MG1450 007 4276 001
User Manual: 007-4276-001
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- Record of Revision
- Figures
- Tables
- Detailed Chassis Description
- Removing and Installing System Components
- Removing and Installing Baseboard Components
- Solving Problems
- Resetting the System
- Initial System Startup
- New Application Software
- After the System Has Been Running Correctly
- Specific Problems and Corrective Actions
- Power Light Does Not Light
- No Beep Codes
- No Characters Appear on Screen
- Characters Are Distorted or Incorrect
- System Cooling Fans Do Not Rotate Properly
- Diskette Drive Activity Light Does Not Light
- Hard Drive Activity Light Does Not Light
- CD-ROM Drive Activity Light Does Not Light
- Problems with Application Software
- Error and Informational Messages
- Equipment Log
- Technical Reference
- Internal Cables and Connectors
- Connectors Accessible to the User
- Peripheral Adapter Boards and Connectors
- Baseboard Connectors
- Power Distribution Board Interface Connectors (J9B1, J9D1, J9B2)
- Front Panel Interface (J9E3)
- Hot-Plug PCI Indicator Board Interface (J3D1)
- Memory Module Interface (J6F1)
- Processor Module Connector (J7A1, J7B1, J7C1, J7D1)
- Processor Termination, Regulation, and Power
- Termination Card
- Server Monitor Module Connector (J7H1)
- SM Bus Connector (J9E4)
- ICMB Connector (J1D2)
- Auxiliary I2C Connector (J9E4)
- Baseboard Fan Connectors (J3C1, J3A1, J4A1, J4C1)
- Internal Disk Drive LED Connection
- Baseboard Jumpers
- Changing Jumper Settings
- Interrupts
- Video Modes
- Physical Environment Specifications
- Index
SGI™1450 Server
Maintenance Guide
Document Number 007-4276-001
Cover design by Sarah Bolles, Sarah Bolles Design, and Dany Galgani, SGI Technical Publications.
© 2000, Silicon Graphics, Inc.— All Rights Reserved
The contents of this document may not be copied or duplicated in any form, in whole or in part, without the prior written permission of Silicon
Graphics, Inc.
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. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications.
LIMITED AND RESTRICTED RIGHTS LEGEND
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in the Rights in Data clause at FAR 52.227-14 and/or in
similar or successor clauses in the FAR, or in the DOD, DOE, or NASA FAR Supplements. Unpublished rights reserved under the Copyright
Laws of the United States. Contractor/manufacturer is Silicon Graphics, Inc., 1600 Amphitheatre Pkwy., Mountain View, CA 94043-1351.
SiliconGraphicsisaregisteredtrademarkandSGIandtheSGIlogoaretrademarksofSiliconGraphics,Inc.
Adaptec is a registered trademark of Adaptec, Inc. Compaq is a trademark of Compaq Computer Corporation. IBM and OS/2 are registered
trademarks of International Business Machines. Intel, LANDesk, and Pentium are registered trademarks and Server Set and Xeon are trademarks
of Intel Corporation. Linux is a registered trademark of Linus Torvalds. Microsoft, MS-DOS, Windows, and WIndows 2000 are registered
trademarks of Microsoft Corporation. UNIX is a registered trademark in the United States and other countries, licensed exclusively through
X/Open Company, Ltd.
007-4276-001 iii
Record of Revision
Version Description
001 June 2000
Initial Rev
007-4276-001 v
Contents
Figures ..........................xi
Tables ..........................xiii
About This Guide.......................xv
ObtainingPublications.....................xv
ReaderComments.......................xv
1. Detailed Chassis Description ...................1
ChassisFeatures.......................2
Peripherals.........................9
PeripheralBay.......................9
DeviceBay......................9
MediaBay.......................9
HardDriveBay......................10
PowerSubsystem.......................11
SystemCooling .......................14
E-Bay..........................17
ChassisFrontControlsandIndicators.................18
RearPanelI/OPortsandFeatures..................19
2. Removing and Installing System Components ..............21
ToolsandSuppliesNeeded....................22
Pre-InstallationSafetyPrecautions..................22
FrontCover.........................23
RemovingtheFrontCover...................23
InstallingtheFrontCover...................24
TopCover.........................25
RemovingtheTopCover ...................25
InstallingtheTopCover....................25
vi 007-4276-001
Contents
MemoryRetentionBar......................26
RemovingtheMemoryRetentionBar................26
InstallingtheMemoryRetentionBar................27
Baseboard.........................27
RemovingtheBaseboard....................28
InstallingtheBaseboard....................31
PowerSubsystem.......................33
RemovingaPowerSupplyModule.................35
InstallingaPowerSupplyModule.................35
RemovingthePowerSubsystemBay................36
InstallingthePowerSubsystemBay.................37
CoolingSystem........................38
RemovingtheFanBoardAssembly.................39
InstallingtheFanBoardAssembly.................40
ReplacingtheFanBoard....................40
Removing and Installing Individual Fans ...............42
HardDriveBay........................42
RemovingtheHardDriveBay..................43
InstallingtheHardDriveBay..................44
PeripheralDevices.......................45
RemovingaDrivefromtheMediaBay................45
InstallingaDriveintheMediaBay.................46
ReplacingaDriveintheDeviceBay.................46
SCSIRequirements.......................47
3. Removing and Installing Baseboard Components .............49
ToolsandSuppliesNeeded....................50
Pre-InstallationSafetyPrecautions..................50
BaseboardConnectorandComponentLocations..............52
Memory..........................53
RemovingtheMemoryModule..................55
InstallingtheMemoryModule..................55
RemovingDIMMs......................56
InstallingDIMMs......................56
Contents
007-4276-001 vii
Processors.........................57
RemovingaProcessor....................59
InstallingaProcessor.....................59
RemovingProcessorRetentionMechanisms..............59
InstallingProcessorRetentionMechanisms..............60
InstallingProcessorHandles ..................60
InstallingProcessorHeatsinks..................60
VoltageRegulatorModules(VRMs)..................61
RemovingaVRM......................62
InstallingaVRM......................62
BackupBattery........................63
Add-inBoards........................65
Removinga32-bit,33-MHzHalf-LengthPCIAdd-inBoard .........65
Installinga32-bit,33-MHzHalf-LengthPCIAdd-inBoard..........66
Removinga64-bit,66/33-MHzHot-PlugPCIAdd-inBoard.........67
Installinga64-bit,66/33-MHzHot-PlugPCIAdd-inBoard..........69
ICMBCard.........................70
InstallinganICMBCard....................71
RemovinganICMBCard ...................73
4. Solving Problems .......................75
ResettingtheSystem......................75
InitialSystemStartup......................75
NewApplicationSoftware....................76
AftertheSystemHasBeenRunningCorrectly...............77
viii 007-4276-001
Contents
SpecificProblemsandCorrectiveActions................77
PowerLightDoesNotLight...................78
NoBeepCodes.......................78
NoCharactersAppearonScreen .................79
CharactersAreDistortedorIncorrect................79
SystemCoolingFansDoNotRotateProperly..............80
DisketteDriveActivityLightDoesNotLight..............80
HardDriveActivityLightDoesNotLight...............81
CD-ROMDriveActivityLightDoesNotLight .............81
ProblemswithApplicationSoftware................81
ErrorandInformationalMessages..................82
EquipmentLog........................84
A. Technical Reference ......................87
InternalCablesandConnectors...................87
ConnectorsAccessibletotheUser..................90
KeyboardandMousePorts...................90
SerialPorts........................90
ParallelPort .......................91
VideoPort........................92
UniversalSerialBus(USB)Interface.................93
ICMBConnectors......................94
EthernetConnector.....................94
InternalSCA-2HDDConnector..................95
ExternalAdaptecUltra160/mSCSI.................97
ACPowerInput......................99
PeripheralAdapterBoardsandConnectors...............100
CD-ROMConnectors....................100
FloppyConnectors ....................103
Contents
007-4276-001 ix
BaseboardConnectors .....................105
PowerDistributionBoardInterfaceConnectors(J9B1,J9D1,J9B2)........107
FrontPanelInterface(J9E3)...................111
Hot-PlugPCIIndicatorBoardInterface(J3D1).............113
MemoryModuleInterface(J6F1).................115
ProcessorModuleConnector(J7A1,J7B1,J7C1,J7D1)...........119
ProcessorTermination,Regulation,andPower.............123
TerminationCard......................125
ServerMonitorModuleConnector(J7H1)...............125
SMBusConnector(J9E4)....................127
ICMBConnector(J1D2)....................127
Auxiliary I2CConnector(J9E4)..................128
BaseboardFanConnectors(J3C1,J3A1,J4A1,J4C1)............128
InternalDiskDriveLEDConnection................130
BaseboardJumpers......................131
ChangingJumperSettings....................133
CMOSClearJumper.....................133
PasswordClearJumper....................135
RecoveryBootJumper....................136
Interrupts.........................137
VideoModes........................138
B. Physical Environment Specifications .................141
Index ..........................143
007-4276-001 xi
Figures
Figure 1-1 ServerinRack-MountableConfiguration........3
Figure 1-2 FrontCoverRetainingScrews ...........4
Figure 1-3 TopCoverThumbscrew.............5
Figure 1-4 (Left) Server without Covers. (Right) Overhead View of E-Bay . . 6
Figure 1-5 HardDriveinDriveCarrier............10
Figure 1-6 PowerSubsystem...............12
Figure 1-7 FanBoardAssembly..............15
Figure 1-8 FanLEDs .................16
Figure 1-9 FrontPanelControlsandIndicators..........18
Figure 1-10 RearPanelI/OPortsandFeatures..........19
Figure 2-1 MemoryRetentionBar..............27
Figure 2-2 PowerSupplyACBracket.............29
Figure 2-3 E-BayRetainingScrews.............30
Figure 2-4 RearRetentionMechanism............31
Figure 2-5 PowerSubsystem...............34
Figure 2-6 MetalPlateCoveringthePowerSubsystemBay......38
Figure 2-7 FanBoardAssemblyScrew............39
Figure 2-8 FanAssemblyRotatedawayFromItsBase........41
Figure 2-9 HardDriveBayTabs..............43
Figure 2-10 RemovingtheHardDriveBayfromtheChassis......44
Figure 2-11 LocationoftheMediaBayScrew...........45
Figure 3-1 BaseboardConnectorandComponentLocations......52
Figure 3-2 MemoryModuleDIMMInstallationSequence.......54
Figure 3-3 DIMMOrientationinaMemoryModule........57
Figure 3-4 ProcessorOrientationandComponents.........58
Figure 3-5 InstallingaVRM...............63
Figure 3-6 FrontHot-PlugRetentionMechanism.........68
xii 007-4276-001
Figures
Figure 3-7 ICMBCard.................71
Figure 3-8 ExampleofanICMBCardAttachedtoaChassis......72
Figure 3-9 InternalCableAttachedtotheICMBCard........72
Figure 3-10 ExternalCableAttachedtotheCard..........73
Figure A-1 DetailedDiagramofConnectorLocations.......105
Figure A-2 BaseboardConfigurationJumpers .........131
007-4276-001 xiii
Tables
Table 1-1 SGI1450ServerPhysicalSpecifications.........2
Table 1-2 ChassisFeatureSummary.............7
Table 1-3 HardDriveLEDStateStatus............11
Table 1-4 ACPowerLEDStateStatus............14
Table 1-5 FanLEDStateStatus..............16
Table 3-1 VRM/ProcessorPowerSequencing..........61
Table 3-2 Processor/VRMPopulationSequencing ........61
Table 4-1 ResettingCommands..............75
Table 4-2 StandardBIOSPort-80Codes............82
Table 4-3 RecoveryBIOSPort-80Codes............83
Table 4-4 EquipmentLog................84
Table A-1 SGI1450serverCablesandConnectors.........87
Table A-2 KeyboardandMouseConnectors..........90
Table A-3 SerialPorts.................91
Table A-4 ParallelPort.................91
Table A-5 VideoPort.................92
Table A-6 USBConnector................93
Table A-7 ICMBConnectors...............94
Table A-8 EthernetConnector...............94
Table A-9 InternalSCA-2HDDConnector...........95
Table A-10 ExternalAdaptecUltra160/mSCSI..........97
Table A-11 CD-ROMAdapterBoard40PositionIDEConnector.....100
Table A-12 CD-ROMAdapterBoardPowerConnector........101
Table A-13 AudioConnector...............101
Table A-14 CD-ROMJAEConnector.............101
Table A-15 34-PositionFloppyConnectorPin-Out.........103
Table A-16 FloppyAdapterBoardPowerConnector........104
xiv 007-4276-001
Tables
Table A-17 FFCconnector...............104
Table A-18 ConnectorDescription.............106
Table A-19 MainPowerConnectorA(J9B1)..........108
Table A-20 MainPowerConnectorB(J9D1)..........109
Table A-21 AuxiliaryPowerConnector(J9B2) .........110
Table A-22 FrontPanelConnector(J9E3)...........111
Table A-23 Hot-PlugIndicatorBoardConnectorPinout(J3D1).....114
Table A-24 MemoryModuleInterface............115
Table A-25 ProcessorCardConnector(J7A1,J7B1,J7C1,J7D1).....119
Table A-26 ProcessorVRMConnectors(J2A2,J2B1,J2C1)......123
Table A-27 ServerMonitorModuleConnectorPinout.......126
Table A-28 SMBusConnector(J9E4)............127
Table A-29 ICMBConnector(J1D2).............128
Table A-30 IMBConnector(J8F1).............128
Table A-31 ProcessorFanConnector#1(J3C1).........129
Table A-32 ProcessorFanConnector#2(J3A1).........129
Table A-33 ProcessorFanConnector#3(J4A1).........130
Table A-34 ProcessorFanConnector#4(J4C1).........130
Table A-35 InternalDiskDriveLEDConnector.........130
Table A-36 ConfigurationJumperSettings ..........132
Table A-37 ConfigurationofJumpers............132
Table A-38 BeepCodes................136
Table A-39 InterruptDefinitions.............137
Table A-40 StandardVGAModes.............138
Table B-1 EnvironmentalSpecifications...........141
007-4276-001 xv
About This Guide
This guide contains a detailed description of the SGI™ 1450 server chassis and provides
information on removing and installing field-replaceable components.
The information in this guide is intended for trained service personnel.
The following topics are covered:
• Detailed Chassis Description
• Removing and Installing System Components
• Removing and Installing Baseboard Components
•SolvingProblems
See the SGI 1450 Server User’s Guide for information on installing customer-replaceable
components and configuring software and utilities.
See the SGI 1450 Server Mounting Instructions for instructions on mounting the SGI 1450
server in a 19-inch rack.
See the SGI 1450 Server Quick Start Guide for information on setting up your system.
Obtaining Publications
To obtain SGI documentation, go to the SGI Technical Publications Library at
http://techpubs.sgi.com.
Reader Comments
Ifyouhavecommentsaboutthetechnicalaccuracy,content,ororganizationofthis
document, please tell us. Be sure to include the title and document number of the manual
xvi 007-4276-001
About This Guide
with your comments. (Online, the document number is located in the front matter of the
manual. In printed manuals, the document number can be found on the back cover.)
You can contact us in any of the following ways:
• Send e-mail to the following address:
techpubs@sgi.com
• Use the Feedback option on the Technical Publications Library World Wide Web
page:
http://techpubs.sgi.com
• Contact your customer service representative and ask that an incident be filed in the
SGI incident tracking system.
• Send mail to the following address:
Technical Publications
SGI
1600 Amphitheatre Pkwy., M/S 535
Mountain View, California 94043-1351
• Send a fax to the attention of “Technical Publications” at +1 650 932 0801.
SGIvaluesyourcommentsandwillrespondtothempromptly.
007-4276-001 1
Chapter 1
1. Detailed Chassis Description
This chapter provides a detailed description of chassis features. For a general
description, see the SGI 1450 Server User’s Guide.
The following sections are covered:
• Chassis Features
• Peripherals
•HardDriveBay
•PowerSubsystem
• System Cooling
•E-Bay
• Chassis Front Controls and Indicators
• Rear Panel I/O Ports and Features
2007-4276-001
1: Detailed Chassis Description
Chassis Features
The SGI 1450 server is designed either to be mounted in a standard 19-inch rack (rack
mode) or to stand upright (pedestal mode). Table 1-1 shows the physical specifications
for the SGI 1450 server in rack mode.
For instructions on mounting the SGI 1450 server in a 19-inch rack, see the SGI 1450
Server Mounting Instructions.
Table 1-1 SGI 1450 Server Physical Specifications
Specification Rack Mode
Height 4u (7 inches)
Width 17.5-inch rack
Depth 26.5 inches
Weight 57 lbs (26 kg), minimum configuration
88 lbs (40 kg), maximum configuration
Required front clearance 3 inches (inlet air temperature <35 °C / 95 °F)
Required rear clearance 6 inches (no airflow restriction allowed)
Required side clearance 1 inch
Chassis Features
007-4276-001 3
Figure 1-1 shows an SGI 1450 server in rack-mountable configuration.
Figure 1-1 Server in Rack-Mountable Configuration
A. Top cover. The top cover protects the contents of the chassis.
B. Front cover. The front cover protects the peripheral devices.
C. Front bezel door. When this door is open, you can access hard drives and peripheral
devices.
D. Front bezel.
A
B
C
D
Chassis Features
007-4276-001 5
The top cover is held in place by two thumbscrews, each located at the top rear corner of
the chassis. One of two thumbscrews is noted by “A” in Figure 1-3.
Figure 1-3 Top Cover Thumbscrew
A bezel snaps on to the front of the chassis and allows adequate airflow to cool the system
components. The door in the bezel provides user access to hard drives and the peripheral
bay. Access to the power supplies is provided by removing the front bezel completely.
A
6007-4276-001
1: Detailed Chassis Description
Figure 1-4 gives an overhead view of the system with the top cover and front bezel
removed.
Figure 1-4 (Left) Server without Covers. (Right) Overhead View of E-Bay
Warning: The total power requirement for the SGI 1450 server exceeds the 240 VA
energy hazard limit that defines an operator-accessible area. Only qualified service
technicians should access the processor, memory, power subsystem, and non-hot-plug
areas of the baseboard.
A1 A2
CB
D
E
E3
E5
E2
E4
E7
E6
E1
G
HF
I
Chassis Features
007-4276-001 7
Table 1-2 summarizes the SGI 1450 server features, using the callouts provided in
Figure 1-4.
Table 1-2 Chassis Feature Summary
Feature Description
A.Peripheral Bay
[A1 and A2]
A peripheral bay in the front of the system has a 5.25-inch device bay
and a media bay.
A1. Peripheral Bay:
Device Bay
The device bay can hold a 5.25-inch CD-ROM or DAT device.
A2. Peripheral Bay:
Media Bay
The media bay holds a 0.5-inch slim-line floppy drive and a 0.5-inch
slim-line CD-ROM drive.
B. Hard Drives The hard drive bay supports up to five 1.0-inch hot-swap Ultra 160
SCSI hard drives.
If the operating system supports hot-swapping of hard drives, these
drives can be changed without shutting down the server.
C. Power Subsystem Installed:
A power subsystem bay that supports up to three 350-watt power
supply modules in a (2+1) redundant configuration.
The power subsystem bay is mounted at the front-left corner of the
chassis and is shipped with three power supply modules.
Each power supply can be changed without shutting down the server.
D. Cooling Installed:
Fan board assembly and six fans in a redundant (5+1) fan array. The
fans cool the baseboard and other components.
In a 5+1 configuration, a failed fan may be removed and installed
without shutting down the server. This process is called
hot-swapping. Hot-swapping fans can only be performed by a
qualified service technician.
8007-4276-001
1: Detailed Chassis Description
E. Electronics Bay
(E-Bay)
The E-Bay contains the baseboard. The baseboard has the following
major components:
Up to four Intel® Pentium® III Xeon™ processors
Server Set™ III HE chipset
Up to sixteen PC/100-compliant registered ECC SDRAM memory
modules that support up to 16 gigabytes of Error Checking and
Correcting (ECC) Synchronous Dynamic RAM
32-bit, 33-MHz, 5V PCI segment with two expansion slots and three
embedded devices
64-bit, 66/33-MHz, 3.3V hot-plug PCI segment with two expansion
slots and one embedded device
64-bit, 33-MHz, 5V hot-plug PCI segment with four expansion slots
and three embedded devices
Compatibility bus segment with three embedded devices
Two externally accessible USB ports
One IDE connector, supporting up to two ATA33 compatible devices
One Adaptec® AIC-7880 SCSI controller
One Adaptec AIC-7899 SCSI controller
The processors, SDRAM memory modules, and hot-plug PCI
components are listed individually below.
E1. Processors The system supports up to four Intel Pentium III Xeon processors.
E2. Registered SDRAM
Memory Expansion
Slots
The memory expansion board holds up to sixteen Dual Inline
Memory Module (DIMM) slots and supports up to 16 gigabytes of
Error Checking and Correcting (ECC) Synchronous Dynamic RAM.
E3. PCI Add-In Slots The baseboard contains two 32-bit 33-MHz non-hot-plug PCI slots.
These boards are half-length boards only.
