Lenovo RD210 User Manual
Page 168
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
the
Hardware
Maintenance
Manual
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only),”
that
step
must
be
performed
only
by
a
Trained
service
technician.
Symptom
Action
The
monitor
has
screen
jitter,
or
the
screen
image
is
wavy,
unreadable,
rolling,
or
distorted.
1.
If
the
monitor
self-tests
show
that
the
monitor
is
working
correctly,
consider
the
location
of
the
monitor.
Magnetic
fields
around
other
devices
(such
as
transformers,
appliances,
fluorescents,
and
other
monitors)
can
cause
screen
jitter
or
wavy,
unreadable,
rolling,
or
distorted
screen
images.
If
this
happens,
turn
off
the
monitor.
Attention:
Moving
a
color
monitor
while
it
is
turned
on
might
cause
screen
discoloration.
Move
the
device
and
the
monitor
at
least
305
mm
(12
in.)
apart,
and
turn
on
the
monitor.
Notes:
a.
To
prevent
diskette
drive
read/write
errors,
make
sure
that
the
distance
between
the
monitor
and
any
external
diskette
drive
is
at
least
76
mm
(3
in.).
2.
Reseat
the
monitor
cable.
3.
Replace
the
components
listed
in
step
2
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time:
a.
Monitor
cable
b.
Monitor
c.
(Trained
service
technician
only)
Replace
the
system
board.
Wrong
characters
appear
on
the
screen.
1.
If
the
wrong
language
is
displayed,
update
the
UEFI
code
(see
with
the
correct
language.
2.
Reseat
the
monitor
cable.
3.
Replace
the
components
listed
in
step
2
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time:
a.
Monitor
cable
b.
Monitor
c.
(Trained
service
technician
only)
Replace
the
system
board.
152
ThinkServer
RD210
Types
3795,
3796,
3818,
and
3819:
Installation
and
User
Guide