HP EliteDesk 800 G1 Service and Maintain

Maintenance & Service Guide

HP EliteDesk 800 G1 Desktop Mini HP ProDesk 600 G1 Desktop Mini

Microsoft and Windows are U.S. registered trademarks of the Microsoft group of companies.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

This document contains proprietary information that is protected by copyright. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company.

Maintenance & Service Guide

First Edition (April 2014)

Document Part Number: 756964-001

Product notice

This guide describes features that are common to most models. Some features may not be available on your computer.

Not all features are available on all editions of Windows 8. This computer may require upgraded and/or separately purchased hardware, drivers, and/or software to take full advantage of Windows 8 functionality.

http://www.microsoft.com for details.

See

This computer may require upgraded and/ or separately purchased hardware and/or a DVD drive to install the Windows 7 software and take full advantage of Windows 7 functionality. See

http://windows.microsoft.com/en-us/ windows7/get-know-windows-7 for details.

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not

place the device directly on your lap or obstruct the device air vents. Use the device only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible surface temperature limits defined by the International Standard for Safety of Information Technology Equipment (IEC 60950).

iii

iv Safety warning notice

Table of contents

1 Product features ............................................................................................................... 1

Standard configuration features ................................................................................................. 1

Front panel components ............................................................................................................ 2

Rear panel components (EliteDesk 800) ...................................................................................... 3

Rear panel components (ProDesk 600) ....................................................................................... 4

Serial number location .............................................................................................................. 5

2 Activating and Customizing the Software .......................................................................... 6

Activating and customizing the software in Windows 7 ................................................................ 6

Activating the Windows operating system .................................................................... 6

Downloading Windows 7 updates .............................................................................. 7

Installing or upgrading device drivers .......................................................................... 7

Customizing the monitor display ................................................................................. 7

Activating and customizing the software in Windows 8 ................................................................ 7

Activating the Windows Operating System ................................................................... 7

Downloading Windows 8 updates .............................................................................. 8

Customizing the monitor display ................................................................................. 8

3 Routine care, SATA drive guidelines, and disassembly preparation ................................... 9

Electrostatic discharge information ............................................................................................. 9

Generating static .................................................................................................... 10

Preventing electrostatic damage to equipment ............................................................. 10

Personal grounding methods and equipment .............................................................. 11

Grounding the work area ......................................................................................... 11

Recommended materials and equipment .................................................................... 11

Operating guidelines .............................................................................................................. 12

Routine care .......................................................................................................................... 13

General cleaning safety precautions .......................................................................... 13

Cleaning the Computer Case .................................................................................... 13

Cleaning the keyboard ............................................................................................ 13

Cleaning the monitor ............................................................................................... 14

Cleaning the mouse ................................................................................................. 14

Service considerations ............................................................................................................ 14

Tools and software Requirements .............................................................................. 14

Screws ................................................................................................................... 15

Cables and connectors ............................................................................................ 15

Hard Drives ............................................................................................................ 15

Lithium coin cell battery ............................................................................................ 16

SATA hard drives ................................................................................................................... 16

SATA hard drive cables .......................................................................................................... 17

SATA data cable ..................................................................................................... 17

SMART ATA drives ................................................................................................................. 17

Cable management ................................................................................................................ 17

4 Illustrated parts catalog .................................................................................................. 18

Misc parts ............................................................................................................................. 20

Cables .................................................................................................................................. 21

Drives ................................................................................................................................... 22

Sequential Part Number Listing ................................................................................................ 22

5 Removal and Replacement Procedures ...................................... 25

Preparing to disassemble the computer ..................................................................................... 25

Access panel ......................................................................................................................... 26

Changing from desktop to tower configuration .......................................................................... 27

Hard drive ............................................................................................................................ 28

Speaker ................................................................................................................................ 32

Front bezel ............................................................................................................................ 34

Memory ................................................................................................................................ 35

SODIMMs .............................................................................................................. 35

DDR3-SDRAM SODIMMs ......................................................................................... 35

Populating SODIMM sockets .................................................................................... 36

Installing SODIMMs ................................................................................................ 37

Replacing the battery .............................................................................................................. 40

Heat sink .............................................................................................................................. 43

Processor .............................................................................................................................. 44

Fan ...................................................................................................................................... 46

Drive cage ............................................................................................................................ 47

WLAN module ...................................................................................................................... 49

M.2 Solid-State Drive .............................................................................................................. 51

External connection antennas (select models only) ...................................................................... 53

System board ........................................................................................................................ 57

WLAN antennas .................................................................................................................... 60

6 Computer Setup (F10) Utility ........................................................................................... 64

Computer Setup (F10) Utilities ................................................................................................. 64

Using Computer Setup (F10) Utilities .......................................................................... 65

Computer Setup—File .............................................................................................. 66

Computer Setup—Storage ........................................................................................ 67

Computer Setup—Security ........................................................................................ 69

Computer Setup—Power .......................................................................................... 73

Computer Setup—Advanced .................................................................................... 74

Recovering the Configuration Settings ....................................................................................... 77

