HP COMPAQ EVO W8000 User Manual

Maintenance & Service Guide

Compaq Evo Workstation W8000

Document Part Number: 229690-001 Spare Part Number: 229781-001

May 2001

© 2001 Compaq Computer Corporation Compaq and the Compaq logo Registered in U. S. Patent and Trademark Office. Evo is a trademark of Compaq Information Technologies Group, L. P. in the United States and other

countries. Microsoft, Windows, Windows NT are trademarks of Microsoft Corporation in the United States and other

countries. Intel and Pentium are trademarks of Intel Corporation in the United States and other countries. All other product names mentioned herein may be trademarks of their respective companies. Compaq shall notbe liable for technical or editorial errors or omissions contained herein. The information in

this document is provided “as is” without warranty of any kind and is subject to change without notice. The warranties for Compaq products are set forth in the express limited warranty statements accompanying such products. Nothing herein should be construed as constituting an additional warranty.

Maintenance & Service Guide First Edition (May 2001) Document Part Number: 229690-001 Spare Part Number: 229781-001

Preface

ABOUTTHISGUIDE................................................... vi

SymbolsandConventions............................................. vi

TechnicianNotes....................................................vii

LocatingAdditionalInformation........................................vii

1 Product Description

1.1 Product Features ...................................................1–2

1.1.1 FrontPanelControlsandLEDs..................................1–2

1.1.2 Rear Panel Connectors ........................................1–3

1.1.3 DrivePositions ..............................................1–4

1.2 SerialNumberLocation.............................................1–5

2 Spare Parts

3 Removal & Replacement Preliminaries

3.1 ElectrostaticDischargeInformation....................................3–1

3.1.1 GeneratingStatic.............................................3–2

3.1.2 PreventingElectrostaticDamagetoEquipment.....................3–2

3.1.3 PersonalGroundingMethodsandEquipment.......................3–3

3.1.4 Grounding the Work Area. . ....................................3–3

3.1.5 RecommendedMaterialsandEquipment..........................3–4

3.2 RoutineCare......................................................3–5

3.2.1 GeneralCleaningSafetyPrecautions.............................3–5

3.2.2 CleaningtheChassisExterior...................................3–5

3.2.3 Cleaning the Keyboard ........................................3–5

3.2.4 CleaningtheMonitor..........................................3–6

3.2.5 CleaningtheMouse...........................................3–6

3.3 ServiceConsiderations..............................................3–6

3.3.1 Power Supply Fan ............................................3–6

3.3.2 ToolsandSoftwareRequirements................................3–7

3.3.3 Screws.....................................................3–7

3.3.4 CablesandConnectors ........................................3–7

3.3.5 HardDrives.................................................3–7

3.3.6 LithiumCoinCellBattery......................................3–8

Maintenance & Service Guide iii

Contents

4 Removal & Replacement Procedures

4.1 DisassemblySequenceChart.........................................4–1

4.2 PreparationforDisassembly..........................................4–2

4.3 CableLock.......................................................4–3

4.4 WorkstationFeet...................................................4–4

4.5 AccessPanel......................................................4–5

4.6 Battery...........................................................4–6

4.7 HoodSensor......................................................4–7

4.8 ShippingBracket...................................................4–8

4.9 MemoryComponents...............................................4–9

4.9.1 Overview...................................................4–9

4.9.2 RemovingtheMemoryExpansionBoard.........................4–10

4.9.3 RIMMInstallationGuidelines..................................4–11

4.9.4 RIMMSlotLocations........................................4–12

4.9.5 RIMMSocketConfigurations..................................4–12

4.9.6 InstallingaMemoryDevice...................................4–13

4.10 FrontBezel.....................................................4–14

4.11 BlankDriveBezel................................................4–15

4.12 FrontI/OBoardandPowerSwitchAssembly..........................4–16

4.13 EMI/CoolingShield..............................................4–17

4.14 MassStorageDevices.............................................4–18

4.14.1 DrivePositions ............................................4–18

4.14.2 SpareScrews..............................................4–19

4.14.3 RemovingaHardDrivefromBays5or6 .......................4–20

4.14.4 CD-ROMDrive............................................4–21

4.14.5 DisketteDrive.............................................4–22

4.15 ExpansionBoards................................................4–23

