Acer Altos 21000 User Guide

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System Guide

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Copyright  1999 by A c er Incorporated. All rights reserved. No part of this publication may be reproduced, transmit ted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of t his company.

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This company makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any particul ar pur pose. Any sof tware descri bed in t his m anual i s sold or licensed "as is". Should the programs prove defective following their purchase, t he buyer (and not thi s company, i ts distri butor, or its dealer) assumes the enti re cost of all necessary serv i ci ng, repai r, and any incident al or consequenti al dam ages resulti ng f rom any defect i n the software. F urther, this com pany reserves the ri ght to rev ise this publication and to make changes from time to time in the contents hereof without obligation to notify any person of such revision or changes.

All brand and product names mentioned in this manual are trademarks and/or registered trademarks of their respective companies.

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1. Read these instructions carefully. Save these instructions for future reference.

2. Follow all warnings and instructions marked on the product.

3. Unplug this product fr om the wal l outl et bef ore cleani ng. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

4. Do not use this product near water.

5. Do not place this product on an unstable cart, stand, or table. The product may fal l, causing serious dam age to the product.

6. Slots and openings in the cabinet and the back or bottom are provided for ventilation; to ensure reliable operation of the product and to prot ect it f rom over heating, these openings m ust not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should never be placed near or over a r adiator or heat register , or i n a buil t-i n i nstallat ion unless proper v entilation is provided.

7. This product should be oper ated from the type of power indicated on the marki ng label. If you are not sure of the type of power available, c onsul t your dealer or local power company.

8. This product is equipped with a 3-wire grounding-type plug, a plug hav ing a thir d (grounding) pin. This plug will only fit into a grounding-type power outlet. This i s a safety f eature. If you are unable to insert the plug into the outlet, contact your electri cian to replace your obsolete out l et. Do not def eat the pur pose of t he grounding-type plug.

9. Do not allow anythi ng to rest on the power cord. Do not locate this product where persons will walk on the cord.

iii

10. If an ex t ension cord i s used with thi s product, m ake sure t hat t he total amper e rating of the equipment plugged into the ex tension cord does not exceed the extension cord ampere rating. Also, make sure that the total rating of all products plugged into the wall outlet does not exceed 15 am per es.

11. Never push objects of any kind int o this product thr ough cabinet slots as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill liqui d of any kind on the product.

12. Do not attempt to service this product yourself, as opening or remov i ng cov er s may ex pose you to dangerous v ol t age point s or other risks. Refer all servicing to qualified service personnel.

13. Unplug this product from the wall outlet and refer servicing to qualified service personnel under t he followi ng c onditions:

a. When the power cord or plug is damaged or fr ay ed b. If liqui d has been spil led into the pr oduc t c. If t he pr oduc t has been exposed to rain or water d. If the pr oduct does not oper ate norm al l y when t he oper ati ng

instructions are followed. Adjust only those controls that are covered by the operating instructions since improper adjustment of other controls m ay result in dam age and will often require extensive work by a qualified technician to restore the product to normal c ondition.

e. If the product has been dropped or the cabinet has been

damaged

f. If the product exhibits a distinct change in performance,

indicat ing a need for service

14. Replace battery with the sam e type as the product's battery we recomm end. Use of anot her batt ery m ay present a ri sk of f i re or explosion. Refer battery replacement to a qualified serviceman.

15. War ning! Batt ery may expl ode if not handl ed properly. Do not recharge, disassemble or dispose of in fire. Keep away from children and dispose of used battery promptly.

16. Use only the proper ty pe of power supply cord set (prov ided in your keyboard/manual accessories box) for thi s uni t. It should be a detachable type: UL listed/CSA certified, type SJT, rated 6A 125V minimum, VDE approved or its equivalent. Maximum length is 15 feet (4.6 meters).

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Note:

This equipment has been tested and found to comply with the limits for a C lass B digital device, pursua nt to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. 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. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the se paration be tween the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4. Consult the dealer or an experienced radio/television technician for help.

Notice 1:

The changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Notice 2:

Shielded inte rface ca bles, if any, must be used in order to comply with the emission limits.

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Getting Started

This system gui de aims to giv e you al l the necessary inform ation to enable you to set up and operat e the AcerAlt os 21000 system .

