IBM B50 User Manual 2
RS/6000 7046 Model B50 IBM
Service Guide
SA38-0564-00
RS/6000 7046 Model B50 IBM
Service Guide
SA38-0564-00
First Edition (September 1999)
The following paragraph does not apply to the United Kingdom or any country where
such provisions are inconsistent with local law: THIS PUBLICATION IS PROVIDED “AS
IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied
warranties in certain transactions, therefore, this statement may not apply to you.
This publication 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. The manufacturer may make improvements and/or changes in the
product(s) and/or the program(s) described in this publication at any time, without notice.
It is possible that this publication may contain reference to, or information about, products
(machines and programs), programming, or services that are not announced in your country.
Such references or information must not be construed to mean that these products,
programming, or services will be announced in your country. Any reference to a specific
licensed program in this publication is not intended to state or imply that you can use only that
licensed program. You can use any functionally equivalent program instead.
Requests for technical information about products should be made to your authorized reseller
or marketing representative.
International Business Machines Corporation 1999. All rights reserved.
Note to U.S. Government Users -- Documentation related to restricted rights -- Use,
duplication or disclosure is subject to restrictions set forth is GSA ADP Schedule Contract with
IBM Corp.
Contents
Communications Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Federal Communications Commission (FCC) Statement ............... vii
European Union (EU) Statement ............................. vii
International Electrotechnical Commission (IEC) Statement ............. viii
United Kingdom Telecommunications Safety Requirements ............. viii
Avis de conformité aux normes du ministère des Communications du Canada . viii
Canadian Department of Communications Compliance Statement ......... viii
VCCI Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Electromagnetic Interference (EMI) Statement - Taiwan ................ ix
Radio Protection for Germany ............................... x
Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Laser Safety Information .................................. xii
Environmental Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Product Recycling and Disposal ............................. xiii
Environmental Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
About This Book ...................................... xv
ISO 9000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Online Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Chapter 1. Reference Information . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
System Board Locations ................................. 1-6
System Board Jumper Settings ............................. 1-8
Riser Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
SCSI Bus Termination .................................. 1-9
Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Service Inspection Guide ................................ 1-10
Chapter 2. Maintenance Analysis Procedures (MAPs) ............. 2-1
Entry MAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
MAP 1020: Problem Determination ........................... 2-6
MAP 1240: Memory Problem Resolution ........................ 2-9
MAP 1520: Power .................................... 2-12
MAP 1540: Minimum Configuration .......................... 2-17
Chapter 3. Error Code to FRU Index ........................ 3-1
Preface iii
Bus SRN to FRU Reference Table .......................... 3-12
Firmware Checkpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Boot Problems or Concerns .............................. 3-27
Chapter 4. Location Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Physical Location Codes ................................. 4-1
AIX Location Codes .................................... 4-3
Chapter 5. Loading the System Diagnostics ................... 5-1
Loading Diagnostics in Service Mode Boot ...................... 5-2
Working with Standalone versus Online Diagnostics ................. 5-3
Chapter 6. Using System Management Services ................. 6-1
Graphical System Management Services ....................... 6-1
Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
MultiBoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Hard Disk Spin Up Delay ................................ 6-15
Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
RIPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
SCSI ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Firmware Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Text-Based System Management Services ..................... 6-23
Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
MultiBoot Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25
Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29
Select Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39
Open Firmware Command Line ............................ 6-40
Chapter 7. Removal and Replacement Procedures ............... 7-1
Handling Static–Sensitive Devices ........................... 7-2
Removing the Cover ................................... 7-3
DASD 2-Pack Assembly ................................. 7-6
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Riser Card Support Bracket .............................. 7-10
Riser Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Fansink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Setting the SCSI Security Jumpers .......................... 7-16
Front Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Reset Button and Operator Panel Display Assembly ................ 7-19
iv 7046 Model B50 Service Guide
Activity LED and Cable Assemblies .......................... 7-20
I/O Port Cable Assembly ................................ 7-21
Diskette Drive Assembly ................................ 7-22
CD-ROM Drive Assembly ............................... 7-23
Internal Disk Drives ................................... 7-24
Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25
Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
Changing the Battery .................................. 7-31
Chapter 8. Parts Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Appendix A. Interpreting Firmware Error Codes ................. A-1
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1
Reader's Comments — We'd Like to Hear From You ............... X-3
Preface v
vi 7046 Model B50 Service Guide
Communications Statements
The following statement applies to this product. The statement for other products
intended for use with this product appears in their accompanying documentation.
