Monitor
problems
Some
IBM
monitors
have
their
own
self-tests.
If
you
suspect
a
problem
with
your
monitor,
see
the
documentation
that
comes
with
the
monitor
for
instructions
for
testing
and
adjusting
the
monitor.
If
you
cannot
diagnose
the
problem,
call
for
service.
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
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
Testing
the
monitor
1.
Make
sure
the
monitor
cables
are
firmly
connected.
2.
Try
using
a
different
monitor
on
the
server,
or
try
using
the
monitor
being
tested
on
a
different
server.
3.
Run
the
diagnostic
programs.
If
the
monitor
passes
the
diagnostic
programs,
the
problem
might
be
a
video
device
driver.
4.
Reseat
the
following
components:
a.
Remote
Supervisor
Adapter
II
SlimLine
(if
one
is
present)
b.
I/O
board
5.
Replace
the
components
listed
in
step
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
The
screen
is
blank.
1.
If
the
server
is
attached
to
a
KVM
switch,
bypass
the
KVM
switch
to
eliminate
it
as
a
possible
cause
of
the
problem:
connect
the
keyboard
cable
directly
to
the
correct
connector
on
the
rear
of
the
server.
2.
Make
sure
that:
v
The
server
is
powered
on.
If
there
is
no
power
to
the
server,
see
v
The
monitor
cables
are
connected
correctly.
v
The
monitor
is
turned
on
and
the
brightness
and
contrast
controls
are
adjusted
correctly.
v
Make
sure
that
no
beep
codes
sounded
when
the
server
is
turned
on.
Important:
In
some
memory
configurations,
the
3-3-3
beep
code
might
sound
during
POST,
followed
by
a
blank
monitor
screen.
If
this
occurs
do
the
following:
a.
Turn
off
the
server.
b.
Move
the
memory
card
to
a
different
slot.
c.
Turn
on
the
server.
Note:
BIOS
will
see
a
new
configuration
and
automatically
re-enable
the
memory
slots
the
were
previously
disabled.
d.
Turn
off
the
server.
e.
Return
the
memory
card
to
the
slot
it
was
removed
from
in
f.
Turn
on
the
server.
3.
Make
sure
that
the
correct
server
is
controlling
the
monitor,
if
applicable.
4.
Make
sure
that
damaged
BIOS
code
is
not
affecting
the
video;
see
5.
Observe
the
checkpoint
LEDs
on
the
I/O
board;
if
the
codes
are
changing,
go
to
the
next
step.
If
the
codes
are
not
changing,
see
6.
See
44
IBM
System
x3950
Type
8878
and
System
x3950
E
Type
8879:
Problem
Determination
and
Service
Guide
