IBM HS40 Hardware Maintenance Manual - Page 102

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Note: See Chapter 7, "Parts listing, Type 8839," on page 105 to determine which components should be replaced by a field service technician. Monitor problems Symptom FRU/action Testing the monitor. See the information that comes with the monitor for adjusting and testing instructions. (Some IBM monitors have their own self-tests.) The screen is blank. 1. Make sure that: v The keyboard/mouse/video select button LED on the front of the blade server is lit, indicating that the blade server is connected to the shared BladeCenter monitor. v The system power cord is plugged into the BladeCenter power module and a working electrical outlet. v The monitor cables are connected properly. v The monitor is turned on and the Brightness and Contrast controls are adjusted correctly. v If the computers are C2T chained together, verify that: - The C2T chain cables are securely connected to the computers. - The C2T breakout cable is connected properly. - A computer that is turned on is selected. Important: In some memory configurations, the 3-3-3 beep code might sound during POST followed by a blank display screen. If this occurs and the Boot Fail Count feature in the Start Options of the Configuration/Setup Utility program is set to Enabled (its default setting), you must restart the computer three times to force the system BIOS to reset the CMOS values to the default configuration (memory connector or bank of connectors enabled). 2. If you have verified these items and the screen remains blank, replace: a. Monitor b. Management module on the BladeCenter (see the IBM BladeCenter Type 8677 Hardware Maintenance Manual and Troubleshooting Guide). Only the cursor appears. Make sure that the keyboard, video and mouse on the BladeCenter have not been switched to another blade server. If the problem remains, see"Undetermined problems" on page 101. The monitor goes blank when you direct it to a working blade server, or goes blank when you start some application programs in the blade servers. Make sure that the monitor cable is connected to the video port on the BladeCenter management module. Some IBM monitors have their own self-tests. If you suspect a problem with your monitor, see the information that comes with the monitor for adjusting and testing instructions. If you still cannot find the problem, try using the monitor with another blade server. If the problem persists, see the IBM BladeCenter Type 8677 Hardware Maintenance Manual and Troubleshooting Guide on the IBM BladeCenter Documentation CD. 92 BladeCenter HS40 Type 8839: Hardware Maintenance Manual and Troubleshooting Guide

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Note:
See
Chapter
7,
“Parts
listing,
Type
8839,”
on
page
105
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Monitor
problems
Symptom
FRU/action
Testing
the
monitor.
See
the
information
that
comes
with
the
monitor
for
adjusting
and
testing
instructions.
(Some
IBM
monitors
have
their
own
self-tests.)
The
screen
is
blank.
1.
Make
sure
that:
v
The
keyboard/mouse/video
select
button
LED
on
the
front
of
the
blade
server
is
lit,
indicating
that
the
blade
server
is
connected
to
the
shared
BladeCenter
monitor.
v
The
system
power
cord
is
plugged
into
the
BladeCenter
power
module
and
a
working
electrical
outlet.
v
The
monitor
cables
are
connected
properly.
v
The
monitor
is
turned
on
and
the
Brightness
and
Contrast
controls
are
adjusted
correctly.
v
If
the
computers
are
C2T
chained
together,
verify
that:
–
The
C2T
chain
cables
are
securely
connected
to
the
computers.
–
The
C2T
breakout
cable
is
connected
properly.
–
A
computer
that
is
turned
on
is
selected.
Important:
In
some
memory
configurations,
the
3-3-3
beep
code
might
sound
during
POST
followed
by
a
blank
display
screen.
If
this
occurs
and
the
Boot
Fail
Count
feature
in
the
Start
Options
of
the
Configuration/Setup
Utility
program
is
set
to
Enabled
(its
default
setting),
you
must
restart
the
computer
three
times
to
force
the
system
BIOS
to
reset
the
CMOS
values
to
the
default
configuration
(memory
connector
or
bank
of
connectors
enabled).
2.
If
you
have
verified
these
items
and
the
screen
remains
blank,
replace:
a.
Monitor
b.
Management
module
on
the
BladeCenter
(see
the
IBM
BladeCenter
Type
8677
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
).
Only
the
cursor
appears.
Make
sure
that
the
keyboard,
video
and
mouse
on
the
BladeCenter
have
not
been
switched
to
another
blade
server.
If
the
problem
remains,
see“Undetermined
problems”
on
page
101.
The
monitor
goes
blank
when
you
direct
it
to
a
working
blade
server,
or
goes
blank
when
you
start
some
application
programs
in
the
blade
servers.
Make
sure
that
the
monitor
cable
is
connected
to
the
video
port
on
the
BladeCenter
management
module.
Some
IBM
monitors
have
their
own
self-tests.
If
you
suspect
a
problem
with
your
monitor,
see
the
information
that
comes
with
the
monitor
for
adjusting
and
testing
instructions.
If
you
still
cannot
find
the
problem,
try
using
the
monitor
with
another
blade
server.
If
the
problem
persists,
see
the
IBM
BladeCenter
Type
8677
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
on
the
IBM
BladeCenter
Documentation
CD.
92
BladeCenter
HS40
Type
8839:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide