Note:
See
“System
replaceable
units”
on
page
144
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Symptom
FRU/action
The
server
does
not
turn
off.
1.
Verify
whether
you
are
using
an
ACPI
or
non-ACPI
operating
system.
If
you
are
using
a
non-ACPI
operating
system:
a.
Press
Ctrl+Alt+Delete.
b.
Turn
off
the
system
by
holding
the
power-control
button
for
4
seconds.
c.
If
server
fails
during
BIOS
POST
and
power-control
button
does
not
work,
remove
the
AC
power
cord.
2.
If
the
problem
remains
or
if
you
are
using
an
operating
system
with
Advanced
Configuration
and
Power
Management
(ACPI)
awareness,
suspect
the
system
board.
The
procedure
to
check
for
ACPI
is
to
locate
the
file
named
HAL.dll;
ACPI
is
present
if
the
internal
name
HALACPI.dll
appears
after
you
right-click
on
the
HAL.dll
file
name
→
choose
Properties
→
select
Version
tab
→
click
Internal
Name
.
Serial
port
error
symptoms
Note:
See
“System
replaceable
units”
on
page
144
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Symptom
FRU/action
The
number
of
serial
ports
identified
by
the
operating
system
is
less
than
the
number
of
serial
ports
installed.
1.
Verify
that:
v
Each
port
is
assigned
a
unique
address
by
the
Configuration/Setup
Utility
program
and
none
of
the
serial
ports
is
disabled.
v
The
serial-port
adapter,
if
you
installed
one,
is
seated
properly.
2.
Failing
serial
port
adapter.
A
serial
device
does
not
work.
1.
Verify
that:
v
The
device
is
compatible
with
the
server.
v
The
serial
port
is
enabled
and
is
assigned
a
unique
address.
v
The
device
is
connected
to
the
correct
port
(see
“Input/output
connectors”
on
page
51).
2.
Failing
serial
device.
3.
Serial
adapter,
if
installed.
4.
System
board.
130
xSeries
236
Type
8841:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
Summary of Contents for 884155U
Page 1: ...xSeries 236 Type 8841 Hardware Maintenance Manual and Troubleshooting Guide...
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Page 3: ...xSeries 236 Type 8841 Hardware Maintenance Manual and Troubleshooting Guide...
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Page 173: ...Appendix B Safety information 163...
Page 174: ...164 xSeries 236 Type 8841 Hardware Maintenance Manual and Troubleshooting Guide...
Page 175: ...Appendix B Safety information 165...
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Page 177: ...Appendix B Safety information 167...
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Page 179: ...Appendix B Safety information 169...
Page 189: ...Appendix B Safety information 179...
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Page 191: ...Appendix B Safety information 181...
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Page 210: ...Part Number 25K8114 1P P N 25K8114...