IBM eServer xSeries 455 Type 8855 User manual

IBM xSeries 455
Type 8855
Hardware Maintenance Manual and Troubleshooting
Guide
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IBM xSeries 455
Type 8855
Hardware Maintenance Manual and Troubleshooting
Guide
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Note
Before using this information and the product it supports, read Appendix C, “Notices,” on page 255.
Fourth Edition (February 2005)
The most recent version of this document is available on the World Wide Web at
http://www.ibm.com/pc/support.
The following paragraph does not apply the United Kingdom or any country where such provisions are
inconsistent with local law:
INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION ″AS IS″WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE. Some states do not allow
disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to you.
This information could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in new editions of the publication. IBM may make
improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time.
This publication was developed for products and services offered in the United States of America. IBM may not offer
the products, services, or features discussed in this document in other countries, and the information is subject to
change without notice. Consult your local IBM representative for information on the products, services, and features
available in your area.
Requests for technical information about IBM products should be made to your IBM reseller or IBM marketing
representative.
©Copyright International Business Machines Corporation 2003. All rights reserved.
US Government Users Restricted Rights –Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

About this manual
This manual contains diagnostic information, aSymptom-to-FRU index, service
information, error codes, error messages, and configuration information for the IBM
®
Eserver
™ xSeries ® 455 Type 8855 server.
Important: The field replaceable unit (FRU) procedures are intended for trained
servicers who are familiar with IBM products. Before servicing an IBM
product, be sure to review “Safety information” on page 215.
Important safety information
Be sure to read all caution and danger statements in this book before performing
any of the instructions. See “Safety information” on page 215.
Leia todas as instruções de cuidado eperigo antes de executar qualquer operação.
Prenez connaissance de toutes les consignes de type Attention et Danger avant de
procéder aux opérations décrites par les instructions.
Lesen Sie alle Sicherheitshinweise, bevor Sie eine Anweisung ausführen.
Accertarsi di leggere tutti gli avvisi di attenzione edi pericolo prima di effettuare
qualsiasi operazione.
Lea atentamente todas las declaraciones de precaución ypeligro ante de llevar a
cabo cualquier operación.
WARNING: Handling the cord on this product or cords associated with accessories
sold with this product will expose you to lead, achemical known to the State of
California to cause cancer, and birth defects or other reproductive harm. Wash
hands after handling.
ADVERTENCIA: El contacto con el cable de este producto ocon cables de
accesorios que se venden junto con este producto, pueden exponerle al plomo, un
elemento químico que en el estado de California de los Estados Unidos está
considerado como un causante de cancer yde defectos congénitos, además de
otros riesgos reproductivos. Lávese las manos después de usar el producto.
Online support
You can download the most current diagnostic, system abstraction layer/extensible
firmware interface (SAL/EFI) flash, and device driver files from
http://www.ibm.com/pc/support on the World Wide Web.
©Copyright IBM Corp. 2003 iii

iv IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

Contents
About this manual ....................... iii
Important safety information .................... iii
Online support ......................... iii
Chapter 1. General information...................1
Related publications .......................1
Notices and statements used in this book ...............2
Features and specifications.....................3
What your server offers ......................4
Active Memory .........................5
Memory scrubbing and Memory ProteXion ..............5
Memory mirroring .......................5
Hot-swap memory .......................5
Server controls, LEDs, and power ..................6
Front view ..........................6
Rear view ..........................7
Server power features......................9
Chapter 2. Configuring the server .................11
Using the EFI Firmware Boot Manager ................12
Using the Configuration/Setup Utility program .............12
Starting the Configuration/Setup Utility program ............12
Configuration/Setup Utility menu choices ..............13
Passwords .........................15
Using the RAID configuration programs ................16
Using the LSI Logic Configuration Utility program ...........16
Using ServeRAID Manager ...................17
Setting up the Remote Supervisor Adapter...............20
Remote Supervisor Adapter features ................20
Setup requirements ......................20
Cabling and configuring the Remote Supervisor Adapter.........21
Using the ASM interconnect network ................29
Configuring the Gigabit Ethernet controller ...............33
Configuring scalable partitions ...................34
Creating ascalable partition ...................34
Deleting ascalable partition ...................36
Chapter 3. Diagnostics .....................37
General checkout ........................37
Diagnostic tools overview .....................39
POST error codes and messages ..................39
System-error logs ........................40
Light Path Diagnostics feature ...................40
The diagnostics panel .....................41
LEDs on the top of the server ..................41
LEDs on the system boards ...................41
Diagnostic display ........................42
Diagnostic programs, error codes, and messages ............42
Text messages ........................42
Starting the AMIDiag program ..................42
AMIDiag menus .......................44
System diagnostic tests.....................46
Memory diagnostic tests ....................47
©Copyright IBM Corp. 2003 v

