Lenovo TAB3 8 Hardware Maintenance Manual
26
This
section
presents
exploded
figures
with
the
instructions
to
indicate
how
to
remove
and
replace
the
FRU.
Make
sure
to
observe
the
following
general
rules:
1.
Do
not
attempt
to
service
any
computer
unless
you
have
been
trained
and
certified.
An
untrained
person
runs
the
risk
of
damaging
parts.
2.
Before
replacing
any
FRU,
review
3.
Begin
by
removing
any
FRUs
that
have
to
be
removed
before
the
failing
FRU.
Any
of
such
FRUs
are
listed
at
the
top
of
the
page.
Remove
them
in
the
order
in
which
they
are
listed.
4.
Follow
the
correct
sequence
in
the
steps
to
remove
the
FRU,
as
given
in
the
figures
by
the
numbers
in
square
callouts.
5.
When
turning
a
screw
to
replace
an
FRU,
turn
it
in
the
direction
as
given
by
the
arrow
in
the
figure.
6.
When
removing
the
FRU,
move
it
in
the
direction
as
given
by
the
arrow
in
the
figure.
7.
To
put
the
new
FRU
in
place,
reverse
the
removal
procedures
and
follow
any
of
the
notes
that
pertain
to
replacement.
For
information
about
connecting
and
arranging
internal
cables,
see
8.
When
replacing
an
FRU,
use
the
correct
screw
as
shown
in
the
procedures.
Attention:
After
replacing
an
FRU,
do
not
turn
on
the
computer
until
you
have
made
sure
that
all
screws,
springs,
and
other
small
parts
are
in
place
and
none
are
loose
inside
the
computer.
Verify
this
by
shaking
the
computer
gently
and
listening
for
rattling
sounds.
Metallic
parts
or
metal
flakes
can
cause
electrical
short
circuits.
Attention:
The
system
board
is
sensitive
to,
and
can
be
damaged
by,
electrostatic
discharge.
Before
touching
it,
establish
personal
grounding
by
touching
a
ground
point
with
one
hand
or
using
an
electrostatic
discharge
(ESD)
strap
(P/N
6405959)
to
remove
potential
shock
reasons.
Removing and replacing an FRU
DANGER
Before
removing
any
FRU,
turn
off
the
computer,
unplug
all
power
cords
from
electrical
outlets,
remove
the
battery
pack,
and
then
disconnect
any
of
the
interconnecting
cables.
