Hp 490 G3 MT, 480 G3 MT, 400 G3 MT User Manual

Maintenance and Service Guide

HP ProDesk 400 G3 MT Business PC HP ProDesk 480 G3 MT Business PC HP ProDesk 490 G3 MT Business PC

AMD is a trademark of Advanced Micro Devices, Inc. Bluetooth is a trademark owned by its proprietor and used by HP Inc. under license. Intel, Celeron, and Pentium are trademarks of Intel Corporation in the U.S. and other countries. Microsoft and Windows are trademarks of the Microsoft group of companies.

The information contained herein is subject to change without notice. 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.

First Edition (November 2015)

Document Part Number: 822843-001

Product notice

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

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

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

Software terms

By installing, copying, downloading, or otherwise using any software product preinstalled on this computer, you agree to be bound by the terms of the HP End User License Agreement (EULA). If you do not accept these license terms, your sole remedy is to return the entire unused product (hardware and software) within 14 days for a full refund subject to the refund policy of your seller.

For any further information or to request a full refund of the price of the computer, please contact your seller.

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, at 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 airow. 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 dened by the International Standard for Safety of Information Technology Equipment (IEC 60950-1).

iii

iv Safety warning notice

Table of contents

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

Standard conguration features ........................................................................................................................... 1

ProDesk 400 ........................................................................................................................................................... 2

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

Rear panel components ...................................................................................................................... 3

ProDesk 480 ........................................................................................................................................................... 4

Front panel components ..................................................................................................................... 4

Rear panel components ...................................................................................................................... 5

ProDesk 490 ........................................................................................................................................................... 6

Front panel components ..................................................................................................................... 6

Rear panel components ...................................................................................................................... 7

Serial number location .......................................................................................................................................... 8

2 Illustrated parts catalog ................................................................................................................................ 9

Computer major components ................................................................................................................................ 9

Misc parts ............................................................................................................................................................. 11

Cables ................................................................................................................................................................... 13

PCIe boards .......................................................................................................................................................... 13

Drives ................................................................................................................................................................... 14

3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................. 15

Electrostatic discharge information .................................................................................................................... 15

Generating static ............................................................................................................................... 15

Preventing electrostatic damage to equipment ............................................................................... 16

Personal grounding methods and equipment .................................................................................. 16

Grounding the work area ................................................................................................................... 16

Recommended materials and equipment ........................................................................................ 17

Operating guidelines ........................................................................................................................................... 17

Routine care ......................................................................................................................................................... 18

General cleaning safety precautions ................................................................................................ 18

Cleaning the Computer Case ............................................................................................................. 18

Cleaning the keyboard ....................................................................................................................... 18

Cleaning the monitor ......................................................................................................................... 19

Cleaning the mouse ........................................................................................................................... 19

Service considerations ......................................................................................................................................... 19

Power supply fan ............................................................................................................................... 19

Tools and software Requirements .................................................................................................... 19

Screws ............................................................................................................................................... 20

Cables and connectors ...................................................................................................................... 20

Hard Drives ........................................................................................................................................ 20

Lithium coin cell battery .................................................................................................................... 20

SATA hard drives .................................................................................................................................................. 21

SATA hard drive cables ......................................................................................................................................... 21

SATA data cable ................................................................................................................................. 21

SMART ATA drives ................................................................................................................................................ 21

Cable management .............................................................................................................................................. 21

4 Removal and replacement procedures: Microtower ........................................................................................ 23

Preparation for disassembly ............................................................................................................................... 23

Access panel ......................................................................................................................................................... 24

Front bezel ........................................................................................................................................................... 25

Optical drive bezel blank ..................................................................................................................................... 26

Memory ................................................................................................................................................................ 27

DIMMs ................................................................................................................................................ 27

DDR4-SDRAM DIMMs ......................................................................................................................... 27

Populating DIMM sockets (ProDesk 400 and ProDesk 480) ............................................................. 28

Populating DIMM sockets (ProDesk 490) .......................................................................................... 29

Installing DIMMs ................................................................................................................................ 29

Expansion cards ................................................................................................................................................... 31

Drives ................................................................................................................................................................... 34

System board connections (ProDesk 400) ........................................................................................ 37

System board connections (ProDesk 480) ........................................................................................ 38