E4. PCI Hot-Plug Slots The baseboard contains six hot-plug PCI slots. You can add, remove,
or exchange a PCI add-in board from any hot-plug slot without
shutting down the server.
NOTE: At this time, the Linux® operating system does not
support use of the PCI hot-plug (PHP) feature. If you are running
Linux, your system must be turned off before installing or
removing PCI boards. Windows 2000 requires drivers that are
PHP compatible in order to use the PHP feature.
Table 1-2 (continued) Chassis Feature Summary
Feature Description
Peripherals
007-4276-001 9
Peripherals
Peripheral Bay
The chassis contains one peripheral bay for CD-ROM, DAT, and floppy drives. The
peripheral bay contains two smaller bays: a device bay and a media bay.
Device Bay
The device bay accommodates either a 5.25-inch CD-ROM or a DAT drive. We
recommends not installing any device, such as a hard drive, requiring airflow cooling in
the device bay. Installing such a device in this bay causes environmental conditions to
exceed the cooling and electromagnetic interference (EMI) constraints of the system.
Media Bay
The media bay accommodates a 0.5-inch slim line floppy drive and 0.5-inch slim line
CD-ROM drive.
E5. Baseboard Form-factor, 16 (13 inches, ATX-style backpanel I/O)
The baseboard is mounted horizontally in a subassembly called the
E-Bay. The E-Bay is mounted towards the rear of the chassis.
The baseboard contains connectors for installing up to four Pentium
III Xeon processors in single-edge contact (SEC) cartridges.
E6. Voltage Regulator
Module (VRM)
The baseboard contains three embedded VRMs and connectors to
add three additional VRMs.
E7. Lithium Battery This battery is used to power the system clock.
F. Front This side is called the front of the E-Bay.
G. Right This side is called the right of the E-Bay.
H. Back This side is called the back of the E-Bay.
I. Left This side is called the left of the E-Bay.
Table 1-2 (continued) Chassis Feature Summary
Feature Description
10 007-4276-001
1: Detailed Chassis Description
Hard Drive Bay
The chassis contains one hard drive bay. The hard drive bay accommodates up to five
3.5-inch by 1.0-inch hot-swap Ultra 160 SCSI SCA hard drives
You can access the hard drives by opening the front bezel door. As part of the hot-swap
implementation, each hard drive requires a hard drive carrier. When you remove a hard
drive from the system, you remove both the carrier and the hard drive. The drive is
attached to the carrier by four screws. The carrier locks into the hard drive bay by a
locking handle. Figure 1-5 shows the orientation of the drive in the carrier. The carrier is
upside down in this figure.
Figure 1-5 Hard Drive in Drive Carrier
A. Hard drive carrier
B. Four fasteners used to attach drive to carrier
C. Hard drive
D. Connector
E. Locking handle
Each hard drive is connected to an Ultra 160 SCSI hot-swap backplane. The backplane
provides industry-standard 80-pin SCA-2 connectors for each hard drive and accepts
10,000 RPM or slower drives that consume up to 23 watts of power. If another type or
slower Ultra 160 SCSI SCA drive is installed, make sure that the drive meets these
backplane and carrier requirements.
EABCD
Power Subsystem
007-4276-001 11
An LED above each hard drive displays the status of that hard drive. Table 1-3 shows the
hard drive LED status.
The SCSI backplane boardset consists of two separate boards: the SCSI backplane board
and the SCSI-accessed fault-tolerant enclosures specification (SAF-TE) board. The SCSI
backplane board provides power distribution and SCSI interfacing of the hard drives.
The SAF-TE board provides SAF-TE features and hard drive failure indicators.
Power Subsystem
The SGI 1450 server uses a universal input-switching power subsystem (PSBS). This
subsystem provides up to 630 watts DC. The subsystem also minimizes the RMS current
drawn from each AC line by providing power factor corrected AC input. The chassis can
be configured with one, two, or three 350-watt power supply modules. Each module is
designed to minimize electromagnetic interference (EMI) and radio frequency
interference (RFI).
Table 1-3 Hard Drive LED State Status
LED State Status
Solid green The hard drive is present and powered on.
Flashing green The hard drive is active.
Solid yellow There is an asserted fault status on the hard drive.
Flashing yellow A rebuild of the hard drive is in progress.
Off The hard drive is not powered on.
12 007-4276-001
1: Detailed Chassis Description
Figure 1-6 Power Subsystem
Warning: The total power requirement for the SGI 1450 server exceeds the 240 VA
energy hazard limit that defines an operator-accessible area. Only qualified service
technicians should access the processor, memory, power subsystem, and non-hot-plug
areas of the baseboard.
The power subsystem consists of a power subsystem bay, with up to three power supply
modules. The power supply modules are noted by “A” in Figure 1-6. The power
subsystem bay contains a power distribution board, which manages the power delivered
by all functional power supplies.
The power subsystem can operate in either a nonredundant or redundant manner.
Nonredundant operation means that you are using only one or two power supply
modules. If the module ceases to function normally, the server system cannot function
properly, if at all. A minimal configuration supported by one module is one processor,
four memory DIMMs, one hard drive slower than 10,000 PRM, one floppy drive, and one
CD-ROM.
A
Power Subsystem
007-4276-001 13
The SGI 1450 server uses a redundant (2+1) power subsystem. To form a (2+1) redundant
power subsystem, the subsystem parallels the DC output of one power supply module
with one or two other modules. If one module ceases to function normally, the remaining
modules provide power to the server system and the system continues to function
properly. Two power supply modules are required to provide power to a fully configured
SGI 1450 server. The third module provides redundancy. A fully configured system
includes four processors, sixteen gigabytes of memory, one floppy drive, one CD-ROM,
five hard drives, and eight PCI add-in boards.
The baseboard contains three embedded voltage converters: two 5 V input and one 12 V
input. The baseboard also provides three connectors supporting 8.3-compliant, plug-in
voltage regulator modules (VRMs).
Each power subsystem auto-senses within the following voltage ranges and is rated as
follows:
• 100-120 V~ at 50/60 Hertz (Hz); 11.0 A maximum
• 200-240 V~ at 50/60 Hz; 5.5 A maximum
The DC output voltages of each power supply module are:
• +3.3 V at 28 A max (total combined power of the +3.3 and +5 channels must not
exceed 195 W)
• +5 V at 32 A max (total combined power of the +3.3 and +5 channels must not
exceed 195 W)
•+12Vat12.0Awith15.0Apeak
•-12Vat0.5A
• +5 V standby at 2 A whenever AC power is supplied to the server system
The DC output voltages of the power subsystem with two or three modules are:
• +3.3 V at 50 A max (total combined power of the +3.3 and +5 channels must not
exceed 351 W)
• +5 V at 58 A max (total combined power of the +3.3 and +5 channels must not
exceed 351 W)
•+12Vat22.0Awith28.0Apeak
•-12Vat0.5A
•+5Vstandbyat2A
14 007-4276-001
1: Detailed Chassis Description
DC power is sourced through 20-pin and 24-pin power cables to the baseboard. Remote
sensing signals are provided through one 14-pin auxiliary power cable to the baseboard.
The AC power status of each power supply module is indicated by an LED. The LED is
located on the power supply module. Table 1-4 shows the AC power LED status.
There are also three standby channels and each has an LED called a standby LED. These
LEDs are located on the right side of the power subsystem bay and each indicates the
status of that standby channel.
Individual power supply modules are hot-swappable. In other words, you can remove
and install a power supply module without shutting down the server. After a power
supply module has been removed from the system, airflow patterns are disrupted within
the system. To maintain correct airflow patterns within the chassis and to ensure that all
components remain within specification under all system environmental conditions,
power supply module hot-swap operations should not exceed two minutes in duration.
System Cooling
The SGI 1450 server uses up to six fans mounted in a fan board assembly in the middle
of the chassis between the E-Bay and peripheral bays. The six fans are noted by “A” in
Figure 1-7.
Table 1-4 AC Power LED State Status
LED State Status
Solid green AC power is applied to the power subsystem and standby voltage is available.
Off The LED is off when one of the following conditions occur:
The power supply modules are disabled by the DC enable signal.
The power supply module is disabled by another switch.
The power supply module has been overstressed.
The power supply module has failed and replacement of the unit is necessary.
System Cooling
007-4276-001 15
Figure 1-7 Fan Board Assembly
The cooling system supports either a non-redundant configuration or a redundant
configuration. A non-redundant configuration includes just three fans. If any one of these
threefansceasestofunctionnormally,environmentalconditionswithinthechassismay
exceed the environmental regulations in this guide and the chassis may not function
normally. Three fans support any system configuration but without fan redundancy.
The SGI 1450 server uses all six fans to form a redundant cooling system. If one of the six
fans ceases to function normally, the remaining five fans adequately cool the system.
Using six fans supports any configuration up to the maximum configuration.
Air flows in through the front bezel over the power subsystem bay, the peripheral bay,
and the hard drive bay. The air then passes through the fan board assembly and the
E-Bay. Finally, the air exhausts through the rear and left side of the chassis.
Individual fan status indicators are located on the fan board mounted in the fan board
assembly. Fan failure is also indicated by the general fault LED located at the front of the
chassis.
A
16 007-4276-001
1: Detailed Chassis Description
An LED above each cooling fan displays the status of that fan. The LEDs for two fans are
noted by “A” in Figure 1-8. The LED on the left indicates the status of the fan pointed to
by the left arrow. The LED on the right indicates the status of the fan pointed to by the
right arrow.
Figure 1-8 Fan LEDs
Table 1-5 shows the fan LED state status.
Caution: Thetopcovermustbeonthesystemforpropercooling.
Individual fans are hot-swappable. In other words, you can remove and install a fan
without shutting down the server. After a fan has been removed from the system, airflow
Table 1-5 Fan LED State Status
LED State Status
Solid amber There is a fault with the cooling fan or the cooling fan is not present.
Off The cooling fan is functioning properly.
A
!
E-Bay
007-4276-001 17
patterns are disrupted within the system. To maintain correct airflow patterns within the
chassis and to ensure that all components remain within specification under all system
environmental conditions, fan hot-swap operations should not exceed two minutes in
duration.
E-Bay
The E-Bay contains the baseboard with the following components:
• Up to four Intel Pentium III Xeon processors. The baseboard has four SC330.1
connectors; each supports a processor. There are also four embedded voltage
regulator modules (VRM) and three VRM 8.3-compliant connectors to support up
to four processors.
• The Server Set III HE chipset. This includes the HE North Bridge, Open South
Bridge (OSB4), and I/O.
• Up to sixteen PC/100-compliant registered ECC SDRAM memory modules that
support up to 16 gigabytes of Error Checking and Correcting (ECC) Synchronous
Dynamic RAM.
• 32-bit, 33-MHz, 5 V PCI segment with two expansion slots and three embedded
devices.
• 64-bit, 66/33-MHz, 3.3 V hot-Plug PCI segment with two expansion slots and one
embedded device.
• 64-bit, 33-MHz, 5 V hot-Plug PCI segment with four expansion slots and three
embedded devices.
• Compatibility bus segment with three embedded devices.
• Two externally accessible USB ports.
• One Adaptec AIC-7880 SCSI controller.
• One Adaptec AIC-7899 SCSI controller.
The Adaptec AIC-7899 SCSI controller has two channels called A and B. Channel A is
connected to the HDD backplane. Channel B is connected to the back of the system to
which external SCSI devices may be connected.
The Adaptec AIC-7880 SCSI controller supports both a legacy wide SCSI device and
legacy narrow SCSI device.
18 007-4276-001
1: Detailed Chassis Description
Chassis Front Controls and Indicators
Figure 1-9 shows the front panel controls and indicators.
Figure 1-9 Front Panel Controls and Indicators
A. Power on/off button: If you press this button when the system is off, you turn on the
power subsystem. If you press this button when the system is in sleep state, you activate
it. If you hold down the button for more than 4 seconds, you override the ACPI mode
and the power is turned off.
B. Reset button: If you press this button, you reset the system. If you hold down this
button for 4 seconds or more, push on the power button, and then release both the reset
and power buttons within one second of each other, the CMOS will be cleared.
Caution: The CMOS should be cleared only if it has been corrupted.
C. Sleep button: If the operating system supports ACPI and you press this button, the
operating system goes into sleep state (S1). If you press this button during sleep state, the
operating system becomes active. This system does not have a service mode.
D. Front panel LEDs from left to right:
D0. General System Fault LED: Yellow indicates a system failure.
D1. NIC activity LED: Green indicates NIC activity.
D2. HDD activity LED: Green indicates any system hard drive activity.
D3. Main power LED: Solid green indicates the presence of DC power in the server.
Flashing green indicates that the system is in ACPI sleep mode.
B C
A
D0 D1 D2 D3
!
Rear Panel I/O Ports and Features
007-4276-001 19
Rear Panel I/O Ports and Features
Figure 1-10 shows a detailed view of the rear panel I/O ports and features.
Figure 1-10 Rear Panel I/O Ports and Features
A. AC input power connector
B. External SCSI connector ports
C. Hot-plug 64-bit, 33-MHz PCI add-in board slots
D. Hot-plug 64-bit, 66/33-MHz PCI add-in board slots
E. Non-hot-plug 32-bit, 33-MHz PCI add-in board slots
These slots can also accept an Intelligent Chassis Management Bus (ICMB) SEMCONN
6-pin connector in/out
F. Video connector
G. USB ports 0 (upper) and 1 (lower), 4-pin connectors
H. NIC RJ45 connector
AON
B
F
G
I
K
L
M
JH
EDC
20 007-4276-001
1: Detailed Chassis Description
I. Serial port 2 (COM1), 9-pin RS-232 connector
J. IEEE 1284-compliant, 25-pin bi-directional parallel connector
K. Serial port 1 (COM1), 9-pin RS-232 connector
L. PS/2-compatible keyboard connector
M. PS/2-compatible mouse connector
N. HW push button
O. PCI green and amber LEDs (inside the chassis)
22 007-4276-001
2: Removing and Installing System Components
Tools and Supplies Needed
The following tools and supplies will allow you to remove and install all the system
components covered in this chapter:
• Phillips screwdriver (#1 and #2)
• Flat head screwdriver (#2)
• Jumper-removal tool or needle-nosed pliers
• Antistatic wrist strap and conductive foam pad (recommended)
•Penorpencil
• Equipment log: as new parts are integrated into the system, add information about
themtotheequipmentlog(see“EquipmentLog”onpage84).Recordthemodel
and serial number of the system, all installed options, and any other pertinent
information specific to the system. Some of this information may be required when
running the system setup utility (SSU).
Pre-Installation Safety Precautions
The following warnings and cautions apply whenever you remove the top and front
covers of the system. Only a technically qualified person should integrate and configure
the system.
Warning: Hazardous voltage, current, and energy levels are present inside the
power subsystem. There are no user-serviceable parts inside it; servicing should be
done by technically qualified personnel.
Warning: The total power requirement for the SGI 1450 server exceeds the 240 VA
energy hazard limit that defines an operator-accessible area. Only qualified service
technicians should access the processor, memory, power subsystem, and non hot-plug
areas of the baseboard.
Front Cover
007-4276-001 23
Caution: ESD can damage disk drives, boards, and other parts. It is recommended that
all procedures in this chapter be performed only at an ESD-protected workstation. If one
is not available, provide some ESD protection by wearing an antistatic wrist strap
attached to chassis ground—any unpainted metal surface—on your system when
handling parts.
Caution: Always handle boards carefully. They can be extremely sensitive to ESD. Hold
boards only by their edges. After removing a board from its protective wrapper or from
the system, place it component-side UP on a grounded, static-free surface. If you place
the baseboard on a conductive surface, the battery leads may short out. If they do, this
will result in a loss of CMOS data and will drain the battery. Use a conductive foam pad
if available but not the board wrapper. Do not slide the board over any surface.
Caution: For proper cooling and airflow, always install the front cover before turning on
the system. Operating the system for an extended period of time without the top and
front covers in place can damage system parts.
Caution: If the SGI 1450 server is turned on and has only three fans installed, make sure
that you install the top cover within five minutes of removing it.
Front Cover
Follow the instructions in this section to remove and install the front cover.
Removing the Front Cover
To reach components inside the system, remove the front cover, and in some cases the
front bezel. Facing the front of the system, the front cover is on top and towards the front
of the rack-mounted chassis. See Figure 1-1 on page 3 for the location of the front cover.
The following tasks require removal of the front cover:
• Removing and installing non-hot-swap drives in the media bay
!
!
!
!
24 007-4276-001
2: Removing and Installing System Components
• Removing and installing media devices in the device bay
• Removing and installing the fan board assembly
• Removing and installing the power subsystem bay
• Removing and installing a power supply module (front bezel only)
To remove the front cover, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the front bezel by gently pulling it towards you. The ball studs will release
from the chassis.
3. Remove the three screws located on the top of the chassis. These screws are noted by
“A” in Figure 1-2 on page 4. Save these screws; you need them later to reattach the
cover.
4. Using an even pull and pressing down, slide the cover back towards the front of the
chassis about 0.75 inch.
5. Lift the front cover up and out of the chassis.
Installing the Front Cover
To install the front cover, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Before replacing the front cover, check that no loose tools or parts were left inside
the system.
3. Check that cables and other components are properly installed.
4. Position the cover over the chassis so that the rows of tabs align with slots in the
chassis. Slide the cover toward the back of the system until the tabs on the cover
firmly engage in the chassis.
5. Attach the cover to the chassis with the three screws removed earlier, and tighten
them firmly.
6. Install the bezel by gently applying pressure towards the chassis. The ball studs
snap into the chassis.
Top Cover
007-4276-001 25
Top Cover
Follow the instructions in this section to remove and install the top cover.
Removing the Top Cover
To reach components inside the system, remove the top cover. Facing the front of the
system, the top cover is on top and towards the back of the rack-mounted chassis. See
Figure 1-1 on page 3 for the location of the top cover. The following tasks require removal
of the top cover:
• Accessing baseboard components including but not limited to non-hot-plug PCI
add-in boards, extension boards, memory slots, Voltage Regulator Modules
(VRMs), and processors
• Exchanging individual fans
• Removing and installing the fan board assembly
• Removing and installing the power subsystem bay
To remove the top cover, perform the following steps.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Release the two thumbscrews located on the top rear of the chassis. One of two
thumbscrews are noted by “A” in Figure 1-3 on page 5.
3. Using an even pull, press lightly on the top cover and slide it back until it stops.
4. Lift the entire cover upward and away from the chassis.
Installing the Top Cover
To install the top cover, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Before replacing the top cover, check that no left loose tools or parts were left inside
the system.
3. Check that cables, add-in boards, and other components are properly installed.
26 007-4276-001
2: Removing and Installing System Components
4. Position the cover over the chassis so that the rows of tabs align with slots in the
chassis. Slide the cover toward the front of the system until the tabs on the cover
firmly engage in the chassis.
5. Attach the cover to the chassis with the two thumbscrews released earlier, and
tighten them firmly.
6. Connect any external cables.
Memory Retention Bar
When accessing baseboard components, you need to remove and install the memory
retention bar.
Removing the Memory Retention Bar
To remove the memory retention bar, follow these steps:
1. Unscrew the captive screw located at the front of the E-Bay. The captive screw is
noted by “A” in Figure 2-1.
2. LiftupthebarfromthesidelocatedatthefrontoftheE-Bay.
3. Release the clip located at the rear of the chassis. The clip is noted by “C” in
Figure 2-1.
Baseboard
007-4276-001 27
Figure 2-1 Memory Retention Bar
A. Captive screw
B. Memory retention bar
C. Clip at the rear of the chassis
Installing the Memory Retention Bar
1. Slip slots in the memory retention bar into the clip located at the rear of the chassis.
The clip is noted by “C” in Figure 2-1.
2. Secure the other side of the memory retention bar with the captive screw, as shown
in Figure 2-1.
Baseboard
This section covers the removal and installation of the baseboard, which requires the
removal and installation of baseboard components. The baseboard resides in the E-Bay.
The front, right, back, and left sides of the E-Bay are marked in Figure 1-4 on page 6.
C
AB
28 007-4276-001
2: Removing and Installing System Components
Removing the Baseboard
To remove the baseboard, follow these steps:
Caution: The baseboard can be extremely sensitive to ESD and always requires careful
handling. After removing it from the system, place it component-side UP on a
non-conductive, static-free surface to prevent shorting out the battery leads. If you place
the board on a conductive surface, the battery leads may short out. This will result in a
loss of CMOS data and will drain the battery. Do not slide the baseboard over any
surface.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Turn off all peripheral devices connected to the system.
3. Turn off the system power by pressing the power on/off button on the front panel,
and unplug all AC power cords.
4. Label and disconnect all peripheral cables attached to the I/O panel on the back of
the system.
5. Remove the front cover. See “Removing the Front Cover” on page 23.
6. Remove the top cover. See “Removing the Top Cover” on page 25.
7. Remove the foam cover that shields the E-Bay.
8. Remove the fan board assembly. See “Removing the Fan Board Assembly” on
page 39.
9. Remove the memory retention bar. See “Removing the Memory Retention Bar” on
page 26.