IDE device diagnostic tests ...................48
SCSI diagnostic tests .....................50
Video diagnostic tests .....................53
USB diagnostic tests......................54
Miscellaneous diagnostic tests ..................61
Options menu ........................64
Ethernet diagnostic tests ....................71
Diagnostic error code tables ...................71
Small computer system interface (SCSI) messages ...........71
Recovering SAL/EFI code .....................71
Clearing apower-on password ...................73
Clearing CMOS.........................74
Power checkout ........................74
Troubleshooting the Ethernet controller ................75
Network connection problems ..................75
Ethernet controller troubleshooting chart ..............76
Ethernet controller messages ..................76
Chapter 4. Installing options ...................77
Installation guidelines ......................77
System reliability considerations .................77
Working inside aserver with power on ...............78
Handling static-sensitive devices .................78
Major components of the xSeries 455 server ..............79
Midplane board LEDs ......................80
Processor board internal connectors and LEDs .............80
PCI-X board internal connectors and LEDs ..............82
Memory board internal connectors and LEDs ..............82
Memory switch card LEDs.....................83
I/O-board internal connectors....................83
Opening the cover .......................84
Removing and replacing the bezel..................85
Removing and replacing ahot-swap power supply ............86
Installing an adapter .......................88
Cabling aServeRAID adapter ...................91
Installing ahot-swap hard disk drive .................93
Installing aCD-ROM or DVD-ROM drive ...............94
Installing memory ........................95
Hot-replacing DIMMs.......................98
Installing and replacing amicroprocessor and power module ........99
Replacing and troubleshooting fans ................. 107
Replacing fan 1or 2..................... 107
Replacing fan 3or 4..................... 108
Replacing the battery ...................... 109
Completing the installation .................... 111
Closing the cover....................... 111
Connecting the cables .....................112
Updating your server configuration ................ 125
Installing the server in arack .................. 125
Chapter 5. Field replaceable units ................ 127
Memory-board assembly ..................... 127
Memory switch card and cable .................. 128
Processor-board assembly .................... 129
Microprocessor and power module ................ 131
Processor-board VRM ..................... 132
vi IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

PCI-X board assembly ..................... 133
Midplane board ....................... 135
Midplane-board VRM ..................... 136
PCI-X board ........................ 137
Active PCI assembly ..................... 140
I/O board, riser card, and Remote Supervisor Adapter ......... 141
Restoring the nonvolatile EFI variables .............. 145
Top cover assembly ...................... 148
Top power board ........................ 149
Hard disk drive backplane .................... 150
Media bay card ........................ 152
Memory-board retaining latches .................. 152
AC box assembly mechanism ................... 154
Media-extract mechanism .................... 155
Power/reset card assembly .................... 156
Light Path card ........................ 157
Chapter 6. Symptom-to-FRU index ................ 159
Light Path LED errors ...................... 159
System-error log entries ..................... 163
SAL/EFI messages ...................... 163
Service processor messages .................. 170
Diagnostic error codes ..................... 175
System-error codes...................... 176
IDE CD test error codes .................... 178
ATAPI removables test error codes ................ 179
IDE DVD-ROM drive test error codes ............... 181
SCSI test error codes ..................... 181
Video test error codes ..................... 184
USB test error codes ..................... 184
Serial port test error codes ................... 186
Advanced System Management error codes ............ 187
Scalability port and RXE port error codes.............. 190
Memory test error codes .................... 193
LED error codes ....................... 195
Error symptoms ........................ 196
Power supply LED errors..................... 200
Diagnostic display error codes ................... 201
Hardware status error codes .................. 201
SAL/EFI progress codes .................... 203
SCSI error messages ...................... 205
Ethernet error messages ..................... 205
Undetermined problems ..................... 205
Chapter 7. Parts listing xSeries 455 Type 8855............ 207
System ........................... 207
Figure A........................... 209
Figure B........................... 210
Keyboard CRUs ........................211
Power cord CRUs ....................... 212
Appendix A. Getting help and technical assistance .......... 213
Before you call ........................ 213
Using the documentation..................... 213
Getting help and information from the World Wide Web ......... 214
Software service and support ................... 214
Contents vii

