentation
with
instructions
when
it
is
appropriate
for
customers
to
install
options
or
replace
CRUs.
You
must
closely
follow
all
instructions
when
installing
or
replacing
parts.
The
Off
state
of
a
power
indicator
does
not
necessarily
mean
that
voltage
levels
inside
a
product
are
zero.
Before
you
remove
the
covers
from
a
product
equipped
with
an
AC
power
cord,
always
make
sure
that
the
power
is
turned
off
and
that
the
product
is
unplugged
from
any
power
source.
For
more
information
on
CRUs,
see
Appendix
B,
“Customer
Replaceable
Units
(CRUs),”
on
page
133.
If
you
have
any
questions
or
concerns,
contact
the
Customer
Support
Center.
Although
there
are
no
moving
parts
in
your
computer
after
the
power
cord
has
been
disconnected,
the
following
warnings
are
required
for
your
safety.
86
Lenovo
®
IdeaPad
™
S9e
and
S10e
User
Guide