10. Remove the memory module. See “Removing the Memory Module” on page 55.
11. Disconnect internal cables to the baseboard. Cables and connectors include:
• ThreeribboncablesatthefrontoftheE-Bay
• Three power connectors
• A ribbon cable located next to the non-hot-plug PCI add-in boards at the back of
the E-Bay
• A 13-pin AUX-IMB connector
!
Baseboard
007-4276-001 29
12. Remove the 33-MHz half-length PCI add-in boards. See “Removing a 32-bit,
33-MHz Half-Length PCI Add-in Board” on page 65.
13. Follow these steps to remove the power supply AC bracket:
a. Release the screw securing the connector. The screw is noted by “A” in
Figure 2-2.
b. Slide the bracket up and towards the inside of the chassis.
c. Drape the AC bracket over the left side of the E-Bay assembly.
Figure 2-2 Power Supply AC Bracket
A. Screw securing the connector
B. Power supply inlet connector
14. Removethevoltageregulatormodules(VRMs).See“RemovingaVRM”onpage62.
15. Remove the processors and any termination processors. See “Removing a
Processor” on page 59.
16. Remove the processor retention guides. See “Removing Processor Retention
Mechanisms” on page 59.
17. Remove any hot-plug PCI add-in boards. See the SGI 1450 Server User’s Guide.
AB
30 007-4276-001
2: Removing and Installing System Components
18. Remove the plastic slot dividers. First, pull up on the end at the front of the E-Bay,
and then slide the other end out of the back panel at the back of the E-Bay.
19. Removethescrewssecuringthebaseboardtothechassis.Thereshouldbetwoof
them.
20. Remove the four screws on the top and bottom edges of the rear subchassis. These
screws attach the E-Bay to the chassis. Two of the four screws are noted as “A” in
Figure 2-3.
Figure 2-3 E-Bay Retaining Screws
21. Pull the E-Bay away from the chassis. As you separate the E-Bay away, make sure
that the power cord does not become wedged between the two parts of the chassis.
22. Remove the rug from the E-Bay.
23. Using needlenose pliers, remove the plastic rear retention mechanism located at the
front of the E-Bay. The rear retention mechanism is noted by “A” in Figure 2-4 on
page 31.
24. Slidethebaseboardtowardsthefrontofthechassis.
25. Lift the baseboard up and out on the side closest to the baseboard and VRM
connectors.
A
Baseboard
007-4276-001 31
Installing the Baseboard
To install the baseboard, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Pull the E-Bay away from the chassis. As you separate the E-Bay away, make sure
that the power cord does not become wedged between the two parts of the chassis.
3. Hold the baseboard on the side closest to the VRM connectors and processors. Slip
the baseboard under the padding on the right side of the E-Bay and then under the
back panel at the rear of the chassis.
4. Using needlenose pliers, install the plastic rear retention mechanism located at the
front of the E-Bay. The rear retention mechanism is noted by “A” in Figure 2-4.
Figure 2-4 Rear Retention Mechanism
5. Place the rug at the bottom of the E-Bay.
6. SlidetheE-Bayintothechassis.AsyouslidetheE-Bayin,makesurethatthepower
cord does not become wedged between the two parts of the chassis.
7. Attach the four screws on the top and bottom edges of the rear subchassis. See
Figure 2-3 on page 30.
A
32 007-4276-001
2: Removing and Installing System Components
8. Attach the screws securing the baseboard to the chassis. There should be two of
them.
9. Install the plastic slot divider. First, slide one end into the back panel, and then press
the other end into the chassis.
10. Install any hot-plug PCI add-in boards. See the SGI 1450 Server User’s Guide.
11. Install the processor retention guides. See “Installing Processor Retention
Mechanisms” on page 60.
12. Install the processors and any termination processors. See “Installing a Processor”
on page 59.
13. Install the voltage regulator modules (VRMs). See “Installing a VRM” on page 62.
14. Follow these instructions to install the power supply AC bracket. See Figure 2-2 on
page 29.
a. Slide the bracket through the back panel from inside the chassis.
b. Once in place, slide the bracket down into the slot.
c. Attach the screw securing the bracket, as shown in Figure 2-2 on page 29.
15. Add any 33-MHz half-length PCI add-in boards. See “Installing a 32-bit, 33-MHz
Half-Length PCI Add-in Board” on page 66.
16. Connect internal cables to the baseboard. Cables and connectors include:
• ThreeribboncablesatthefrontoftheE-Bay
• Three power connectors
• A ribbon cable located next to the non-hot-plug PCI add-in boards at the back of
the E-Bay
• A 13-pin AUX-IMB connector
17. Install the memory module. See “Installing the Memory Module” on page 55.
18. Install the memory retention bar. See “Installing the Memory Retention Bar” on
page 27.
19. Install the fan board assembly. See “Installing the Fan Board Assembly” on page 40.
20. Place the foam cover over the E-Bay.
21. Installthetopcover.See“InstallingtheTopCover”onpage25.
22. Install the front cover. See “Installing the Front Cover” on page 24.
Power Subsystem
007-4276-001 33
23. Connect all peripheral cables to the I/O panel on the back of the system.
Power Subsystem
Follow the instructions in this section to remove and install a power supply module and
the power subsystem bay.
The SGI 1450 server can accommodate up to three power supply modules, each of which
is enclosed in a power subsystem bay. The power subsystem bay contains a power
distribution board (PDB). This board manages the power delivered by all functional
power supply modules.
Figure 2-5 shows the power subsystem bay with three power supply modules installed.
34 007-4276-001
2: Removing and Installing System Components
Figure 2-5 Power Subsystem
A. One of two screws on both sides of the chassis. When removing the power subsystem
bay, remove these screws.
B. Tab
C. Handle for the power supply module
D. Thumbscrew on the power supply module. When removing the power supply
module, loosen this screw.
E. Power supply module LED
F. Thumbscrew on the front of the power subsystem bay. When removing the power
subsystem bay, loosen this screw.
G. Power supply module standby LED indicating that 5 V standby power is operational.
Each module has one Standby LED. This LED corresponds to the power supply
module on the far right.
ABC
DEFG
Power Subsystem
007-4276-001 35
Warning: Hazardous voltage, current, and energy levels are present inside the
power subsystem. There are no user-serviceable parts inside it; servicing should be
done by technically qualified personnel.
Caution: Once you remove a power supply, make sure you replace it within two
minutes. If not possible in this time frame, re-insert the original unit. When a replacement
unit is available, repeat the replacement procedure. Vacant spaces alter airflow patterns
in the server system and may cause environmental conditions to exceed the
environmental limits of the server.
Removing a Power Supply Module
To remove a power supply module, follow these steps:
1. Remove the front bezel by gently pulling on the edge of the front bezel. The ball
studs of the bezel release. Check the LED for each power supply module to
determine which power supply module needs to be replaced.
2. Loosen the power supply module retaining screw. See Figure 2-5 on page 34 for the
location of the screw.
3. Press down on the power supply module tab. Gently pull the power supply module
handle towards you and remove the power supply module from the power
subsystem bay.
Caution: You might feel initial resistance in sliding out the power supply from its bay.
Do not tilt or twist the supply; this can damage components. Resistance is caused by the
power supply module disengaging from its connector. Use even, steady force to remove
the supply.
Installing a Power Supply Module
To install a power supply module, follow these steps:
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36 007-4276-001
2: Removing and Installing System Components
1. Remove the front bezel by gently pulling on the edge of the front bezel. The ball
studs of the bezel will release.
2. Remove the non-functioning power supply according to the instructions in the
preceding subsection.
3. Line up the new power supply module within the power subsystem bay.
4. Gently push the power supply module into the chassis until the tab snaps into
place. The LED for the new functional power supply module should turn green.
5. Tighten the thumbscrew on the front of the power supply module.
6. Snap on the bezel.
Removing the Power Subsystem Bay
To remove the power subsystem bay, follow these steps:
Warning: The on/off button on the front panel DOES NOT turn off the system AC
power. To remove power from system, unplug the AC power cords from the wall outlet
or the system.
Warning: Hazardous voltage, current, and energy levels are present inside the
power supply. There are no user-serviceable parts inside it; servicing should be done
by technically qualified personnel.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove any DC power cables attached to the hard drive bay or the peripheral bay
devices.
3. Remove the baseboard. See “Removing the Baseboard” on page 28.
4. Loosen the screw on the front of the chassis. This screw is noted by “F” in Figure 2-5
on page 34.
5. Release the two screws on each side of the chassis. One of the screws is noted by
“A”inFigure2-5onpage34.
6. Lift the piece of sheet metal covering the top of the power subsystem bay. The metal
plate is noted by “A” in Figure 2-6 on page 38.
Power Subsystem
007-4276-001 37
7. Un-route the AC distribution cable from the chassis retention features.
8. With the power supplies securely fastened, pull the power subsystem bay out of the
chassis.
9. Before shipping the power subsystem bay for service, remove all power supplies.
Installing the Power Subsystem Bay
To install the power subsystem bay, follow these steps:
Warning: The on/off button on the front panel DOES NOT turn off the system AC
power. To remove power from system, unplug the AC power cords from the wall outlet
or the system.
Warning: Hazardous voltage, current, and energy levels are present inside the
power supply. There are no user-serviceable parts inside it; servicing should be done
by technically qualified personnel.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the non-functioning power subsystem bay according to the instructions in
the preceding subsection.
3. Place the power subsystem bay in the front of the chassis. The front of the power
subsystem bay should be flush with the front of the system.
4. Tighten the screw on the front of the power subsystem bay. The screws are noted by
“F” in Figure 2-5 on page 34.
5. Route the AC distribution cable into the chassis retention feature.
6. Attach the DC power cables to the hard drive bay and to any peripheral bay
devices.
7. Install the baseboard. See “Installing the Baseboard” on page 31.
8. Place the piece of sheet metal that covers the top of the power subsystem bay so that
the front of the sheet metal is flush with the front of the system. The metal plate is
noted by “A” in Figure 2-6.
38 007-4276-001
2: Removing and Installing System Components
Figure 2-6 Metal Plate Covering the Power Subsystem Bay
9. Tightenthetwoscrewsoneachsideofthechassis.Oneofthescrewsforeachsideis
noted by “A” in Figure 2-5 on page 34.
10. Securely fasten the power supply modules in the power subsystem bay. See
“Installing a Power Supply Module” on page 35.
11. Installthetopcover.See“InstallingtheTopCover”onpage25.
12. Install the front cover. See “Installing the Front Cover” on page 24.
Cooling System
Follow the instructions in this section to remove and install the fan board assembly, the
fan board, and each individual fan.
The fan board assembly is held in place by two screws, one on each side of the chassis.
The fan board assembly holds up to six individual fans. The top of each fan has two
finger holds, one on each side of the fan. A connector at the bottom of each fan fits into a
connector in the fan board assembly. Before removing the fan board assembly, make sure
that the replacement assembly is ready.
A
Cooling System
007-4276-001 39
Removing the Fan Board Assembly
To remove the fan board assembly, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Turn off the system by pressing the power on/off button on the front panel, and
unplug all AC power cords.
3. Remove the front cover. See “Removing the Front Cover” on page 23.
4. Remove the top cover. See “Removing the Top Cover” on page 25.
5. Remove all individual fans from the assembly. See “Removing and Installing
Individual Fans” on page 42.
6. Remove the two screws that secure the board assembly to the chassis. Set the screws
aside. You will need them later in this procedure. One of the screws is noted by “A”
in Figure 2-7.
Figure 2-7 Fan Board Assembly Screw
7. Lift the fan board assembly directly upward and rest it on the E-Bay assembly.
8. Disconnect the cables from the assembly. There are three cables, as follows:
A
40 007-4276-001
2: Removing and Installing System Components
• One ribbon cable that connects to the baseboard.
• One ribbon cable that connects to the front panel.
• One power cable that connects to the power subsystem bay.
Installing the Fan Board Assembly
To install the fan board assembly, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Turn off the system by pressing the power on/off button on the front panel and
unplug all AC power cords.
3. Place the new fan board assembly on top of the E-Bay assembly so that the
connectors face the front of the system.
4. Connect the cables from the front panel, baseboard, and power system to the board
assembly.
5. Slide the assembly into the chassis.
6. Attach the two screws that secure the board assembly to the chassis. See Figure 2-7
on page 39.
7. Install the individual fans. See “Removing and Installing Individual Fans” on
page 42.
8. Install the top cover. See “Installing the Top Cover” on page 25.
9. Install the front cover. See “Installing the Front Cover” on page 24.
ReplacingtheFanBoard
To replace the fan board, follow these steps:
1. Remove the fan board assembly. See “Removing the Fan Board Assembly” on
page 39.
2. Remove the screws securing the base from the upper portion of the fan bay
assembly. Keep them in a safe place. You will need them later in the procedure.
3. Rotate the upper portion of the assembly away from the base. The upper portion is
noted by “A” in Figure 2-8. The base is noted by “B”.
Cooling System
007-4276-001 41
Figure 2-8 Fan Assembly Rotated away From Its Base
A. Upper portion of fan board assembly
B. Fan board assembly base
C. Plastic rug
4. Remove the plastic rug, which is noted by “C” in Figure 2-8.
5. Remove the screws that secure the fan board to the assembly.
6. Install the new fan board and attach the screws.
7. Place the plastic rug back into the assembly. The orientation of the rug is important.
For the correct orientation, see Figure 2-8.
8. Rotate the assembly back towards its base.
9. Attach the screws that secure the base to the rest of the fan assembly.
10. Install the fan board assembly. See “Installing the Fan Board Assembly” on page 40.
AB
C
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2: Removing and Installing System Components
Removing and Installing Individual Fans
To remove and install individual fans, follow these steps:
Caution: Onceyouremoveanindividualfan,makesureyoureplaceitwithintwo
minutes. If you cannot replace it, insert the original unit. When you have the replacement
unit, repeat the replacement procedure. Vacant spaces formerly occupied by fans alter air
flow patterns in the server system and may cause environmental conditions to exceed the
environmental limits of the server.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the top cover. See “Removing the Top Cover” on page 25.
3. Place your ring finger and thumb in the fingerholds of the fan in the chassis.
4. Gently pull the fan directly upward and out of the fan board assembly.
5. Slide the replacement fan into the fan board assembly.
6. When you start to feel some resistance, gently push down on the center of the fan
until the connectors solidly join.
7. Install the top cover. See “Installing the Top Cover” on page 25.
Note: After removing an individual fan, the system takes a few seconds to recognize the
absence of the fan. Before replacing the fan, make sure that the LED shows a fault and
recognizes that the slot for the fan is vacant.
Hard Drive Bay
Follow the instructions in this section to remove and install the hard drive bay.
The chassis contains one hard drive bay. The hard drive bay accommodates up to five
3.5-inch by 1.0-inch hot-swap Ultra 160 SCSI SCA hard drives.
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Hard Drive Bay
007-4276-001 43
Removing the Hard Drive Bay
To remove the hard drive bay, follow these steps;
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the front cover. See “Removing the Front Cover” on page 23.
3. Remove the fan board assembly. See “Removing the Fan Board Assembly” on
page 39.
4. Disconnect the four cables attached to the hard drive bay.
5. Remove the SCSI hard drives. See “Removing a SCSI Hard Drive” in the SGI 1450
Server User’s Guide.
6. With a flat head screwdriver, press the two tabs inward on one side. Repeat this step
for the two tabs on the other side. The two tabs are noted by “A” in Figure 2-9.
Figure 2-9 Hard Drive Bay Tabs
A
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2: Removing and Installing System Components
7. With a flat head screwdriver, pry the right side of the hard drive bay out of the
chassis, as shown in Figure 2-10.
Figure 2-10 Removing the Hard Drive Bay from the Chassis
Installing the Hard Drive Bay
To install the hard drive bay, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Slide the hard drive bay into the chassis until the tabs engage the slots on the
chassis.
3. Connect the four cables to the hard drive bay.
4. Install the SCSI hard drives. See “Installing a SCSI Hard Drive” in the SGI 1450
Server User’s Guide.
5. Install the fan board assembly. See “Installing the Fan Board Assembly” on page 40.
6. Install the top cover. See “Installing the Top Cover” on page 25.
7. Install the front cover. See “Installing the Front Cover” on page 24.
Peripheral Devices
007-4276-001 45
Peripheral Devices
The chassis contains one peripheral bay for CD-ROM, DAT, and floppy drives. The
peripheral bay contains two smaller bays: a device bay and a media bay.
Follow the instructions in this section to replace drives in the media bay and the device
bay.
Removing a Drive from the Media Bay
The media bay holds a 0.5-inch slim-line floppy and a 0.5-inch slim-line CD-ROM drive.
The drives are secured to the media bay by a screw as shown in Figure 2-11. (Although
Figure 2-11 shows a single 3.5-inch floppy disk drive, the SGI 1450 server is shipped with
a 0.5-inch slim-line floppy and a 0.5-inch slim-line CD-ROM drive.)
Figure 2-11 Location of the Media Bay Screw
To remove a drive from the media bay, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Turn off the system by using the power on/off button on the front panel and unplug
the AC power cord.
A
46 007-4276-001
2: Removing and Installing System Components
3. Remove the front cover. See “Removing the Front Cover” on page 23.
4. Disconnect the power and signal cables from the back of the drive.
5. Remove and save the screw that secures the drive to the bay. The screw is noted by
“A” in Figure 2-11.
6. Slide the drive out. If the drive will be used again, place it in an antistatic protective
wrapper.
Installing a Drive in the Media Bay
To install a drive in the media bay, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the drive to be replaced according to the instruction in the preceding
subsection.
3. Slide the new drive in the media bay.
4. Connect the power and signal cables to the drive.
5. Insert and tighten the screw that secures the drive to the bay. The screw is noted by
“A” in Figure 2-11.
6. Install the front cover. See “Installing the Front Cover” on page 24.
Replacing a Drive in the Device Bay
To replace a drive in the device bay, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the front cover. See “Removing the Front Cover” on page 23.
3. Turn off the system by pressing the power on/off button on the front panel, and
unplug the AC power cord.
4. Disconnect the power and signal cables from the drive. The connectors are keyed for
ease in reconnecting them to the drive.
5. Slide the drive out. If the drive will be used again, place it in an antistatic protective
wrapper.
6. Slide the new drive into position using the guides in the device bay.
SCSI Requirements
007-4276-001 47
7. Connect the power and signal cables to the drive.
8. Install the front cover. See “Installing the Front Cover” on page 24.
SCSI Requirements
All SCSI devices must not be terminated except the peripheral at the end of the SCSI
cable.
Note: Integrating the 5.25-inch peripheral bay can affect EMC compliance and is a
regulated activity. Except as noted here, any changes to the bay configuration could
result in noncompliance with EMC regulations.
Caution: To avoid damage to a 5.25-inch peripheral device, ensure the EMI gasketing
provided in the device bay does not bridge any open circuits on the exposed peripheral
device.
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007-4276-001 49
Chapter 3
3. Removing and Installing Baseboard Components
This chapter provides information on removing and installing the following baseboard
components:
•Memory
•Processors
• Voltage Regulator Modules (VRMs)
• Backup Battery
•Add-inBoards
•ICMBCard
The removal and installation procedures described in this chapter assume that the
baseboard components are readily accessible. For information on removing the top cover
and other items that may stand in the way of baseboard components, see Chapter 2,
“Removing and Installing System Components”.
50 007-4276-001
3: Removing and Installing Baseboard Components
Tools and Supplies Needed
The following tools and supplies allow you to remove and install all the system
components covered in this chapter:
• Phillips (cross-head) screwdriver (#1 and #2 bit).
• Phillips (cross-head) screwdriver with a long blade (#1 and #2 bit).
• Jumper removal tool or needle-nosed pliers.
• Antistatic wrist strap and conductive foam pad (recommended).
• Pen or pencil.
• Equipment log. As you integrate new parts into the system, add information about
them to your equipment log (see page 84). Record the model and serial number of
the system, all installed options, and any other pertinent information specific to the
system. You will need this information when running the SSU.
Pre-Installation Safety Precautions
The following warnings and cautions apply whenever you work with the baseboard.
Only a technically qualified person should integrate and configure the system.
Warning: The on/off button (a convex button) on the front panel does not turn off
the system AC power. To remove power from system, you must unplug the AC power
cords from the wall outlet or the system.
Warning: Hazardous electrical conditions may be present on power, telephone, and
communication cables. Turn off the system and disconnect the power cords,
telecommunications systems, networks, and modems attached to the system before
opening it. Otherwise, personal injury or equipment damage can result.
Pre-Installation Safety Precautions
007-4276-001 51
Caution: ESD can damage disk drives, boards, and other parts. We recommend that you
do all procedures in this chapter only at an ESD-protected workstation. If one is not
available, provide some ESD protection by wearing an antistatic wrist strap attached to
chassis ground—any unpainted metal surface—on your system when handling parts.
Caution: Always handle boards carefully. They can be extremely sensitive to ESD. Hold
boards only by their edges. After removing a board from its protective wrapper or from
the system, place it component-side UP on a grounded, static-free surface. If you place
the baseboard on a conductive surface, the battery leads may short out. If they do, this
will result in a loss of CMOS data and will drain the battery. Use a conductive foam pad
if available but not the board wrapper. Do not slide the board over any surface.