7 HP PC Hardware Diagnostics .......................................................................................... 78

Why run HP PC Hardware Diagnostics – UEFI ........................................................................... 78

How to access and run HP PC Hardware Diagnostics - UEFI ........................................................ 78

Downloading HP PC Hardware Diagnostics to a USB device ....................................................... 79

8 Troubleshooting Without Diagnostics .............................................................................. 80

Safety and Comfort ................................................................................................................ 80

Before You Call for Technical Support ...................................................................................... 80

Helpful Hints .......................................................................................................................... 81

Solving General Problems ....................................................................................................... 83

Solving Power Problems .......................................................................................................... 87

Solving Hard Drive Problems ................................................................................................... 89

Solving Media Card Reader Problems ...................................................................................... 92

Solving Display Problems ........................................................................................................ 94

Solving Audio Problems .......................................................................................................... 99

Solving Printer Problems ........................................................................................................ 101

Solving Keyboard and Mouse Problems .................................................................................. 103

Solving Hardware Installation Problems .................................................................................. 105

Solving Network Problems .................................................................................................... 107

Solving Memory Problems ..................................................................................................... 111

Solving Processor Problems ................................................................................................... 113

Solving CD-ROM and DVD Problems ...................................................................................... 114

Solving USB Flash Drive Problems .......................................................................................... 116

Solving Front Panel Component Problems ................................................................................ 117

Solving Internet Access Problems ............................................................................................ 118

Solving Software Problems .................................................................................................... 119

Contacting Customer Support ................................................................................................ 121

vii

9 Backup and Recovery ................................................................................................... 122

Restoring and recovering in Windows 7 ................................................................................. 122

System Restore ...................................................................................................... 122

System Recovery ................................................................................................... 123

System Recovery when Windows is responding ......................................... 123

System Recovery when Windows is not responding .................................... 124

System recovery using recovery media ...................................................... 124

Creating recovery media .......................................................... 125

Using recovery media .............................................................. 126

Backup and recovery in Windows 8 ....................................................................................... 127

Backing up your information ................................................................................... 127

Performing a system recovery ................................................................................. 128

Using the Windows recovery tools ........................................................... 128

Using f11 recovery tools ......................................................................... 129

Using Windows 8 operating system media (purchased separately) ............... 129

10 POST Error Messages .................................................................................................. 131

POST Numeric Codes and Text Messages ............................................................................... 132

Interpreting POST diagnostic front panel LEDs .......................................................................... 140

11 Password Security and Resetting CMOS ...................................................................... 143

Establishing a Setup or Power-on password ............................................................................. 144

Resetting the Setup and Power-on password ............................................................................ 145

Clearing and resetting the CMOS .......................................................................................... 146

Appendix A Power Cord Set Requirements ...................................................................... 148

General requirements ........................................................................................................... 148

Japanese Power Cord Requirements ....................................................................................... 148

Country-specific requirements ................................................................................................ 149

Appendix B Statement of Volatility–HP EliteDesk 800 G1 ................................................. 150

Appendix C Statement of Volatility–HP ProDesk 600 G1 .................................................. 152

Appendix D Specifications ............................................................................................... 154

Index ............................................................................................................................... 156

viii

1 Product features

Standard configuration features

Features may vary depending on the model. For a complete listing of the hardware and software installed in the computer, run the diagnostic utility (included on some computer models only).

NOTE: This computer model can be used in a tower orientation or a desktop orientation. The tower

stand is sold separately.

Standard configuration features

Front panel components

Drive configuration may vary by model. Some models have a bezel blank covering one or more drive bays.

1 Dual-State Power Button 4 USB 3.0 Port - Charging

2 Hard Drive Activity Light 5 Microphone/Headphone Connector

3 USB 3.0 Port 6 Headphone Connector

NOTE: The USB 3.0 Port - Charging also provides current to charge a device such as a Smart Phone. The

charging current is available whenever the power cord is plugged into the system, even when the system is off.

NOTE: When a device is plugged into the Microphone/Headphone Connector, a dialog box will pop up asking if

you want to use the connector for a microphone Line-In device or a headphone. You can reconfigure the connector at any time by double-clicking the Audio Manager icon in the Windows taskbar.

NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the

computer and it is displaying a diagnostic code. Refer to the

on page 140 to interpret the code.

Interpreting POST diagnostic front panel LEDs

2 Chapter 1 Product features

Rear panel components (EliteDesk 800)

1 DisplayPort Monitor Connectors 4 USB 3.0 Ports (blue)

VGA Monitor Connector 5 RJ-45 Network Connector

Line-Out Connector for powered audio devices (green)

6 Power Cord Connector

Rear panel components (EliteDesk 800)

Rear panel components (ProDesk 600)

1 DisplayPort Monitor Connectors 5 USB 3.0 Ports (blue)

VGA Monitor Connector 6 RJ-45 Network Connector

Line-Out Connector for powered audio devices (green)

USB 2.0 Ports (black)

7 Power Cord Connector

4 Chapter 1 Product features

Serial number location

Each computer has a unique serial number and a product ID number that are located on the exterior of the computer. Keep these numbers available for use when contacting customer service for assistance.