Manual St ructure

This system gui de c onsi sts of fi ve chapter s and an i ndex.

Chapter 1 Getting Started

This chapter hel ps you get start ed. I t illustrates how to prepare the system f or instal lati on, connec t the cabl es, and start up the syste m .

Chapter 2 System Housing

This chapter describes the assembly and disassembly of the system housing. It also shows you how to install the main board, power supply, fan module, storage devices, and other housing components.

Chapter 3 System Boards

This chapter describes the main board, t he memor y board, the SCSI backpl ane board, and the LCD display module. Al so, It introduces the system’s unique features and powerful architecture. It includes a brief introduction of the new generation Int el Penti um I I Xeon processor that forms the heart of the Ac er A ltos 21000 system.

Chapter 4 BIOS Utility

This chapter explains the BIOS parameter functions. It tells how to configur e the system by setti ng the parameters.

vii

Chapter 5 Diagnostics and Utilities

This chapter describes the software utilities that enhance the system’s operation and remote operation functions.

Appendix A LCD Module Event Log List

This chapter shows lists of error messages that can be displayed in the LCD display m odule.

Conventions

The following are the conventi ons used in t his manual:

Text entered by user

Option Items

Represents text input by the user. Represents options that you can

select on the screen.

, , , etc. Represent the actual k ey s that you

have t o pr ess on the keyboar d.

NOTE

Gives bits and pieces of additional infor mation related to the cur r ent topic.

CAUTION

Gives precautionary measures to avoid possible hardware or software problems.

IMPORTANT

Reminds you to take specific actions relevant to the accompl ishment of procedures.

viii

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Chapter 1 Getting Started

1.1 Preinstallation Requirements............................................... 1-1

1.1.1 Selecting a Site ...................................................1-1

1.1.2 Checki ng the Package Contents ..........................1-2

1.1.3 Preparing the System Unit...................................1-3

1.2 Basic Connections...............................................................1-4

1.2.1 Connecting a Keyboard........................................1-4

1.2.2 Connecting a Mouse............................................ 1-5

1.2.3 Connecting a VGA Monitor.................................. 1-6

1.3 System Startup................................................................... 1-7

1.4 Power-on Problems............................................................. 1-8

Chapter 2 System Housing

2.1 Ext er nal and Internal S tructure............................................2-2

2.1.1 Front P anel..........................................................2-2

2.1.2 Rear Panel ..........................................................2-4

2.1.3 LCD Display M odule............................................2-6

2.1.4 Inter nal Components.......................................... 2-12

2.2 Opening t he Housi ng P anels............................................. 2-14

2.2.1 Removing the Left and Right Panels.................. 2-14

2.2.2 Openi ng the Front Panel Door ........................... 2-15

2.3 Installing and Removing Storage Devices......................... 2-17

2.3.1 Instal ling and Removing a 3.5-inch Storage

Device............................................................... 2-17

2.3.2 Instal ling and Removing a 5.25-inch

Storage Device.................................................. 2-20

2.4 Installing a Hot-swappable SCSI Dr ive.............................. 2-23

2.5 Installing and Removing a Hot - swappable Redundant

Power Supply Module ....................................................... 2-25

2.6 Installing and Removing a Hot - swappable Redundant

Housing Fan ..................................................................... 2-29