Caution: For proper cooling and airflow, always install the chassis access covers before
turning on the system. Operating the system without this cover in place can damage
system parts.
Caution: A jumper is a small, plastic-encased conductor that slips over two jumper pins.
Newer jumpers have a small tab on top that you can grip with your fingertips or with a
pair of fine, needle-nosed pliers. If your jumpers do not have such a tab, take care when
using needle-nosed pliers to remove or install a jumper; grip the narrow sides of the
jumper with the pliers. Never grip the wide sides of the jumpers. This can damage the
contacts inside the jumper, causing intermittent problems with the function controlled by
that jumper. Take care to gently grip, but not squeeze, with the pliers or other tool you
use to remove a jumper; otherwise you might bend or break the stake pins on the board.
!
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3: Removing and Installing Baseboard Components
Baseboard Connector and Component Locations
Figure 3-1 shows a detailed view of the baseboard connectors and components.
Figure 3-1 Baseboard Connector and Component Locations
A. Legacy Narrow SCSI
B. Legacy Wide SCSI
C. SMM Connector
D. IMB Connector
E. HDD Activity
F. HPIB Connector
G. ICMB Connector
H. Connector not Used
I. Lithium Battery
J. Memory Module Connector
K. Video Connector
L. USB, External Connector
M. Network Connector
N. Parallel Connector
A
B
J
JJ
I I
HH
K
M
NO
G
H
F
P
I
GG
FFEE
DD
Q
CC
R
BB
S
AA
E
D
T
U
V
W
X
Y
Z
C
L
Memory
007-4276-001 53
O. COM1, COM2 Connector
P. Keyboard/Mouse
Q. Main Power 1
R. Auxiliary Power
S. Main Power 2
T. SMBus
U. Front Panel
V. I D E C o n n e c t o r
W. Floppy Connector
X. Configuration Jumpers
Y. Ultra 160 SCSI A
Z. Ultra 160 SCSI B
AA. Processor #1
BB. Processor #2
CC. Processor #3
DD. Processor #4
EE. Voltage Regulator Module (VRM) Connector #2
FF. Voltage Regulator Module (VRM) Connector #3
GG.VoltageRegulatorModule(VRM)Connector#4
HH. 32-bit, 33-MHz Half-length PCI Slots
II. 64-bit, 66/33-MHz Hot-Plug PCI Slots
JJ. 64-bit, 33-MHz Hot-Plug PCI Slots
Memory
Follow the instructions in this section to remove and install the memory module and
DIMMs.
Main memory resides on an add-in board, called a memory module. The memory
module contains slots for 16 DIMMs, each of which must be at least 64 MB, and is
attached to the baseboard through a 330-pin connector, called the memory expansion
card connector (MECC). The memory module supports PC-100 compliant registered
ECC SDRAM memory modules. The ECC used for the memory module is capable of
correcting single-bit errors (SBEs), detecting 100 percent of double-bit errors over one
code word, and detecting nibble errors.
System memory begins at address 0 and is continuous (flat addressing) up to the
maximum amount of DRAM installed (exception: system memory is non contiguous in
54 007-4276-001
3: Removing and Installing Baseboard Components
the ranges defined as memory holes using configuration registers). The system supports
both base (conventional) and extended memory.
• Base memory is located at addresses 00000h to 9FFFFh (the first 1 MB).
• Extended memory begins at address 0100000h (1 MB) and extends to 3FFFFFFFFh
(16 GB), which is the limit of supported addressable memory. The top of physical
memory is a maximum of 16 GB (to 3FFFFFFFFh).
DIMM memory sizes from 256 MB to 16 GB are supported, with a 64/72-bit
four-way-interleaved pathway to main memory, which is also located on the module.
Therefore, data transfers between MADPs and DIMMs are in four-way interleave
fashion. Each of the four DIMMs must be populated in a bank. The 16 slots are divided
into four banks of four slots each. They are labeled A through D.
Bank A contains DIMM sockets A1, A2, A3, and A4. Banks B, C, and D each contain 4
DIMMsocketsandarenamedinthesamefashion.Therearesilkscreensonthemodule
next to each DIMM socket to label its bank number. For the best thermal results, populate
the banks from A to D. For example, populate bank A and then bank B. For best
performance results, populate adjacent banks. For example, populate bank A and then
bank C.
Figure 3-2 shows a detailed view of the memory module slots.
Figure 3-2 Memory Module DIMM Installation Sequence
A1 A2
A3 A4
B1 B2
B3 B4
C1 C2
C3 C4
D1 D2
D3 D4
XY
Z
Memory
007-4276-001 55
X. One of sixteen DIMM sockets
Y. One of four memory address data paths (MADP)
Z. Memory expansion card connector (MECC)
Removing the Memory Module
The memory module is located on the baseboard as shown in Figure 3-1 on page 52. The
DIMM locations are shown in Figure 3-2.
To remove the memory module, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Pullthemoduleupwardslightlytodisengageitfromthebaseboardconnector.
3. Slide the module straight up and away from the baseboard until it clears the guide
rails.
4. Place the module component-side up on a nonconductive, static-free surface.
Installing the Memory Module
To install the memory module, follow these steps:
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Holding the memory module by its edges, align the module so its edge engages the
guide rails at the back and front of the electronics bay.
Caution: The memory module is held in place by the 330-pin connector on the
baseboard, the guide rails in the center of the electronics bay. You must support the
module until it is fully seated in the connector.
3. Push the memory module toward the baseboard until it fully engages the connector
on the baseboard.
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Removing DIMMs
To remove DIMMs, follow these steps;
Caution: Use extreme care when removing a DIMM. Too much pressure can damage the
socket slot. Apply only enough pressure on the plastic ejector levers to release the DIMM.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the memory module and place it component-side up on a nonconductive,
static-free surface. See “Removing the Memory Module” on page 55.
3. Gently push the plastic ejector levers down to eject the DIMM from its socket.
4. Hold the DIMM only by its edges, being careful not to touch its components or gold
edge connectors. Carefully lift it away from the socket and store it in an antistatic
package.
5. Repeat to remove other DIMMs as necessary.
Installing DIMMs
To install DIMMs, follow these steps:
Caution: Use extreme care when installing a DIMM. Applying too much pressure can
damage the socket. DIMMs are keyed and can be inserted in only one way.
Caution: Mixing dissimilar metals might cause memory failures later, resulting in data
corruption. Install DIMMs with gold-plated edge connectors only in gold-plated sockets.
1. Holding the DIMM only by its edges, remove it from its antistatic package.
2. Orient the DIMM so that the two notches in the bottom edge of the DIMM align
with the keyed socket on the memory module. See Figure 3-3.
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Processors
007-4276-001 57
Figure 3-3 DIMM Orientation in a Memory Module
Note: DIMM slots on the memory module must be installed only in certain
configurations. See the beginning of this section for requirements.
3. Insert the bottom edge of the DIMM into the socket, and then press down firmly on
the DIMM until it seats correctly.
4. Gently push the plastic ejector levers on the socket ends to the upright position.
5. Repeat the steps to install each DIMM.
Processors
Follow the instructions in this section to remove and install a processor, the processor
retention mechanisms, and processor heatsinks.
Caution: You might damage the system if you install a processor that is inappropriate
for your system. Make sure your system can handle the thermal and power conditions of
the newer, faster processor. For exact information about processor interchangeability,
contact your customer service representative.
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3: Removing and Installing Baseboard Components
Caution: Reduce the risk of electrostatic discharge (ESD) damage to the processor by
doing the following: (1) Touch the metal chassis before touching the processor or
baseboard. Keep part of your body in contact with the metal chassis to dissipate the static
charge while handling the processor. (2) Avoid moving around unnecessarily.
A processor has the following components:
Figure 3-4 Processor Orientation and Components
A. Processor 1
B. Processor 2
C. Processor 3
D. Processor 4
E. Screws (2) at the top of the processor
F. Clip on processor handle
G. Processor handle
H. Termination module
I. Processor heat sink
J. Processor retention mechanism
K. Screws (2) for retention module guide rails
L. Note the handle/screw orientation for each processor pair
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D
C
B
A
E
H
F
G
I
J
K
L
Processors
007-4276-001 59
Removing a Processor
See Figure 3-4 for the location of processor components.
1. Observe the safety and ESD precautions at the beginning of this chapter and the
additional cautions given in this section.
2. Remove the two screws that secure the handle to the processor.
3. Pull firmly and straight up on either side of the processor handle.
4. Put the processor on a piece of conductive foam and store it in an antistatic package.
Installing a Processor
See Figure 3-4 for the location of processor components.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the new processor from its antistatic package and place it on a grounded,
static-free surface or conductive foam pad.
3. Attach the processor handle to the processor. For more information, see “Installing
Processor Handles” on page 60.
4. If necessary, attach the heatsink to the processor. For more information, see
“Installing Processor Heatsinks” on page 60.
5. Orient the processor correctly in the chassis. See Figure 3-4 on page 58 and
Figure 3-1 on page 52.
6. Slide the processor into the guides on each side of the processor slot and press the
processor downward firmly into the baseboard connector.
7. Insert and tighten two screws at the top of the processor handle.
Removing Processor Retention Mechanisms
See Figure 3-4 for the location of processor components.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Make sure that the processor has been removed from the baseboard. To remove the
processor, see “Removing a Processor” on page 59.
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3. With a long bladed screwdriver, remove the two screws at the base of the processor
retention mechanism.
4. Remove the retention mechanism from the baseboard.
Installing Processor Retention Mechanisms
See Figure 3-4 for the location of processor components.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Withalongbladedscrewdriver,tightenthetwoscrewsatthebaseoftheprocessor
retention mechanism.
Installing Processor Handles
Depending on your configuration, the handles for the processor might not be attached to
the processor. In this case, you must attach a handle to each processor.
1. OrientthehandleasshowninFigure3-4onpage58.
2. Press the handle into the processor until the handle snaps into place.
Installing Processor Heatsinks
Depending on your configuration, the heatsink for each processor might not be attached.
In this case, you must attach one heatsink to each processor. If you are working with a
processor terminator module, you do not install a heatsink.
See Figure 3-4 for the location of processor components.
1. Remove the heatsink from its protective cover.
2. Pull the tab on the bottom of the heatsink to remove the blue plastic film and expose
the square of adhesive thermal grease that will help attach the heatsink to the
processor.
3. Orient the heatsink on the correct side of the processor. For correct orientation, see
Figure 3-4.
4. Because of the adhesive grease on the heatsink, be careful to orient the heatsink
properly before placing it against the processor.
Voltage Regulator Modules (VRMs)
007-4276-001 61
5. Attach the heatsink to the processor with five 6-32 X 3/8 screws, and tighten to 8-10
inch-pounds.
Voltage Regulator Modules (VRMs)
Follow the instructions in this section to remove and install a VRM.
Up to seven VRMs provide power for processors. Table 3-1 shows the relationship
between VRMs and processors.
VRMs 1 through 4 are embedded in the baseboard. Additional VRMs plug into
connectors 2 though 4 on the baseboard. You must use a specific number and connector
population sequence of VRMs for each combination of processors and termination
boards. Table 3-2 lists the required number and location of VRMs for each potential
processor.
Table 3-1 VRM/Processor Power Sequencing
VRM # VRM provides power for Description
1 (Embedded) Processor #1 Processor core power only
2 (Embedded) Processor #1 GLT (FSB reference)
3 (Embedded) Processor #1 and #2 L2 cache power only
4 (Embedded) Processor #3 and #4 L2 cache power only
#2 Connector Processor #2 Processor core power only
#3 Connector Processor #3 Processor core power only
#4 Connector Processor #4 Processor core power only
Table 3-2 Processor/VRM Population Sequencing
If you have a processor in connector VRM in connector #
1 None. All required VRMs are embedded in the baseboard.
1and2 2
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3: Removing and Installing Baseboard Components
Removing a VRM
To decide which VRM you need to remove, see Figure 3-1 on page 52.
Caution: You might damage the system if you install a VRM that is inappropriate for
your system. For exact information about VRM and processor interchangeability, contact
your customer service representative.
Caution: Reduce the risk of electrostatic discharge (ESD) damage to the VRM by doing
the following: (1) Touch the metal chassis before touching the VRM or baseboard. Keep
part of your body in contact with the metal chassis to dissipate the static charge while
handling the VRM. (2) Avoid moving around unnecessarily.
1. Using a small flat-head screwdriver, push the plastic ejector levers on each end of
the connector away from the VRM to eject it out of the connector. See Figure 3-5 for
the location of the ejector levers.
2. Pull the VRM straight up and out of the baseboard.
3. Place the VRM on a nonconductive, static-free surface, or store it in an antistatic
protective wrapper.
Installing a VRM
To decide on which connector you need to install a VRM, see Figure 3-1 on page 52.
1. Remove the VRM from its protective package.
2. Orient the VRM in the VRM connector correctly. See Figure 3-5.
1, 2, and 3 3
1, 2, 3, and 4 4
Table 3-2 Processor/VRM Population Sequencing
If you have a processor in connector VRM in connector #
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Backup Battery
007-4276-001 63
3. CarefullyinserttheVRMintheconnectoronthebaseboard.Makesureyoudonot
bend the connector pins.
4. Push down firmly on both ends of the VRM until the ejector levers of the connector
snap into place, locking the VRM in the connector.
5. Make sure that the ejector levers are firmly in place. If not, use a screwdriver to push
them into place.
Figure 3-5 Installing a VRM
A. VRM
B. VRM connector on baseboard
C. Ejector lever
Backup Battery
Follow the instructions in this section to replace the lithium battery.
The lithium battery on the baseboard powers the real-time clock (RTC) for three to four
years in the absence of power. When the battery weakens, it loses voltage and the system
settings stored in CMOS RAM in the RTC (for example., the date and time) may be
wrong. Contact your customer service representative or dealer for a list of approved
devices.
B
A
C
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3: Removing and Installing Baseboard Components
Warning: If the system has been running, any installed PCI add-in board on the
baseboard will be hot. To avoid the possibility of a burn, be careful when removing or
installing baseboard components, especially those that are located near processors.
The following warning and translations are required by specific certifying agencies to be
printed immediately adjacent to the procedure for removing the RTC.
Warning: There is a danger of explosion if the battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the equipment
manufacturer. Discard used batteries according to manufacturer's instructions.
Advarsel!: Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering. Udskiftning
må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til
leverandøren.
Advarsel: Lithiumbatteri - Eksplosjonsfare. Ved utskifting benyttes kun batteri
som anbefalt av apparatfabrikanten. Brukt batteri returneres apparatleverandøren.
Va r ni n g : Explosionsfara vid felaktigt batteribyte. Använd samma batterityp eller
en ekvivalent typ som rekommenderas av apparattillverkaren. Kassera använt batteri
enligt fabrikantens instruktion.
Varoitus: Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo
ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hävitä käytetty paristo
valmistajan ohjeiden mukaisesti.
Note the location of the lithium battery in Figure 3-1 on page 52.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the VRMs in VRM connectors 3 and 4. For more information, see
“Removing a VRM” on page 62.
Add-in Boards
007-4276-001 65
3. Insert the tip of a small flat-head screwdriver or equivalent under the plastic tab on
the snap-on plastic retainer.
4. Gently push down on the screwdriver to lift the battery.
5. Remove the battery from its socket.
6. Dispose of the battery according to local ordinance.
7. Remove the new lithium battery from its package and, being careful to observe the
correct polarity, insert it in the battery socket.
Add-in Boards
Follow the instructions in this section to remove and install add-in boards.
Figure 3-1 on page 52 identifies the add-in board locations. The baseboard contains the
following eight PCI slots:
• Two 32-bit, 33-MHz half-length PCI slots
• Two 64-bit, 66/33-MHz hot-plug PCI slots
• Four 64-bit, 33-MHz hot-plug PCI slots
Typically, the hot-plug PCI add-in boards are held in the hot-plug slots by a front and rear
hot-plug retention mechanism. See Figure 3-6 on page 68.
Note: At this time, the Linux operating system does not support use of the PCI hot-plug
(PHP) feature. If you are running Linux, your system must be turned off before installing
or removing PCI boards. Windows 2000 requires drivers that are PHP-compatible in
order to use the PHP feature.
Removing a 32-bit, 33-MHz Half-Length PCI Add-in Board
The add-in boards for the half-length 33-MHz PCI slots are not hot-pluggable. In other
words, you must turn off the AC power to the system first before installing boards at
these locations.
66 007-4276-001
3: Removing and Installing Baseboard Components
Warning: If the system has been running, any installed PCI add-in board on the
baseboard will be hot. To avoid the possibility of a burn, be careful when removing or
installing baseboard components, especially those that are located near processors.
Warning: The on/off button on the front panel does not turn off the system AC
power. To remove power from system, you must unplug the AC power cords from the
wall outlet or the system.
Caution: Slot covers must be installed on all vacant expansion slots. This maintains the
electromagnetic emissions characteristics of the system and ensures proper cooling of
system components.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Disconnect any cables attached to the PCI board you are removing.
3. Remove and save the screw that attaches the existing board retaining bracket to the
chassis.
4. Holding the board by its top edge or upper corners, carefully pull it out. Do not
scrape the board against other components.
5. Store the board in an antistatic protective wrapper.
6. If you are not reinstalling a board in the same slot, install a slot cover over the
vacant slot. The tapered foot of the cover must fit into the mating slot in the
expansion slot frame.
Installing a 32-bit, 33-MHz Half-Length PCI Add-in Board
To install a 32-bit, 33-MHz half-length PCI add-in board, follow these steps:
Warning: If the system has been running, any installed PCI add-in board on the
baseboard will be hot. To avoid the possibility of a burn, be careful when removing or
installing baseboard components, especially those that are located near processors.
!
Add-in Boards
007-4276-001 67
Warning: The on/off button on the front panel does not turn off the system AC
power. To remove power from the system, you must unplug the AC power cords from
the wall outlet or the system.
Caution: Do not overload the baseboard by installing add-in boards that draw excessive
current.
Caution: Add-in boards can be extremely sensitive to ESD and always require careful
handling. After removing the board from its protective wrapper or from the baseboard,
placeitcomponent-sideuponagrounded,static-freesurfaceorconductivefoampad,if
available. Do not slide the board over any surface.
1. Remove the add-in board from its protective wrapper. Be careful not to touch the
components or gold edge connectors. Place the board component-side up on an
antistatic surface.
2. Record the serial number of the add-in board in your equipment log. See
“Equipment Log” on page 84.
3. Set jumpers or switches on the PCI board according to the manufacturer's
instructions.
4. Remove and save the screw that attaches the existing board or expansion slot cover
to the chassis.
5. Remove and save the expansion slot cover.
6. Hold the add-in board by its top edge or upper corners. Firmly press it into an
expansion slot on the baseboard. The tapered foot of the board-retaining bracket
must fit into the mating slot in the expansion slot frame. Install a PCI board
component-side down.
7. Use the screw removed earlier to fasten the new board-retaining bracket to the
chassis. Tighten the screw firmly (6.0 inch-pounds). Attach cables if necessary.
Removing a 64-bit, 66/33-MHz Hot-Plug PCI Add-in Board
See Figure 3-6 for an illustration of the front hot-plug retention mechanism.
!
!
68 007-4276-001
3: Removing and Installing Baseboard Components
Warning: If the system has been running, any installed PCI add-in board on the
baseboard will be hot. To avoid the possibility of a burn, be careful when removing or
installing baseboard components, especially those that are located near processors.
Caution: Slot covers must be installed on all vacant expansion slots. This maintains the
electromagnetic emissions characteristics of the system and ensures proper cooling of
system components.
Note: At this time, the Linux operating system does not support use of the PCI hot-plug
(PHP) feature. If you are running Linux, your system must be turned off before installing
or removing PCI boards. Windows 2000 requires drivers that are PHP-compatible in
order to use the PHP feature.
Figure 3-6 Front Hot-Plug Retention Mechanism
A. Green and amber LEDs
B. Press here on the inside of the chassis and then rotate to release the PCI board
C.PHPretentionmechanismfromtheoutsideofthechassis
D. HW push-button
!
B
ACD
Add-in Boards
007-4276-001 69
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Make sure that the slot is powered off. If the slot is powered on, turn the power to
the slot off through the PCI hot-plug application on your system, or by pressing the
HW push-button.
3. Disconnect any cables attached to the board you are removing.
4. If there is a front and rear hot-plug retention mechanism, release it.
5. Remove the PCI board by pulling straight up.
6. Store board in an antistatic protective wrapper.
7. If you are not reinstalling a board in the same slot, install a slot cover over the
vacant slot. The tapered foot of the cover must fit into the mating slot in the
expansion slot frame.
Installing a 64-bit, 66/33-MHz Hot-Plug PCI Add-in Board
To install a 64-bit, 33/66-MHz hot-plug PCI add-in board, follow these steps:
Warning: If the system has been running, any installed PCI add-in board on the
baseboard will be hot. To avoid the possibility of a burn, be careful when removing or
installing baseboard components, especially those that are located near processors.
Caution: Do not overload the baseboard by installing add-in boards that draw excessive
current.