Serial number location

2 Activating and Customizing the

Software

NOTE: This chapter provides information for both Windows 7 and Windows 8.

Activating and customizing the software in Windows 7

If your computer was not shipped with a Windows® operating system, some portions of this documentation do not apply. Additional information is available in online help after you activate the operating system.

CAUTION: Do not add optional hardware or third-party devices to the computer until the operating

system is successfully activated. Doing so may cause errors and prevent the operating system from installing properly.

NOTE: Be sure there is a 10.2 cm (4 inch) clearance at the back of the unit and above the monitor to

permit the required airflow.

Activating the Windows operating system

The first time you turn on the computer, the operating system is set up and activated automatically. This process takes about 5 to 10 minutes. Carefully read and follow the instructions on the screen to complete the activation.

We recommend that you register your computer with HP during operating system setup so you can receive important software updates, facilitate support questions, and sign up for special offers.

CAUTION: After the activation process has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE

PROCESS IS COMPLETE. Turning off the computer during the activation process may damage the software that runs the computer or prevent its proper installation.

NOTE: If the computer shipped with more than one operating system language on the hard drive, the

activation process could take up to 60 minutes.

6 Chapter 2 Activating and Customizing the Software

Downloading Windows 7 updates

Microsoft may release updates to the operating system. To help keep the computer running optimally, HP recommends checking for the latest updates during the initial installation and periodically throughout the life of the computer.

1. To set up your Internet connection, click Start > Internet Explorer and follow the instructions

on the screen.

2. After an Internet connection has been established, click the Start > All Programs > Windows

Update.

3. Run Windows Update monthly thereafter.

Installing or upgrading device drivers

When installing optional hardware devices after the operating system installation is complete, you must also install the drivers for each of the devices.

In Windows 7, if prompted for the i386 directory, replace the path specification with C:\i386, or use the Browse button in the dialog box to locate the i386 folder. This action points the operating system to the appropriate drivers.

Obtain the latest support software, including support software for the operating system, from

http://www.hp.com/support. Select your country and language, select Download drivers and

software (and firmware), enter the model number of the computer, and press Enter.

Customizing the monitor display

If you wish, you can select or change the monitor refresh rates, screen resolution, color settings, font sizes, and power management settings.

For more information, refer to the online documentation provided with the graphics controller utility or the documentation that came with your monitor.

Right-click on the Windows desktop, then click Personalize to change display settings.

Activating and customizing the software in Windows 8

Additional information is available in online help after you activate the operating system.

NOTE: Be sure there is a 10.2 cm (4 inch) clearance at the back of the unit and above the monitor to

permit the required airflow.

Activating the Windows Operating System

Activating and customizing the software in Windows 8

We recommend that you register your computer with HP during operating system set up so you can receive important software updates, facilitate support questions, and sign up for special offers. You can also register your computer with HP using the Register with HP app on the Start screen.

CAUTION: After the activation process has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE

PROCESS IS COMPLETE. Turning off the computer during the activation process may damage the software that runs the computer or prevent its proper installation.

Downloading Windows 8 updates

Run Windows Update as soon as possible after you set up your computer.

1. Point to the upper-right or lower-right corner of the Start screen to display the charms.

2. Click Settings > Change PC Settings > Windows Update.

3. Run Windows Update monthly thereafter.

Customizing the monitor display

You can customize display settings for Windows 8 separately for the Start screen and the Desktop.

To customize the Start screen:

1. Point to the upper-right or lower-right corner of the Start screen to display the charms.

2. Click Settings > Change PC Settings.

3. Click Personalize to change the display settings.

To customize the Desktop:

1. Click the Desktop app on the Start screen.

2. Right-click on the desktop, and then click Personalize to change display settings.

8 Chapter 2 Activating and Customizing the Software

3 Routine care, SATA drive

guidelines, and disassembly preparation

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

CAUTION: When the computer is plugged into an AC power source, voltage is always applied to

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

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.

Networks 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.

Electrostatic discharge information

Generating static

The following table shows that:

Different activities generate different amounts of static electricity.

●

Static electricity increases as humidity decreases.

●

Relative Humidity

Event 55% 40% 10%

Walking across carpet

Walking across vinyl floor

Motions of bench worker

Removing DIPs from plastic tube

Removing DIPs from vinyl tray

Removing DIPs from Styrofoam

Removing bubble pack from PCB

Packing PCBs in foam-lined box

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

7,500 V

3,000 V

400 V

2,000 V

3,500 V

7,000 V

5,000 V

NOTE: 700 volts can degrade a product.

Preventing electrostatic damage to equipment

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

15,000 V

5,000 V

800 V

700 V

4,000 V

5,000 V

20,000 V

11,000 V

35,000 V

12,000 V

6,000 V

2,000 V

11,500 V

14,500 V

26,500 V

21,000 V

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.

10 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

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. To provide 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

Carbon-loaded plastic

Metallized laminate

Grounding the work area

To prevent static damage at 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.

