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GT RAX Systems
Reference
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User Manual
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Intergraph GT RAX Systems Reference

GT RAX Systems
System Reference
April 1999 D1AA00100

Copyright

1999 Intergraph Computer Systems. All rights reserved. This document contains information protected by copyright, trade secret, and trademark law. This document may not, in whole or in part, be reproduced in any form or by any means, or be used to make any derivative work, without written consent from Intergraph Computer Systems.
Intergraph Computer Systems, Huntsville AL 35894-0001

Notice

Information in this document is subject to change without notice and should not be considered a commitment by Intergraph Computer Systems. Intergraph Computer Systems shall not be liable for technical or editorial errors in, or omissions from, this document. Intergraph Computer Systems shall not be liable for incidental or consequential damages resulting from the furnishing or use of this document.
All warranties given by Intergraph Computer Systems about equipment or software are set forth in your purchase contract. Nothing stated in, or implied by, this document or its contents shall be considered or deemed a modification or amendment of such warranties.

Trademarks

Intergraph Computer Systems and the Intergraph Computer Systems logo are registered trademarks of Intergraph Computer Systems. StudioZ and ViZ RAX are trademarks of Intergraph Computer Systems. Other brands and product names are trademarks of their respective owners.

FCC/DOC Compliance

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy. If the equipment is not installed and used in accordance with the instruction manual, it may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Changes or modifications made to the system that are not approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigencies du Règlement sur le materi él brouilleur du Canada.

Warnings

The service and upgrade instructions should be performed by qualified personnel only. Qualified personnel do not have to be Intergraph service personnel. Qualified personnal can include those who are familiar with servicing computers, can follow instructions in a manual to service equipment, and can do so without harm to themselves or damage to the equipment.
Changes or modifications made to the system that are not approved by the party responsible for compliance could void the user's authority to operate the equipment.
To reduce the risk of electrical shock, do not attempt to open the equipment unless instructed. Do not use a tool for purposes othe r than instructed.
There is a danger of explosion if the battery is incorrectly replaced. Replace the battery only with the same or equivalent type as recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions.

Notes

Read all operating instructions before using this device. Keep these instructions for future reference. Follow all warnings on the device or in the operating instructions. This device is designed and manufactured to comply with approved safety standards for information processing and business equipment.