Caution: Add-in boards can be extremely sensitive to ESD and always require careful
handling. After removing the board from its protective wrapper or from the baseboard,
placeitcomponent-sideuponagrounded,static-freesurfaceorconductivefoampad,if
available. Do not slide the board over any surface.
!
!
70 007-4276-001
3: Removing and Installing Baseboard Components
Note: At this time, the Linux operating system does not support use of the PCI hot-plug
(PHP) feature. If you are running Linux, your system must be turned off before installing
or removing PCI boards. Windows 2000 requires drivers that are PHP-compatible in
order to use the PHP feature.
1. Remove the add-in board from its protective wrapper. Be careful not to touch the
components or gold edge connectors. Place the board component-side up on an
antistatic surface.
2. Record the serial number of the add-in board in your equipment log. See
“Equipment Log” on page 84.
3. Make sure that the slot is powered off. Power off the add-in board through the PCI
hot-plug application on your system, or by pressing the HW push-button.
4. Set jumpers or switches on the board according to the manufacturer's instructions.
5. If necessary, remove and save the expansion slot cover.
6. Hold the add-in board by its top edge or upper corners. Firmly press it into an
expansion slot on the baseboard. The tapered foot of the board-retaining bracket
must fit into the mating slot in the expansion slot frame. Install a PCI board
component-side down.
7. If there is a front and rear hot-plug retention mechanism, engage it.
8. Use the screw removed earlier to fasten the new board to the chassis. Tighten the
screw firmly (6.0 inch-pounds).
9. Attach cables if necessary.
10. Power on the add-in board through the PCI hot-plug application on your system, or
by pressing the HW push-button.
ICMB Card
Follow the instructions in this section to remove and install a ICMB card.
The ICMB card allows two servers to communicate through a serial connection. An
ICMB card is installed in each server; the cards are connected through a serial cable.
!
ICMB Card
007-4276-001 71
Establishing communication between servers using the ICMB card is a two-step process.
First, install the ICMB card in each server. Then, make sure that the software required for
thecardisinplace.SoftwarefortheICMBcardincludesfirmwareonthecardand
software already included in the ISC software. ISC software is included in the server
software kit accompanying the baseboard.
Figure 3-7 shows an ICMB card. A filler panel is attached to the ICMB card with two
screws. The panel, noted by “B”, is identical to any filler panel for a PCI add-in board.
You attach the filler panel to the rear of a chassis in the same way that you would attach
a PCI add-in board.
Figure 3-7 ICMB Card
Installing an ICMB Card
To install an ICMB card, follow these steps:
1. Remove the ICMB card and internal cable from their protective wrapper.
2. Designate a PCI slot for the ICMB card. The card does not plug into the connector on
thebaseboard,butthecarddoesusetheopeningattherearofthechassis.
3. Secure the filler panel to the chassis. On most systems, you use one screw. The screw
is noted by “A” in Figure 3-8.
A
B
C
72 007-4276-001
3: Removing and Installing Baseboard Components
Figure 3-8 Example of an ICMB Card Attached to a Chassis
4. Attach the internal cable to the internal connector on the ICMB card. The internal
cable connection to the card is noted by “A” in Figure 3-9.
Figure 3-9 Internal Cable Attached to the ICMB Card
5. Connect the other end of the cable to the ICMB connector on the baseboard. The
location of the connector is shown in Figure 3-1 on page 52.
6. The ICMB kit contains an external cable. The cable attaches to the card's external
connector. The external cable connection to the card is noted by “A” in Figure 3-10.
A
A
ICMB Card
007-4276-001 73
Figure 3-10 External Cable Attached to the Card
Removing an ICMB Card
To remove an ICMB card, follow these steps:
1. Disconnect the internal and external cables from the card and the baseboard.
2. Remove the screw securing the card to the chassis. The screw is noted by “A” in
Figure 3-8 on page 72.
3. RemovetheICMBcardfromtheserver.
A
007-4276-001 75
Chapter 4
4. Solving Problems
This chapter helps you identify and solve problems that might occur while you are using
the system.
Resetting the System
Table 4-1 shows the commands used to reset the system.
Initial System Startup
Problems that occur at initial system startup are usually caused by incorrect installation
or configuration. Hardware failure is a less frequent cause. Use the following check list
to troubleshoot Startup problems:
• Are all cables correctly connected and secured?
• Are the processors fully seated in their slots on the baseboard?
• Are all PCI add-in boards fully seated in their slots on the baseboard?
• Are all switch and jumper settings on the baseboard correct?
• Are all jumper and switch settings on add-in boards and peripheral devices correct?
To check these settings, see the manufacturer's documentation. If applicable, ensure
Table 4-1 Resetting Commands
To do this: Press:
Clear system memory, restart POST, and reload the operating
system.
Reset button or <Ctrl+Alt+Del>
Cold boot reset, which clears system memory, restarts POST,
reloads the operating system, and stops power to all peripherals.
Power off/on
76 007-4276-001
4: Solving Problems
that there are no conflicts (for example, two add-in boards sharing the same
interrupt).
• Are all DIMMs installed correctly?
• Are all peripheral devices installed correctly?
• If the system has a hard drive, is it properly formatted or configured?
• Are all device drivers properly installed?
• Are the configuration settings made with the SSU correct?
• Is the operating system properly loaded? See the operating system documentation.
• Did you press the system power on/off button on the front panel to turn the server
on (the power-on light should be lit)?
• Are the system power cords properly connected to the system and plugged into a
NEMA 6-15R outlet for 100-120 V~ or for 200-240 V~?
• Is AC power available at the wall outlet?
• If these items are correct but the problem recurs, see “Specific Problems and
Corrective Actions” on page 77.
New Application Software
Problems that occur when you run new application software are usually related to the
software. Faulty equipment is much less likely, especially if other software runs correctly.
Use the following checklist to troubleshoot application software problems;
• Does the system meet the minimum hardware requirements for the software? See
the software documentation.
• Is the software an authorized copy? If not, get one. Unauthorized copies often do
not work.
• If you are running the software from a diskette, is it a good copy?
• If you are running the software from a CD-ROM disk, is the disk scratched or dirty?
• Ifyouarerunningthesoftwarefromaharddrive,isthesoftwarecorrectly
installed? Were all necessary procedures followed and files installed?
• Are the correct device drivers installed?
• Is the software correctly configured for the system?
After the System Has Been Running Correctly
007-4276-001 77
• If the problems persist, contact the software vendor's customer service
representative.
After the System Has Been Running Correctly
Problems that occur after the system hardware and software have been running correctly
often indicate equipment failure. Often the simple solutions for these problems, however,
can cause additional problems. Sometimes problems stem from changes made to the
system, such as hardware or software that has been added or removed. Use the following
checklist to trouble shoot such problems:
• Ifyouarerunningthesoftwarefromadiskette,tryanewcopyofthesoftware.
• IfyouarerunningthesoftwarefromaCD-ROMdisk,tryadifferentdisktoseeif
the problem occurs on all disks.
• If you are running the software from a hard drive, try running it from a diskette. If
the software runs correctly, there may be a problem with the copy on the hard drive.
Reinstall the software on the hard disk, and try running it again. Make sure all
necessary files are installed.
• If the problems are intermittent, there may be a loose cable, dirt in the keyboard (if
keyboard input is incorrect), a marginal power supply, or other random component
failures.
• If you suspect that a transient voltage spike, power outage, or brownout might have
occurred, reload the software and try running it again.
Note: Symptoms of voltage spikes include random errors in data files, a flickering video
display, unexpected system reboots, and lack of response to user command. If you are
experiencing any of these symptoms, you may want to install a surge suppressor
between the power outlet and the system power cords.
Specific Problems and Corrective Actions
This section provides possible solutions for the following problems:
• Power light does not light.
78 007-4276-001
4: Solving Problems
• No beep codes.
• No characters appear on screen.
• Characters on the screen appear distorted or incorrect.
• System cooling fans do not rotate properly.
• Diskette drive activity light does not light.
• Hard drive activity light does not light.
• CD-ROM drive activity light does not light.
• Problems with application software.
Try the solutions in the order given. If you cannot correct the problem, contact your
service representative or authorized dealer.
Power Light Does Not Light
Check the following:
• Are all the power supplies plugged in? Is the power turned on to the power strip or
outlet? Do you have a blown fuse or breaker?
• Is the system functioning normally? If so, the power LED may be defective, the
cable from the front panel to the fan board may be loose, or the cable from the fan
board to the baseboard may be loose.
Ifallitemsarecorrectandproblemspersist,contactyourservicerepresentativeor
authorized dealer.
No Beep Codes
If the system operates normally, but there was no beep, the speaker may be defective. If
the speaker is enabled, but the speaker does not function, contact your service
representative or authorized dealer.
RecordthebeepcodeemittedbyPOST,andsee“ErrorandInformationalMessages”on
page 82.
Specific Problems and Corrective Actions
007-4276-001 79
No Characters Appear on Screen
Check the following:
• Is the keyboard working? Check to see that the “Num Lock” light is functioning.
• Is the video monitor plugged in and turned on? Many modern video monitors shut
down when inactive and may require a moment to warm up when activated.
• Are the brightness and contrast controls on the video monitor properly adjusted?
• Are the video monitor switch settings correct?
• Is the video monitor signal cable properly installed?
• Is the onboard video controller enabled?
If you are using an add-in video controller board, follow these steps:
1. Verify that the video controller board is fully seated in the baseboard connector.
Also verify that the video monitor is plugged in to the active video controller.
2. Reboot the system so that changes take effect.
3. If there are still no characters on the screen after you reboot the system and POST
emits a beep code, write down the beep code. This information is useful for your
service representative. See “Error and Informational Messages” on page 82.
4. If you do not receive a beep code and characters do not appear, the video display
monitor or video controller may have failed. You can verify this by trying the
monitor on another system or trying a different monitor on this system. Contact
your service representative or authorized dealer.
Characters Are Distorted or Incorrect
Check the following:
• Are the brightness and contrast controls properly adjusted on the video monitor?
See the manufacturer's documentation.
• Are the video monitor signal and power cables properly installed?
• Is the correct monitor/video board installed for your operating system?
Iftheproblempersists,thevideomonitormaybefaultyoritmaybetheincorrecttype.
Contact your service representative or authorized dealer.
80 007-4276-001
4: Solving Problems
System Cooling Fans Do Not Rotate Properly
If the system cooling fans are not operating properly, system components could be
damaged.
Check the following:
• Is AC power available at the wall outlet?
• Are the system power cords properly connected to the system and the wall outlet?
• Did you press the power on/off switch?
• Is the power-on light lit?
• Did any of the fan motors stop. (Use the server management subsystem to check the
fan status.)
• Is the cable from the fan board connected to the baseboard?
• Are the power supply cables properly connected to the baseboard and the fan board
assembly?
• Are there any shorted wires caused by pinched cables or power connector plugs
forced into power connector sockets the wrong way?
If the switches and connections are correctly installed and AC power is available at the
wall outlet, contact your service representative or authorized dealer.
Diskette Drive Activity Light Does Not Light
Check the following:
• Are the diskette drive power and signal cables properly installed?
• Are all relevant switches and jumpers on the diskette drive set correctly?
• Is the diskette drive properly configured?
• Is the diskette drive activity light always on? If so, the signal cable may be plugged
in incorrectly.
If you are using the onboard diskette controller, use the SSU to make sure that “Onboard
Floppy” is set to Enabled. If you are using an add-in diskette controller, make sure that
“Onboard Floppy” is set to Disabled. To run the SSU, see “Using the System Setup
Utility” in the SGI 1450 Server User’s Guide.
Specific Problems and Corrective Actions
007-4276-001 81
Iftheproblempersists,theremaybeaproblemwiththediskettedrive,baseboard,or
drive signal cable. Contact your service representative or authorized dealer.
Hard Drive Activity Light Does Not Light
If you installed one or more hard drives in your system, check the following:
• Are the power and signal cables to the drive properly installed?
• Are all relevant switches and jumpers on the hard drive and adapter board set
correctly?
• Is the hard drive properly configured?
CD-ROM Drive Activity Light Does Not Light
Check the following:
• Are the power and signal cables to the CD-ROM drive properly installed?
• Are all relevant switches and jumpers on the drive set correctly?
• Is the drive properly configured?
• Is the onboard IDE controller enabled?
Note: The hard drive activity light on the front panel lights when a SCSI device
controlled by the onboard SCSI host controller is in use. This LED does not display
CD-ROM activity.
Problems with Application Software
Check the following:
• Verify that the software is properly configured for the system. See the software
installation and operation documentation for instructions on setting up and using
the software.
• Try a different copy of the software.
• Make sure all cables are installed correctly.
82 007-4276-001
4: Solving Problems
• Verify that the baseboard jumpers are set correctly. See “Changing Jumper Settings”
on page 133.
• If other software runs correctly on the system, contact your vendor about the failing
software.
If the problem persists, contact the software vendor's customer service representative.
Error and Informational Messages
When you turn on the system, POST displays messages that provide information about
the system. If a failure occurs, POST emits beep codes that indicate errors in hardware,
software, or firmware. If POST can display a message on the video display screen, it
causes the speaker to beep twice as the message appears.
Table 4-2 shows the standard BIOS Port-80 codes.
Table 4-2 Standard BIOS Port-80 Codes
CP Beeps Reason
xx 1-1-1-1 There are no processors present in the system, or the processors are so
incompatible (for example, mismatched cache voltages) that the system BIOS
cannot be run
16 1-2-2-3 BIOS ROM checksum
20 1-3-1-1 Test DRAM refresh
22 1-3-1-3 Test 8742 keyboard controller
28 1-3-3-1 Autosize DRAM, system BIOS stops execution here if the BIOS does not detect
anyusablememoryDIMMs
2C 1-3-4-1 Base RAM failure, BIOS stops execution here if entire memory is bad
46 2-1-2-3 Check ROM copyright notice
58 2-2-3-1 Test for unexpected interrupts
98 1-2 Search for option ROMs. One long, two short beeps on checksum failure
B4 1 One short beep before boot
Error and Informational Messages
007-4276-001 83
Table 4-3 shows the recovery BIOS Port-80 codes.
Table 4-3 Recovery BIOS Port-80 Codes
CP Beeps Reason
xx 1-1-1-1 There are no processors present in the system, or the processors are so
incompatible that the system BIOS cannot be run (like mismatched cache
voltages).
84 007-4276-001
4: Solving Problems
Equipment Log
Use the blank equipment log in Table 4-4 to record information about the system. Some
of this information may be required when running the system setup utility (SSU).
Table 4-4 Equipment Log
Item
Manufacturer
Name Model Number Serial Number Date Installed
System
Baseboard
Processor speed
and cache
Video display
Keyboard
Mouse
Diskette drive A
Diskette drive B
Tape drive
CD-ROM drive
Hard drive 1
Hard drive 2
Hard drive 3
Hard drive 4
Hard drive 5
Equipment Log
007-4276-001 85
Table 4-4 (continued) Equipment Log
Item
Manufacturer
Name Model Number Serial Number Date Installed
007-4276-001 87
Appendix A
A. Technical Reference
This appendix provides a description of the rear panel I/O ports, the peripheral adapter
board and connectors, and the baseboard connectors and jumpers.
Internal Cables and Connectors
Table A-1 describes all cables and connectors of the SGI 1450 server.
Table A-1 SGI 1450 server Cables and Connectors
Type Qty From To Interconnect Description
32-bit PCI, 5 V 2 Baseboard PCI adapter card 120-pin card edge connect
64-bit PCI, 5 V 4 Baseboard PCI adapter card 184-pin card edge connect
64-bit PCI, 3.3 V 2 Baseboard PCI adapter card 184-pin card edge connect
Keyboard 1 Baseboard External interface Keyboard device
Mouse 1 Baseboard External interface Mouse device
System control 1 Baseboard Fan distribution board 2x15 flat ribbon cable
S/M feature 1 Baseboard Intel S/M card 2x13 flat ribbon cable
Narrow SCSI 1 Baseboard 5.25-inch device 2x25 flat ribbon cable
Floppy 1 Baseboard Floppy device 2x17 flat ribbon cable
IDE 1 Baseboard CD-ROM device 2x20 flat ribbon cable
HPIB 1 Baseboard HPIB board 2x10 flat ribbon cable
Auxiliary
processor fans
4 Baseboard N/A 1x3-pin connector, NOT USED
FOR SGI 1450 SERVER
Parallel port 1 Baseboard External interface 25-pin parallel port connector
88 007-4276-001
A: Technical Reference
Serial 2 Baseboard External interface 9-pin serial port connector
Ethernet 1 Baseboard External interface RJ45 connector port
Internal wide
Ultra 160/m
SCSI, channel A
1 Baseboard HDD backplane 68-pin solid core flat ribbon
cable
External wide
Ultra 160/m
SCSI, Channel B
1 Baseboard External interface 68-pin solid core twisted pair
cable to panel mounted external
interface connector
SE wide SCSI 1 Baseboard 5.25-inch device 68-pin connector
Auxiliary IMB 1 Baseboard HDD backplane 1x3-pin connector on baseboard
discrete cabled to a 1x4-pin
connector on HDD backplane
(one pin left floating)
S/M bus 1 Baseboard N/A NOT USED FOR SGI 1450
SERVER
ICMB internal 1 Baseboard ICMB board 1x7-pin cable
ICMB external 2 ICMB board External interface 1x6-pin ICMB cable
USB 2 Baseboard External interface 1x4-pin USB cables
Internal USB 1 Baseboard Internal interface 1x4-pin cable
EBB 1 Baseboard Internal interface 1x3-pin cable
Video 1 Baseboard External interface 15-pin, monitor device
VRM 3 Baseboard VRM module 50-pin
Main power 1 1 Power
supply cage
Baseboard 2x10-pin discrete cable
Main power 2 1 Power
supply cage
Baseboard 2x12-pin discrete cable
Auxiliary
power
1Power
supply cage
Baseboard 2x7-pin discrete cable
Table A-1 (continued) SGI 1450 server Cables and Connectors
Type Qty From To Interconnect Description
Internal Cables and Connectors
007-4276-001 89
Slot 2 4 Baseboard Processor module 330-pin card edge connect
Memory 1 Baseboard Memory module 330-pin card edge connect
DIMM 16 Memory
module
DIMM 168-pin card edge connect
SCA-2 HDD 5 HDD
Backplane
External interface 80-pin SCA-2 compatible device
Auxiliary HDD
fans
2HDD
backplane
N/A 1x3-pin connector, NOT USED
FOR SGI 1450 SERVER
SAFE-TE 1 HDD
backplane
SAF-TE board 120-pin card edge connect
HDD power 2 Power
supply cage
HDD backplane 1x4-pin discrete cable
Front panel 1 front panel Fan board assembly 2x12-pin flat ribbon cable
Fan power 1 Power
supply cage
Fan board assembly 2x3-pin discrete cable
System fans 6 Fan board
assembly
Fan modules 2x2-pin blind mate connector
Peripheral
power
1Power
supply cage
Floppy device (adapter
board) & half height
device
1x4-pin connectors (daisy
chained)
.5-inch floppy
signal
1.5-inch
floppy
adapter
board
.5-inch floppy device 26-pin flat cable
.5-inch
CD-ROM
power
1Peripheral
power
.5-inch CD-ROM
adapter board
1x2-pin, cable also provides
another 1x4pin connector for an
additional half height device
.5-inch
CD-ROM signal
1.5-inch
CD-ROM
adapter
board
.5-inch CD-ROM
device
2x25-pin connector
Table A-1 (continued) SGI 1450 server Cables and Connectors
Type Qty From To Interconnect Description
90 007-4276-001
A: Technical Reference
Connectors Accessible to the User
This section describes the rear panel I/O ports.
Keyboard and Mouse Ports
These identical PS/2-compatible ports share a common housing. The top one is the
mouse and the bottom one is the keyboard. Table A-2 shows the cable pinout
assignments for the keyboard and mouse connectors.
Serial Ports
The baseboard provides two RS-232C serial ports (COM1 is to the left, COM2 is to the
right). They are D-subminiature 9-pin connectors. Each serial port can be enabled
separately with the configuration control provided on the baseboard.
AC distribution 1 Power cord Power supply cage 3-pin PVC double insulated
power cordage
AC power 1 AC
distribution
External interface Recommend 3-pin SJT power
cord
Table A-2 Keyboard and Mouse Connectors
Mouse Pin Signal Keyboard Pin Signal
1 MSEDAT (mouse data) 1 KEYDAT (keyboard data)
2 No connection 2 No connection
3 GND (ground) 3 GND (ground)
4 Fused VCC (+5 V) 4 Fused VCC (+5 V)
5 MSECLK (mouse clock) 5 KEYCLK (keyboard clock)
6 No connection 6 No connection
Table A-1 (continued) SGI 1450 server Cables and Connectors
Type Qty From To Interconnect Description
Connectors Accessible to the User
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The COM2 serial port can be used either as an emergency management port or as a
normal serial port. Table A-3 shows the cable pinout assignments for the serial ports.
Parallel Port
The IEEE 1284-compatible parallel port, used primarily for a printer, sends data in
parallel format. The parallel port is accessed through a D-subminiature 25-pin connector.
TableA-4showsthecablepinoutassignmentsfortheparallelport.