4.15.1 RemovinganExpansionBoard................................4–24

4.15.2 Installing an Expansion Board.................................4–25

4.16 AirBaffles......................................................4–26

4.16.1 MainBaffle...............................................4–26

4.16.2 Power Supply Air Baffle . . ...................................4–27

4.17 PowerSupply...................................................4–28

4.18 RemovableHardDriveCage.......................................4–29

4.18.1 RemovingtheRemovableHardDriveCage......................4–29

4.18.2 Removing a Hard Drive from the Removable

HardDriveCage(Bays1-3)..................................4–30

4.18.3 Installing a Hard Drive in the Removable

HardDriveCage(Bays1-3)..................................4–31

4.19 Heatsink and Processor 4–33

4.19.1 SeparatingtheHeatsink-ProcessorAssembly.....................4–33

HeatsinkCool-DownTime....................................4–33

HeatsinkWarm-UpTime.....................................4–33

4.19.2 RemovingtheHeatsinkandProcessor..........................4–34

4.19.3 Installing an Additional Processor..............................4–36

HardwareAbstractionLayer...................................4–36

AdditionalProcessorInstallation ...............................4–36

4.20 SystemBoard...................................................4–39

4.21 RearFan.......................................................4–40

4.22 ProcessorFan...................................................4–41

4.23 Speaker........................................................4–42

4.24 CardGuide.....................................................4–43

4.25 AirPlenumFan..................................................4–44

iv Maintenance & Service Guide

5 Connectors and Jumpers

5.1 SystemBoard.....................................................5–1

5.1.1 ConnectorsandJumpers.......................................5–2

5.1.2 SystemBoardTroubleshootingLEDs.............................5–3

LED Based Hardware Troubleshooting Tables . . . ..................5–3

5.1.3 DisableandClearPasswordJumper..............................5–6

5.1.4 ClearingCMOS..............................................5–7

5.2 MassStorage......................................................5–8

5.2.1 HardDrives.................................................5–8

5.2.2 CD-ROMorDVD-ROMDrive..................................5–8

5.2.3 ZipDrive...................................................5–8

A SCSI Devices

SCSIGuidelines...................................................... A–1

Using the Multi-Mode SCSI Cable........................................ A–2

UsingSCSISelectwithSCSIDevices ..................................... A–3

SMART............................................................. A–3

B Specifications

SystemSpecifications.................................................. B–1

SystemInterrupts..................................................... B–1

Contents

Index

Maintenance & Service Guide v

ABOUT THIS GUIDE

This Maintenance & Service Guide is a troubleshooting and repair guide that can be used for reference when servicing the Compaq Evo Workstation W8000. Only authorized technicians trained by Compaq should attempt to repair this equipment.

Compaq Computer Corporation reserves the right to make changes to the these models without notice.

Symbols and Conventions

The following text and symbols mark special messages throughout this guide:

WARNING: Text set off in this manner indicates that failure to follow directions in the

warning could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result

in damage to equipment or loss of data.

Preface

Text set off in this manner presents commentary, sidelights, clarifying

✎

information, or specific instructions.

Maintenance & Service Guide vi

Preface

Technician Notes

WARNING: Only authorized technicians trained by Compaq should attempt to repair this

equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board. Improper repairs can create a safety hazard. Any indications of component replacement or printed wiring board modifications may void any warranty.

WARNING: To reduce the risk of electric shock or damage to the equipment:

■ Do not disable the power grounding plug. The grounding plug is an important safety

feature.

■ Plug the power cord into a grounded (earthed) electrical outlet that is easily

accessible at all times.

■ Disconnect the power from the computer by unplugging the power cord either from

the electrical outlet or the computer.

CAUTION: To properly ventilate your system, you must provide at least 3 inches (7.6 cm)

of clearance at the front and back of the computer.

Locating Additional Information

The following documentation is available to support these products:

■ User Documentation

■ Technical Training Guides

■ Compaq Service Advisories and Bulletins

■ Compaq QuickFind

■ Technical Reference Guide

■ Compaq Quick Reference Guide

■ Compaq Service Reference Guide

■ Compaq Quick Troubleshooting Guide

vii Maintenance & Service Guide

Product Description

This chapter describes the model offerings and features of the Compaq Evo Workstation W8000.