1,500

7,500

15,000

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

●

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

●

Electrostatic discharge information

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

●

Conductive plastic tubes

●

Conductive tote boxes

●

Opaque shielding bags

●

Transparent metallized shielding bags

●

Transparent shielding tubes

●

Operating guidelines

To prevent overheating and to help prolong the life of the computer:

Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.

●

Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented

●

sides of the computer and above the monitor to permit the required airflow.

Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the

●

keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow.

Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign

●

matter can block the vents and limit the airflow. Be sure to unplug the computer before cleaning the air vents.

Never operate the computer with the cover or side panel removed.

●

Do not stack computers on top of each other or place computers so near each other that they are

●

subject to each other’s re-circulated or preheated air.

If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must

●

be provided on the enclosure, and the same operating guidelines listed above will still apply.

Keep liquids away from the computer and keyboard.

●

12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Never cover the ventilation slots on the monitor with any type of material.

●

Install or enable power management functions of the operating system or other software, including

●

sleep states.

Routine care

General cleaning safety precautions

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

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 computer when cleaning with liquids or damp cloths.

4. Always unplug the computer 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.

Cleaning the Computer Case

Follow all safety precautions in General cleaning safety precautions on page 13 before cleaning the computer.

To clean the computer case, follow the procedures described below:

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

●

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 computer. Lint and other foreign matter can block the vents

●

and limit the airflow.

Cleaning the keyboard

Follow all safety precautions in General cleaning safety precautions on page 13 before cleaning the keyboard.

To clean the tops of the keys or the keyboard body, follow the procedures described in

Computer Case on page 13.

When cleaning debris from under the keys, review all rules in

on page 13 before following these procedures:

General cleaning safety precautions

Routine care

Cleaning the

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.

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.

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

●

Cleaning the mouse

Before cleaning the mouse, ensure that the power to the computer 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

●

Service considerations

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

Tools and software Requirements

To service the computer, you need the following:

Torx T-15 screwdriver

●

Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)

●

Cleaning the Computer Case on page 13.

Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)

●

Phillips #2 screwdriver

●

14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Diagnostics software

●

Tamper-resistant T-15 wrench

●

Screws

The screws used in the computer 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. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

CAUTION: Metric screws have a black finish. U.S. screws have a silver finish and are used on hard

drives only.

CAUTION: As each subassembly is removed from the computer, it should be placed away from the

work area to prevent damage.

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 computer, ensure that cables are placed in their proper location

during the reassembly process. Improper cable placement can damage the computer.

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 computer. Do not remove a hard drive

●

while the computer is on or in standby mode.

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

Do not use excessive force when inserting a drive.

●

Electrostatic discharge information on page 9

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

●

fields such as monitors or speakers.

Service considerations

Lithium coin cell battery

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

See the appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement procedures.

WARNING! This computer 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 140ºF (60ºC). Do not attempt to recharge the battery.

NOTE: Batteries, battery packs, and accumulators should not be disposed of together with the

general household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents.

SATA hard drives

Serial ATA Hard Drive Characteristics

Number of pins/conductors in data cable 7/7

Number of pins in power cable 15

Maximum data cable length 39.37 in (100 cm)

Data interface voltage differential 400-700 mV

Drive voltages 3.3 V, 5 V, 12 V

Jumpers for configuring drive N/A

Data transfer rate 3.0 Gb/s

16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

SATA hard drive cables

SATA data cable

Always use an HP approved SATA 3.0 Gb/s cable as it is fully backwards compatible with the SATA

1.5 Gb/s drives.

Current HP desktop products ship with SATA 3.0 Gb/s hard drives.

SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and never bend it tighter than a 30 mm (1.18 in) radius.

The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive.

SMART ATA drives

The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers have built-in drive failure prediction that warns the user or network administrator of an impending failure or crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as reallocated sector count, spin retry count, and calibration retry count. If the drive determines that a failure is imminent, it generates a fault alert.

Cable management

Always follow good cable management practices when working inside the computer.

Keep cables away from major heat sources like the heat sink.

●

Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these

●

are not designed to take excessive pressure on them.

Keep cables clear of sliding or moveable parts to prevent them from being cut or crimped when

●

the parts are moved.

When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the

●

wires.

Some flat ribbon cables come prefolded. Never change the folds on these cables.

●

Do not bend any cable sharply. A sharp bend can break the internal wires.

●

Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.

●

Never crease a SATA data cable.

●

Do not rely on components like the drive cage, power supply, or computer cover to push cables

●

down into the chassis. Always position the cables to lay properly by themselves.

SATA hard drive cables

4 Illustrated parts catalog

NOTE: HP continually improves and changes product parts. For complete and current information on

supported parts for your computer, go to then follow the on-screen instructions.