Hardware service and support ................... 214
Appendix B. Related service information .............. 215
Safety information ....................... 215
General safety ....................... 215
Electrical safety ....................... 216
Safety inspection guide .................... 217
Handling static-sensitive devices ................. 218
Grounding requirements .................... 218
Safety notices (multilingual translations) .............. 219
Appendix C. Notices ...................... 255
Edition notice ......................... 255
Trademarks.......................... 256
Important notes ........................ 256
Product recycling and disposal .................. 257
Battery return program ..................... 257
Electronic emission notices .................... 258
Federal Communications Commission (FCC) statement ........ 258
Industry Canada Class Aemission compliance statement ........ 258
Australia and New Zealand Class Astatement ............ 258
United Kingdom telecommunications safety requirement ........ 258
European Union EMC Directive conformance statement ........ 258
Taiwanese Class Awarning statement ............... 259
Chinese Class Awarning statement ................ 259
Japanese Voluntary Control Council for Interference (VCCI) statement 259
Power cords ......................... 259
Index ............................ 263
viii IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

Chapter 1. General information
Your IBM Eserver
™ xSeries 455 Type 8855 is afour U-high 1 rack model server for
high-availability 64-bit database processing.
Performance, ease of use, reliability, and expansion capabilities were key
considerations in the design of your server. These design features make it possible
for you to customize the system hardware to meet your needs today and provide
flexible expansion capabilities for the future.
Your server contains IBM Enterprise X-Architecture
™ technologies, which help
increase performance and reliability. For more information, see “What your server
offers” on page 4.
You can obtain up-to-date information about your server and other IBM server
products at http://www.ibm.com/eserver/xseries/.
For service, assistance, or additional information on the World Wide Web, see
Appendix A, “Getting help and technical assistance,” on page 213.
Related publications
This Hardware Maintenance Manual and Troubleshooting Guide contains
information to help you solve the problem yourself or to provide helpful information
to aservice technician.
In addition to this Hardware Maintenance Manual and Troubleshooting Guide,the
following xSeries 455 Type 8855 documentation is provided with your server:
vInstallation Guide
This printed publication contains setup and installation instructions.
vRack Installation Instructions
This printed publication contains the instructions to install your server in arack.
vSafety Book
This multilingual publication is provided in Portable Document Format (PDF) on
the IBM xSeries Documentation CD. It contains translated versions of the caution
and danger statements that appear in the documentation for your server. Each
caution and danger statement has an assigned number, which you can use to
locate the corresponding statement in your native language.
vUser’s Guide
This publication is provided in PDF on the IBM xSeries Documentation CD. It
contains general information about your server, including information about
features, how to configure your server, and how to get help.
vOption Installation Guide
This publication is provided in PDF on the IBM xSeries Documentation CD. It
contains instructions to install, remove, and connect optional devices supported
by your server.
Depending on your server model, additional publications might be included on the
IBM xSeries Documentation CD.
1. Racks are marked in vertical increments of 1.75 inches each. Each increment is referred to as aunit, or ″U.″Aone-U-high device
is 1.75 inches tall.
©Copyright IBM Corp. 2003 1

Notices and statements used in this book
The caution and danger statements that appear in this book are also in the
multilingual Safety Information book, which is on the IBM xSeries Documentation
CD. Each statement is numbered for reference to the corresponding statement in
the Safety Information book.
The following notices and statements are used in the documentation:
vNotes: These notices provide important tips, guidance, or advice.
vImportant: These notices provide information or advice that might help you avoid
inconvenient or problem situations.
vAttention: These notices indicate potential damage to programs, devices, or
data. An attention notice is placed just before the instruction or situation in which
damage could occur.
vCaution: These statements indicate situations that can be potentially hazardous
to you. Acaution statement is placed just before the description of apotentially
hazardous procedure step or situation.
vDanger: These statements indicate situations that can be potentially lethal or
extremely hazardous to you. Adanger statement is placed just before the
description of apotentially lethal or extremely hazardous procedure step or
situation.
2IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