Maintenance & Service Guide 1–1

Product Description

1.1 Product Features

The W8000 ships with a mouse and keyboard. Some models are also equipped with a CD-ROM, DVD-ROM, or CDRW drive. A Compaq color monitor or other compatible monitor does not ship with the workstation.

1.1.1 Front Panel Controls and LEDs

Ref. Component/Function Ref. Component/Functions

CD-ROM headphone connector

CD-ROM volume

Diskette drive activity light

Powe r button

Hard drive activity light

Powe r-on ligh t

Headphone connector

Two Universal Serial Bus (USB) connectors

CD-ROM eject button

CD-ROM emergency eject opening

CD-ROM activity light

Diskette drive eject button

Network link/activity light

Microphone connector

1–2 Maintenance & Service Guide

1.1.2 Rear Panel Connectors

Product Description

Ref. Component/Function Ref. Component/Functions

Power cord connector

Mouse connector

Keyboard connector

Ultra160 SCSI connector

Two Universal Serial Bus (USB)

connectors

Line-out audio connector

Line-in audio connector

Serial connector B

Parallel connector

Serial connector A

Network Link/Activity LED

Ethernet connector

Network Connection Speed LED

Video (monitor) connector

Maintenance & Service Guide 1–3

Product Description

1.1.3 Drive Positions

The workstation provides seven drive bays. Bays 1 through 3 are located in the 3.5-inch removable hard drive cage, which is located behind the side access panel of the workstation. Drive bays 4 through 7 are located on the front of the workstation. The drives support various drive configurations.

Item Component Description

*An optional Zip drive can be installed in bay 5 or 6.

Bay 1 Part of the removable hard drive cage. A 3.5-inch, third-height

bay that supports a 1.0-inch hard drive or a 1.6-inch hard drive.

Bay 2 Part of the removable hard drive cage. A 3.5-inch, third-height

bay that supports a 1.0-inch hard drive. Bay 2 is not available when a 1.6-inch hard drive is installed in either bay 1 or bay 3.

Bay 3 Part of the removable hard drive cage. A 3.5-inch, third-height

bay that supports a 1.0-inch hard drive or a 1.6-inch hard drive.

Bay 4 5.25-inch, half-height bay that supports 1.0-inch or 1.6-inch

storage devices. Either a CD-ROM drive or DVD-ROM drive is shipped in bay 4.

Bay 5* 5.25-inch, half-height bay that supports 1.0-inch or 1.6-inch

storage devices.

Bay 6* 5.25-inch, half-height bay that supports 1.0-inch or 1.6-inch

storage devices.

Bay 7 3.5-inch, third-height bay that supports a 1.0-inch device. A

standard 3.5-inch diskette drive is shipped in bay 7.

1–4 Maintenance & Service Guide

1.2 Serial Number Location

Provide the workstation serial number to Compaq whenever you request information or order spare parts. There are two serial number locations on the unit. One is located on the top front corner of the access panel. The other is on the rear of the unit below the power supply.

For asset control, the serial number is also embedded in the Electrically Erasable Programmable Read Only Memory (EEPROM) on the system board. If the system board is replaced with a spare part from Compaq, an invalid serial number condition will be reported during the Power-On Self-Tests (POST). To clear the condition, re-enter the original serial number through Computer Setup.

Product Description

Maintenance & Service Guide 1–5

Spare Parts

Spare parts are listed and illustrated on the Illustrated Parts Map, spare part number 229782-001.

Maintenance & Service Guide 2–1

Removal & Replacement Preliminaries

This chapter provides general service information for the workstation. Adherence to the procedures and precautions described in this chapter is essential for proper service.

CAUTION: When the workstation is plugged into an AC power source there is always

voltage applied to the system board. You must disconnect the power cord from the power source before opening the workstation to prevent system board or component damage.

3.1 Electrostatic Discharge Information

A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not appear to be affected at all and can work perfectly throughout a normal cycle. The device may function normally for a while, but it has been degraded in the internal layers, reducing its life expectancy.

Circuitry built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.

Maintenance & Service Guide 3–1

Removal & Replacement Preliminaries

3.1.1 Generating Static

The following table shows that:

■ Different activities generate different amounts of static electricity.