Item Description Spare part number

(1) Access panel 768428-001

(2) Front bezel

For use in EliteDesk 800 models 768422-001

For use in ProDesk 600 models 768742-001

18 Chapter 4 Illustrated parts catalog

http://partsurfer.hp.com, select your country or region, and

Item Description Spare part number

Stand 768430-001

Power supply, 65W 751889-001

(3) System board (includes replacement thermal material)

For use in EliteDesk 800 models:

For use in ProDesk 800 models:

Memory module, PC3-12800, 1666-MHz

4 GB 689373-001

8 GB 689374-001

Processors (include replacement thermal material)

Intel Core i7 4785T processor, 2.2 GHz, 8-MB L3 cache, 35W 773230-001

Intel Core i7 4765T processor, 2.0 GHz, 8-MB L3 cache, 35W 754000-001

Intel Core i5 4590T processor, 2.0 GHz, 6-MB L3 cache, 35W 773228-001

For use in models without the-Windows 8 operating system 746632-001

●

For use in models with Windows 8 Standard 746632-501

●

For use in models with Windows 8 Professional 746632-601

●

For use in models without the-Windows 8 operating system 746722-001

●

For use in models with Windows 8 Standard 746722-501

●

For use in models with Windows 8 Professional 746722-601

●

For use in models with NetClone operating system 765381-001

●

Intel Core i5 4570T processor, 2.9 GHz, 4-MB L3 cache, 35W 753998-001

Intel Core i3 4330T processor, 3.0 GHz, 4-MB L3 cache, 35W 753995-001

Intel Core i3 4150T processor, 3.0 GHz, 3-MB L3 cache, 35W (ProDesk 600 models

only)

Intel Core i3 4130T processor, 2.9 GHz, 3-MB L3 cache, 35W 757416-001

Intel Pentium G3440T processor, 2.8 GHz, 3-MB L3 cache, 35W 773233-001

Intel Pentium G3420T processor, 2.7 GHz, 3-MB L3 cache, 35W 763217-001

Intel Pentium G3240T processor, 2.7 GHz, 3-MB L3 cache, 35W 773232-001

Intel Pentium G3220T processor, 2.6 GHz, 3-MB L3 cache, 35W 763216-001

Intel Celeron G1840T processor, 2.5 GHz, 2-MB L3 cache, 35W 773225-001

Intel Celeron G1820T processor, 2.4 GHz, 2-MB L3 cache, 35W 753994-001

Keyboards

USB, Smartcard, CCID 701671-xx1

USB 724720-xx1

773226-001

Item Description Spare part number

PS2, washable 700510-xx1

Wireless keyboard and dongle for use in Brazil 724722-201

Wireless keyboard, mouse, and dongle 730323-xx1

Misc parts

Description Spare part number

(1) Heat sink 768426-001

(2) Fan 768424-001

(3) Speaker 762420-001

(4) LED cover 768425-001

Hood sensor assembly 768429-001

Antenna cover 768433-001

Grommet for use mounting hard drives 594220-001

HP Ultraslim Keyed Cable Lock 703372-001

20 Chapter 4 Illustrated parts catalog

Description Spare part number

WLAN modules:

HP WLAN 802.11 a/b/g/n, 2x2 768423-001

HP WLAN 802.11 a/g/n, for use only in Indonesia 750552-001

Mouse

USB, optical 674316-001

Wireless 674317-001

USB, laser 674318-001

Washable 724795-001

Cables

Description Spare part number

(1) SATA power cable 768427-001

Wireless antenna cables 768432-001

Adapter, DisplayPort to VGA 632484-001

Adapter, DisplayPort to DVI 662723-001

Adapter, DisplayPort to HDMI 617450-001

DisplayPort cable 487562-001

USB to serial converter 407185-001

Cables

Drives

Description Spare part number

Hard drives/solid-state/M.2 drives:

1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD 724937-001

500 GB, 7200 rpm hard drive, 2.5-inch 745135-001

500 GB, 7200 rpm, hard drive, 2.5-inch, SSHD 724938-001

500 GB, 7200 rpm hard drive, 2.5-inch, SED 745136-001

256 GB solid-state drive (SSD), self-encrypting (SED) 746141-001

180 GB solid-state drive (SSD), SATA 6.0, MLC 754076-001

128 GB solid-state drive (SSD), M.2 757990-001

128 GB solid-state drive (SSD) 665961-001

128 GB solid-state drive (SSD), Self-encrypting Drive (SED), SATA 6.0 746140-001

120 GB solid-state drive (SSD), SATA 6.0, MLC 756459-001

Sequential Part Number Listing

Spare part number

407185-001 USB to serial converter

487562-001 DisplayPort cable

594220-001 Grommet for use mounting hard drives

617450-001 Display Port (DP) to HDMI

632484-001 Display Port (DP) to VGA

662723-001 Display Port (DP) to DVI

665961-001 128 GB solid-state drive (SSD)