Features and specifications
The following information is asummary of the features and specifications of your
server. Depending on your server model, some features might not be available, or
some specifications might not apply.
Microprocessor:
vIntel
™® Itanium 21.3 GHz or higher,
depending on server model
v3MB (minimum) Level-3 cache
v200 MHz front-side bus (FSB), at two data
transfers per cycle, yielding a400 MHz system
bus (minimum)
vSupport for up to four microprocessors
vXceL4
™ Server Accelerator Cache: 64 MB
Note: Use the Configuration/Setup Utility
program to determine the type and speed of the
microprocessors in your server.
Active Memory
™
:
vMinimum: 1GB
vMaximum: 56 GB
vType: 2-way interleaved PC2100, ECC DDR
SDRAM, registered DIMMs only
vSupports 512 MB, 1GB, and 2GB dual inline
memory modules (DIMMs)
Drives standard:
DVD/CD-RW: IDE
Expansion bays:
vTwo removable media bays (one DVD/CD-RW
preinstalled)
vSupports up to two internal Ultra320 SCSI
hard disk drives
Active
™ PCI-X expansion slots:
Six 64-bit Active PCI-X expansion slots:
vTwo 66 MHz PCI-X slots
vTwo 100 MHZ PCI-X slots
vTwo 133 MHZ PCI-X slots
Cooling:
Four hot-swap fans
vTwo 150 mm x51 mm fans
vTwo 150 mm x38 mm fans
Acoustical noise emissions:
vDeclared sound power, idle: 6.5 bels
vDeclared sound power, operating: 6.5 bels
vBystander sound pressure, idle: 49 dBa
vBystander sound pressure, operating: 49 dBa
Power supply:
Two power supplies: 550 watts at 100-127 Vac
or 1050 watts at 200-240 Vac (hot-swappable
and redundant at 200-240 Vac only)
Video:
vIntegrated ATI RageXL video
vPCI bus interface
vCompatible with SVGA
v8MB SDRAM video memory
Size (4 U):
vHeight: 17.5 cm (6.9 inches, 4U)
vDepth: 71.3 cm (28.1 inches)
vWidth: 44 cm (17.3 inches)
vMaximum weight: 54.3 kg (120 lb),
depending on your configuration
Integrated functions:
vBroadcom 5704 10/100/1000 dual port
Ethernet controller
vLight path diagnostics
vOne external and one internal Ultra320 SCSI
port (dual-channel integrated controller with
RAID capabilities)
vRemote Supervisor Adapter (service
processor)
–ASM interconnect (peer-to-peer) port
–Ethernet port
–Serial port
vIDE controller
vRXE Management Port
vRXE Expansion Ports
vUSB ports
vSerial port
vSMP Expansion Ports
vWake on LAN
®
Environment:
vAir temperature:
–Server on: 10° to 35°C (50.0° to 95.0°F).
Altitude: 0to 914 m(2998.7 ft)
–Server on: 10° to 32°C (50.0° to 89.6°F).
Altitude: 0to 2133 m(6998.0 ft)
–Server off: -40° to 60°C
(-104° to 140°F). Maximum altitude: 2133
m(6998.0 ft)
v
Humidity:
–Server on: 8% to 80%
–Server off: 5% to 100%
Heat output:
Approximate heat output in British thermal units
(Btu) per hour
vMinimum configuration: 854 Btu (250 watts)
vMaximum configuration: 2646 Btu (775 watts)
Electrical input:
vSine-wave input (50-60 Hz) required
vInput voltage low range:
–Minimum: 100 Vac
–Maximum: 127 Vac
vInput voltage high range:
–Minimum: 200 Vac
–Maximum: 240 Vac
v
Input kilovolt-amperes (kVA) approximately:
–Minimum: 0.250 kVA
–Maximum: 1.3 kVA
Notes:
1. Power consumption and heat output vary
depending on the number and type of
optional features installed and the
power-management optional features in use.
2. These levels were measured in controlled
acoustical environments according to the
procedures specified by the American
National Standards Institute (ANSI) S12.10
and ISO 7779 and are reported in
accordance with ISO 9296. Actual
sound-pressure levels in agiven location
might exceed the average values stated
because of room reflections and other
nearby noise sources. The declared
sound-power levels indicate an upper limit,
below which alarge number of computers
will operate.
Chapter 1. General information 3