Federal Communications Commission (FCC) Statement
Note: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
Properly shielded and grounded cables and connectors must be used in order to
meet FCC emission limits. Neither the provider nor the manufacturer are responsible
for any radio or television interference caused by using other than recommended
cables and connectors or by unauthorized changes or modifications to this
equipment. Unauthorized changes or modifications could void the user's authority to
operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
European Union (EU) Statement
This product is in conformity with the protection requirements of EU Council Directive
89/336/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility. The manufacturer cannot accept responsibility for any
failure to satisfy the protection requirements resulting from a non-recommended
modification of the product, including the fitting of option cards supplied by third
parties. Consult with your dealer or sales representative for details on your specific
hardware.
This product has been tested and found to comply with the limits for Class A
Information Technology Equipment according to CISPR 22 / European Standard EN
55022. The limits for Class A equipment were derived for commercial and industrial
Communications vii
environments to provide reasonable protection against interference with licensed
communication equipment.
Attention: This is a Class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to take adequate
measures.
International Electrotechnical Commission (IEC) Statement
This product has been designed and built to comply with IEC Standard 950.
United Kingdom Telecommunications Safety Requirements
This equipment is manufactured to the International Safety Standard EN60950 and
as such is approved in the UK under the General Approval Number
NS/G/1234/J/100003 for indirect connection to the public telecommunication network.
The network adapter interfaces housed within this equipment are approved
separately, each one having its own independent approval number. These interface
adapters, supplied by the manufacturer, do not use or contain excessive voltages.
An excessive voltage is one which exceeds 70.7 V peak ac or 120 V dc. They
interface with this equipment using Safe Extra Low Voltages only. In order to
maintain the separate (independent) approval of the manufacturer's adapters, it is
essential that other optional cards, not supplied by the manufacturer, do not use
main voltages or any other excessive voltages. Seek advice from a competent
engineer before installing other adapters not supplied by the manufacturer.
Avis de conformité aux normes du ministère des Communications du Canada
Cet appareil numérique de la classe A respecte toutes les exigences du Réglement
sur le matériel brouilleur du Canada.
Canadian Department of Communications Compliance Statement
This Class A digital apparatus meets the requirements of the Canadian
Interference–Causing Equipment Regulations.
viii 7046 Model B50 Service Guide
VCCI Statement
The following is a summary of the VCCI Japanese statement in the box above.
This is a Class A product based on the standard of the Voluntary Control Council for
Interference by Information Technology Equipment (VCCI). If this equipment is used
in a domestic environment, radio disturbance may arise. When such trouble occurs,
the user may be required to take corrective actions.
Electromagnetic Interference (EMI) Statement - Taiwan
The following is a summary of the EMI Taiwan statement above.
Warning: This is a Class A product. In a domestic environment this product may
cause radio interference in which case the user will be required to take adequate
measures.
Communications ix
Radio Protection for Germany
Dieses Gerät ist berechtigt in Übereinstimmung mit Dem deutschen EMVG vom
9.Nov.92 das EG–Konformitätszeichen zu führen.
Der Aussteller der Konformitätserklärung ist die IBM Germany.
Dieses Gerät erfüllt die Bedingungen der EN 55022 Klasse A. Für diese von
Geräten gilt folgende Bestimmung nach dem EMVG:
Geräte dürfen an Orten, für die sie nicht ausreichend entstört sind, nur mit
besonderer Genehmigung des Bundesministers für Post und Telekommunikation
oder des Bundesamtes für Post und Telekommunikation betrieben werden. Die
Genehmigung wird erteilt, wenn keine elektromagnetischen Störungen zu erwarten
sind.