674316-001 Mouse, USB, optical

674317-001 Mouse, wireless

674318-001 Mouse, USB, laser

689373-001 4-GB memory module, PC3-12800, 1666-MHz

689374-001 8-GB memory module, PC3-12800, 1666-MHz

Description

700510-xx1 Keyboard, PS2, washable

701671-xx1 Keyboard, USB, Smartcard, CCID

703372-001 HP Ultraslim Keyed Cable Lock

22 Chapter 4 Illustrated parts catalog

Spare part number

724720-xx1 Keyboard, USB

724722-201 Keyboard, wireless keyboard and dongle for use in Brazil

724795-001 Mouse, washable

724937-001 1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD

724938-001 500 GB, 7200 rpm, hard drive, 2.5-inch, SSHD

730323-xx1 Keyboard, wireless keyboard, mouse, and dongle

745135-001 500 GB, 7200 rpm hard drive, 2.5-inch

745136-001 500 GB, 7200 rpm hard drive, 2.5-inch, SED

746140-001 128 GB solid-state drive (SSD), Self-encrypting Drive (SED), SATA 6.0

746141-001 256 GB solid-state drive (SSD), self-encrypting (SED)

746632-001 System board for use in EliteDesk 800 models without the Windows 8 operating system (includes replacement

746632-501 System board for use in EliteDesk 800 models with Windows 8 Standard (includes replacement thermal

746632-601 System board for use in EliteDesk 800 models with Windows 8 Professional (includes thermal material)

Description

thermal material)

material)

746722-001 System board for use in ProDesk 600 models without the Windows 8 operating system

746722-501 System board for use in ProDesk 600 models with Windows 8 Standard

746722-601 System board for use in ProDesk 600 models with Windows 8 Professional

765381-001 System board for use in ProDesk 600 models with NetClone operating system

750552-001 HP WLAN 802.11 a/g/n, for use only in Indonesia

751889-001 Power supply, external, 65W

753994-001 Intel Celeron G1820T processor, 2.4 GHz, 2-MB L3 cache, 35W

753995-001 Intel Core i3 4330T processor, 3.0 GHz, 4-MB L3 cache, 35W

753998-001 Intel Core i5 4570T processor, 2.9 GHz, 4-MB L3 cache, 35W

754000-001 Intel Core i7 4765T processor, 2.0 GHz, 8-MB L3 cache, 35W

754076-001 180 GB solid-state drive (SSD), SATA 6.0, MLC

756459-001 120 GB solid-state drive (SSD), SATA 6.0, MLC

757416-001 Intel Core i3 4130T processor, 2.9 GHz, 3-MB L3 cache, 35W

757990-001 128 GB solid-state drive (SSD), M.2

762420-001 Speaker

763216-001 Intel Pentium G3220T processor, 2.6 GHz, 3-MB L3 cache, 35W

763217-001 Intel Pentium G3420T processor, 2.7 GHz, 3-MB L3 cache, 35W

768422-001 Front bezel for use on EliteDesk 800 models

Sequential Part Number Listing

Spare part number

768423-001 HP WLAN 802.11 a/b/g/n, 2x2

768424-001 Fan

768425-001 LED cover

768426-001 Heat sink

768427-001 SATA power cable

768428-001 Access panel

768429-001 Hood sensor assembly

768430-001 Stand

768432-001 Wireless antenna cables

768433-001 Antenna cover

768742-001 Front bezel for use on ProDesk 600 models

773225-001 Intel Celeron G1840T processor, 2.5 GHz, 2-MB L3 cache, 35W

773226-001 Intel Core i3 4150T processor, 3.0 GHz, 3-MB L3 cache, 35W (ProDesk 600 models only)

773228-001 Intel Core i5 4590T processor, 2.0 GHz, 6-MB L3 cache, 35W

Description

773230-001 Intel Core i7 4785T processor, 2.2 GHz, 8-MB L3 cache, 35W

773232-001 Intel Pentium G3240T processor, 2.7 GHz, 3-MB L3 cache, 35W

773233-001 Intel Pentium G3440T processor, 2.8 GHz, 3-MB L3 cache, 35W

24 Chapter 4 Illustrated parts catalog

5 Removal and Replacement

Procedures

The following sections provide information about disassembling various components of the computer.

NOTE: HP continually improves and changes product parts. For complete and current information on

supported parts for your computer, go to then follow the on-screen instructions.

Preparing to disassemble the computer

To avoid injury and equipment damage, always complete the following steps in order, when opening the computer.

http://partsurfer.hp.com, select your country or region, and

1. Remove/disengage any security devices that prohibit opening the computer.

2. Remove all removable media, such as a USB flash drive, from the computer.

3. Turn off the computer properly through the operating system, then turn off any external devices.

4. Disconnect the power cord from the power outlet and disconnect any external devices.

CAUTION: Regardless of the power-on state, voltage is always present on the system board as

long as the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to the internal components of the computer.

5. If the computer is on a stand, remove the computer from the stand.

WARNING! Beware of sharp edges inside the chassis.

Preparing to disassemble the computer

Access panel

Description Spare part number

Access panel 768428-001

To access internal components, you must remove the access panel:

1. Prepare the computer for disassembly (see

2. If the computer is on a stand, remove the computer from the stand and lay the computer down.

3. Loosen the thumbscrew on the rear of the computer (1) then slide the panel forward and lift if off

the computer (2).

Preparing to disassemble the computer on page 25).

26 Chapter 5 Removal and Replacement Procedures

Changing from desktop to tower configuration

The computer can be used in a tower orientation with an optional tower stand that can be purchased from HP.