Contents

Preface........................................................................................................................................... vii
About This Document....................................................................................................................vii
Document Conventions .................................................................................................................. vii
Customer Support.......................................................................................................................... viii
1 Accessing the Components.......................................................................................................... 1
Before You Begin............................................................................................................................. 2
Tools................................................................................................................................................. 2
Avoiding Electrostatic Discharge..................................................................................................... 2
Opening the Base Unit...................................................................................................................... 3
Opening and Closing the Face Panel................................................................................................ 3
Closing the Base Unit....................................................................................................................... 4
System Illustrations .......................................................................................................................... 5
2 Servicing the System.................................................................................................................... 7
Before You Begin............................................................................................................................. 8
Base Unit Components..................................................................................................................... 8
Disk Drives....................................................................................................................................... 9
Disk Drive Bay............................................................................................................................... 14
SAF-TE Card.................................................................................................................................. 16
Power Supply..................................................................................................................................17
Processor Modules ......................................................................................................................... 19
Heat-Sink Mounting Brackets ........................................................................................................ 20
Retention Modules.......................................................................................................................... 21
Dual Inline Memory Modules......................................................................................................... 22
System Board..................................................................................................................................23
Expansion Cards............................................................................................................................. 24
Chassis Fan..................................................................................................................................... 24
Disk Drive Bay Fans.......................................................................................................................26
CMOS/Clock Lithium Battery........................................................................................................ 26
LEDs, Power, and Reset Switches.................................................................................................. 27
iii
Hardware and Software Support Services.......................................................................viii
World Wide Web............................................................................................................ viii
Intergraph Bulletin Board Service...................................................................................viii
Telephone.......................................................................................................................... ix
More Support Options....................................................................................................... ix
System Disk Drive.............................................................................................................. 9
CD-ROM Drive................................................................................................................ 10
Floppy Disk Drive............................................................................................................ 12
Removable Disk Drives....................................................................................................13
3 Upgrading the System............................................................................................................... 31
Before You Begin........................................................................................................................... 32
Adding Memory............................................................................................................................. 32
Upgrading Processors..................................................................................................................... 34
iv
Adding Expansion Cards................................................................................................................ 34
Slot Locations................................................................................................................... 35
Installing Expansion Cards............................................................................................... 35
Expansion Cards with PCI-to-PCI Bridges...................................................................... 36
Assigning System Resources............................................................................................ 36
Adding Removable Disk Drives..................................................................................................... 37
Adding an Internal SCSI Peripheral Device................................................................................... 37
Adding External SCSI Peripheral Devices..................................................................................... 40
SCSI Cable Lengths and Device Speeds.......................................................................... 40
SCSI Cable Quality.......................................................................................................... 41
SCSI IDs .......................................................................................................................... 41
SCSI Termination for External Devices........................................................................... 41
Connecting an External SCSI Drive................................................................................. 41
Changing SCSI Controller or Device Settings................................................................. 42
4 System Board............................................................................................................................. 43
Slots and Sockets............................................................................................................................ 44
Connectors and Components.......................................................................................................... 45
Connectors...................................................................................................................................... 46
Jumper Functions............................................................................................................................ 49
Jumper Connectors......................................................................................................................... 50
CPU Frequency................................................................................................................ 50
Host Bus Frequency......................................................................................................... 51
External Ports................................................................................................................................. 52
Sound Processor............................................................................................................................. 58
5 System Resources....................................................................................................................... 59
Available IRQs............................................................................................................................... 60
Freeing IRQs .................................................................................................................................. 60
PCI Devices.................................................................................................................................... 60
PCI to ISA Bus Interrupt Mapping................................................................................................. 60
Configuration Data......................................................................................................................... 61
Interrupt Requests (IRQs)................................................................................................ 61
DMA Channels................................................................................................................. 62
Input/Output Addresses.................................................................................................... 62
Memory Address Map...................................................................................................... 63
6 System Hardware...................................................................................................................... 65
Hardware Overview........................................................................................................................ 66
Functional Diagram........................................................................................................................ 67
System Board Block Diagram........................................................................................................ 68
SCSI Cable Routing........................................................................................................................69
Disk Drive Bay............................................................................................................................... 70
Cable Routing and Pinouts............................................................................................... 70
Jumper Settings................................................................................................................ 72
Removable Disk Drive LEDs........................................................................................... 72
Power Supply..................................................................................................................................73
Chassis Cooling Fans...................................................................................................................... 74
Disk Drive Bay Cooling Fans ......................................................................................................... 75
Hardware Monitoring and Power Management.............................................................................. 75
7 Peripheral Devices..................................................................................................................... 77
Internal Peripheral Device Cables.................................................................................................. 78
Floppy Disk Drive Cable.................................................................................................. 78
Disk Drive Bay SCSI Cable............................................................................................. 78
Wide Ultra2 SCSI Cable.................................................................................................. 79
Narrow Ultra SCSI Cable................................................................................................. 79
Peripheral Device Configuration.................................................................................................... 80
Floppy Disk Drive............................................................................................................ 80
SCSI CD-ROM Drive...................................................................................................... 80
SCSI Disk Drives............................................................................................................. 81
8 System Information................................................................................................................... 83
Specifications ................................................................................................................................. 84
System Configuration Summary..................................................................................................... 84
System Board..................................................................................................................................85
v
vi

Preface

This System Reference document describes how to service and upgrade your Intergraph Computer Systems rack-mount GT RAX System. This document supports the following RAX systems:
♦ StudioZ GT RAX for SOFTIMAGE|DS ♦ StudioZ GT for SynaFlex ♦ ViZRAX-GT