Table A-3 Serial Ports
Pin Signal
1DCD(carrierdetect)
2 RXD (receive data)
3 TXD (transmit data)
4 DTR (data terminal ready)
5GND
6 DSR (data set ready)
7 RTS (request to send)
8 CTS (clear to send)
9 RIA (ring indicator)
Table A-4 Parallel Port
Pin Signal Pin Signal
1 STROBE_L 14 AUFDXT_L (auto feed)
2 Data bit 0 15 ERROR_L
3 Data bit 1 16 INIT_L (initialize printer)
4 Data bit 2 17 SLCTIN_L (select input)
5 Data bit 3 18 GND (ground)
6Databit4 19GND
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Video Port
The video port interface is a standard VGA-compatible 15-pin connector. Onboard video
is supplied by an ATI RAGE IIC VT4 video controller with 2 MB of onboard video
SGRAM. Table A-5 shows the cable pinout assignments for the video port.
7Databit5 20GND
8Databit6 21GND
9Databit7 22GND
10 ACK_L (acknowledge) 23 GND
11 BUSY 24 GND
12 PE (paper end) 25 GND
13 SLCT (select)
Table A-5 Video Port
Pin Signal
1 Red (analog color signal R)
2 Green (analog color signal G)
3 Blue (analog color signal B)
4Noconnection
5GND
6GND
7GND
8GND
9 Fused VCC (+5V)
10 GND
Table A-4 (continued) Parallel Port
Pin Signal Pin Signal
Connectors Accessible to the User
007-4276-001 93
Universal Serial Bus (USB) Interface
The baseboard provides two stacked USB ports (port 0 on top, port 1 on bottom). The
built-in USB ports permit the direct connection of two USB peripherals without an
external hub. If more devices are required, an external hub can be connected to either of
the built-in ports. Table A-6 shows the cable pinout assignments for the USB connector.
11 No connection
12 DDCDAT
13 HSYNC (horizontal sync)
14 VSYNC (vertical sync)
15 DDCCLK
Table A-6 USB Connector
Pin Signal
A1 Fused VCC (+5V /w overcurrent monitor of both port 0 and 1)
A2 DATAL0 (differential data line paired with DATAH0)
A3 DATAH0 (differential data line paired with DATAL0)
A4 GND
B1 Fused VCC (+5V /w overcurrent monitor of both port 0 and 1)
B2 DATAL1 (differential data line paired with DATAH1)
B3 DATAH1 (differential data line paired with DATAL1)
B4 GND
Table A-5 (continued) Video Port
Pin Signal
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ICMB Connectors
The external Intelligent Chassis Management Bus (ICMB) provides external access to
ICMB devices that are within the chassis. This allows you to externally access chassis
management functions, alert logs, post-mortem data, and so on. It also provides a
mechanism for chassis power control. Optionally, the server can be configured with an
ICMB adapter board. This board provides two SEMCONN 6-pin connectors to allow
daisy-chained cabling. Table A-7 shows the cable pinout assignments for the ICMB
connectors.
Ethernet Connector
The system supports one on-board Ethernet connection. Table A-8 shows the cable
pinout assignments for the Ethernet connector.
Table A-7 ICMB Connectors
Pin Signal
1Noconnection
2Noconnection
3 B (negative)
4A(positive)
5Noconnection
6Noconnection
Table A-8 Ethernet Connector
Pin Signal
1TX+
2TX-
3RX+
4 NIC termination
5 NIC termination
Connectors Accessible to the User
007-4276-001 95
Internal SCA-2 HDD Connector
An SCA-2 connector is used on the primary side of the HDD backplane. The pinout is the
same as SCA-1. Table A-9 shows the cable pinout assignments for the internal SCA-2
HDD connector.
6RX-
7 NIC termination
8 NIC termination
9 Speed LED signal
10 +3.3 V standby (for LED)
11 Activity LED signal
12 +3.3 V standby (for LED)
13 GND
14 GND
Table A-9 Internal SCA-2 HDD Connector
Pin Signal Name Type Pin Signal Name Type
1 12VCharge (L) 41 12VGround (L)
2 12V (S) 42 12VGround (L)
3 12V (S) 43 12VGround (L)
412V (S) 44Mated1 (S)
5 Reserved/ESI-1 (S) 45 -EFW (L)
6 Reserved/ESI-2 (S) 46 DIFFSNS (L)
7 -DB(11) (S) 47 +DB(11) (S)
8 -DB(10) (S) 48 +DB(10) (S)
Table A-8 (continued) Ethernet Connector
Pin Signal
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9 -DB(9) (S) 49 +DB(9) (S)
10 -DB(8) (S) 50 +DB(8) (S)
11 -I/O (S) 51 +I/O (S)
12 -REQ (S) 52 +REQ (S)
13 -C/D (S) 53 +C/D (S)
14 -SEL (S) 54 +SEL (S)
15 -MSG (S) 55 +MSG (S)
16 -RST (S) 56 +RST (S)
17 -ACK (S) 57 +ACK (S)
18 -BSY (S) 58 +BSY (S)
19 -ATN (S) 59 +ATN (S)
20 -DB(P) (S) 60 +DB(P) (S)
21 -DB(7) (S) 61 +DB(7) (S)
22 -DB(6) (S) 62 +DB(6) (S)
23 -DB(5) (S) 63 +DB(5) (S)
24 -DB(4) (S) 64 +DB(4) (S)
25 -DB(3) (S) 65 +DB(3) (S)
26 -DB(2) (S) 66 +DB(2) (S)
27 -DB(1) (S) 67 +DB(1) (S)
28 -DB(0) (S) 68 +DB(0) (S)
29 -DB(P1) (S) 69 +DB(P1) (S)
30 -DB(15) (S) 70 +DB(15) (S)
31 -DB(14) (S) 71 +DB(14) (S)
32 -DB(13) (S) 72 +DB(13) (S)
Table A-9 (continued) Internal SCA-2 HDD Connector
Pin Signal Name Type Pin Signal Name Type
Connectors Accessible to the User
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External Adaptec Ultra 160/m SCSI
As an option, the server system can support a shielded external SCSI connection. This
connection is on Channel B of the Adaptec AIC-7899 SCSI Ultra 160 controller. Table A-10
shows the cable pinout assignments for the external Adaptec Ultra 160/m SCSI.
33 -DB(12) (S) 73 +DB(12) (S)
34 5 V (S) 74 Mated 2 (S)
35 5 V (S) 75 5 V ground (L)
36 5 V charge (L) 76 5 V ground (L)
37 Spindle sync (L) 77 Active LED out (L)
38 MTRON (L) 78 DLYD_START (L)
39 SCSI ID (0) (L) 79 SCSI ID (1) (L)
40 SCSI ID (2) (L) 80 SCSI ID (3) (L)
Table A-10 External Adaptec Ultra 160/m SCSI
Pin Signal Name Pin Signal Name
1 DP(12) 35 DM(12)
2 DP(13) 36 DM(13)
3 DP(14) 37 DM(14)
4 DP(15) 38 DM(15)
5DAPHP 39DAPHM
6DP(0) 40DM(0)
7DP(1) 41DM(1)
8DP(2) 42DM(2)
9DP(3) 43DM(3)
Table A-9 (continued) Internal SCA-2 HDD Connector
Pin Signal Name Type Pin Signal Name Type
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10 DP(4) 44 DM(4)
11 DP(5) 45 DM(5)
12 DP(6) 46 DM(6)
13 DP(7) 47 DM(7)
14 DAPLP 48 DAPLM
15 GND 49 GND
16 DIFFSENSE 50 GND
17 TERMPWR 51 TERMPWR
18 TERMPWR 52 TERMPWR
19 NC 53 NC
20 GND 54 GND
21 ATNP 55 ATNM
22 GND 56 GND
23 BSYP 57 BSYM
24 ACKP 58 ACKM
25 RSTP 59 RSTM
26 MSGP 60 MSGM
27 SELP 61 SELM
28 CDP 62 CDM
29 REQP 63 REQM
30 IOP 64 IOM
31 DP(8) 65 DM(8)
32 DP(9) 66 DM(9)
Table A-10 (continued) External Adaptec Ultra 160/m SCSI
Pin Signal Name Pin Signal Name
Connectors Accessible to the User
007-4276-001 99
AC Power Input
AsingleIEC320-C13receptacleisprovidedattherearoftheserver.Useanappropriately
sizedpowercordandACmain.
33 -DP(10) 67 -DM(10)
34 -DP(11) 68 -DM(11)
Table A-10 (continued) External Adaptec Ultra 160/m SCSI
Pin Signal Name Pin Signal Name
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Peripheral Adapter Boards and Connectors
The peripheral adapter boards convert the 50-pin JAE and FFC signal interface
connectors of the 0.5-inch slim line peripherals to a standard 40-pin IDE and 34-pin
floppy cable pinouts. Two unique boards are required, one for the floppy and one for the
CD-ROM.
CD-ROM Connectors
The 40-pin connector for the CD-ROM adapter board is the standard IDE pinout, as
shown in Table A-11.
Table A-11 CD-ROM Adapter Board 40 Position IDE Connector
Pin Signal Pin Signal
1RSTDRV 2GROUND
3 DD7 4 DD8
5 DD6 6 DD9
7 DD5 8 DD10
9 DD4 10 DD1
11 DD3 12 DD12
13 DD2 14 DD13
15 DD1 16 DD14
17 DD0 18 DD15
19 GROUND 20 KEY PIN
21 DRQ 22 GROUND
23 DIOW 24 GROUND
25 DIOR 26 GROUND
27 IORDY 28 CSEL
29 DACK 30 GROUND
Peripheral Adapter Boards and Connectors
007-4276-001 101
Table A-12 shows the cable pinout assignments for the CD-ROM adapter board power
connector.
Table A-13 shows the cable pinout assignments for the audio connector.
Table A-14 shows the cable pinout assignments for the CD-ROM JAE connector.
31 IRQ 32 No connection
33 DA1 34 No connection
35 DA0 36 DA2
37 CS1P_L 38 DS3P_L
39 DHACT_L 40 GROUND
Table A-12 CD-ROM Adapter Board Power Connector
Pin Signal
1GND
2+5Power
Table A-13 Audio Connector
Pin Signal
1 Audio left
2GND
3 Audio right
Table A-14 CD-ROM JAE Connector
Pin Signal Pin Signal
1 Audio L-Ch 2 Audio R-Ch
3 Audio GND 4 GND
Table A-11 (continued) CD-ROM Adapter Board 40 Position IDE Connector
Pin Signal Pin Signal
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5 RESET- 6 DD8
7 DD7 8 DD9
9 DD6 10 DD10
11 DD5 12 DD11
13 DD4 14 DD12
15 DD3 16 DD13
17 DD2 18 DD14
19 DD1 20 DD15
21 DD0 22 DMARQ
23 GND 24 /DIOR
25 DIOW- 26 GND
27 IORDY 28 /DMACK
29 INTRQ 30 /IOCS16
31 DA1 32 /PDIAG
33 DA0 34 DA2
35 /CS1FX 36 /CS3FX
37 /DASP 38 +5 V
39 +5 V 40 +5 V
41 +5 V 42 +5 V
43 GND 44 GND
45 GND 46 GND
47 CSEL 48 GND
49 RESERV 50 RESERV
Table A-14 (continued) CD-ROM JAE Connector
Pin Signal Pin Signal
Peripheral Adapter Boards and Connectors
007-4276-001 103
Floppy Connectors
Table A-15 shows the cable pinout assignments for the 34-position floppy connector.
Table A-15 34-Position Floppy Connector Pin-Out
Pin Signal Pin Signal
1NC 2 HDIn/HDOut/Open
3NC 4 N/C
5NC 6 N/C
7GND 8 FD_INDEX_L
9GND 10Driveselect0
11 GND 12 Drive select 1
13 GND 14 N/C
15 GND 16 Motor on
17 GND 18 Direction select
19 GND 20 STEP
21 GND 22 Write data
23 GND 24 Write gate
25 GND 26 Track 00
27 GND 28 Write protect
29 GND 30 Read data
31 GND 32 Side one Select
33 GND 34 Disk change/ready
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Table A-16 shows the cable pinout assignments for the floppy adapter board power
connector.
Table A-17 shows the cable pinout assignments for the FFC connector.
Table A-16 Floppy Adapter Board Power Connector
Pin Signal
1+5power
2GND
3GND
4Noconnection
Table A-17 FFC connector
Pin Signal Pin Signal
1+5V 2INDEX
3+5V 4DRIVESELECT
5+5V 6DISKCHANGE
7NC 8READY
9 HDOUT(HDATHIGHT
LEVEL)
10 MOTOR ON
11 NC 12 DIRECT SELECT
13 NC 14 STEP
15 GND 16 WRITE DATA
17 GND 18 WRITE GATE
19 GND 20 TRACK 00
21 NC 22 WRITE PROTECT
23 GND 24 READ DATA
25 GND 26 SIDE ONE SELECT
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Table A-18 provides a description of baseboard connectors.
Table A-18 Connector Description
Item Connector Description Item Connector Description
A. J1A1 Keyboard and Mouse
Connector
R. J9F2 Jumper Block
B. J1B3 Internal USB S. J9G1 Jumper Block
C. J2B1
J2A2
J2C1
VRM Connector #3
VRM Connector #4 (VRM
above)
VRM Connector #2 (VRM
below)
T.
U.
J9G2
J9H1
Ultra 160 Wide SCSI
Channel B
Ultra 160 Wide SCSI
Channel A
V. J7J1 Legacy Narrow SCSI
Connector
D. J3C1 Fan Connector #1 W. J7H1 SMM Feature Connector
E. J4C1 Fan Connector #4 X. J6J1 Legacy Wide SCSI
F. J3A1 Fan Connector #2 Y. J6F1 Memory Expansion Card
Connector
G. J4A1 Fan Connector #3 Z. (Top to
bottom)
H. (Top to
bottom)
Processor Connector #4
Processor Connector #3
Processor Connector #2
Processor Connector #1
J4F1
J4G1
J4G2
J4H1
J4H2
J4J1
PCI Slot #3 P64-A1
PCI Slot #4 P64-A2
PCI Slot #5 P64-B1
PCI Slot #6 P64-B2
PCI Slot #7 P64-B3
PCI Slot #8 P64-B4
J7A1
J7B1
J7C1
J7D1
I. J9B2 Auxiliary Power
Connector
J. (Top to
bottom)
AA. J2E1 PCI Slot #2 P32-C1
J9B1
J9D1
Main Power Connector A
Main Power Connector B
BB. J2D1 PCI Slot #1 P32-C2
CC. J3D1 Hot Plug Indicator Board
Connector (HPIB)
Baseboard Connectors
007-4276-001 107
Power Distribution Board Interface Connectors (J9B1, J9D1, J9B2)
The Baseboard receives its main power through two primary and one auxiliary power
connectors. The two main power connectors are identified as J9B1 and J9D1. The
auxiliary power connector, identified as J9B2, provides a power subsystem
communication path, control signals, power supply sense connections, and other
miscellaneous signals that are defined in Table A-19.
Note: The type of connector (in, out, in/out, power, ground) indicated in the following
tables is described from the perspective of the baseboard.
K. J9E1 IDE Activity Input
Connector
DD. J1D2 ICMB Connector
L. J9E4 SMBus Connector EE. J1D1 Video
M. J9E5 IDE Connector FF. J1C2 USB
N. J9E6 Floppy Connector GG. J1C1 NIC
O. J9E3 Front Panel Connector HH. (Top to
bottom)
P. J8F1 IMB Connector J1A2
J1B2
J1B1
Serial Port A
Parallel Port
Serial Port B
Q. J9F1 Jumper Block
Table A-18 (continued) Connector Description
Item Connector Description Item Connector Description
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Table A-19 describes the main power connector A (J9B1).
Table A-19 Main Power Connector A (J9B1)
Pin Signal Type
Current Carrying
Capability Description
1 12V Power 6A Powersupply12V
2 Ground Ground 6 A Ground return connection
3 Ground Ground 6 A Ground return connection
4 Ground Ground 6 A Ground return connection
5 Ground Ground 6 A Ground return connection
6 VCC Power 6 A Power supply 5 V
7 VCC Power 6 A Power supply 5 V
8 VCC Power 6 A Power supply 5 V
9 VCC Power 6 A Power supply 5 V
10 VCC Power 6 A Power supply 5 V
11 SB5V Power 6 A Power supply 5 V standby
12 Ground Ground 6 A Ground return connection
13 Ground Ground 6 A Ground return connection
14 Ground Ground 6 A Ground return connection
15 Ground Ground 6 A Ground return connection
16 VCC Power 6 A Power supply 5 V
17 VCC Power 6 A Power supply 5 V
18 VCC Power 6 A Power supply 5 V
19 VCC Power 6 A Power supply 5 V
20 VCC Power 6 A Power supply 5 V
Baseboard Connectors
007-4276-001 109
Table A-20 describes the main power connector B (J9D1).
Table A-20 Main Power Connector B (J9D1)
Pin Signal Type Current Carrying Capability Description
1 VCC3 Power 6 A Power supply 3.3 V
2 VCC3 Power 6 A Power supply 3.3 V
3 VCC3 Power 6 A Power supply 3.3 V
4 VCC3 Power 6 A Power supply 3.3 V
5 VCC3 Power 6 A Power supply 3.3 V
6 VCC3 Power 6 A Power supply 3.3 V
7 Ground Ground 6 A Ground return connection
8 Ground Ground 6 A Ground return connection
9 Ground Ground 6 A Ground return connection
10 Ground Ground 6 A Ground return connection
11 Ground Ground 6 A Ground return connection
12 12 V Power 6 A Power supply 12 V
13 VCC3 Power 6 A Power supply 3.3 V
14 VCC3 Power 6 A Power supply 3.3 V
15 VCC3 Power 6 A Power supply 3.3 V
16 VCC3 Power 6 A Power supply 3.3 V
17 VCC3 Power 6 A Power supply 3.3 V
18 VCC3 Power 6 A Power supply 3.3 V
19 Ground Ground 6 A Ground return connection
20 Ground Ground 6 A Ground return connection
21 Ground Ground 6 A Ground return connection
22 Ground Ground 6 A Ground return connection
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Table A-21 describes the auxiliary power connector.
23 Ground Ground 6 A Ground return connection
24 12 V Power 6 A Power supply 12 V
Table A-21 Auxiliary Power Connector (J9B2)
Pin Signal Type
Current Carrying
Capability Description
1 Ground Ground Ground return connection
2 5 V Sense Out N/A Sense line feedback to power supply
3 3.3 V Sense Out N/A Sense line feedback to power supply
4BMCFAN
SPD CTL
Out N/A
5SMPRI
5VSB SCL
In/Out N/A Server management I2C bus - clock
6SMPRI
5VSB SDA
In/Out N/A Server management I2C bus - data
7 Ground Ground Ground return connection
8PWRGD
PS
In N/A Signal from power subsystem
indicating power is stable
9PSPWR
ON_L
Out N/A Control signal from baseboard to
power supply
10 Ground Ground Ground return connection
11 -12 V power Power supply negative 12 V
12 Key N/A
13 12 V power Power supply 12 V
14 Ground Ground Ground return connection
Table A-20 (continued) Main Power Connector B (J9D1)
Pin Signal Type Current Carrying Capability Description
Baseboard Connectors
007-4276-001 111
Front Panel Interface (J9E3)
The front panel attaches to a 30-pin header on the baseboard. The header contains reset,
NMI, sleep, and power control buttons, LED indicators, and an IPMB connection. The
table below summarizes the front panel signal pins, including the signal mnemonic,
name, and brief description.
Note: Thetypeofconnector(in,out,in/out,power,ground)indicatedinTableA-22is
described from the perspective of the baseboard.
Table A-22 Front Panel Connector (J9E3)
Pin Signal Type Description
1 SPKR_FP Out SPEAKER DATA for the front panel/chassis mounted
speaker.
2 GROUND Ground GROUND is the power supply ground.
3 CHASSIS_INTRUSION In CHASSIS INTRUSION is connected to the BMC and
indicates that the chassis has been opened.
CHASSIS_INTRUSION is pulled high to +5 V standby
on the baseboard.
4 FP_HD_ACT* Out HARD DRIVE ACTIVITY indicates there is activity on
one of the hard disk controllers in the system.
5 +5V Power +5 V is the 5 volt power supply.
6 FP_SLP_BTN* In FRONT PANEL SLEEP is connected to the BMC and
causes the system to sleep if supported by the operating
system. FP_SLP_BTN* is pulled high to +5 V on the
baseboard and is intended to be connected to a
momentary-contact push button (connected to
GROUND when pushed) on the system front.
7 COOL_FLT_LED* Out COOLING FAULT LED indicates that either a fan
failure has occurred or the system is approaching an
over-temperature situation. COOL_FLT_LED* is an
output of the BMC.
8 PWR_LED* Out POWER PRESENT LED.
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9 PWR_FLT_LED* Out SYSTEM FAULT indicates that either a power fault or
SCSI drive failure has occurred in the system.
10 GROUND Ground GROUND is the power supply ground.
11 SM_IMB_SDA In/Out I2C DATA is the data signal for the IPMB.
12 FP_NMI_BTN* In FRONT PANEL NMI is connected to a BMC input port,
allowing the front panel to generate an NMI.