2.7 Installing an Expansi on B oar d ...........................................2-32

2.8 Removing and Install i ng the Thermal Air Guide................ 2-34

2.8.1 Removing the Thermal Air Guide....................... 2-34

2.8.2 Reinstalling the Thermal Air Guide.................... 2-35

2.9 Cable Connections............................................................ 2-37

Chapter 3 System Boards

3.1 Main Board .........................................................................3-1

3.1.1 Layout .................................................................3-3

3.1.2 Jum per s and Connect or s..................................... 3-4

3.1.3 Instal ling and Removing an Intel Pentium II

Xeon CPU............................................................3-7

3.1.4 Instal ling and Removing the Termi nation

Board.................................................................3-10

3.1.5 Instal ling and Removing a V RM ( V oltage

Regulator Module)............................................. 3-12

3.2 Memory Board.................................................................. 3-14

3.2.1 Layout ...............................................................3-14

3.2.2 Mem or y Configurat ions...................................... 3-14

3.2.3 Removing and Installing the Memory Board.......3-15

3.2.4 Instal ling and Removing a DIMM....................... 3-17

3.3 SCSI Back plane Board...................................................... 3-18

3.3.1 Features............................................................ 3-18

3.3.2 Layout ...............................................................3-19

3.3.3 Hard Disk ID Switch Settings............................. 3-20

3.3.4 Dual Channel Configur ation............................... 3-21

3.4 LCD Display Module.......................................................... 3-22

Chapter 4 BIOS Utility

4.1 Entering Setup.................................................................... 4-2

4.2 System Information.............................................................4-3

4.2.1 Processor ............................................................4-4

4.2.2 Processor Speed .................................................4-4

4.2.3 Bus Frequency..................................................... 4-5

4.2.4 L1 Cache.............................................................4-5

4.2.5 L2 Cache.............................................................4-5

4.2.6 Fl oppy Dr ive A..................................................... 4-5

4.2.7 Fl oppy Dr ive B..................................................... 4-5

4.2.8 IDE Pr imary Channel Master ...............................4-5

4.2.9 IDE Pr imary Channel Slave................................. 4-5

4.2.10 Total Memory ....................................................4-6

4.2.11 Serial Port 1.......................................................4-6

4.2.12 Serial Port 2.......................................................4-6

4.2.13 Parallel Port....................................................... 4-6

4.2.14 Pointing Device .................................................4-6

4.2.15 Memory Parity Mode.......................................... 4-6

4.2.16 Onboard USB .................................................... 4-7

4.3 Product I nformation............................................................. 4-8

4.3.1 Product Name......................................................4-8

4.3.2 System S/N ......................................................... 4-8

4.3.3 Main Board ID......................................................4-9

4.3.4 Main Board S/N................................................... 4-9

4.3.5 System BIOS Version.......................................... 4-9

4.3.6 System BIOS ID.................................................. 4-9

4.3.7 BIOS Release Date .............................................4-9

4.4 Disk Drives........................................................................4-10

4.4.1 Fl oppy Dr ives .................................................... 4-12

4.4.2 IDE Drives......................................................... 4-12

4.5 Power Management ..........................................................4-16

4.5.1 Power Management Mode................................. 4-16

4.5.2 ACPI BIOS ........................................................ 4-17

4.6 Startup Configurat ion........................................................ 4-18

4.6.1 Fast POST Mode............................................... 4-18

4.6.2 Silent Boot.........................................................4-19

4.6.3 Num Lock After Boot......................................... 4-19

4.6.4 Memory Test .....................................................4-19

4.6.5 Initialize SCSI Before IDE..................................4-19

4.6.6 System Boot Drive............................................. 4-20

4.6.7 Boot From IDE CD-ROM ...................................4-20

4.6.8 Single Processor MP Table................................ 4-20

4.6.9 MP Table Compliant.......................................... 4-21

4.6.10 CPU Clock Ratio.............................................. 4-21

4.7 Advanced Confi gur ation.................................................... 4-22

4.7.1 Onboard Devices Configuration......................... 4-23

4.7.2 PnP/P CI System Configuration.......................... 4-29

4.7.3 Mem or y /Cache Confi gur ation ............................ 4-32

4.7.4 Non-PnP I S A Devic e Configurat ion ................... 4-33

4.7.5 System Event Configur ation ..............................4-36

xii

4.8 System Security Setup...................................................... 4-42

4.8.1 Disk Drive Cont r ol.............................................. 4-42

4.8.2 Setup Password.................................................4-43

4.8.3 Power-on Password........................................... 4-47

4.9 Date and Ti me ..................................................................4-48

4.9.1 Date................................................................... 4-49

4.9.2 Time..................................................................4-49

4.10 Remote Diagnostic Configurati on.................................... 4-50

4.11 Load Setup Default Settings............................................ 4-51

4.12 Abort Set tings Change ....................................................4-52

Chapter 5 Diagnostics and Utilities

5.1 Advanced Server Manager.................................................. 5-1

5.2 Remote Diagnostic Manager ............................................... 5-3

Appendix A LCD Module Event Log List

xiii

Introduction

The AcerAltos 21000 is a powerful 64-bit quad-processor system loaded with a host of new and innovat i v e features. The system of fers a new standard for flexible productivity ideal for local or wide area networks and multi-user server envir onments.

