Lenovo Portable Computer User Guide
71
z
See
if
the
battery
hasn’t
been
used
for
a
long
time
since
it’s
fully
charged.
Recharge
it
and
try
it
again.
z
See
if
the
battery
interface
is
defiled.
z
It’s
the
chemical
feature
of
battery
that
its
service
time
will
shorted
after
charge
and
discharge
time
after
time.
It’s
a
normal
phenomenon.
z
If
there
are
still
problems,
contact
Lenovo
licensed
service
agencies.
4.2.9
LCD
is
black
z
See
if
your
computer
is
in
Hibernation
mode.
z
See
if
you
have
made
the
following
configuration
for
Power
Management:
shut
down
LCD
screen
after
some
time.
z
See
if
your
computer
has
connected
to
any
external
display
device
and
you
have
switched
to
it.
4.3
Service
Support
System
Except
the
maintenance
and
troubleshooting
actions
we
recommend,
we
strongly
recommend:
Do
not
disassemble
your
computer;
do
not
maintain,
repair
or
restructure
the
computer
by
yourself
or
by
agencies
that
are
not
licensed
by
Lenovo.
Please
contact
Lenovo
licensed
service
agencies
for
maintenance
and
repair
services.
You
can
get
free
or
charging
services
on
the
basis
of
Lennon’s
service
policies.
You
also
can
contact
service
support
systems
of
Lenovo
to
get
more