(Auszug aus dem EMVG vom 9.Nov.92, Para.3, Abs.4)
Hinweis
Dieses Genehmigungsverfahren ist von der Deutschen Bundespost noch nicht
veröffentlicht worden.
x 7046 Model B50 Service Guide
Safety Notices
A danger notice indicates the presence of a hazard that has the potential of causing
death or serious personal injury. Danger notices appear on the following pages:
2-12
7-1
7-7
A caution notice indicates the presence of a hazard that has the potential of causing
moderate or minor personal injury. Caution notices appear on the following pages:
xii
2-12
7-1
7-31
Safety Notices xi
Laser Safety Information
The optical drive in the RS/6000 7046 Model B50 is a laser product. The optical
drive has a label that identifies its classification. The label, located on the drive, is
shown below.
CLASS 1 LASER PRODUCT
LASER KLASSE 1
LUOKAN 1 LASERLAITE
APPAREIL A LASER DECLASSE 1
IEC 825:1984 CENELEC EN 60 825:1991
The optical drive in the RS/6000 7046 Model B50 is certified in the U.S. to conform
to the requirements of the Department of Health and Human Services 21 Code of
Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products.
Elsewhere, the drive is certified to conform to the requirements of the International
Electrotechnical Commission (IEC) 825 (1st edition 1984) and CENELEC EN 60
825:1991 for Class 1 laser products.
CAUTION:
A class 3 laser is contained in the device. Do not attempt to operate the drive
while it is disassembled. Do not attempt to open the covers of the drive as it
is not serviceable and is to be replaced as a unit.
Class 1 laser products are not considered to be hazardous. The optical drive
contains internally a Class 3B gallium-arsenide laser that is nominally 0.14 milliwatts
at 830 nanometers. The design incorporates a combination of enclosures,
electronics, and redundant interlocks such that there is no exposure to laser radiation
above a Class 1 level during normal operation, user maintenance, or servicing
conditions.
xii 7046 Model B50 Service Guide
Environmental Notices
Product Recycling and Disposal
This unit contains materials such as circuit boards and connectors with lead that
require special handling and disposal at end of life. Before this unit is disposed of,
these materials must be removed and recycled or discarded according to applicable
regulations. This manual contains specific information on batteries where applicable.
This product may contain nickel-cadmium and/or lithium batteries. The battery(s)
must be recycled or disposed of properly. Recycling facilities may not be available in
your area. In the United States, IBM has established a collection process for reuse,
recycling, or proper disposal of used sealed lead acid, nickel cadmium and nickel
metal hydride batteries and battery packs from IBM equipment. For information on
proper disposal of the nickel cadmium batteries in this product, please contact IBM at
1-800-426-4333. For information on battery disposal outside the United States,
contact your local waste disposal facility.
Environmental Design
The environmental efforts that have gone into the design of this system signify IBM's
commitment to improve the quality of its products and processes. Some of these
accomplishments include the elimination of the use of Class I ozone-depleting
chemicals in the manufacturing process and reductions in manufacturing wastes.
For more information, contact an IBM account representative.
Environmental Notices xiii
xiv 7046 Model B50 Service Guide
About This Book
This book provides reference information, maintenance analysis procedures (MAPs),
error codes, and removal and replacement procedures. This book also provides
information on diagnostics, System Management Services, and firmware flow. A
parts catalog is also included.
Note: MAPs that are common to all systems are contained in Diagnostics
Information for Multiple Bus Systems, order number SA38-0509.
This book is used by the service technician to repair system failures. This book
assumes that the service technician has had training on the server.
ISO 9000
ISO 9000 registered quality systems were used in the development and
manufacturing of this product.