About This Document

This System Reference document is organized as follows:
♦ Chapter 1, “Accessing the Components,” describes how to open and close the base unit and
how to access internal system components.
♦ Chapter 2, “Servicing the System,” describes how to replace standard system components. ♦ Chapter 3, “Upgrading the System,” describes how to add components to the system. ♦ Chapter 4, “System Board,” provides detailed information on the system board and its
components.
vii
♦ Chapter 5, “System Resources,” provides detailed information on system resources. ♦ Chapter 6, “System Hardware,” provides a system hardware overview and technical
information on system components.
♦ Chapter 7, “Peripheral Devices,” provides information on cabling and configuration o f
standard system peripherals.
♦ Chapter 8, “System Information,” provides system specifications and other general technical
information.

Document Conventions

Bold
Italic Variable values that you supply, or cross-references.
Monospace
SMALL CAPS Key names on the keyboard ( s uch as D, ALT, or F3) and names of files and
CTRL+D Press a key while simultaneously pressing another key; for example, press CTRL and
Commands, words, or characters that you key in literally.
Output displayed on the screen.
directories. You can type filenames and directory names in the dialog boxes or the command line in lowercase unless directed otherwise.
D simultaneously.
viii

Customer Support

Intergraph Computer Systems offers an assortment of customer support options.

Hardware and Software Support Services

Intergraph Computer Systems provides a variety of hardware services for Intergraph and third­party equipment. Services include warranty upgrades, repair depot service, on-site hardware maintenance, system administration, and network co nsulting. Hardware purchased from Intergraph Computer Systems includes a factory warranty ranging from 30 days to three years. A detailed warranty description is available on the World Wide Web; see the Support pages at http://www.intergraph.com/ics.
Intergraph Computer Systems provides complimentary software support for 30 or 90 days following shipment of a hardware or software product. This includes World Wide Web access, Intergraph Bulletin Board Service access, and telephone (Help Desk) support. At the end of the complimentary support period, you can purchase other levels of software support.

World Wide Web

You can visit Intergraph Computer Systems on the World Wide Web at http://www.intergraph.com/ics. On these pages, you can get news and product information, technical support information, software updates and fixes, and more.

Intergraph Bulletin Board Service

On the Intergraph Bulletin Board Service (IBBS), you can get technical support information, software updates and fixes, and more.
NOTE Most of the system software for your RAX system can be found in the TDZ 2000 GT1
area of the IBBS. Additional software can be found in the Digital Media area of the IBBS.
To connect to the IBBS:
1. Set your system’s communications protocol for eight (8) data bits, no parity, one (1) stop bit,
and any baud rate up to 14,400.
2. Using a modem, call 1-256-730-8786. Outside the United States, call one of the mirror sites
listed on World Wide Web; see the Software Support pages at http://www.intergraph.com.
3. At the login prompt, key in your user ID, or new if you have not used the IBBS befo re.
4. Follow the menus to find what you need.
If you have trouble conne cting to or using the IBBS , call the Customer Response Center at 1-800-633-7248 (product entry IBBS) or leave a message for the IBBS System Operator at 1-256-730-1413.

Telephone

To get customer support by telephone:
♦ In the United States, call 1-800-633-7248 between the hours of 7:00 a.m. and 7:00 p.m.
♦ Outside the United States, contact your local Intergraph Computer Systems subsidiary or
Have the following information available when you call:
♦ Your service number, which identifies your site to Intergraph Computer Systems. You use
♦ Your Customer Personal Identification Number (CPIN). You get a CPIN the first time you
♦ The product’s name or model number.
ix
Central Time, Monday through Friday (except holidays).
distributor.
your service number for warranty or maintena nce calls.
call the Customer Response Center; it is associated with your service number for future call logging.
♦ The product’s serial number. Software product serial numbers are included in the product
packaging. Hardware product serial numbers are on a sticker affixed to the product.
♦ Your name and telephone number. ♦ A brief description of the question or problem.