■ Static electricity increases as humidity decreases.

Event 55% 40% 10%

Walking across carpet 7,500 V 15,000 V 35,000 V

Walking across vinyl floor 3,000 V 5,000 V 12,000 V

Motions of bench worker 400 V 800 V 6,000 V

Removing DIPs* from plastic tube 400 V 700 V 2,000 V

Removing DIPs* from vinyl tray 2,000 V 4,000 V 11,500 V

Removing DIPs* from Styrofoam 3,500 V 5,000V 14,500 V

Removing bubble pack from PCB 7,000 V 20,000 V 26,500 V

Packing PCBs in foam-lined box 5,000 V 11,000 V 21,000 V

Relative Humidity

*These are then multi-packaged inside plastic tubes, trays, or Styrofoam.

700 volts can degrade a product.

✎

3.1.2 Preventing Electrostatic Damage to Equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following proper packaging and grounding precautions are necessary to prevent damage to electric components and accessories.

■ To avoid hand contact, transport products in static-safe containers such as tubes, bags,

or boxes.

■ Protect all electrostatic parts and assemblies with conductive or approved containers or

packaging.

■ Keep electrostatic sensitive parts in their containers until they arrive at static-free

stations.

■ Place items on a grounded surface before removing them from their container.

■ Always be properly grounded when touching a sensitive component or assembly.

■ Avoid contact with pins, leads, or circuitry.

■ Place reusable electrostatic-sensitive parts from assemblies in protective packaging or

conductive foam.

3–2 Maintenance & Service Guide

Removal & Replacement Preliminaries

3.1.3 Personal Grounding Methods and Equipment

Use the following equipment to prevent static electricity damage to equipment:

■ Wrist straps are flexible straps with a maximum of one-megohm +/- 10% resistance in

the ground cords. Toprovide proper ground, a strap must be worn snug against bare skin. The ground cord must be connected and fit snugly into the banana plug connector on the grounding mat or workstation.

■ Heel straps/Toe straps/Boot straps can be used at standing workstations and are

compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with a maximum of one-megohm +/- 10% resistance between the operator and ground.

Static Shielding Protection Levels

Method Voltage

Antistatic plastic 1,500

Carbon-loaded plastic 7,500

Metallized laminate 15,000

3.1.4 Grounding the Work Area

To prevent static damage to the work area, use the following precautions:

■ Cover the work surface with approved static-dissipative material. Provide a wrist strap

connected to the work surface and properly grounded tools and equipment.

■ Use static-dissipative mats, foot straps, or air ionizers to give added protection.

■ Handle electrostatic sensitive components, parts, and assemblies by the case or PCB

laminate. Handle them only at static-free work areas.

■ Turn off power and input signals before inserting and removing connectors or test

equipment.

■ Use fixtures made of static-safe materials when fixtures must directly contact dissipative

surfaces.

■ Keep work area free of nonconductive materials such as ordinary plastic assembly aids

and Styrofoam.

■ Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

Maintenance & Service Guide 3–3

Removal & Replacement Preliminaries

3.1.5 Recommended Materials and Equipment

Materials and equipment that are recommended for use in preventing static electricity include:

■ Antistatic tape

■ Antistatic smocks, aprons, or sleeve protectors

■ Conductive bins and other assembly or soldering aids

■ Conductive foam

■ Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance

■ Static-dissipative table or floor mats with hard tie to ground

■ Field service kits

■ Static awareness labels

■ Wrist straps and footwear straps providing one-megohm +/- 10% resistance

■ Material handling packages

■ Conductive plastic bags, opaque shielding bags, transparent metallized shielding bags

■ Conductive plastic tubes

■ Conductive tote boxes

■ Transparent shielding tubes

3–4 Maintenance & Service Guide

3.2 Routine Care

3.2.1 General Cleaning Safety Precautions

1. Never use solvents or flammable solutions to clean the workstation.

2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use the cloth on the component.

3. Always unplug the workstation when cleaning with liquids or damp cloths.

4. Always unplug the workstation before cleaning the keyboard, mouse, or air vents.

5. Disconnect the keyboard before cleaning it.

6. Wear safety glasses equipped with side shields when cleaning the keyboard.

3.2.2 Cleaning the Chassis Exterior

Follow all safety precautions in Section 3.2.1 before cleaning the workstation.