Online Publications
RS/6000 publications are available online. To access the online books, visit our Web
site at: http://www.rs6.ibm.com/resource/hardware_docs/
Related Publications
The following publications are available for purchase:
Diagnostics Information for Multiple Bus Systems, order number SA38-0509,
contains common diagnostic procedures, error codes, service request numbers,
and failing function codes. This manual is intended for trained service
technicians.
Adapters, Devices, and Cable Information for Multiple Bus Systems, order
number SA38-0516, contains information about adapters, external devices, and
cabling. This manual is intended to supplement information found in the
Diagnostics Information for Multiple Bus Systems.
RS/6000 7046 Model B50 Setup Guide, order number SA38-0562, is a pictorial
guide designed to help system users set up their systems.
RS/6000 7046 Model B50 User's Guide, order number SA38-0563, provides
information about installing options, system operation, and running diagnostics.
About This Book xv
Trademarks
The following trademarks apply to this information:
AIX is a registered trademark of International Business Machines Corporation.
PowerPC is a trademark of International Business Machines Corporation.
xvi 7046 Model B50 Service Guide
Chapter 1. Reference Information
Front View
12
10 9 8 611
13
1 Power Switch: Turns server power
on and off.
2 Hard Disk Drive Status Light:
Glows when server is reading from or
writing to the hard disk.
3 Power-On Light: Glows when
server is on.
4 Disk Drive Bay Cover: Covers the
hard disk drive bays.
5 Reset Button: Function depends
upon the operating system installed.
6 Operator Panel Display: Function
depends upon the operating system
installed; may display current status of
server startup, or diagnostic information
in the event of a hardware problem.
1
2
3
75
7 CD-ROM Eject Button: Releases
the CD-ROM from the CD-ROM drive.
8 CD-ROM Emergency Eject: Ejects
CD-ROM from the CD-ROM drive if
power is not available.
9 CD-ROM Status Light: Indicates
when the CD-ROM drive is active.
10 CD-ROM Volume Control:
Controls the volume for the CD-ROM
headphone jack.
11 CD-ROM Headphone Jack:
CD-ROM Headphone connector.
12 Diskette-Drive Status Light:
Glows when server is reading from or
writing to a diskette.
13 Diskette Eject Button: Releases
diskette from 3.5-inch diskette drive.
4
Chapter 1. Reference Information 1-1
Rear View
789
1 2
2
1
1 2
10
6
1 Keyboard Port: ( ): For
keyboard connection.
2 Mouse Port ( ): For mouse
connection.
3 Parallel Port ( ): For connecting
a parallel printer or other parallel
devices.
4 Ethernet Port ( ): For attaching
your server to an Ethernet/Twisted pair
connection through a 100/10 Base T
connector.
5 External SCSI Port ( ):
For connecting external SCSI devices.
6 Audio Ports:
5
4
3
1
2
Headphone
Microphone
Audio line out
Audio line in
7 9-Pin Serial Ports
( 1 and
): For a TTY terminal,
2
Modem, or other serial devices.
8 Tablet Port ( ): For attaching a
digitizing tablet to your server.
9 Ethernet Port ( ): For attaching
your server to an Ethernet thick
connection (or Ethernet thin connection,
using an optional transceiver) through a
100/10 Base 5 connector.
10 Expansion Slots: For adding PCI
adapters.
1-2 7046 Model B50 Service Guide
Front View without Covers
Chapter 1. Reference Information 1-3
Specifications
The mechanical packaging, cooling, power supply, and environmental requirements
for the workstation are as follows:
Dimensions
In horizontal orientation, the dimensions are:
Height - 88.0 mm (3.5 inches)
Width - 447.0 mm (17.6 inches)
Depth - 612.0 mm (24.1 inches) Minimum
Depth - 751.8 mm (29.6 inches) Maximum (includes covers and cables)
Weight
14.5 kg (32 lb) Minimum to 15.9 kg (35 lb) Maximum
Maximum Support Capacity (Horizontal Position)
27.3 kg (60 lbs)
Operating Environment - Class C
Temperature - 10° to 40°C (50° to 104°F)
1
Humidity - 8% to 80% noncondensing
Wet Bulb - 27 degrees C (80 degrees F) operating and nonoperating
2
Maximum Altitude - 2135 m (7000 feet)
Power Source Loading
0.3k VA typical
0.5k VA maximum
1
The upper limit of the dry bulb temperature must be derated 1° C per 137m (450 ft.) above 915m (3000
ft.).