More Support Options

To get information on more customer support options:
♦ Visit the Support pages on the World Wide Web at http://www.intergraph.com/ics. ♦ For hardware support questions in the United States, call 1-800-763-0242. ♦ For software support questions in the United States, call 1-800-345-4856. ♦ Outside the United States, contact your local Intergraph Computer Systems subsidiary or
distributor.
x

1 Accessing the Components

This chapter describes how to access the internal components of the system so you can service and upgrade your GT RAX system. This chapter also lists tools and describes methods for avoiding electrostatic discharge, removing and replacing cover panels, and accessing components.
Before You Begin............................................................................................................................. 2
Tools................................................................................................................................................. 2
Avoiding Electrostatic Discharge..................................................................................................... 2
Opening the Base Unit...................................................................................................................... 3
Opening and Closing the Face Panel................................................................................................ 3
Closing the Base Unit....................................................................................................................... 4
System Illustrations .......................................................................................................................... 5
1
2

Before You Begin

WARNING Disconnect the system and peripheral devices from AC power before servicing
internal components! Failure to remove AC power may result in equipment damage or personal injury. The GT RAX system is always on when connected to AC power.
WARNING Follow all warnings and cautions in the servicing instructions. If you fail to
follow documented procedures, personal injury and damage to equipment can result.
CAUTION Use an antistatic wrist strap for all servicing procedures to avoid the possibility of
electrostatic discharge.
“Right side” and “left side” are as seen fr om the front of the unit.

Tools

You will need the following tools to service the system:
♦ Antistatic wrist strap ♦ Quarter-inch nutdriver ♦ No. 1 and No. 2 Phillips screwdrivers ♦ Three-sixteenth-inch or 5 mm nutdriver ♦ Five-sixteenth-inch or 8 mm nutdriver ♦ Small single-slot screwdriver

Avoiding Electrostatic Discharge

Sensitive components inside the base unit can be damaged by static electricity. To protect against this possibility, take the following precautions when working with internal components.
♦ Unplug the unit from AC power before servicing any electronic component inside the chassis. ♦ Touch the bare metal of the base unit to ensure the base unit and your body are at the same
electric potential.
♦ Handle all printed circuit boards as little as possible and by the edges only. Leave new parts
in their protective packaging until you install them.
♦ Use a disposable or reusable antistatic wrist strap when servicing or upgrading the system.
Once a disposable wrist strap is used, it cannot be used again.
♦ Attach an antistatic wrist strap to any bare metal part of the base unit. The metal conductor in
the elastic sleeve of reusable antistatic straps must contact bare skin.

Opening the Base Unit

WARNING Before you open the base unit, shut down the system, disconnect the system
from AC power, and turn off power to external devices (including peripheral devices and the monitor). Use caution to avoid injury when removing covers and other hardware.
CAUTION Ensure the stabilizers of the rack in which the system is mounted are fully extended.
To open the base unit:
1. Remove the screws that secure the handles to the rack.
2. Disconnect all cables including the power cable, monitor, and all peripheral cables from the
back of the unit.
3. Slide the base unit out of the rack until it locks in the extended position.
4. Remove and retain the two screws that secure the top cover to the chassis: one each on the
upper left and upper right corners of the back of the chassis.
3
5. Slide the top cover back and lift it off.
6. Attach the grounding clip from the antistatic wrist strap to bare metal.

Opening and Closing the Face Panel

Face Panel Thumbscrew (one on each side)
4
To open the face panel:
1. Open the disk drive bay door.
2. Loosen the two thumbscrews that secure the face panel to the base unit (on the upper right and
upper left corners of the face panel). See the following figure.
3. Pull the face panel toward you to open it. The face panel swings down on hinges attached to
the lower corners of the base unit. See the following figure.
To close the face panel:
1. Lift the face panel upward and push it onto the base unit.
2. Secure the face panel to the base unit by tightening the two thumbscrews.
3. Close the disk drive bay door.

