IBM 849130u Installation Guide - Page 50

Monitor, problems

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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 the parts listing in the Problem Determination and Service Guide 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 that the monitor cables are firmly connected. 2. Try using a different monitor on the server, or try testing the monitor on a different server. 3. Run the diagnostic programs (see the Problem Determination and Service Guide). If the monitor passes the diagnostic programs, the problem might be a video device driver. 4. Reseat the Remote Supervisor Adapter II (if one is present). 5. Replace the following components one at a time, in the order shown, restarting the server each time: a. Remote Supervisor Adapter II (if one is present) b. (Trained service technician only) System board 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 monitor cable directly to the correct connector on the rear of the server. 2. Make sure that: v The server is turned on. If there is no power to the server, see "Power problems" on page 41. v The monitor cables are connected correctly. v The monitor is turned on and the brightness and contrast controls are adjusted correctly. v No beep codes sound 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 and the Boot Fail Count option in the Start Options of the Configuration/Setup Utility program is enabled, you must restart the server three times to reset the configuration settings to the default configuration (the memory connector or bank of connectors enabled). 3. Make sure that the correct server is controlling the monitor, if applicable. The monitor works when you turn on the server, but the screen goes blank when you start some application programs. If the problem remains, call for service. Make sure that: v The application program is not setting a display mode that is higher than the capability of the monitor. v You installed the necessary device drivers for the application. If the problem remains, call for service. 38 IBM xSeries 306m Types 8849 and 8491: Installation Guide

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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
the
parts
listing
in
the
Problem
Determination
and
Service
Guide
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
that
the
monitor
cables
are
firmly
connected.
2.
Try
using
a
different
monitor
on
the
server,
or
try
testing
the
monitor
on
a
different
server.
3.
Run
the
diagnostic
programs
(see
the
Problem
Determination
and
Service
Guide
).
If
the
monitor
passes
the
diagnostic
programs,
the
problem
might
be
a
video
device
driver.
4.
Reseat
the
Remote
Supervisor
Adapter
II
(if
one
is
present).
5.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time:
a.
Remote
Supervisor
Adapter
II
(if
one
is
present)
b.
(Trained
service
technician
only)
System
board
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
monitor
cable
directly
to
the
correct
connector
on
the
rear
of
the
server.
2.
Make
sure
that:
v
The
server
is
turned
on.
If
there
is
no
power
to
the
server,
see
“Power
problems”
on
page
41.
v
The
monitor
cables
are
connected
correctly.
v
The
monitor
is
turned
on
and
the
brightness
and
contrast
controls
are
adjusted
correctly.
v
No
beep
codes
sound
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
and
the
Boot
Fail
Count
option
in
the
Start
Options
of
the
Configuration/Setup
Utility
program
is
enabled,
you
must
restart
the
server
three
times
to
reset
the
configuration
settings
to
the
default
configuration
(the
memory
connector
or
bank
of
connectors
enabled).
3.
Make
sure
that
the
correct
server
is
controlling
the
monitor,
if
applicable.
If
the
problem
remains,
call
for
service.
The
monitor
works
when
you
turn
on
the
server,
but
the
screen
goes
blank
when
you
start
some
application
programs.
Make
sure
that:
v
The
application
program
is
not
setting
a
display
mode
that
is
higher
than
the
capability
of
the
monitor.
v
You
installed
the
necessary
device
drivers
for
the
application.
If
the
problem
remains,
call
for
service.
38
IBM
xSeries
306m
Types
8849
and
8491:
Installation
Guide