FP_NMI_BTN* is pulled high to +5 V on the baseboard
and is intended to be connected to a momentary-contact
push button (connected to GROUND when pushed) on
the system front panel.
13 SM_IMB_SCL In/Out I2C CLOCK is the clock signal for the IPMB.
14 FP_RST_BTN* In FRONT PANEL RESET is connected to the BMC and
causes a hard reset to occur, resetting all baseboard
devices except for the BMC and BMC. FP_RST_BTN* is
pulled high to +5V on the baseboard, and is intended to
be connected to a momentary-contact push button
(connected to GROUND when pushed) on the system
front panel.
15 +5V standby power +5 V STANDBY is the standby 5 volt power supply.
16 FP_PWR_BTN* In FRONT PANEL POWER CONTROL is connected to the
BMC and causes the power to toggle (on → off, or off →
on). FP_PWR_BTN* is pulled high to +5 V standby on
the baseboard and is intended to be connected to a
momentary-contact push button (connected to
GROUND when pushed) on the system front panel.
17 SM_FP_ISOL In SM_FP_ISOL, when asserted, isolates the front panel
SM bus.
18 GROUND Ground GROUND is the power supply ground.
19 FAN_TACH(0) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
20 FAN_TACH(1) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
Table A-22 (continued) Front Panel Connector (J9E3)
Pin Signal Type Description
Baseboard Connectors
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Hot-Plug PCI Indicator Board Interface (J3D1)
The hot-plug PCI indicator board (HPIB) contains the necessary LEDs and push button
switches to help the user run PCI hot-plug (PHP) operations.
To indicate slot status, each PHP slot contains a green LED and amber LED. The actual
interpretation of the LEDs depends on the operating system running on the system.
Each PHP slot also has a momentary switch. When you press this switch, the baseboard
notifies the operating system that a PHP operation on the respective slot is requested. If
a PHP operation is supported by the operating system, the user momentarily presses the
switch and then waits for the operating system to signal via the LEDs that the PHP slot
has been disabled. The user can then perform the desired PHP operation on the slot, such
asreplacing,removing,oraddingaPCIadapter.Whentheuserwantstheoperating
21 FAN_TACH(2) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
22 FAN_TACH(3) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
23 FAN_TACH(4) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
24 FAN_TACH(5) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
25 FAN_TACH(6) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
26 FAN_TACH(7) In FAN_TACH signal is connected to the BMC to monitor
the FAN speed.
27 RJ45_ACTLED_R In NIC activity LED.
28 Reserved - Reserved.
29 SM_PRI_SCL In/Out I2C CLOCK is the clock signal for the primary Private
bus.
30 SM_PRI_SDA In/Out I2C DATA is the data signal for the primary Private bus.
Table A-22 (continued) Front Panel Connector (J9E3)
Pin Signal Type Description
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system to enable and initialize the PHP slot, the user momentarily presses the switch
again.
Note: At this time, the Linux operating system does not support use of the PCI hot-plug
(PHP) feature. If you are running Linux, your system must be turned off before installing
or removing PCI boards. Windows 2000 requires drivers that are PHP compatible in
order to use the PHP feature.
This (active low) switch for the respective slot is routed to the PRSNT1# input to the PCI
hot-plug Controller (PHPC). This switch should not be confused with slot-interlock
switches, which are used in conjunction with mechanical lever designs to prevent access
to an energized PHP slot. The slot interlock inputs into the PHPC are permanently pulled
down to ground and are not accessible through the hot-plug PCI indicator board
interface.
Note: The HW push-button is located on the hot-plug indicator board. Do not use this
button to turn power on and off to the PCI slot. In some instances, pressing this button
interrupts normal operation of the operating system. Instead, turn power off using a
hot-plug PCI application.
The hot-plug PCI indicator board (HPIB) interface contains the necessary signals to drive
the LEDs and receive the push-button signals.
A 20-pin connector is provided on the baseboard for connection to the external HPIB.
Table A-23 shows the cable pinout assignments for the this connector.
Table A-23 Hot-Plug Indicator Board Connector Pinout (J3D1)
Connector
Contact Signal Name
Connector
Contact Signal Name
1Vcc 2GROUND
3 P64_A_SWITCH<0> 4 P64_A_GRN_LED<1>
5 P64_A_AMB_LED<0> 6 P64_A_SWITCH<1>
7 P64_A_GRN_LED<1> 8 P64_A_AMB_LED<1>
9 P64_B_SWITCH<0> 10 P64_A_GRN_LED<0>
Baseboard Connectors
007-4276-001 115
Memory Module Interface (J6F1)
TableA-24describesthecablepinoutassignmentsforthememorymoduleinterface.
11 P64_B_AMB_LED<0> 12 P64_B_SWITCH<1>
13 P64_B_GRN_LED<1> 14 P64_A_AMB_LED<1>
15 P64_B_SWITCH<2> 16 P64_A_GRN_LED<2>
17 P64_A_AMB_LED<2> 18 P64_B_SWITCH<3>
19 P64_A_GRN_LED<3> 20 P64_A_AMB_LED<3>
Table A-24 Memory Module Interface
Pin** Signal Pin Signal Pin Signal Pin Signal
A001 GND B001 PIN_B1 A084 GND B084 MAA9
A002 GND B002 VCC3 A085 MAA10 B085 VCC3
A003 GND B003 SYNTH_OUT_
MADPCLK
A086 MAA11 B086 MAA12
A004 GND B004 VCC3 A087 GND B087 MAA13
A005 ASCLK B005 VCC3 A088 MAA14 B088 VCC3
A006 CMD0 B006 ASDATA A089 MCD_MUXSEL B089 VCC3
A007 GND B007 CMD16 A090 GND B090 VCC3
A008 CMD1 B008 VCC3 A091 BSCLK B091 VCC3
A009 CMD2 B009 CMD3 A092 MECC12 B092 BSDATA
A010 GND B010 CMD19 A093 GND B093 MECC14
A011 CMD17 B011 VCC3 A094 MECC13 B094 VCC3
A012 CMD4 B012 CMD20 A095 MECC15 B095 CMD97
Table A-23 (continued) Hot-Plug Indicator Board Connector Pinout (J3D1)
Connector
Contact Signal Name
Connector
Contact Signal Name
116 007-4276-001
A: Technical Reference
A013 GND B013 CMD6 A096 GND B096 CMD96
A014 CMD18 B014 VCC3 A097 CMD112 B097 VCC3
A015 CMD5 B015 CMD21 A098 CMD113 B098 CMD98
A016 GND B016 CMD23 A099 GND B099 CMD99
A017 CMD8 B017 VCC3 A100 CMD114 B100 VCC3
A018 CMD7 B018 CMD22 A101 CMD100 B101 CMD116
A019 GND B019 CMD9 A102 GND B102 CMD115
A020 CMD25 B020 VCC3 A103 CMD101 B103 VCC3
A021 CMD26 B021 CMD24 A104 CMD117 B104 CMD102
A022 GND B022 CMD10 A105 GND B105 CMD103
A023 CMD12 B023 VCC3 A106 CMD118 B106 VCC3
A024 CMD28 B024 CMD11 A107 CMD119 B107 CMD104
A025 GND B025 CMD27 A108 GND B108 CMD120
A026 CMD29 B026 VCC3 A109 CMD105 B109 VCC3
A027 CMD14 B027 CMD30 A110 CMD121 B110 CMD106
A028 GND B028 CMD13 A111 GND B111 CMD107
A029 CMD15 B029 VCC3 A112 CMD122 B112 VCC3
A030 CMD31 B030 MECC0 A113 CMD123 B113 CMD108
A031 GND B031 MECC1 A114 GND B114 CMD124
A032 MECC2 B032 VCC3 A115 CMD109 B115 VCC3
A033 MECC3 B033 CKE_0 A116 CMD125 B116 CMD110
A034 GND B034 0_RAS A117 GND B117 CMD126
A035 0_WE* B035 VCC3 A118 GND B118 VCC3
A036 0_CAS B036 0_CS0 A119 GND B119 VCC3
Table A-24 (continued) Memory Module Interface
Pin** Signal Pin Signal Pin Signal Pin Signal
Baseboard Connectors
007-4276-001 117
A037 GND B037 0_CS1 A120 CMD111 B120 VCC3
A038 0_CS2 B038 VCC3 A121 CMD127 B121 CKE_1
A039 0_CS3 B039 0_MCDOE* A122 GND B122 1_RAS
A040 GND B040 MEMPRSNT A123 1_WE* B123 VCC3
A041 0_MCDSEL* B041 VCC3 A124 1_CAS B124 1_CS0
A042 GND B042 TMD0 A125 GND B125 1_CS1
A043 GND B043 VCC3 A126 1_CS2 B126 VCC3
A044 CMD34 B044 VCC3 A127 1_CS3 B127 1_MCDOE*
A045 CMD50 B045 CMD49 A128 GND B128 1_MCDSEL*
A046 GND B046 CMD54 A129 CMD80 B129 VCC3
A047 CMD52 B047 VCC3 A130 MECC8 B130 MECC10
A048 CMD51 B048 CMD33 A131 GND B131 CMD64
A049 GND B049 CMD32 A132 CMD81 B132 VCC3
A050 CMD40 B050 VCC3 A133 MECC9 B133 MECC11
A051 CMD38 B051 CMD53 A134 GND B134 CMD65
A052 GND B052 CMD36 A135 CMD66 B135 VCC3
A053 CMD35 B053 VCC3 A136 CMD82 B136 CMD85
A054 CMD42 B054 CMD58 A137 GND B137 CMD67
A055 GND B055 CMD39 A138 CMD83 B138 VCC3
A056 GND B056 VCC3 A139 CMD84 B139 CMD68
A057 GND B057 VCC3 A140 GND B140 CMD71
A058 CMD55 B058 VCC3 A141 CMD87 B141 VCC3
A059 CMD37 B059 CMD43 A142 CMD70 B142 CMD86
A060 GND B060 CMD57 A143 GND B143 CMD69
Table A-24 (continued) Memory Module Interface
Pin** Signal Pin Signal Pin Signal Pin Signal
118 007-4276-001
A: Technical Reference
A061 CMD56 B061 VCC3 A144 CMD73 B144 VCC3
A062 CMD62 B062 CMD63 A145 CMD89 B145 CMD72
A063 GND B063 CMD61 A146 GND B146 CMD88
A064 CMD44 B064 VCC3 A147 CMD76 B147 VCC3
A065 CMD60 B065 CMD41 A148 CMD92 B148 CMD75
A066 GND B066 MECC6 A149 GND B149 CMD91
A067 CMD47 B067 VCC3 A150 CMD74 B150 VCC3
A068 CMD48 B068 CMD59 A151 CMD90 B151 CMD78
A069 GND B069 CMD45 A152 GND B152 CMD77
A070 CMD46 B070 VCC3 A153 CMD94 B153 VCC3
A071 MECC7 B071 MECC4 A154 CMD93 B154 CMD79
A072 GND B072 MECC5 A155 GND B155 CMD95
A073 GND B073 VCC3 A156 GND B156 VCC3
A074 MADPCLK_F
B_DLY
B074 VCC3 A157 GND B157 VCC3
A075 GND B075 BCLK_MADP_
OUT
A158 GND B158 VCC3
A076 MAA0 B076 VCC3 A159 GND B159 VCC3
A077 MAA1 B077 VCC3 A160 GND B160 VCC3
A078 GND B078 SDRDCLK_HE
_DLY
A161 GND B161 VCC3
A079 MAA2 B079 VCC3 A162 GND B162 RESERVED162
A080 MAA3 B080 MAA4 A163 GND B163 VCC
A081 GND B081 MAA5 A164 GND B164 VCC
Table A-24 (continued) Memory Module Interface
Pin** Signal Pin Signal Pin Signal Pin Signal
Baseboard Connectors
007-4276-001 119
*Signal active low.
**Pins are numbered with respect to the module edge connector. Axx signals appear on
the front (processor side) of the processor card.
Processor Module Connector (J7A1, J7B1, J7C1, J7D1)
Table A-25 describes the cable pinout assignments for the processor card connector.
A082 MAA6 B082 VCC3 A165 PIN_A165 B165 VCC
A083 MAA7 B083 MAA8 A166 NC B166 NC
Table A-25 Processor Card Connector (J7A1, J7B1, J7C1, J7D1)
Pin** Signal Pin Signal Pin Signal Pin Signal
A001 RESERVED (nc) B001 PWR_EN1 A084 GND B084 RESERVED (nc)
A002 VCC_TAP B002 VCCP A085 D11* B085 VCCP
A003 RESERVED (nc) B003 OCVR_OK* A086 D10* B086 D17*
A004 GND B004 TEST_VSS_B4 A087 GND B087 D15*
A005 VTT B005 VCCP A088 D14* B088 VCCP
A006 VTT B006 VTT A089 D9* B089 D12*
A007 SELFSB1 B007 VTT A090 GND B090 D7*
A008 RESERVED_A8 B008 VCCP A091 D8* B091 VCCP
A009 RESERVED_A9 B009 RESERVED (nc) A092 D5* B092 D6*
A010 GND B010 FLUSH* A093 GND B093 D4*
A011 TEST_GND (pd) B011 VCCP A094 D3* B094 VCCP
A012 IERR* B012 SMI* A095 D1* B095 D2*
A013 GND B013 INIT* A096 GND B096 D0*
Table A-24 (continued) Memory Module Interface
Pin** Signal Pin Signal Pin Signal Pin Signal
120 007-4276-001
A: Technical Reference
A014 A20M* B014 VCCP A097 BCLK B097 VCCP
A015 FERR* B015 STPCLK* A098 TEST_VSS
(pd)
B098 RESET*
A016 GND B016 TCK A099 GND B099 FRCERR
A017 IGNNE* B017 VCCP A100 BERR* B100 VCCP
A018 TDI B018 SLP* A101 A33* B101 A35*
A019 GND B019 TMS A102 GND B102 A32*
A020 TDO B020 VCCP A103 A34* B103 VCCP
A021 PWRGOOD B021 TRST* A104 A30* B104 A29*
A022 GND B022 RESERVED (nc) A105 GND B105 A26*
A023 TEST_25 (pu)*** B023 VCCP A106 A31* B106 VCCL2
A024 THERMTRIP* B024 RESERVED (nc) A107 A27* B107 A24*
A025 GND B025 RESERVED (nc) A108 GND B108 A28*
A026 OCRV_EN B026 VCCP A109 A22* B109 VCCL2
A027 INTR B027 TEST_VCCP
(pu)
A110 A23* B110 A20*
A028 GND B028 NMI A111 GND B111 A21*
A029 PICD0 B029 VCCP A112 A19* B112 VCCL2
A030 PREQ* B030 PICCLK A113 A18* B113 A25*
A031 GND B031 PICD1 A114 GND B114 A15*
A032 BP3* B032 VCCP A115 A16* B115 VCC_L2
A033 BMP0* B033 BP2* A116 A13* B116 A17*
A034 GND B034 RESERVED (nc) A117 GND B117 A11*
A035 BINIT* B035 VCCP A118 A14* B118 VCC_L2
A036 DEP0* B036 PRDY* A119 GND B119 A12*
Table A-25 (continued) Processor Card Connector (J7A1, J7B1, J7C1, J7D1)
Pin** Signal Pin Signal Pin Signal Pin Signal
Baseboard Connectors
007-4276-001 121
A037 VSS B037 BPM1* A120 A10* B120 VCCL2
A038 DEP1* B038 VCCP A121 A5* B121 A8*
A039 DEP3* B039 DEP2* A122 GND B122 A7*
A040 GND B040 DEP4* A123 A9* B123 VCCL2
A041 DEP5* B041 VCCP A124 A4* B124 A3*
A042 DEP6* B042 DEP7* A125 GND B125 A6*
A043 GND B043 D62* A126 RESERVED
(nc)
B126 VCCL2
A044 D61* B044 VCCP A127 BNR* B127 AERR*
A045 D55* B045 D58* A128 GND B128 REQ0*
A046 GND B046 D63* A129 BPRI* B129 VCCL2
A047 D60* B047 VCCP A130 TRDY* B130 REQ1*
A048 D53* B048 D56* A131 GND B131 REQ4*
A049 GND B049 D50* A132 DEFER* B132 VCCL2
A050 D57* B050 VCCP A133 REQ2* B133 LOCK*
A051 D46* B051 D54* A134 GND B134 DRDY*
A052 GND B052 D59* A135 REQ3* B135 VCCL2
A053 D49* B053 VCCP A136 HITM* B136 RS0*
A054 D51* B054 D48* A137 GND B137 HIT*
A055 GND B055 D52* A138 DBSY* B138 VCCL2
A056 CPU_SENSE B056 VCCP A139 RS1* B139 RS2*
A057 GND B057 L2_SENSE A140 GND B140 RP*
A058 D42* B058 VCCP A141 BR2* B141 VCCL2
A059 D45* B059 D41* A142 BR0* B142 BR3*
Table A-25 (continued) Processor Card Connector (J7A1, J7B1, J7C1, J7D1)
Pin** Signal Pin Signal Pin Signal Pin Signal
122 007-4276-001
A: Technical Reference
A060 GND B060 D47* A143 GND B143 BR1*
A061 D39* B061 VCCP A144 ADS* B144 VCCL2
A062 TEST_25 (pu)*** B062 D44* A145 AP0* B145 RSP*
A063 GND B063 D36* A146 GND B146 AP1*
A064 D43* B064 VCCP A147 VID2_CORE B147 VCCL2
A065 D37* B065 D40* A148 VID1_CORE B148 RESERVED (nc)
A066 GND B066 D34* A149 GND B149 VID3_CORE
A067 D33* B067 VCCP A150 VID4_CORE B150 VCCL2
A068 D35* B068 D38* A151 RESERVED
(nc)
B151 VID0_CORE
A069 GND B069 D32* A152 GND B152 VID0_L2
A070 D31* B070 VCCP A153 VID2_L2 B153 VCCL2
A071 D30* B071 D28* A154 VID1_L2 B154 VID4_L2
A072 GND B072 D29* A155 GND B155 VID3_L2
A073 D27* B073 VCCP A156 VTT B156 VCCL2
A074 D24* B074 D26* A157 VTT B157 VTT
A075 GND B075 D25* A158 GND B158 VTT
A076 D23* B076 VCCP A159 SA2 B159 VCCL2
A077 D21* B077 D22* A160 VCC3.3 B160 SCLK
A078 GND B078 D19* A161 GND B161 SDAT
A079 D16* B079 VCCP A162 SA1 B162 VCCL2
A080 D13* B080 D18* A163 SA0 B163 RESERVED (nc)
A081 GND B081 D20* A164 GND B164 RESERVED (nc)
Table A-25 (continued) Processor Card Connector (J7A1, J7B1, J7C1, J7D1)
Pin** Signal Pin Signal Pin Signal Pin Signal
Baseboard Connectors
007-4276-001 123
* Signal is active low.
** Pins are numbered with respect to the module edge connector. Axx signals appear on
the front (processor side) of the processor card.
***Signals that have no connection except for a pull-up resistor to 2.5 V are labeled with
the signal mnemonic followed by “(pu).”
Processor Termination, Regulation, and Power
The termination circuitry required by the Intel Pentium III Xeon processor bus (AGTL+)
signaling environment and the circuitry to set the AGTL+ reference voltage are
implemented directly on the processor cards. The baseboard provides 1.5 V AGTL+
termination power (VTT), and VRM 8.3-compliant DC-to-DC converters to provide
processor power (VCCP) at each connector.
The baseboard provides four embedded VRMs and three VRM sockets to power the
processors, which derive power from the 5 V and 12 V supplies. Each processor has a
separate VRM to power its core; however, two processors share a VRM to power their
cache.
Table A-26 shows the cable pinout assignments for the three VRM connectors.
A082 TEST_VTT (pu) B082 VCCP A165 PWR_EN0 B165 RESERVED (nc)
A083 RESERVED (nc) B083 RESERVED (nc)
Table A-26 Processor VRM Connectors (J2A2, J2B1, J2C1)
Pin Signal Type*
A1 P5VIN1 POWER
A2 P5VIN2 POWER
A3 P5VIN3 POWER
A4 P12VIN1 POWER
Table A-25 (continued) Processor Card Connector (J7A1, J7B1, J7C1, J7D1)
Pin** Signal Pin Signal Pin Signal Pin Signal
124 007-4276-001
A: Technical Reference
A5 P12VIN3 POWER
A6 P1SHARE
A7 VID0 OUT
A8 VID2 OUT
A9 VID4 OUT
A10 VCCP1 POWER
A11 VSS1 POWER
A12 VCCP2 POWER
A13 VSS2 POWER
A14 VCCP3 POWER
A15 VSS3 POWER
A16 VCCP4 POWER
A17 VSS4 POWER
A18 VCCP5 POWER
A19 VSS5 POWER
A20 VCCP6 POWER
B1 P5VIN4 POWER
B2 P5VIN5 POWER
B3 P5VIN6 POWER
B4 P12VIN2 POWER
B5 RES
B6 OUTEN OUT
B7 VID1 OUT
B8 VID3 OUT
Table A-26 (continued) Processor VRM Connectors (J2A2, J2B1, J2C1)
Pin Signal Type*
Baseboard Connectors
007-4276-001 125
*Type (in/out) is from the perspective of the baseboard.