What your server offers
Your server includes the following features and technologies:
vIBM Enterprise X-Architecture technology
Enterprise X-Architecture technology combines proven, innovative IBM designs to
make your Intel-processor-based server powerful, scalable, and reliable. For
more information, go to
http://www.ibm.com/pc/us/eserver/xseries/xarchitecture/enterprise/index.html
–Active Memory
The Active Memory feature improves the reliability of memory through
hot-swap memory, memory mirroring, memory scrubbing, and the Memory
ProteXion feature. For more information, see “Active Memory” on page 5.
–Large system-memory capacity
The memory bus supports up to 56 GB of system memory. The memory
controller provides error code correcting (ECC) support for up to 28
industry-standard PC2100, 2.5 V, 184-pin, 133 megahertz (MHz), registered,
double data rate (DDR), synchronous dynamic random access memory
(SDRAM) dual inline memory modules (DIMMs).
–XceL4
™ Server Accelerator Cache
The XceL4 Server Accelerator Cache provides 64 MB of external Level-4
cache, which increases effective memory bandwidth.
vIntegrated network support
Your server comes with an integrated Broadcom Gigabit Ethernet controller,
which supports connection to a10-Mbps, 100-Mbps, or 1000-Mbps network. For
more information, see “Configuring the Gigabit Ethernet controller” on page 33.
vLight path diagnostics
Light path diagnostics provides LEDs to help you isolate problems. For more
information, see the section about light path diagnostics in the Installation Guide.
vScalable partitions
Up to four xSeries 455 servers can be connected together, providing asymmetric
multiprocessor system with up to 16 microprocessors, 224 GB memory, and 48
I/O slots.
vSystems-management capabilities
The server comes with aRemote Supervisor Adapter installed in adedicated
connector. This adapter, when used with the system-management software that
comes with the server, enables you to manage the functions of the server locally
and remotely. The Remote Supervisor Adapter also provides system monitoring,
event recording, and dial-out alert capability.
4IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

Active Memory
Active Memory is an IBM feature that improves the reliability of memory through
hot-swap memory, memory mirroring, memory scrubbing, and the Memory
ProteXion feature.
Memory scrubbing and Memory ProteXion
Memory scrubbing tests the memory at regular intervals to detect and report
recoverable memory ECC errors before they can cause server outages.
If the recoverable ECC error rate exceeds the system-defined threshold, the
Memory ProteXion feature replaces the failing bit positions, maintaining reliable
operation. If the recoverable ECC error rate exceeds the threshold again, light path
diagnostics LEDs are lit to indicate the failing DIMM.
You do not have to enable memory mirroring to use memory scrubbing and the
Memory ProteXion feature.
Memory mirroring
Memory mirroring stores data in memory port 1and memory port 2simultaneously.
To support memory mirroring, you must install identical dual inline memory modules
(DIMMs) in memory port 1and memory port 2. For more information, see the
section about installing memory modules in the Option Installation Guide on the IBM
xSeries Documentation CD.
To enable memory mirroring through the Configuration/Setup Utility program, select
Advanced Setup from the main menu, and select Memory Configuration.For
more information about using the Configuration/Setup Utility program, see
Chapter 2, “Configuring the server,” on page 11.
Hot-swap memory
You can replace afailed DIMM while the server is turned on, provided that you
have enabled memory mirroring and that you have installed all DIMMs in the
sequence to support memory mirroring.
If aproblem with aDIMM is detected, light path diagnostics LEDs are lit to indicate
the failing DIMM. When this occurs, identify the defective DIMM, and then remove
and replace the DIMM. For more information, see the information about installing
memory modules in the Option Installation Guide on the IBM xSeries
Documentation CD.
Chapter 1. General information 5