1. Prepare the computer for disassembly (see

2. Orient the computer so that its right side is facing up and place the computer in the optional stand.

NOTE: To stabilize the computer in a tower orientation, HP recommends the use of the optional

tower stand.

3. Reconnect the power cord and any external devices, then turn on the computer.

Preparing to disassemble the computer on page 25).

NOTE: Ensure at least 10.2 centimeters (4 inches) of space on all sides of the computer remains

clear and free of obstructions.

4. Lock any security devices that were disengaged when the access panel was removed.

Changing from desktop to tower configuration

Hard drive

Description Spare part number

1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD 724937-001

500 GB, 7200 rpm hard drive, 2.5-inch 745135-001

500 GB, 7200 rpm, hard drive, 2.5-inch, SSHD 724938-001

500 GB, 7200 rpm hard drive, 2.5-inch, SED 745136-001

256 GB solid-state drive (SSD), self-encrypting (SED) 746141-001

180 GB solid-state drive (SSD), SATA 6.0, MLC 754076-001

128 GB solid-state drive (SSD) 665961-001

128 GB solid-state drive (SSD), Self-encrypting Drive (SED), SATA 6.0 746140-001

120 GB solid-state drive (SSD), SATA 6.0, MLC 756459-001

NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so

that you can transfer the data to the new hard drive.

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 25).

2. Remove the access panel.

3. Disconnect the hard drive power cable (1) and data cable (2) from the system board.

28 Chapter 5 Removal and Replacement Procedures

4. Pull the release lever next to the rear of the hard drive outward (1). While pulling the release lever

out, slide the drive back until it stops, then lift the drive up and out of the bay (2).

5. To install a hard drive, you must transfer the silver and blue isolation mounting guide screws from

the old hard drive to the new hard drive.

Hard drive

6. Transfer the drive cables from the old drive to the new drive.

7. Align the guide screws with the slots on the chassis drive cage, press the hard drive down into the

bay, then slide it forward until it stops and locks in place.

30 Chapter 5 Removal and Replacement Procedures

8. Connect the hard drive power cable (1) and data cable (2) to the system board.

Hard drive

Speaker

Description Spare part number

Speaker 762420-001

A single speaker is located on the left side of the computer behind the front bezel, inside the chassis. It is secured by a white peg that you pull out to release.

To remove the speaker:

1. Prepare the computer for disassembly (see

2. Remove the access panel (see

3. From the front of the computer, pull to remove the white peg that secures the speaker (1).

4. Disconnect the speaker cable from the system board connector (2).

32 Chapter 5 Removal and Replacement Procedures

Access panel on page 26).

Preparing to disassemble the computer on page 25).

5. Lift to remove the speaker from the computer (3).

To install the speaker, reverse the removal procedures.

Speaker

Front bezel

Description Spare part number

Front bezel for use on EliteDesk 800 models 768422-001

Front bezel for use on ProDesk 600 models 768742-001

The front bezel is secured to the access panel by tabs.

To remove the front bezel:

1. Prepare the computer for disassembly (see

2. Remove the access panel (see

3. Position the access panel upside-down so you can access the inside of the bezel.

4. Pull down to loose the bottom, interior on the bezel (1).

5. Disengage the tabs on the top, interior of the bezel (2).

Access panel on page 26).

Preparing to disassemble the computer on page 25).

6. Remove the bezel from the access panel.

To install the front bezel, reverse the removal procedures.

34 Chapter 5 Removal and Replacement Procedures

Memory

Description Spare part number

Memory module, 4-GB 689373-001

Memory module, 8-GB 689374-001

The computer comes with double data rate 3 synchronous dynamic random access memory (DDR3SDRAM) small outline dual inline memory modules (SODIMMs).

SODIMMs

The memory sockets on the system board can be populated with up to two industry-standard SODIMMs. These memory sockets are populated with at least one preinstalled SODIMM. To achieve the maximum memory support, you can populate the system board with up to 16-GB of memory.

DDR3-SDRAM SODIMMs

For proper system operation, the SODIMMs must be:

industry-standard 204-pin

●

unbuffered non-ECC PC3-12800 DDR3-1600 MHz-compliant

●

1.35 volt or 1.5 volt DDR3-SDRAM SODIMMs

●

The DDR3-SDRAM SODIMMs must also:

support CAS latency 11 DDR3 1600 MHz (11-11-11 timing)

●

contain the mandatory Joint Electronic Device Engineering Council (JEDEC) specification

●

In addition, the computer supports:

512-Mbit, 1-Gbit, and 2-Gbit non-ECC memory technologies

●

single-sided and double-sided SODIMMS

●

SODIMMs constructed with x8 and x16 devices; SODIMMs constructed with x4 SDRAM are not

●

supported

NOTE: The system will not operate properly if you install unsupported SODIMMs.

Memory

Populating SODIMM sockets

There are two SODIMM sockets on the system board, with one socket per channel. The sockets are labeled DIMM1 and DIMM3. The DIMM1 socket operates in memory channel B. The DIMM3 socket operates in memory channel A.