Intel Pentium II Xeon Processor with the Intel 450NX Chipset

The Pentium II Xeon processor, like its predecessors, the Pentium Pro and Pentium II processors, implements a Dynamic Execution micro-architecture - a unique combination of multiple branch prediction, data f low analysis, and speculative execution. Thi s means that the Pentium II Xeon can deliver higher performance than the Pentium Pro processor while maintaining binary compatibility with all previous Intel Architecture processors.

Also, the Pentium II Xeon processor is avail able in 512K, 1MB, and 2MB L2 cache options with the introduction of the Slot 2 socket. Unlike Sl ot 1 Pentium IIs, which access the L2 at half the pr ocessor speed, the Slot 2 accesses the L2 at f ull processor clock speed. An addition t o the Pentium II Xeon processor is the Int el 450NX chipset, for servers with four or more processors, which supports a 100MHz front-side bus, USB (four ports), a south bridge to the ISA bus, provi des up to 8GB of mem ory support and m ult iple 32- bit and 64-bi t PCI buses.

In addition to meeti ng the mission-critical and fast system response tim e requirements of enterprise serv ers, the AcerAl tos 21000 is fault tolerant and capable of preventing faults from occurring. It also demonstrates graceful performance scalability when the system confi gur ation is expanded.

Introduction xv

System Architecture

Xeon-CPU1 512K/1M/2M Cache

450NX

800MB

MIOC

RCGs + MUXs

1234567

9101112131415

2/4 Way Interleave ECC Memory

Xeon-CPU2 512K/1M/2M Cache

64bit @ 100MHz GTL

F16 Bus 400MB/s

32 bit PCI Slot * 3

Xeon-CPU3 512K/1M/2M Cache

Deschute FSB 800MB/s

133MB/s

PCI Bus

PIIX4e

CD-ROM

ISA

BMIDE HDD

Slot*1

USB

I/O

S I/O

BIOS

APIC

KBC

I/O

PCI Expander

Bridge

VGA

A.S.M. R.D.M.

Xeon-CPU4 512K/1M/2M Cache

133MB/s

PCI Bus

bit

PCI

Slot * 4

LAN

Dual Ultra2

The system inc ludes a m ai n and m em ory subsystems with four Slot 2 processors and voltage regulators for the processors. The memory subsystem runs in 100 MHz ti mi ng and has a max im um siz e of up to 4GB.

Six PCI and 1 PCI/ISA shared slots are also incorporated for fast expandable I/O capabilities.

There are two LVD SCSI (Ultra-2) channels for high performance storage devi ces and one Narrow SCSI channel f or backup ( i.e., tape drives) or CD-ROM devices.

A high-speed 10/100Mbi t Ethernet controll er and a PCI VGA dev ice are also provided.

For more information about the main board see secti on 3.1.

xvi AcerAltos 21000 System Guide

Server Management

The system comes with the ASM Pro f eature that m onitors voltage stability and CPU temperature, prevents data loss by prompt ECC memory error reporting, maximizes system resources by indicating the PCI bus utilization, and promotes eff i ci ency by m i ni m i zi ng system downtime.

A feature related to ASM Pro is Remote Diagnostic Management (RDM) that permits system diagnosis from a remote site through a modem. RDM facilitates the fixing of detected problems, changing system conf igurations or reboot ing in the event of system fai lure.

Hot-swappable Redundant Power Supply Subsystem

The system comes with a power backplane that holds up to three 430watt power supply modules. The power subsystem supports a redundant conf iguration such t hat even i f one power supply fail s, the remaining two continue to work t ogether to supply 860-watt power to a full y-confi gured system . You can also replace a faul ty power supply module without opening the system housing or shutting down the system. See section 2.5 for more information.

Hot-swappable Redundant Housing Fan

The system comes with four housing f ans that v entilate the system housing. In the event t hat any one of the fans f ails to operate, you can simpl y replace it without shutti ng down the system. See secti on

2.6 for more information.