Server controls, LEDs, and power
This section describes the controls and light-emitting diodes (LEDs) on the front and
rear of your server. It also describes how to turn the server on and off.
Front view
The following illustration shows the controls, LEDs, and connectors on the front of
the server.
Note: The illustrations in this document might differ slightly from your hardware.
Power-control
button
Reset button
Power-on LED
Hard disk drive activity LED (green)
Hard disk drive error LED (amber)
USB
connector
System-error LED
(amber)
Information LED
(amber)
SCSI activity LED
(green)
Locator LED
(blue)
Drive eject
button
DVD/CD-RW
eject button
DVD/CD-RW
drive activity LED
Power-supply
latch
Drive
eject button
Power-on LED: When this LED is lit and not flashing, it indicates that the server is
turned on. When this LED is flashing, it indicates that the server is turned off and
still connected to an ac power source. When this LED is off, it indicates that ac
power is not present.
Note: If this LED is off, it does not mean that there is no electrical power in the
server. The LED might be burned out or the server might have
malfunctioned. To remove all electrical power from the server, you must
disconnect the power cords from the electrical outlets.
Hard disk drive activity LED: When this LED is lit, it indicates that the hard disk
drive is in use.
Hard disk drive error LED: On some server models, each hot-swap hard disk
drive has an error LED. The interpretation of aflashing error LED depends on the
SCSI controller connected to the hot-swap drive. When the drive is connected to
the integrated SCSI controller with RAID capabilities, aflashing error LED indicates
that the drive is asecondary drive in amirrored pair and the drive is being
synchronized.
USB connector: Connect aUSB device to this connector.
System-error LED: When this LED is lit, it indicates asystem error has occurred.
Information LED: When this LED is lit, it indicates that information about asystem
error has been entered in the System Error log.
6IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

SCSI activity LED: When this LED is lit, it indicates that there is activity on the
SCSI bus.
Locator LED: Use this LED to visually locate the server if it is in alocation with
numerous other servers.
In multi-node configurations, when this LED flashes during startup, it indicates that
the server is the primary node. When this LED is lit during startup, it indicates that
the server is asecondary node.
Drive eject button: Press this button to release the drive from the server.
DVD/CD-RW eject button: Press this button to release aDVD or CD from the
drive.
DVD/CD-RW drive activity LED: When this LED is lit, it indicates that the
DVD/CD-RW drive is in use.
Drive eject button: Press this button to release adrive from the server.
Power-supply latch: This latch secures the power supply in place.
Reset button: Press this button to reset the server and run the power-on self-test
(POST). You might have to use apen or the end of astraightened paper clip to
press the button.
Power-control button: Press this button to turn the server on and off manually. A
power-control-button shield comes with your server. You can install this disk-shaped
shield to prevent the server from being turned off accidentally.
Rear view
The following illustration shows the connectors and LEDs on the rear of the server.
System power
connector (1)
System power
connector (2)
RXE Expansion Port (B)
connector
Remote
Supervisor
Adapter
connectors
and LEDs
Ethernet
LEDs
Gigabit Ethernet
connectors
RXE Expansion
Port (A) connector
Video connector
USB 2 connector
USB 1 connector
RXE Management Port connector
SCSI connector
Serial connector
SMP Expansion Port 1 connector
SMP Expansion Port 2 connector
SMP Expansion Port 3 connector
System power connectors (1 and 2): Connect the power cords to these two
connectors to provide power to the server.
Chapter 1. General information 7