Closing the Base Unit

CAUTION After servicing or upgrading the system, always replace the covers that were
removed. The covers ensure the system maintains proper air flow, so internal components do not overheat and fail. The covers also ensure that electromagnetic interference (EMI) emissions remain below the standard requirements.
To close the base unit:
1. Remove the antistatic wrist strap from the base unit.
2. Replace the top cover.
3. Secure the top cover to the base unit with the screws retained earlier.
4. Slide the base unit into the rack.
5. Secure the base unit to the rack by replacing the screws attaching the handles to the rack.
6. Reconnect all cables including the power cable, monitor, and peripheral cables to the back of
the system.

System Illustrations

The following illustrations show both external and internal views of the system.
This front, right view shows the system with all covers in place .
5
Disk Drive Bay
Door Lock
Disk Drive Bay
CD-ROM Drive
Floppy Disk Drive
Top Cover
Face Panel
System LEDs and Power/Reset Switches
6
This back, right view shows major internal parts of the system without covers, cables, system board, and option cards.
Power Supply
Chassis Fan/ Mounting Plate
Peripheral Device Bay
Face Panel
Disk Drive Bay
Disk Drive Bay Fans
Input/Output Panel
Expansion Slots

2 Servicing the System

This chapter describes how to replace the standard parts inside your GT RAX system.
Before You Begin............................................................................................................................. 8
Base Unit Components..................................................................................................................... 8
Disk Drives....................................................................................................................................... 9
System Disk Drive.............................................................................................................. 9
CD-ROM Drive................................................................................................................ 10
Floppy Disk Drive............................................................................................................ 12
Removable Disk Drives....................................................................................................13
Disk Drive Bay............................................................................................................................... 14
SAF-TE Card.................................................................................................................................. 16
Power Supply..................................................................................................................................17
Processor Modules ......................................................................................................................... 19
Heat-Sink Mounting Brackets ........................................................................................................ 20
Retention Modules.......................................................................................................................... 21
Dual Inline Memory Modules......................................................................................................... 22
System Board..................................................................................................................................23
Expansion Cards............................................................................................................................. 24
Chassis Fan..................................................................................................................................... 24
Disk Drive Bay Fans.......................................................................................................................26
CMOS/Clock Lithium Battery........................................................................................................ 26
LEDs, Power, and Reset Switches.................................................................................................. 27
7
8

Before You Begin

WARNING Disconnect the system and peripheral devices from AC power before servicing
internal components! Failure to remove AC power may result in equipment damage or personal injury. The GT RAX system is always on when connected to AC power.
WARNING There is a danger of explosion if the battery is incorrectly replaced.
WARNING Follow all warnings and cautions in the servicing instructions. If you fail to
follow documented procedures, personal injury and damage to equipment can result.
CAUTION Use an antistatic wrist strap for all servicing procedures to avoid the possibility of
electrostatic discharge.
CAUTION Do not overtighten screws and other fasteners to avoid damaging threads.
CAUTION Follow all warnings and cautions in these servicing instructions. If you fail to follow
documented, approved procedures, personal injury or damage to equipment can result.
See Chapter 1, “Accessing the Components,” for details on opening the system and protecting against electrostatic discharge. These procedures assume you have removed the cover from the system. “Right side” and “left side” are as seen from the front of the unit. After servicing the system, replace panels as described in Chapter 1, “Accessing the Components.”