Security

The system housing comes with mechanical security locks on the front panel to prevent unauthori z ed ac c ess to the internal c omponents and system use. Also, a microswitch l ocated on the left side of the housing panel warns you of i ntrusion.

Introduction xvii

The system BIOS protec ts the CMO S dat a and other system sof tware with a power-on password, keyboard password, setup control, disk drive control, and monit or c ontrol.

xviii AcerAltos 21000 System Guide

Chapter 1 Getting Started

This chapter tells how to install and set up the system. It gives instructions on how to select a site for the system, pr epar e the system for use, connect basic peripherals, and start up the system.

1.1 Preinstallation Requirements

1.1.1 Selecting a Site

Before unpacki ng and installing t he system, select a suit able site for the system f or max im um eff i ciency. The system i s suitable t o set up in an office environment.

Consider the f ollowing f ac tors when choosing a site for t he system:

•

Near a grounded power outlet

•

Clean and dust-f r ee

•

Sturdy surf ac e free f r om v ibration

•

Well-ventilated and away from sources of heat

•

Secluded from electromagnetic fields produced by electrical devices such as air conditi oner s, r adio and TV transm itters, etc.

Getting Started 1-1

1.1.2 Checking the Package Contents

Check the f ollowing it ems from the package:

•

AcerAlt os 21000 System

•

AcerAlt os 21000 System Guide

•

CD-ROM Driver Kits

•

System keys (hung inside the fr ont panel door)

If any of the above items are7 damaged or missing, contact your dealer immediately.

Save the boxes and packing materials for future use.

1-2 AcerAltos 21000 System Guide

1.1.3 Preparing the System Unit

Do the following to begin setting up the system:

1. Unlock the front wheels and mov e the system to your desired site.

The system housing design allows for easy transport in spi te of its size. I t comes with four wheels that facilitate short-distance transits. The t wo f ront wheels each include a lev er to l ock the wheels after you have positioned the system into place.

Front Wheel Lever

Unlock

Lock

2. After mov ing, lock the wheels by pressing down the levers.

Make sure to unlock the wheels w hen you want to move the system again.

3. Connect the system power cabl e into the power supply modul es on the rear panel. S ee sect ion 2.5.

Getting Started 1-3

1.2 Basic Connections

The system unit, keyboar d, mouse, and monitor constitute the basic system. Before connecting any other peripherals, connect these peripherals first to t est if the basi c system is running properly.

1.2.1 Connecting a Keyboard

1-4 AcerAltos 21000 System Guide

1.2.2 Connecting a Mouse

Getting Started 1-5

1.2.3 Connecting a VGA Monitor

1-6 AcerAltos 21000 System Guide

1.3 System Startup

After making sure that you have set up the system properly and connected all the required cables, you may now apply power to the syste m.

Turning On the System Power

To power on the system, press the power switch on the front panel (see section 2.1.1). The system starts up and displays a welcome message. After that , a seri es of power-on self-test (PO ST ) m essages appear on the LCD display screen. The PO ST messages indicate i f the system is runni ng well or not. See Appendi x A for a list of LCD messages.

If the system does not turn on or boot after pressing the power switch, go to the next section for the possible causes of the boot failure.

Aside from the self-t est m essages, you can determ i ne i f the system i s in good condit ion by checking if the followi ng oc c ur r ed:

•

Power indicator LE D on the front bez el light s up (green)

•

Power, Num Lock, and Caps Lock LED indicators on the keyboard li ght up

•

Power supply power LED locat ed at t he back of the system l i ghts up (green)

Getting Started 1-7

1.4 Power-on Problems

If t he system does not boot af ter you have applied power, check t he following fact or s that might have caused the boot failur e.

The pointi ng symbol ( ☛ ) indi cates a possible cause of the pr oblem . The check mark ( ✔ ) t ells you how to correct the problem.

The external power cable may be loo sely connected .

☛

Check the power cable connect ion from the power source to the

✔

power socket on the rear panel. Make sure that each cable is properly connected to each power supply.

No power comes from the grounded power outlet.

☛

Have an electrician check your power outl et.

✔

Loose or improperly connected i nternal power cables.