■ To clean the workstation case, follow the procedures described below:

■ To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.

Removal & Replacement Preliminaries

■ For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by

wiping it with a cloth or swab dampened with clear water.

■ For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol

will evaporate quickly and not leave a residue.

■ After cleaning, always wipe the unit with a clean, lint-free cloth.

■ Occasionally clean the air vents on the workstation. Lint and other foreign matter can

block the vents and limit the airflow.

3.2.3 Cleaning the Keyboard

Follow all safety precautions in Section 3.2.1 before cleaning the keyboard. To clean the tops of the keys or the keyboard body, follow the procedures described in

Section 3.2.2. When cleaning debris from under the keys, review all rules in Section 3.2.1 before following

these procedures:

CAUTION: Use safety glasses equipped with side shields before attempting to clean

debris from under the keys.

■ Visible debris underneath or between the keys may be removed by vacuuming or

shaking.

■ Canned, pressurized air may be used to clean debris from under the keys. Caution should

be used as too much air pressure can dislodge lubricants applied under the wide keys.

■ If you remove a key, use a specially designed key puller to prevent damage to the keys.

This tool is available through many electronic supply outlets.

Maintenance & Service Guide 3–5

Removal & Replacement Preliminaries

CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If

these keys are improperly removed or installed, the keyboard may not function properly.

■ Cleaning under a key may be done with a swab moistened with isopropyl alcohol and

squeezed out. Be careful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly.

3.2.4 Cleaning the Monitor

■ Wipe the monitor screen with a clean cloth moistened with water or with a towelette

designed for cleaning monitors. Do not use sprays or aerosols directly on the screen, the liquid may seep into the housing and damage a component. Never use solvents or flammable liquids on the monitor.

■ To clean the monitor body follow the procedures in Section 3.2.2.

3.2.5 Cleaning the Mouse

Before cleaning the mouse, ensure that the power to the workstation is turned off.

■ Clean the mouse ball by first removing the retaining plate and the ball from the housing.

Pull out any debris from the ball socket and wipe the ball with a clean dry cloth before reassembly.

■ To clean the mouse body, follow the procedures in Section 3.2.2.

3.3 Service Considerations

Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the workstation.

3.3.1 Power Supply Fan

The power supply fan is a variable-speed fan based on the temperature in the power supply.

CAUTION: The cooling fan is off only when the workstation is turned off or the power

cable has been disconnected.

The cooling fan is always on in all other instances (when the workstation is either in the “On,” “Standby,” or “Suspend” mode).

You must disconnect the power cord from the power source before opening the workstation to prevent system board or component damage.

3–6 Maintenance & Service Guide

3.3.2 Tools and Software Requirements

To service the workstation, you need the following:

■ Torx T-15 screwdriver (Compaq screwdriver with bits, PN 161946-001)

■ Phillips screwdriver (may sometimes be used in place of the Torx screwdriver)

■ Diagnostics software

■ Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or

Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002)

3.3.3 Screws

The screws used in the workstation are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. Compaq strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

As each subassembly is removed from the workstation, it should be placed away

✎

from the work area to prevent damage.

Removal & Replacement Preliminaries

3.3.4 Cables and Connectors

Most cables used throughout the unit are flat, flexible cables. These cables must be handled with care to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced.

CAUTION: When servicing this workstation, ensure that cables are placed in their proper

location during the reassembly process. Improper cable placement can damage the workstation.

3.3.5 Hard Drives

Handle hard drives as delicate precision components, avoiding all physical shock and vibration. This applies to failed drives as well as replacement spares.

■ If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable

protective packaging and label the package “Fragile: Handle With Care.”

■ Do not remove hard drives from the shipping package for storage. Keep hard drives in

their protective packaging until they are actually mounted in the CPU.

■ Avoid dropping drives from any height onto any surface.

■ If you are inserting or removing a hard drive, turn off the workstation. Do not remove a

hard drive while the workstation is on or in standby mode.

Maintenance & Service Guide 3–7

Removal & Replacement Preliminaries

■ Before handling a drive, ensure that you are discharged of static electricity. While

handling a drive, avoid touching the connector. For more information about preventing electrostatic damage, refer to Section 3.1, “Electrostatic Discharge.”