RXE Expansion Port (B) connector: Connect aremote I/O enclosure to this
connector.
Serial connector: Connect the signal cable for amodem or other serial device to
this connector.
Remote Supervisor Adapter connectors and LEDs: This group of connectors
and LEDs on the back of the server are used for system management information
and control.
External power
supply connector
Error LED
(amber)
Power LED
(green)
Ethernet link LED
(green)
Ethernet activity LED
(green)
Ethernet
connector
System-management
connector
RS-485 connector
(RJ14)
vExternal power supply connector: This connector is not supported on this
server.
vError LED: When this amber LED is lit, it indicates an error on the Remote
Supervisor Adapter.
vASM RS-485 connector (RJ-14): Connect signal cables for managing expansion
module resources to this connector.
vEthernet activity LED: When this green LED flashes, it indicates that there is
activity on the Ethernet LAN.
vEthernet link LED: When this green LED is lit, it indicates that there is an active
link connection.
vEthernet connection: Connect Ethernet signal cables to this connector.
vSystem-management connector: Connect signal cables for modems or other
serial devices to this connector.
vPower LED: This LED indicates the status of the power connection.
Ethernet LEDs: When these LEDs are amber, they indicate that there is activity on
the Ethernet LAN. When these LEDs are green, they indicate that there is an active
link connection on the Gigabit Ethernet controller.
Gigabit Ethernet connectors: Use these connectors to connect the server to a
network.
RXE Expansion Port (A) connector: Connect aremote I/O enclosure to this
connector.
Video connector: Connect amonitor to this connector.
USB 2connector: Connect aUSB device to this connector.
USB 1connector: Connect aUSB device to this connector.
8IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide

RXE Management Port connector: Connect aremote I/O enclosure to this
connector.
SCSI connector: Connect aSCSI device to this connector.
SMP Expansion Port 3connector: Use this connector to connect the server to
other servers and form multi-node configurations.
SMP Expansion Port 2connector: Use this connector to connect the server to
other servers and form multi-node configurations.
SMP Expansion Port 1connector: Use this connector to connect the server to
other servers and form multi-node configurations.
Server power features
When the server is connected to an ac power source but is not turned on, the
operating system does not run, and all core logic except for the service processor is
shut down; however, the server can respond to requests from the service processor,
such as aremote request to turn on the server. The power-on LED flashes to
indicate that the server is connected to ac power but is not turned on.
Turning on the server
Approximately 20 seconds after the server is connected to ac power, the
power-control button becomes active, and you can turn on the server and start the
operating system by pressing the power-control button. The server can also be
turned on in any of the following ways:
vIf apower failure occurs while the server is turned on, the server will restart
automatically when power is restored.
vIf ac power is present, the server can be turned on from the Remote Supervisor
Adapter user interface.
vThe Wake on LAN feature can turn on the server.
Notes:
1. The power supplies are hot-swappable and redundant only at 200-240 Vac.
2. Both power supplies must be connected to the power source for operation at
100-127 Vac.
3. During normal operation, both power supplies must be installed for proper
operation.
4. While the server is powering up, the power-on LED on the front of the server is
lit. When the server is connected to ac power but is not turned on, the power-on
LED on the front of the server flashes.
5. When you press the power-control button on any server in ascalable partition,
all servers in the scalable partition will be turned on. If the servers do not turn
on when the power-control button is pressed, see “Error symptoms” on page
196.
Turning off the server
When you turn off the server and leave it connected to ac power, the server can
respond to requests from the service processor, such as aremote request to turn
on the server. To remove all power from the server, you must disconnect it from the
power source.
Chapter 1. General information 9

Some operating systems require an orderly shutdown before you turn off the server.
See your operating-system documentation for information about shutting down the
operating system.
Statement 5:
CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current
from the device, ensure that all power cords are disconnected from the power
source.
1
2
The server can be turned off in any of the following ways:
vYou can turn off the server from the operating system, if your operating system
supports this feature. After an orderly shutdown of the operating system, the
server will be turned off automatically.
vYou can press the power-control button to start an orderly shutdown of the
operating system and turn off the server, if your operating system supports this
feature.
vIf the operating system stops functioning, you can press and hold the
power-control button for more than 4seconds to turn off the server.
vIf the server is connected to an Advanced System Management interconnect
network, the server can be turned off using the Remote Supervisor Adapter user
interface.
Notes:
1. You might need to press and hold the power-control button for more than 4
seconds to cause an immediate shutdown of the server. You can use this
feature if the operating system stops functioning.
2. If you disconnect the server from the power source, wait approximately 15
seconds for the server to stop running before you open the cover. Watch for the
power-on LED on the front of the server to stop flashing.
3. When you press the power-control button on any server in ascalable partition,
all servers in the scalable partition will be turned off. If the servers do not turn
off when the power-control button is pressed, see “Error symptoms” on page
196.
10 IBM xSeries 455 Type 8855: Hardware Maintenance Manual and Troubleshooting Guide