Base Unit Components

The following figur e shows the base unit components that can be replaced:
Disk Drive
Bay Door
Top Cover
Face Panel
To replace the disk drive bay door, you must first remove the top cover and open the face panel. To replace the face panel, you must remove the top cover and the disk drive bay door.
To replace the top cover:
1. Remove the top cover. See Chapter 1, “Accessing the Components,” for details.
2. Install the new cover.
To replace the disk drive bay door:
1. Open the face panel. See Chapter 1, “Accessing the Components,” for details.
2. Remove the two hinge screws attaching the door to the face panel.
3. Remove the door.
4. Position the new door so that the screw holes on the door are aligned with holes in the face
panel.
5. Replace the two hinge screws, ensuring that the hinge screws are equally tightened. This will
ensure that the door is centered properly.
To replace the face panel:
1. Remove the disk drive bay door from the old face panel as described previously.
9
2. Install the disk drive bay door in the new face panel as described previously.
3. Remove the old face panel by removing the two shoulder screws at the bottom left and right
corners of the face panel.
4. Align the bottom of the new face panel with the front of the unit, and reattach the two shoulder
screws from step 3.
5. Close the new face panel. See Chapter 1, “Accessing the Components,” for details.

Disk Drives

This section explains how to replace the CD-ROM drive and the various disk drives in the system. See Chapter 7, “Peripherals,” for details on drive configuration and cables.

System Disk Drive

The system disk drive is located in the uppermost part of the peripheral device bay, above the CD-ROM and floppy disk drives, as shown in the following figure.
10
Nuts (two on each side)
To replace the system disk drive:
1. Disconnect the power cable and SCSI cable from the disk drive.
2. Remove the four nuts (two on each side) from the vertical screws on each side of the disk
drive, and lift the disk drive out of the chassis.
3. Remove the brackets from the replaced disk drive and secure them to the new disk drive.
WARNING Handle the disk drive carefully to prevent failure and voiding the warranty for
4. Replace the new disk drive in the chassis and secure it with the four nuts removed previously.
5. Connect the power cable and SCSI cable to the disk drive.
You will need to reinstall the operating system and associated system software on the new system disk drive. See System Setup for more information.

CD-ROM Drive

To replace the CD-ROM drive:
1. For ease of access, remove the chassis fan as described later in “Chassis Fan.”
the drive.
11
2. Disconnect the power cable and SCSI cable from the CD-ROM drive. Note the position of the
red stripe on the SCSI cable.
Data Cable Power Connector
3. Loosen the thumbscrew on the front-most locking plate on the top left side of the peripheral
device bay.
Locking Plate Thumbscrew
4. Lift and hold the locking plate.
5. From inside the chassis, push the back of the CD-ROM until the bezel clears the front of the
chassis, then slide the device out.
6. Remove the mounting guides from the right and left sides of the CD-ROM drive.
Mounting Guide Screws
Slot for Drive Placement
12
7. Note the jumper settings on the back of the CD-ROM drive.
8. Set the SCSI ID jumper to the same address as the old drive.
9. Install the mounting guides on the sides of the ne w CD-ROM drive. The flat mounting guide
goes on the right side of the CD-ROM drive; the slotted mounting guide goes on the left side.
10. Slide the new CD-ROM drive into the chassis and align the first slot in the mounting guide
with the locking plate.
11. Lower the locking plate, making sure the locking plate tabs slide into the first slot on the
mounting guide.
12. Tighten the locking plate thumbscrew.
13. Connect the SCSI cable and power cable to the CD-ROM drive.
14. Replace the chassis fan, as described later in “Chassis Fan.”

Floppy Disk Drive

To replace the floppy disk drive:
1. For ease of access, remove the chassis fan as described later in “Chassis Fan.”
2. Remove the CD-ROM drive as described previously in “CD-ROM Drive.”
3. Disconnect the power cable and data cable from the drive. Note the position of the red stripe
on the data cable.
Data Cable
Power Connector
4. Loosen the thumbscrew on the locking plate to the top left side of the peripheral device bay, as
described previously in “CD-ROM Drive.”
5. Lift and hold the locking plate.
6. From inside the chassis, push the back of the floppy disk drive until the bezel clears the front
of the chassis, and slide the device out.
7. Remove the mounting guide on the left side of the floppy disk drive.
Mounting Guide Screws
Alignment Slot
8. Attach the mounting guide to the left side of the new floppy disk drive.
9. Raise the locking tab on the peripheral drive bay.
10. Slide the new floppy disk drive into the chassis and align the first slot on the mounting guide
with the locking plate tab.
11. Lower the locking plate, making sure the locking plate tab slides into the first slot on the
mounting guide.
12. Connect the data cable and power cable to the floppy disk drive.
13. Replace the CD-ROM drive as described previously in “CD-ROM Drive.”
14. Tighten the locking plate thumbscrew.
13
15. Replace the chassis fan, as described later in “Chassis Fan.”