2
The upper limit of the wet bulb temperature must be derated 1° C per 274m (900 ft.) above 305m (1000
ft.).
1-4 7046 Model B50 Service Guide
Power Supply
250 watts
Operating Voltage
100 to 127V ac; 50 to 60 Hz
200 to 240V ac; 50 to 60 Hz
Heat Output (Maximum)
Operating 478 BTUs per hour
Acoustics
Average sound-pressure levels:
– At operator position:
Operating n/a
Idle n/a
– At bystander position (1 meter)
Operating 35 dBA
Idle 30 dBA
Declared (upper limit) sound power levels:
Operating 5.2 Bels
Idle 4.7 Bels
Chapter 1. Reference Information 1-5
System Board Locations
J59 J56 J49 J45 J38 J22 J17 J13 J3
J31
J14
J29
J139
J50
J20
J19
J53
J28
J11
J43
J40
J39
J15
J32
J35
J1
J33
J25
B1
J36
J23
J24
J16
J4
J6
J5
J7
J8
J2
J9
J10
J44
J41J26
J42
J46J12
J18J27J30
1-6 7046 Model B50 Service Guide
B1 Battery connector
J26 CPU fansink connector
J1 Not used
J2 5x5 Auxiliary 5v connector
J3 Audio input connector
J4 Internal SCSI connector #2
J5 CD-ROM audio connector
J6 CD-ROM audio connector
J7 Power connector
J8 Power connector
J9 Not used
J10 Media Fan connector
J11 Memory Connector 1
J12 Not used
J13 Audio output connector
J14 Not used
J15 Remote Power-up Jumper
J16 Diskette drive connector
J17 Microphone jack
J18 Reset Connector
J19 Memory Connector 3
J20 Power-on password jumper
J22 Headphone jack
J23 Serial port connector 2
J24 Serial port connector 1
J25 Tablet port connector
J27 System fan connector
J28 Memory Connector 2
J29 Not used
J30 System fan connector
J31 Not used
J32 Privileged-access password
jumper
J33 Internal SCSI 16-bit connector
J35 SCSI security jumper
J36 SCSI security jumper
J38 External SCSI connector
J39 Riser card connector
J40 Power Switch connector
J41 Op Panel Connector
J42 Power Indicator LED connector
J43 Hard-disk activity LED connector
J44 Voltage Regulator connector
J45 Ethernet twisted pair connector
J46 Internal Speaker connector
J49 Parallel port connector
J50 Ethernet AUI
J53 Ethernet EPROM connector
J56 Mouse port connector
J59 Keyboard port connector
J139 Memory Connector 4
Chapter 1. Reference Information 1-7
System Board Jumper Settings
For a more complete description of the function of these jumpers, see "Installing and
Removing Options" in the RS/6000 7046 Model B50 User's Guide.
Jumper Description Settings
J15 Remote Power-up Default: Remote power-up disabled.
To enable Remote power-up, place
jumper on the two pins closest to the
rear of the server.
J20 Power-On Password Default: power-on password enabled
(can be set).
To disable the power-on password
(for instance, if it has been forgotten),
place jumper on the two rightmost
pins.
J32 Privileged-Access Password Default: disabled.
To enable the writing or changing of
the privileged-access password, place
jumper on the two pins closest to the
rear of the server.
J35, J36 SCSI Security Default: external SCSI enabled
To disable external SCSI connector,
move the jumper on J35 to the front
two pins, and the jumper on J36 to
the right two pins.