Item Description System Board Label Socket Color

1 SODIMM1 socket, Channel B DIMM1 Black

2 SODIMM3 socket, Channel A DIMM3 Black

The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending on how the SODIMMs are installed.

The system will operate in single channel mode if the SODIMM sockets are populated in one

●

channel only.

The system will operate in a higher-performing dual channel mode if the memory capacity of the

●

SODIMM in Channel A is equal to the memory capacity of the SODIMM in Channel B.

The system will operate in flex mode if the memory capacity of the SODIMM in Channel A is not

●

equal to the memory capacity of the SODIMM in Channel B. In flex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. If one channel will have more memory than the other, the larger amount should be assigned to channel A.

In any mode, the maximum operational speed is determined by the slowest SODIMM in the

●

system.

36 Chapter 5 Removal and Replacement Procedures

Installing SODIMMs

CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power

to drain before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory modules while voltage is present may cause irreparable damage to the memory modules or system board.

The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other.

Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. For more information, refer to

When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module.

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 25).

Electrostatic discharge information on page 9.

2. Remove the access panel (see

3. Disconnect the hard drive power cable (1) and data cable (2) from the system board.

WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system

components to cool before touching.

Access panel on page 26).

Memory

4. Pull the release lever next to the rear of the hard drive outward (1). While pulling the release lever

out, slide the drive back until it stops, then lift the drive up and out of the bay (2).

5. To remove a SODIMM, press outward on the two latches on each side of the SODIMM (1) then

pull the SODIMM out of the socket (2).

38 Chapter 5 Removal and Replacement Procedures

6. Slide the new SODIMM into the socket at approximately a 30° angle (1) then press the SODIMM

down (2) so that the latches lock it in place.

NOTE: A memory module can be installed in only one way. Match the notch on the module with

the tab on the memory socket.

7. Replace the hard drive and connect the power and data cables to the system board.

8. Replace the access panel.

9. If the computer was on a stand, replace the stand.

10. Reconnect the power cord and turn on the computer.

11. Lock any security devices that were disengaged when the computer cover or access panel was

removed.

The computer automatically recognizes the additional memory when you turn on the computer.

Memory

Replacing the battery

The battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt lithium coin cell battery.

WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of

fire and burns if the battery is not handled properly. To reduce the risk of personal injury:

Do not attempt to recharge the battery.

Do not expose to temperatures higher than 60°C (140ºF).

Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.

Replace the battery only with the HP spare designated for this product.

CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings.

When the battery is removed or replaced, the CMOS settings will be cleared.

Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live AC

wall socket. The lithium battery is only used when the computer is NOT connected to AC power.

HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, go to

recycle.

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 25).

2. Remove the access panel.

3. Locate the battery and battery holder on the system board.

http://www.hp.com/

40 Chapter 5 Removal and Replacement Procedures

4. Depending on the type of battery holder on the system board, complete the following instructions

to replace the battery.

NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to remove and

replace the battery.

Type 1

a. Pull back on the clip (1) that is holding the battery in place, and lift the battery out of the

holder (2).

b. Pull back on the clip (1) and slide the replacement battery down into the holder (2).

Replacing the battery

Type 2

a. Push the battery toward the outside of the chassis to release it from the holder and lift it out.

b. Lower the battery so that is next to the holder then push it into the holder.

NOTE: After the battery has been replaced, use the following steps to complete this procedure.

5. Replace the computer access panel.

6. Plug in the computer and turn on power to the computer.

7. Reset the date and time, your passwords, and any special system setups using Computer Setup.

8. Lock any security devices that were disengaged when the computer access panel was removed.

42 Chapter 5 Removal and Replacement Procedures

Heat sink

Description Spare part number

Heat sink 768426-001

The heat sink is secured with four captive Torx screws. Be sure to remove and replace the screws in the order indicated on the heat sink.

To remove the heat sink:

1. Prepare the computer for disassembly (see

2. Remove the access panel (see

3. In the order indicated on the heat sink, loosen the four captive Torx screws (1), and then lift the

heat sink out of the computer (2).

CAUTION: Be sure the loosen the screws in the order indicated by the numbers stamped on the

heat sink.

CAUTION: To reduce a degradation in thermal performance, be sure not to touch the thermal

grease on the surface of the processor or the heat sink.

Access panel on page 26).

Preparing to disassemble the computer on page 25).

To replace the heat sink, reverse the removal procedures.

Heat sink

Processor

Description Spare part number

Intel Core i7 4785T processor, 2.2 GHz, 8-MB L3 cache, 35W 773230-001

Intel Core i7 4765T processor, 2.0 GHz, 8-MB L3 cache, 35W 754000-001

Intel Core i5 4590T processor, 2.0 GHz, 6-MB L3 cache, 35W 773228-001

Intel Core i5 4570T processor, 2.9 GHz, 4-MB L3 cache, 35W 753998-001

Intel Core i3 4330T processor, 3.0 GHz, 4-MB L3 cache, 35W 753995-001

Intel Core i3 4150T processor, 3.0 GHz, 3-MB L3 cache, 35W (ProDesk 600 models only) 773226-001