Removable Disk Drives

The disk drive bay may contain up to four removable Wide Ultra2 SCSI disk drives that provide additional disk space for the system.
Drive Rail
Drive Connector
Latching Clips
Drive 0
14
To replace a removable disk drive:
1. Open the disk drive bay door on the front of the system.
2. Flip the removable disk drive’s latching clips outward to disengage the drive. Wait 30
seconds to allow the drive to spin down and park the heads.
3. Carefully eject the drive completely from the rails, and remove it from the disk drive bay.
WARNING Handling a spinning disk drive or mishandling a removed disk drive can cause
the heads to crash! Subsequent failures may not be noticeable for three to six months. Handle disk drives carefully to avoid damage.
4. Remove the drive mounting plate from the removed disk drive, making sure to retain the
mounting plate screws. Attach the mounting plate to the bottom (circuit board side) of the new drive, using the four scr ews you retained from the removed drive.
WARNING Removing and attaching the drive mounting plate requires careful handling to
avoid contact with the delicate, electrostatic-sensitive parts on the circuit board of the disk drive. Handle disk drives carefully to prevent failure and voiding the warranty for the drives.
5. To insert the new removable disk drive, extend the latching clips on the drive and align the
rails on the sides of the drive with the slot guides in the disk drive bay. The metal casing of the drive faces left.
6. With your thumb, push the mounting plate at the center between the latching clips until it
slides all the way into the slot and firmly engages the connector.
7. Close the latching clips to lock the drive in the slot.
8. Label the new drive with the same ADP, CH, and ID numbers used on the replaced drive, as
appropriate.
For more information on the removable disk drives, see Chapter 3, “Upgrading the System.”

Disk Drive Bay

The disk drive bay includes the disk drive cage, backplane, and LEDs. This assembly is always replaced as one unit.
To replace the disk drive bay:
1. Remove all removable disk drives from the disk drive bay as described previously in
“Removable Disk Drives.” Note the original slot location for each drive. The drives should be reinstalled in the same slot locations from which they we re removed.
2. Remove and retain the six screws that attach the disk drive bay to the chassis. Support the
disk drive bay as the last screw is removed.
Disk Drive Section Screws
3. Gently pull forward on the disk drive bay until it is partially out of the chassis.
4. Note the location of the SCSI cable and disconnect it from the back of the disk drive bay.
15
Power Connectors
SCSI Cable
5. Disconnect the power cables attached to the disk drive bay, using caution to avoid damage to
the cables and components on the disk drive backplane. Do not pull on the wires of the power cables, as damage to the cables will occur.
6. Slide the disk drive bay the rest of the way out of the chassis.
7. Verify that the jump er settings on the back of the replacement disk drive bay match the one
being replaced.
NOTE If the system is configured to use the disk drive bay for RAID and to use the Mylex
RAID controller, the jumper connectors JP2 and JP3 must not have any jumpers installed.
16
8. If the old disk drive bay has a SAF-TE card (as described in the next section), remove it from
the old disk drive bay and install it in the same location on the new disk drive bay.
9. Insert the new disk drive bay partially into the chassis.
10. Reconnect the SCSI cable and power connectors in the same positions as the old disk drive
bay.
11. Insert the new disk drive bay the rest of the way into the chassis, and secure it with the screws
removed earlier.
12. Insert the removable disk drives into the disk drive bay as described previously in “Removable
Disk Drives.” The drives should be installed in the same slots from which they were remo ved.
13. Replace the front panel and cover.
14. Restart the system and ensure the LED for each drive lights.

