Lenovo B50-45 Hardware Maintenance Manual - Lenovo B50-xx, B50-30 Touch Notebo - Page 6

General safety - b50 35

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Lenovo B50-30/B50-30 Touch/B50-45/ B50-70 Hardware Maintenance Manual General safety Follow the following rules to ensure general safety: • Observe a good housekeeping in the area where the machines are put during and after the maintenance. • When lifting any heavy object: 1. Make sure that you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift it. 4. Lift it by standing or pushing up with your leg muscles; this action could avoid the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you. • Do not perform any action that causes hazards to the customer, or that makes the machine unsafe. • Before you start the machine, make sure that other service representatives and the customer are not in a hazardous position. • Please remove covers and other parts in a safe place, away from all personnel, while you are servicing the machine. • Keep your tool case away from walk areas so that other people will not trip it over. • Do not wear loose clothing that can be trapped in the moving parts of the machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it. • Insert the ends of your necktie or scarf inside clothing or fasten it with the nonconductive clip, about 8 centimeters (3 inches) from the end. • Do not wear jewelry, chains, metal‐frame eyeglasses, or metal fasteners for your clothing. Attention: Metal objects are good electrical conductors. • Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that may be hazardous to your eyes. • After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective. • Reinstall all covers correctly before returning the machine to the customer. • Fan louvers on the machine help to prevent the overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers. 2

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Lenovo B50-30/B50-30 Touch/B50-45/ B50-70
Hardware Maintenance Manual
2
Follow
 
the
 
following
 
rules
 
to
 
ensure
 
general
 
safety:
•
Observe
 
a
 
good
 
housekeeping
 
in
 
the
 
area
 
where
 
the
 
machines
 
are
 
put
 
during
 
and
 
after
 
the
 
maintenance.
•
When
 
lifting
 
any
 
heavy
 
object:
1.
Make
 
sure
 
that
 
you
 
can
 
stand
 
safely
 
without
 
slipping.
2.
Distribute
 
the
 
weight
 
of
 
the
 
object
 
equally
 
between
 
your
 
feet.
3.
Use
 
a
 
slow
 
lifting
 
force.
 
Never
 
move
 
suddenly
 
or
 
twist
 
when
 
you
 
attempt
 
to
 
lift
 
it.
4.
Lift
 
it
 
by
 
standing
 
or
 
pushing
 
up
 
with
 
your
 
leg
 
muscles;
 
this
 
action
 
could
 
avoid
 
the
 
strain
 
from
 
the
 
muscles
 
in
 
your
 
back.
 
Do
 
not
 
attempt
 
to
 
lift
 
any
 
object
 
that
 
weighs
 
more
 
than
 
16
 
kg
 
(35
 
lb)
 
or
 
that
 
you
 
think
 
is
 
too
 
heavy
 
for
 
you.
•
Do
 
not
 
perform
 
any
 
action
 
that
 
causes
 
hazards
 
to
 
the
 
customer,
 
or
 
that
 
makes
 
the
 
machine
 
unsafe.
•
Before
 
you
 
start
 
the
 
machine,
 
make
 
sure
 
that
 
other
 
service
 
representatives
 
and
 
the
 
customer
 
are
 
not
 
in
 
a
 
hazardous
 
position.
•
Please
 
remove
 
covers
 
and
 
other
 
parts
 
in
 
a
 
safe
 
place,
 
away
 
from
 
all
 
personnel,
 
while
 
you
 
are
 
servicing
 
the
 
machine.
•
Keep
 
your
 
tool
 
case
 
away
 
from
 
walk
 
areas
 
so
 
that
 
other
 
people
 
will
 
not
 
trip
 
it
 
over.
•
Do
 
not
 
wear
 
loose
 
clothing
 
that
 
can
 
be
 
trapped
 
in
 
the
 
moving
 
parts
 
of
 
the
 
machine.
 
Make
 
sure
 
that
 
your
 
sleeves
 
are
 
fastened
 
or
 
rolled
 
up
 
above
 
your
 
elbows.
 
If
 
your
 
hair
 
is
 
long,
 
fasten
 
it.
•
Insert
 
the
 
ends
 
of
 
your
 
necktie
 
or
 
scarf
 
inside
 
clothing
 
or
 
fasten
 
it
 
with
 
the
 
nonconductive
 
clip,
 
about
 
8
 
centimeters
 
(3
 
inches)
 
from
 
the
 
end.
•
Do
 
not
 
wear
 
jewelry,
 
chains,
 
metal
‐
frame
 
eyeglasses,
 
or
 
metal
 
fasteners
 
for
 
your
 
clothing.
Attention:
 
Metal
 
objects
 
are
 
good
 
electrical
 
conductors.
•
Wear
 
safety
 
glasses
 
when
 
you
 
are
 
hammering,
 
drilling,
 
soldering,
 
cutting
 
wire,
 
attaching
 
springs,
 
using
 
solvents,
 
or
 
working
 
in
 
any
 
other
 
conditions
 
that
 
may
 
be
 
hazardous
 
to
 
your
 
eyes.
•
After
 
service,
 
reinstall
 
all
 
safety
 
shields,
 
guards,
 
labels,
 
and
 
ground
 
wires.
 
Replace
 
any
 
safety
 
device
 
that
 
is
 
worn
 
or
 
defective.
•
Reinstall
 
all
 
covers
 
correctly
 
before
 
returning
 
the
 
machine
 
to
 
the
 
customer.
•
Fan
 
louvers
 
on
 
the
 
machine
 
help
 
to
 
prevent
 
the
 
overheating
 
of
 
internal
 
components.
 
Do
 
not
 
obstruct
 
fan
 
louvers
 
or
 
cover
 
them
 
with
 
labels
 
or
 
stickers.
General safety