☛

Refer to section 2.5.1 for the cable connections and check the

✔

internal cable connections. If you are not confident to perform this step, ask a qualified technician to help you.

Make sure all power cords are disconnected from the electrical outlet before performing this task.

If you have gone through the preceding act ions and the system still fails t o boot, ask your dealer or a qualified technician f or as s is tance.

1-8 AcerAltos 21000 System Guide

Chapter 2 System Housing

The system housing is a heavy-duty steel chassis in a twin-tower design. The spacious housing boasts high expansion capability and flex ible configurati on. It can be converted to fit into a rack mount cabinet by using t he Rack M ount Ki t . F or m ore i nf orm at ion about t he rack mount k it, please refer to your dealer.

System Housing 2-1

2.1 External and Internal Structure

2.1.1 Front Panel

The system front panel is divided into two sections. The left front panel consists of the diskett e/CD- ROM/ tape dr ive bays, power switch, LED indicators, and LCD display screen.

The right part contains the hot-swappable SCSI hard disk driv e bays with 8 drive trays for SCSI dri ves.

One pair of system keys are hung inside the front panel door. A dditional duplicate keys can be found at the back of t he system.

7 8 9

2-2 AcerAltos 21000 System Guide

11 12 13

# Item Description

1 LCD Display Screen Indicates boot status as well as any

BIOS check point errors encountered upon system initialization. Refer to section 2.1.3 for more information.

2 3.5-inch Diskette

Drive

3 CD-ROM Dr ive Also a SCSI CD-ROM dr ive comes

4 5.25-inch Drive Bays Two empty 5.25-inch dri ve bays all ow

5 Ventilation Exhausts heat built-up inside the

6 SCSI HDD Bays Eight empty SCSI HDD ba y s a llow

7 Power Switch The power switch turns the system on. 8 System Power LED Lights up (green) when the power is

9 System HDD Ac c ess

LED

10 RDM Active LED Lights up (yellow) when an error

11 SCSI HDD Po wer

Status

12 SCSI HDD Bu s y Lights up when the HDD is c u rrently

13 SCSI HDD Failure Lights up (or ange) when the HDD

A 3.5-inch diskette drive comes with the basic system.

with the basic system.

installat i on of additional devices.

housing.

installat ion of hot-swap SCSI drives.

on. This also denotes that the system is running on a good supply of AC power.

Lights up (green) when at least one of the hard disks is currently accessing.

condition occurs i n t he system. Light s u p ( g reen) when the HDD is

connected and ready to go.

accessing.

installed on the backplane board is bad.

System Housing 2-3

2.1.2 Rear Panel

The rear panel includes the system fan, the connectors for the keyboard, mouse, VGA moni tor, printer, and serial devices, the slot openings for expansion boards, and the power supply.

4 5

12 13

14 15

PS/2 keyboard port Connects to PS/2 keyboards.

Video port Connects to CRT monitors.

PS/2 mouse port Connects to the PS/2 mouse.

Item Description

2-4 AcerAltos 21000 System Guide

Parallel port Connects to parallel devices (e.g.,

Item Description

printer).

USB ports Connects to USB devices.

LAN port Connects to the network cable.

COM 2 port Connects to serial devices (e.g., serial

mouse).

Hot-swap redundant fan fail LED 2

COM 1 port Connects to serial devices (e.g., serial

Lights up (green) when the hot-swap redundant fan is working properly.

mouse).

Hot-swap redundant fan fail LED 1

Hot-swappable redundant Power Supply Modules

Power supply power LED

Power supply fan fail LED

Power cable

Lights up (green) when the hot-swap redundant fan is working properly.

Removable and installable even when the system is operating. See section

2.5. Lights up (green) when the power

supply is on. Lights up (Yellow) when one of the

power supply fans is faulty Connects to the power cable.

connector

Fan module fail LED Lights up (Yellow) when one or two

fans are faulty.

Fan module (includes two fans)

The fan module is used in place of the third power supply m odul e if one is not available.

The powe r supply has two cooling fans. If both fans fail to operate, the power supply

module will shut do wn. The LED indicators of the power supply module will be turned off.

If the fans are functioning properly and the power supply fails, the fans will keep

operating.

System Housing 2-5

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