SAF-TE Card

The SCSI Activity Fault-Tolerant Enclosure (SAF-TE) card is an option used on systems with RAID configurations. I f your system has a RAID configuration with a SAF-TE card, use the following procedure to replace the SAF-TE card.
To move or replace the SAF-TE card:
1. Remove the disk drive bay as described previously in “Disk Drive Bay.” The SAF-TE card is
located in the middle of the SCSI backplane on the back of the disk drive bay.
SAF-TE Card
2. Press the two metal clips on the outside of the SAF-TE card mounting slot away from each
other, then gently rotate the SAF-TE card to a vertical position and remove it.
17
3. Place the SAF-TE card vertically in the mounting slot and rotate it toward the metal clips until
it snaps into place, with the clips securing the card. Use caution to avoid applying too much force, as damage to the SAF-TE card and/or the disk drive backplane may result.
4. Replace the disk drive bay as described previously in “Disk Drive Bay.”

Power Supply

See Chapter 6, “System Hardware,” for technical information on the power supply.
To replace the power supply:
1. Unplug the AC power cord from the rear of the unit.
2. Remove the top cover. See Chapter 1, “Accessing the Components,” for details.
3. Note the location of all power cable connectors on the system board and peripheral devices:
Connector
P1 System board P2 Reserved P3 CD-ROM drive P4 Floppy drive P5 Reserved P6 SCSI backplane (on disk drive bay) P7 Reserved; use for peripheral drive bay device P8 Reserved P9 SCSI backplane (on disk drive bay)
Mounting Clips
Connects to
4. Disconnect all power cables from all internal devices and the system board.
18
5. Remove and retain the fo ur screws securing the power supply and mounting plate to the back
and top of the system.
CAUTION Support the power supply as you remove the screws. Do not let the power supply fall
as you remove the fourth screw.
Power Supply Screws
6. Remove the old power supply and mounting plate.
7. Remove and retain the fo ur screws securing the mounting plate to the power supply.
Mounting Screws
8. Using the same four screws, attach the mounting plate to the new power supply.
9. Place the new power supply and mounting plate into the chassis, and secure it with the four
screws retained in step 3.
10. Make sure that the voltage selection switch on the back panel of the base unit is set to the
proper line voltage for your location. If your location uses 115 volts, make sure the number 115 is visible. If your location uses 230 volts, make sure the number 230 is visible.
WARNING If you do not set the voltage selection switch correctly, serious equipment
damage may result when you turn on power to the system.
11. Connect the power cables to the system board and internal devices. See Chapter 6, “System
Hardware,” for connection details.

Processor Modules

For ease of access, you may have to remove the power supply as described previously in “Power Supply.” See Chapter 4, “System Board,” for connector and socket locations.
To replace a passive processor module:
1. Remove the heat-sink lock from within the heat-sink fins, if necessary, by pressing the ends of
the lock inward and pulling lock outward.
2. Press the locking tabs on the top corners of the processor inward, towards each other, until
they click into the release position.
3. Slide the processor module out of the retention module.
4. Remove the new processor from its antistatic package, and align the processor module over
the retention module. The processor module is keyed and fits only one way.
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Processor
Retention module
Heat sink mounting bracket
Heat sink lock
5. Press the processor module down until it seats.
6. Press the processor module locking tabs outward until they click into the locked position.
7. Install the heat-sink lock between the heat-sink fins, if necessary, by sliding the lock between
the fins and pressing it onto the heat-sink lock mounting posts.
The processor nearest the side of the chassis has a vertically oriented heat sink instead of a horizontally oriented heat sink, as shown in the following figure. However, this processor connects to the retention module in the same way as the other processor.
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