1-8 7046 Model B50 Service Guide
Riser Card
2
1
Slot Location Code/Comments
2 10-90 PCI Primary
1 10-B0 PCI Secondary, short card only
SCSI Bus Termination
The Model B50 has an Ultra SCSI bus which can support internal and external SCSI
devices. However, each controller on these SCSI busses must have a unique SCSI
ID. The external SCSI busses must be properly terminated to ensure SCSI signal
integrity.
For directions on setting the SCSI ID on each device, consult the documentation for
that device, as well as the Adapters, Devices, and Cable Information for Multiple Bus
Systems.
Note: Internal SCSI IDs cannot be used on the external SCSI connector (J38). The
internal SCSI IDs are as follows:
SCSI ID Internal Device
2 Upper Hard-Disk Drive
3 CD-ROM Drive
4 Lower Hard-Disk Drive
Chapter 1. Reference Information 1-9
Power Cables
To avoid electrical shock, a power cable with a grounded attachment plug is
provided. Use only properly grounded outlets.
Power cables used in the United States and Canada are listed by Underwriter's
Laboratories (UL) and certified by the Canadian Standards Association (CSA).
These power cords consist of:
Electrical cables, Type SVT or SJT.
Attachment plugs complying with National Electrical Manufacturers Association
(NEMA) 5-15P, that is:
"For 115 V operation, use a UL listed cable set consisting of a minimum 18 AWG,
Type SVT or SJT three-conductor cord a maximum of 15 feet in length and a parallel
blade, grounding type attachment plug rated at 15 A, 127 V."
"For 240 V operation in the United States use a UL listed cable set consisting of a
minimum 18 AWG, Type SVT or SJT three-conductor cable a maximum of 15 feet in
length, and a tandem blade, grounding type attachment plug rated at 15 A, 250 V."
Appliance couplers complying with International Electrotechnical Commission
(IEC) Standard 320, Sheet C13.
Power cables used in other countries consist of the following:
Electrical cables, Type HD21.
Attachment plugs approved by the appropriate testing organization for the
specific countries where they are used.
"For units set at 230 V (outside of U.S.): use a cable set consisting of a minimum 18
AWG cable and grounding type attachment plug rated 15 A, 250 V. The cable set
should have the appropriate safety approvals for the country in which the equipment
will be installed and should be marked HAR."
Refer to Chapter 8, “Parts Information” on page 8-1 to find the power cables that are
available.
Service Inspection Guide
Perform a service inspection on the server when:
The server is inspected for a maintenance agreement.
Service is requested and service has not recently been performed.
An alterations and attachments review is performed.
1-10 7046 Model B50 Service Guide
Changes have been made to the equipment that may affect the safe operation of
the equipment.
External devices with separate power supplies have been attached.
If the inspection indicates an unacceptable safety condition, the condition must be
corrected before anyone can service the machine.
Note: The owner of the server is responsible to correct any unsafe conditions.
Perform the following checks:
1. Check the covers for sharp edges and for damage or alterations that expose the
internal parts of the server.
2. Check the covers for proper fit to the server. They should be in place and
secure.
3. Gently rock the server from side to side to determine if it is steady.
4. Set the power switch of the server to Off.
5. Disconnect the power cable.
6. Remove the covers.
7. Check for alterations or attachments. If there are any, check for obvious safety
hazards, such as broken wires, sharp edges, or broken insulation.
8. Check the internal cables for damage.
9. Check for dirt, water, and any other contamination within the server.
10. Check the external power cable for damage.
11. With the external power cable connected to the server, check for 0.1 ohm or less
resistance between the ground lug on the external power cable plug and the
metal frame.
12. Perform the following checks on each device that has its own power cables:
a. Check for damage to the power cord.
b. Check for the correct grounded power cable.
c. With the external power cable connected to the device, check for 0.1 ohm or
less resistance between the ground lug on the external power cable plug and
the metal frame of the device.
13. Install the covers.
Chapter 1. Reference Information 1-11
1-12 7046 Model B50 Service Guide
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