■ Do not use excessive force when inserting a drive.

■ Avoid exposing a hard drive to liquids, temperature extremes, or products that have

magnetic fields such as monitors or speakers.

3.3.6 Lithium Coin Cell Battery

The battery that comes with the workstation provides power to the real-time clock and has a minimum lifetime of about three years.

See Chapter 4, “Removal and Replacement Procedures,” for instructions on the replacement procedures.

WARNING: This workstation contains a lithium battery. There is a risk of fire and

chemical burn if the battery is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or fire, or expose it to temperatures higher than 140°F (60°C).

CAUTION: Batteries, battery packs, and accumulators should not be disposed of

together with the general household waste.

3–8 Maintenance & Service Guide

Removal & Replacement Procedures

This chapter provides general service information for the workstation. Adherence to the procedures and precautions described in this chapter is essential for proper service.

After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly.

4.1 Disassembly Sequence Chart

Use the chart below to determine the disassembly sequence for removing components from the workstation.

4.3 Cable Lock

4.4 Workstation Feet

4.5 Access Panel

4.6 Battery

4.7 Hood Sensor

4.8 Shipping Bracket

4.9.2

4.9.6 RIMM Installation

4.10 Front Bezel

4.11 Blank Drive Bezel

4.12 Front I/O Board and Power Switch Assembly

4.13 EMI/Cooling Shield

4.14.3 Hard Drive from Bays 5 or 6

4.14.4 CD-ROM Drive

4.14.5 Diskette Drive

4.15.1

4.16.1 Main Air Baffle

4.16.2 Power Supply Air Baffle

4.17 Power Supply

4.18.1 Removable Hard Drive Cage

4.18.2 Hard Drive from Removable Hard Drive Cage

4.19.2 Heatsink and Processor

4.20 System Board*

4.21 Rear Fan

4.22 Processor Fan

4.23 Speaker

4.24

4.25 Air Plenum Fan

Expansion Boards*

Memory Expansion Board*

Card Guide*

*These steps are interdependent.

Maintenance & Service Guide 4–1

Removal & Replacement Procedures

4.2 Preparation for Disassembly

See Chapter 3, “Removal and Replacement Preliminaries,” for initial procedures.

1. Close any open software applications.

2. Exit the operating system.

3. Remove any diskette or compact disc from the workstation.

4. Turn off the workstation and any peripheral devices that are connected to it.

CAUTION: Turn off the workstation before disconnecting any cables.

5. Disconnect the power cord from the grounded AC outlet and then from the workstation.

CAUTION: The power supply in the W8000 has an auxiliary power section. This section

is always active as long as the unit is plugged into a live AC outlet. Be sure to turn off the switch and unplug the power cord before performing any service work.

CAUTION: Electrostatic discharge can damage electronic components of the

workstation. Before beginning these procedures, be sure you are properly grounded. See Chapter 3, “Removal and Replacement Preliminaries” for more information.

6. Disconnect all peripheral device cables from the workstation.

During disassembly, label each cable as you remove it, noting its position and

✎

routing. Keep all screws with the units removed.

In some of the removal procedures in this chapter, you will be asked to place the

✎

workstation on its side when servicing certain internal components.

CAUTION: The screws used in the workstation are of different thread sizes and lengths;

using the wrong screw in an application may damage the unit.

4–2 Maintenance & Service Guide

4.3 Cable Lock

The workstation comes standard with a cable lock provision for attaching a padlock and/or cable lock. If installed, the locks must be removed before accessing internal components.

1. Unlock and remove the cable lock or the padlock.

Removal & Replacement Procedures

2. Remove the security bracket (plate) seated over the cable lock bracke

3. Unfasten the retaining screw to release the cable lock bracket.

Maintenance & Service Guide 4–3

Removal & Replacement Procedures

4.4 Workstation Feet

Four (4) rubber feet are mounted to the chassis, as shown below. No parts have to be removed to access the feet. The replacement feet have an adhesive surface and are shipped with a protective backing in place. Remove the backing from the feet before installation.

If necessary, remove the old feet and remove any adhesive residue from the chassis.

To replace the feet, reverse the above procedure.

4–4 Maintenance & Service Guide

+ 56 hidden pages