Termination Card
You must install a termination card in any vacant processor card slot to ensure reliable
system operation.
The termination card contains AGTL+ termination circuitry, clock signal termination,
and test access port (TAP) bypassing for the vacant connector. The system does not boot
unless all slots are occupied with a processor or termination card.
Server Monitor Module Connector (J7H1)
The baseboard supports the server monitor module (SMM) feature connector. Table A-27
shows the pinout of the 26-pin baseboard connector.
B9 PWRGOOD
B10 VSS6 POWER
B11 VCCP7 POWER
B12 VSS7 POWER
B13 VCCP8 POWER
B14 VSS8 POWER
B15 VCCP9 POWER
B16 VSS9 POWER
B17 VCCP10 POWER
B18 VSS10 POWER
B19 VCCP11 POWER
B20 VSS11 POWER
Table A-26 (continued) Processor VRM Connectors (J2A2, J2B1, J2C1)
Pin Signal Type*
126 007-4276-001
A: Technical Reference
On the baseboard, pins 1, 9, 15, and 17 are connected to SMI_L, NMI, SECURE_MODE,
and CHASSIS_INTRUSION. Some server systems do not monitor these signals.
Note: The type of connector (in, out, in/out, power, ground) indicated in Table A-27 is
described from the perspective of the baseboard.
Table A-27 Server Monitor Module Connector Pinout
Pin Signal Type Description-Implementation
1 SMI_L Out System management interrupt: not supported on SMM
2 I2C_SCL In I2C clock line
3 CONP_L Out Connector present: tied to ground on the baseboard
4 Reserved Reserved pin: NC on baseboard
5 PWR_CNTL_L In Power supply on/off control: allows SMM to control
system power
6 I2C_SDA In/Out I2C serial data line
7 5VSTNDBY Out +5 V standby: monitored by SMM to determine if AC
power is applied
8 Reserved Pulled up to 5 V through 10k on baseboard
9 NMI Out Non-maskable interrupt: not supported on SMM
10 HOST_AUX Out Baseboard voltage monitored by SMM card: connected to
3.3 V
11 RESET_L In Baseboard reset signal from SMM
12 GROUND Ground Ground
13 GROUND Ground Ground
14 Key No connect on baseboard
15 SECURE_MODE Out Secure mode indication: not supported on SMM
16 GROUND Ground Ground
17 CHASSIS_INTRUSION Out Chassis intrusion indication: not supported on SMM
Baseboard Connectors
007-4276-001 127
SM Bus Connector (J9E4)
This connector allows connection to the Memory Module I2C bus on which the DIMMs
EEPROMs reside. A shorted I2C connection at the SM Bus I2C connector will prevent the
system BIOS from sizing and configuring main memory. Table A-28 shows the cable
pinout assignments for the SM bus connector.
ICMB Connector (J1D2)
The external Intelligent Chassis Management Bus (ICMB) provides external access to
ICMB devices that are within the chassis. For example, you can externally access chassis
management functions, alert logs, and post-mortem data. The ICMB connector also
18 Reserved Reserved pin: NC on baseboard
19 Reserved Reserved pin: NC on baseboard
20 GROUND Ground Ground
21 Reserved Reserved pin: NC on baseboard
22 Reserved Reserved pin: NC on baseboard
23 Reserved Reserved pin: NC on baseboard
24 Reserved Reserved pin: NC on baseboard
25 Key No connect on baseboard
26 Reserved Reserved pin: NC on baseboard
Table A-28 SM Bus Connector (J9E4)
Pin Signal Description
1 Local I2C SDA OSB4 SM bus data line
2GROUND
3 Local I2C SCL OSB4 SM bus data line
Table A-27 (continued) Server Monitor Module Connector Pinout
Pin Signal Type Description-Implementation
128 007-4276-001
A: Technical Reference
provides a mechanism for chassis power control. As an option, you can configure a
server with an ICMB adapter board to provide two SEMCONN 6-pin connectors for
daisy-chained cabling. Table A-29 shows the cable pinout assignments for the ICMB
connector.
Auxiliary I2C Connector (J9E4)
The baseboard provides a 3-pin auxiliary I2C connector for OEM access to the IPMB. This
connector is not isolated when power is off. Any devices connected must remain
powered in this state or the BMC will not work properly.
AshortedI
2C connection at the auxiliary I2C connector will prevent restoration of main
power because the BMC needs the bus to boot the server from standby power. Table A-30
shows the cable pinout assignments for the IMB connector.
Baseboard Fan Connectors (J3C1, J3A1, J4A1, J4C1)
There are four fan connectors located on the baseboard. Use these connectors are for
additional processor cooling.
Table A-29 ICMB Connector (J1D2)
Pin Signal Type Description
1 SDA signal IPMB I2C Data
2Ground power
3 SCL signal IPMB I2C Clock
45Vstandbypower
Table A-30 IMB Connector (J8F1)
Pin Signal Description
1LocalI
2CSDA BMCIMB5VSTNDBYclockline
2GROUND
3LocalI
2C SCL BMC IMB 5VSTNDBY data line
Baseboard Connectors
007-4276-001 129
The baseboard only supports monitoring a total of eight tachometer fan inputs. The front
panel connector provides connections to all eight tachometer fan inputs. The tachometer
signals from these four processor fan connectors are connected to the same tachometer
fan signals FAN_TACH(4), FAN_TACH(5), FAN_TACH(6), and FAN_TACH(7)
providedonthefrontpanelconnectorJ9E3.Therefore,makesurethatonlyone
connection is used at any given time.
Note: The type of connector (in, out, in/out, power, ground) indicated in the following
tables is described from the perspective of the baseboard.
Table A-31 describes the processor fan connector #1 (J3C1).
Table A-32 describes the processor fan connector #2 (J3A1).
Table A-31 Processor Fan Connector #1 (J3C1)
Pin Signal Type Description
1 Ground power GROUND is the power supply ground
2 12V power Power supply 12 V
3 Fan Tach Out FAN_TACH signal is connected to the BMC to monitor the
FAN speed
Table A-32 Processor Fan Connector #2 (J3A1)
Pin Signal Type Description
1 Ground power GROUND is the power supply ground
2 12V power Power supply 12 V
3 Fan Tach Out FAN_TACH signal is connected to the BMC to monitor the
FAN speed
130 007-4276-001
A: Technical Reference
TableA-33describetheprocessorfanconnector#3(J4A1).
Table A-34 describe the processor fan connector #4 (J4C1).
Internal Disk Drive LED Connection
Table A-35 shows the cable pinout assignment for the internal disk drive LED connector.
Table A-33 Processor Fan Connector #3 (J4A1)
Pin Signal Type Description
1 Ground Power GROUND is the power supply ground
2 12V Power Power supply 12 V
3 Fan Tach Out FAN_TACH signal is connected to the BMC to monitor the
FAN speed
Table A-34 Processor Fan Connector #4 (J4C1)
Pin Signal Type Description
1 Ground Power GROUND is the power supply ground
2 12V Power Power supply 12 V
3 Fan Tach Out FAN_TACH signal is connected to the BMC to monitor the
FAN speed
Table A-35 Internal Disk Drive LED Connector
Pin Signal Description
1NC Noconnect
2 Activity signal 5 V, high true activity signal
3 Activity signal Same as pin 2 (Shorted to pin 2)
4NC Noconnect
Baseboard Jumpers
007-4276-001 131
Baseboard Jumpers
One 15-pin, one 11-pin, and one 3-pin single inline header provide a total of eight 3-pin
jumper blocks that control various configuration options. The jumper locations are
shown in Figure A-2. The shaded areas show default jumper placement for each
configurable option.
Figure A-2 Baseboard Configuration Jumpers
A. PCI Add-in slots
B. Processors
C. Configuration jumpers
1 2 3 5 6 7 9 10 11 13 14 15
J9F2
A
B
C
JP1
JP2
JP3
JP4
132 007-4276-001
A: Technical Reference
Table A-36 identifies jumpers JP1, JP2, JP3, and JP4.
Table A-37 describes the jumper settings for jumpers JP2, JP3, and JP4.
Table A-36 Configuration Jumper Settings
Callout Name State Location
JP1 BMC boot block write
Enable
Disable
Enable
13 - 14
14 - 15
JP2 BIOS recovery boot Disable
Enable
9-10
10 - 11
JP3 Password clear Protect
Erase
5-6
6-7
JP4 CMOS clear BMC control
Force erase
1-2
2-3
Table A-37 Configuration of Jumpers
Option Description
CMOS If pins 1 and 2 of J9F2 are jumpered (default), NVRAM contents are preserved
through system reset unless the user clears them through the front panel (by
pressing the power and reset buttons at the same time for four seconds). If pins 2
and 3 of J9F2 are jumpered, NVRAM contents are set to manufacturing default
during system reset. If the jumper is removed, NVRAM contents are preserved
through system reset.
Password If pins 5 and 6 of J9F2 are jumpered (default), the current system password is
maintained during system reset. If pins 6 and 7 are jumpered, the password is
cleared on reset.
BIOS
recovery
If pins 9 and 10 of J9F2 are jumpered (default), BIOS jumps to a protected area of the
flash part containing the “Recovery BIOS.” If the normal BIOS gets corrupted, and
you are unable to reload a fresh copy from the floppy disk, install the jumper
between pins 10 and 11 of J9F2, which enables the system to boot from the Recovery
BIOS. This code expects a fresh copy of the normal BIOS to be located on a floppy
disk in the floppy drive.
Changing Jumper Settings
007-4276-001 133
Changing Jumper Settings
Follow the instructions in this section to change the settings for the CMOS clear jumper
(JP4), the password clear jumper (JP3), and the recovery boot jumper (JP2).
Observe the following safety and ESD precautions before changing jumper settings:
Caution: ESD can damage disk drives, boards, and other parts. We recommend that you
do all procedures in this chapter only at an ESD-protected workstation. If one is not
available, provide some ESD protection by wearing an antistatic wrist strap attached to
chassis ground—any unpainted metal surface—on your system when handling parts.
Caution: Always handle boards carefully. They can be extremely sensitive to ESD. Hold
boards only by their edges. After removing a board from its protective wrapper or from
the system, place it component-side upon a grounded, static-free surface. If you place the
baseboard on a conductive surface, the battery leads may short out. If they do, this will
result in a loss of CMOS data and will drain the battery. Use a conductive foam pad if
available but not the board wrapper. Do not slide the board over any surface.
Caution: A jumper is a small, plastic-encased conductor that slips over two jumper pins.
Newer jumpers have a small tab on top that you can grip with your fingertips or with a
pair of fine, needle-nosed pliers. If your jumpers do not have such a tab, take care when
using needle-nosed pliers to remove or install a jumper; grip the narrow sides of the
jumper with the pliers. Never grip the wide sides because this can damage the contacts
inside the jumper, causing intermittent problems with the function controlled by that
jumper. Take care to gently grip, but not squeeze, with the pliers or other tool you use to
remove a jumper; you might bend or break the stake pins on the board.
CMOS Clear Jumper
The jumper at pins 1, 2, and 3 controls whether settings stored in CMOS nonvolatile
memory (NVRAM) are retained during a system reset. The jumper is used to restore the
system's CMOS and RTC to default values, as follows:
!
!
!
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There are two methods to restore the default values.
Method 1
1. Hold down the system's reset button down for five seconds.
2. While continuing to hold down the system's reset button, press the power button.
3. Release both the reset and power buttons at the same time.
Method 2
1. Observe the safety and ESD precautions at the beginning of this section.
2. Turn off all connected peripherals, turn off system power, and disconnect all AC
power cords.
3. If the baseboard is installed in a system, remove access covers so that you have
access to the baseboard.
4. Remove the memory module. See “Removing the Memory Module” on page 55.
5. Locate the configuration jumpers at the edge of the baseboard next to the memory
expansion card connector (MECC). See Figure A-2 on page 131 for the location of
the configuration jumpers.
6. Move the CMOS jumper from pins 1 and 2 to pins 2 and 3 (the Clear CMOS
memory position).
7. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
8. You may need to repeat these steps to move the jumper back to its original setting,
depending on the jumper function.
9. WaitforPOSTtocompleteandforthemessagesNVRAM cleared by jumper and
Press F1 to resume, Press F2 to Setup to be displayed. This
automatically reprograms CMOS and RTC to their default settings, except for the
password.
10. Enter Setup and make any changes necessary (for example, changing the boot
device). Press F10 to save the new Setup configuration and exit Setup.
11. Turn off the system, and disconnect all AC power cords from the system.
12. Move the jumper from pins 2 and 3 back to pins 1 and 2 (the Protect CMOS memory
position).
Changing Jumper Settings
007-4276-001 135
13. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
14. Run BIOS Setup or the SSU to verify the correct settings. See Chapter 3 in the SGI
1450 Server User’s Guide.
Password Clear Jumper
The jumper at pins 5, 6, and 7 controls whether a stored password is retained or cleared
during a system reset.
Follow these steps to clear the current password and then enter a new one:
1. Observe the safety and ESD precautions at the beginning of this section.
2. Turn off all connected peripherals, turn off system power, and disconnect all AC
power cords.
3. If the baseboard is installed in a system, remove access covers so that you have
access to the baseboard.
4. Remove the memory module. See “Removing the Memory Module” on page 55.
5. Locate the configuration jumpers at the edge of the baseboard next to the memory
expansion card connector (MECC). See Figure A-2 on page 131 for the location of
the configuration jumpers.
6. Move the password jumper from pins 5 and 6 to pins 6 and 7.
7. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
8. Wait for POST to complete and for the message Press F1 to resume, Press
F2 to Setup to be displayed.
9. Turn off the system, and disconnect all AC power cords from the system.
10. Move the jumper from pins 6 and 7 back to pins 5 and 6.
11. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
12. Run BIOS Setup or the SSU to specify a new password. See Chapter 3 in the SGI
1450 Server User’s Guide.
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Recovery Boot Jumper
The jumper at pins 9, 10, and 11 controls whether the system attempts to boot using the
BIOS programmed in flash memory.
Follow these steps to disable recovery booting:
1. Observe the safety and ESD precautions at the beginning of this section.
2. Turn off all connected peripherals, turn off system power, and disconnect all AC
power cords.
3. If the baseboard is installed in a system, remove access covers so that you have
access to the baseboard.
4. Remove the memory module. See “Removing the Memory Module” on page 55.
5. Locate the configuration jumpers at the edge of the baseboard next to the memory
expansion card connector (MECC). See Figure A-2 on page 131 for the location of
the configuration jumpers.
6. Move the recovery boot jumper from pins 9 and 10 to pins 10 and 11.
7. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
8. Turn on the system, and insert the Flash Memory Update Utility diskette in drive A.
After the system boots, the recovery process starts. This takes about three minutes.
When the recovery process completes, the speaker emits two beeps.
While in the recovery mode, there is no screen display on the monitor. The keyboard is
disabled as the system automatically recovers the BIOS. Table A-38 lists the beep code
messages.
Table A-38 Beep Codes
Beep Code Message
2 Successful completion, no errors.
4 The system could not boot from the diskette. The diskette may not be
bootable.
Continuous series
of low beeps
The wrong BIOS recovery files are being used and/or the flash memory
jumper is in the wrong position.
Interrupts
007-4276-001 137
9. Wait for POST to complete and for the message Press F1 to resume, Press
F2 to Setup to be displayed.
10. Turn off the system, and disconnect all AC power cords from the system.
11. Move the jumper from pins 6 and 7 back to pins 5 and 6.
12. If the baseboard is installed in a system, reinstall the access covers, connect the
power cords, and turn on the system for the change to take effect.
13. After running the special recovery mode, run the SSU to specify a new password.
See Chapter 3 in the SGI 1450 Server User’s Guide.
Interrupts
Table A-39 recommends the logical interrupt mapping of interrupt sources; it reflects a
typical configuration, but a user can change these interrupts. Use the information to
determine how to program each interrupt. The actual interrupt map is defined using
configuration registers in the OSB4 I/O controller. I/O redirection registers in the I/O
APIC are provided for each interrupt signal; the signals define hardware interrupt signal
characteristics for APIC messages sent to local epics.
Note: If you plan to disable the IDE controller to reuse the interrupt for that controller,
you must physically unplug the IDE cable from the board connector (IDE0) if a cable is
present. Simply disabling the drive by configuring the SSU option does not make the
interrupt available.
Table A-39 Interrupt Definitions
ISA Interrupt Description
INTR Processor interrupt
NMI NMI to processor
IRQ1 Keyboard interrupt
IRQ3 Serial port A or B interrupt from SIO device, user-configurable
IRQ4 Serial port A or B interrupt from SIO device, user-configurable
IRQ5 Parallel port
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Video Modes
The RAGE IIC chip supports all standard IBM® VGA modes. Table A-40 shows all the
modes that this implementation supports, including the number of colors, resolution,
and refresh rates.
IRQ6 Floppy disk
IRQ7 Parallel port
IRQ8_L Active low RTC interrupt
IRQ9
IRQ10
IRQ11
IRQ12 Mouse interrupt
IRQ14 Compatibility IDE interrupt from primary channel IDE devices 0 and 1
IRQ15 Reserved
SMI System Management Interrupt. General purpose indicator is sourced by the
OSB4 and BMC to the processors
SCI
Table A-40 Standard VGA Modes
Resolution Refresh Rate (Hz) Colors
640x480 200 256
800x600 200 256
1024x768 150 256
1152x864 120 256
1280x1024 100 256
Table A-39 (continued) Interrupt Definitions
ISA Interrupt Description
Video Modes
007-4276-001 139
1600x1200 76 256
640x480 200 65K
800x600 200 65K
1024x768 150 65K
1152x864 120 65K
1280x1024 100 65K
1600x1200 76 65K
640x480 200 16.7M
800x600 160 16.7M
Table A-40 (continued) Standard VGA Modes
Resolution Refresh Rate (Hz) Colors
007-4276-001 141
Appendix B
B. Physical Environment Specifications
Table B-1 details the environmental specifications for the SGI 1450 server.
Table B-1 Environmental Specifications
Temperature:
Non-operating
Operating
-40° to 70 °C (-104° to 158 °F)
5° to 35 °C (41° to 95 °F)
Altitude 5,000 ft. max
Humidity 95% relative humidity (non condensing) at 25 °C (77 °F) to
30 °C (86 °F)
Shock:
Operating
Packaged
2.0 g, 11 msec, 1/2 sine, 100 pulses in each direction
Trapezoidal, 30 g, 170 inches/sec. delta V, 3 drops in each
directiononeachofthethreeaxes
Acoustic noise < 55 dBA with three power supplies at 28 °C +/- 2 °C
Electrostatic discharge
(ESD)
Tested to 15 kilovolts (kV) air discharge and up to 8 kV
contact discharge
System AC input power:
100-120 V~
200-240 V~
6A,50/60Hz
4A,50/60Hz
007-4276-001 143
Index
A
AC power, LED state status,14
add-in board
installing 32-bit, 33 MHz half-length PCI board,66
installing 64-bit, 66/33 MHz hot-plug PCI board,
69
removing 32-bit, 33 MHz half-length PCI board,65
removing 64-bit, 66/33 MHz hot-plug PCI board,
67
address
base memory,54
extended memory,54
B
base memory,54
D
DC power cables,14
DIMM (memory)
bank population,54
installing,56
removing,56
E
extended memory,54
F
fan LED state status,16
H
hard drive backplane
boardset,11
requirements,10
hard drive, LED state status,11
I
ICMB card
description,70
installing,71
removing,73
ICMB connectors,94
installing
32-bit, 33 MHz half-length PCI board,66
64-bit, 66/33 MHz hot-plug PCI board,69
baseboard,31
DIMMs,56
drive in media bay,46
fan board assembly,40
fans,42
front cover,24
hard drive bay,44
ICMB card,71
memory module,55
144 007-4276-001
Index
memory retention bar,27
power subsystem bay,37
power supply module,35
processor,59
processor handles,60
processor heatsink,60
processor retention mechanism,60
top cover,25
VRMs,62
interrupt, mapping,137
J
jumpers
changing settings,133
configuration,132
location on baseboard,131
L
LED state status
AC power,14
fans,16
hard drive,11
M
memory
addresses,53
bank population,54
base,54
capacity,54
extended,54
installing DIMMs,56
installing memory module,55
minimum configuration,53
removing DIMMs,56
removing memory module,55
P
peripheral adapter boards,100
processor
installing,59
installing handles,60
installing heatsink,60
installing retention mechanism,60
removing,59
removing retention mechanism,59
termination card,125
R
removing
32-bit, 33 MHz half-length PCI board,65
64-bit, 66/33 MHz hot-plug PCI board,67
baseboard,28
DIMMs,56
drive from media bay,45
fan board assembly,39
fans,42
front cover,23
hard drive bay,43
ICMB card,73
memory module,55
memory retention bar,26
power subsystem bay,36
power supply module,35
processor,59
processor retention mechanism,59
top cover,25
VRMs,62
replacing
drive in device bay,46
fan board,40
resetting, commands,75
