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Lenovo 7611 Manuel D’Utilisation

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If
 
any
 
unsafe
 
conditions
 
are
 
present,
 
you
 
must
 
determine
 
how
 
serious
 
the
 
apparent
 
hazard
 
could
 
be
 
and
 
whether
 
you
 
can
 
continue
 
without
 
first
 
correcting
 
the
 
problem.
 
Consider
 
these
 
conditions
 
and
 
the
 
safety
 
hazards
 
they
 
present:
 
v
   
Electrical
 
hazards,
 
especially
 
primary
 
power
 
(primary
 
voltage
 
on
 
the
 
frame
 
can
 
cause
 
serious
 
or
 
fatal
 
electrical
 
shock).
 
v
   
Explosive
 
hazards,
 
such
 
as
 
a
 
damaged
 
CRT
 
face
 
or
 
bulging
 
capacitor
 
v
   
Mechanical
 
hazards,
 
such
 
as
 
loose
 
or
 
missing
 
hardware
 
The
 
guide
 
consists
 
of
 
a
 
series
 
of
 
steps
 
presented
 
in
 
a
 
checklist.
 
Begin
 
the
 
checks
 
with
 
the
 
power
 
off,
 
and
 
the
 
power
 
cord
 
disconnected.
 
Checklist:
 
1.
   
Check
 
exterior
 
covers
 
for
 
damage
 
(loose,
 
broken,
 
or
 
sharp
 
edges).
 
2.
   
Power-off
 
the
 
computer.
 
Disconnect
 
the
 
power
 
cord.
 
3.
   
Check
 
the
 
power
 
cord
 
for:
 
a.
   
A
 
third-wire
 
ground
 
connector
 
in
 
good
 
condition.
 
Use
 
a
 
meter
 
to
 
measure
 
third-wire
 
ground
 
continuity
 
for
 
0.1
 
ohm
 
or
 
less
 
between
 
the
 
external
 
ground
 
pin
 
and
 
frame
 
ground.
 
b.
   
The
 
power
 
cord
 
should
 
be
 
the
 
appropriate
 
type
 
as
 
specified
 
in
 
the
 
parts
 
listings.
 
c.
   
Insulation
 
must
 
not
 
be
 
frayed
 
or
 
worn.
4.
   
Remove
 
the
 
cover.
 
5.
   
Check
 
for
 
any
 
obvious
 
alterations.
 
Use
 
good
 
judgment
 
as
 
to
 
the
 
safety
 
of
 
any
 
alterations.
 
6.
   
Check
 
inside
 
the
 
unit
 
for
 
any
 
obvious
 
unsafe
 
conditions,
 
such
 
as
 
metal
 
filings,
 
contamination,
 
water
 
or
 
other
 
liquids,
 
or
 
signs
 
of
 
fire
 
or
 
smoke
 
damage.
 
7.
   
Check
 
for
 
worn,
 
frayed,
 
or
 
pinched
 
cables.
 
8.
   
Check
 
that
 
the
 
power-supply
 
cover
 
fasteners
 
(screws
 
or
 
rivets)
 
have
 
not
 
been
 
removed
 
or
 
tampered
 
with.
Handling
 
electrostatic
 
discharge-sensitive
 
devices
 
Any
 
computer
 
part
 
containing
 
transistors
 
or
 
integrated
 
circuits
 
(ICs)
 
should
 
be
 
considered
 
sensitive
 
to
 
electrostatic
 
discharge
 
(ESD).
 
ESD
 
damage
 
can
 
occur
 
when
 
there
 
is
 
a
 
difference
 
in
 
charge
 
between
 
objects.
 
Protect
 
against
 
ESD
 
damage
 
by
 
equalizing
 
the
 
charge
 
so
 
that
 
the
 
machine,
 
the
 
part,
 
the
 
work
 
mat,
 
and
 
the
 
person
 
handling
 
the
 
part
 
are
 
all
 
at
 
the
 
same
 
charge.
 
Notes:
  
1.
   
Use
 
product-specific
 
ESD
 
procedures
 
when
 
they
 
exceed
 
the
 
requirements
 
noted
 
here.
 
2.
   
Make
 
sure
 
that
 
the
 
ESD
 
protective
 
devices
 
you
 
use
 
have
 
been
 
certified
 
(ISO
 
9000)
 
as
 
fully
 
effective.
 
When
 
handling
 
ESD-sensitive
 
parts:
 
v
   
Keep
 
the
 
parts
 
in
 
protective
 
packages
 
until
 
they
 
are
 
inserted
 
into
 
the
 
product.
 
v
   
Avoid
 
contact
 
with
 
other
 
people
 
while
 
handling
 
the
 
part.
 
v
   
Wear
 
a
 
grounded
 
wrist
 
strap
 
against
 
your
 
skin
 
to
 
eliminate
 
static
 
on
 
your
 
body.
 
 
6
 
Hardware
 
Maintenance
 
Manual