Safety information, General safety, Grounding requirements – IBM 6643 User Manual
Page 110: Electrical safety, Safety, Information, General, Grounding, Requirements, Electrical
Safety
information
This
section
contains
the
safety
information
with
which
you
need
to
be
familiar,
before
you
service
an
IBM
mobile
computer.
General
safety
Follow
these
rules
to
ensure
general
safety:
v
Observe
good
housekeeping
in
the
area
of
the
machines
during
and
after
maintenance.
v
When
lifting
any
heavy
object:
1.
Ensure
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.
4.
Lift
by
standing
or
by
pushing
up
with
your
leg
muscles;
this
action
removes
the
strain
from
the
muscles
in
your
back.
Do
not
attempt
to
lift
any
objects
that
weigh
more
than
16
kg
(35
lb)
or
objects
that
you
think
are
too
heavy
for
you.
v
Do
not
perform
any
action
that
causes
hazards
to
the
customer,
or
that
makes
the
equipment
unsafe.
v
Before
you
start
the
machine,
ensure
that
other
service
representatives
and
the
customer’s
personnel
are
not
in
a
hazardous
position.
v
Place
removed
covers
and
other
parts
in
a
safe
place,
away
from
all
personnel,
while
you
are
servicing
the
machine.
v
Keep
your
tool
case
away
from
walk
areas
so
that
other
people
will
not
trip
over
it.
v
Do
not
wear
loose
clothing
that
can
be
trapped
in
the
moving
parts
of
a
machine.
Ensure
that
your
sleeves
are
fastened
or
rolled
up
above
your
elbows.
If
your
hair
is
long,
fasten
it.
v
Insert
the
ends
of
your
necktie
or
scarf
inside
clothing
or
fasten
it
with
a
nonconductive
clip,
approximately
8
centimeters
(3
inches)
from
the
end.
v
Do
not
wear
jewelry,
chains,
metal-frame
eyeglasses,
or
metal
fasteners
for
your
clothing.
Remember:
Metal
objects
are
good
electrical
conductors.
v
Wear
safety
glasses
when
you
are
doing
any
of
the
following:
hammering,
drilling
soldering,
cutting
wire,
attaching
springs,
using
solvents,
or
working
in
any
other
conditions
that
might
be
hazardous
to
your
eyes.
v
After
service,
reinstall
all
safety
shields,
guards,
labels,
and
ground
wires.
Replace
any
safety
device
that
is
worn
or
defective.
v
Reinstall
all
covers
correctly
before
returning
the
machine
to
the
customer.
Grounding
requirements
Electrical
grounding
of
the
computer
is
required
for
operator
safety
and
correct
system
function.
Proper
grounding
of
the
electrical
outlet
can
be
verified
by
a
certified
electrician.
Electrical
safety
Important
Use
only
approved
tools
and
test
equipment.
Some
hand
tools
have
handles
covered
with
a
soft
material
that
does
not
insulate
you
when
working
with
live
electrical
currents.
Many
customers
have,
near
their
equipment,
rubber
floor
mats
that
contain
small
conductive
fibers
to
decrease
electrostatic
discharges.
Do
not
use
this
type
of
mat
to
protect
yourself
from
electrical
shock.
102
Hardware
Maintenance
Manual