System board connections (ProDesk 490) ........................................................................................ 39

Drive positions ................................................................................................................................... 40

Removing a 9.5-mm slim optical drive ............................................................................................. 41

Installing a 9.5-mm slim optical drive .............................................................................................. 41

Removing a 3.5-inch hard drive ........................................................................................................ 43

Installing a 3.5-inch hard drive ......................................................................................................... 44

Removing a 2.5-inch hard drive ........................................................................................................ 45

Installing a 2.5-inch hard drive ......................................................................................................... 46

WLAN module ...................................................................................................................................................... 47

RTC battery .......................................................................................................................................................... 48

DisplayPort connector module ............................................................................................................................ 50

Card reader ........................................................................................................................................................... 51

Front I/O assembly ............................................................................................................................................... 52

Power switch assembly ....................................................................................................................................... 54

Fan sink ................................................................................................................................................................ 56

Processor ............................................................................................................................................................. 57

Speaker ................................................................................................................................................................ 58

Fan ........................................................................................................................................................................ 60

Power supply ....................................................................................................................................................... 61

System board ....................................................................................................................................................... 63

HP ProDesk 400 G3 system board callouts ...................................................................................... 63

HP ProDesk 480 G3 system board callouts ...................................................................................... 65

HP ProDesk 490 G3 system board callouts ...................................................................................... 66

5 Computer Setup (F10) Utility ........................................................................................................................ 67

Computer Setup (F10) Utilities ............................................................................................................................ 67

Using Computer Setup (F10) Utilities ................................................................................................ 67

Computer Setup–Main ....................................................................................................................... 69

Computer Setup—Security ............................................................................................................... 71

Computer Setup—Advanced ............................................................................................................. 73

Recovering the Conguration Settings ............................................................................................................... 78

6 Troubleshooting without diagnostics ............................................................................................................ 79

Safety and comfort .............................................................................................................................................. 79

Before you call for technical support .................................................................................................................. 79

Helpful hints ........................................................................................................................................................ 80

Solving general problems .................................................................................................................................... 81

Solving power problems ...................................................................................................................................... 85

Solving hard drive problems ................................................................................................................................ 86

Solving media card reader problems ................................................................................................................... 88

Solving display problems .................................................................................................................................... 89

Solving audio problems ....................................................................................................................................... 94

Solving printer problems ..................................................................................................................................... 96

Solving keyboard and mouse problems .............................................................................................................. 97

Solving Hardware Installation Problems ............................................................................................................. 99

Solving Network Problems ................................................................................................................................ 100

Solving memory problems ................................................................................................................................ 103

Solving CD-ROM and DVD problems .................................................................................................................. 104

Solving USB ash drive problems ..................................................................................................................... 107

Solving front panel component problems ........................................................................................................ 108

Solving Internet access problems ..................................................................................................................... 108

Solving software problems ............................................................................................................................... 110

7 POST error messages and diagnostic front panel LEDs and audible codes ....................................................... 111

POST numeric codes and text messages .......................................................................................................... 111

vii

Interpreting system validation diagnostic front panel LEDs and audible codes .............................................. 116

8 Password security and resetting CMOS ........................................................................................................ 118

Resetting the password jumper ........................................................................................................................ 118

Clearing and resetting the BIOS ........................................................................................................................ 120

9 Using HP PC Hardware Diagnostics (UEFI) ..................................................................................................... 121

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................. 121

10 System backup and recovery ..................................................................................................................... 123

Backing up, restoring, and recovering in Windows 8.1 or Windows 8 .............................................................. 123

Creating recovery media and backups ............................................................................................ 123

Restoring and recovering using Windows tools ............................................................................. 123

Using Reset when the system is not responding ......................................................... 124

Recovery using the Windows recovery USB ash drive ............................................... 124

Recovery using Windows operating system media (purchased separately) ............... 125

Backing up, restoring, and recovering in Windows 7 ........................................................................................ 125

Creating recovery media ................................................................................................................. 126

Creating recovery media using HP Recovery Manager (select models only) ............... 126

Creating recovery discs with HP Recovery Disc Creator (select models only) ............. 127

Creating recovery discs .............................................................................. 127

Backing up your information ........................................................................................ 128

System Restore ............................................................................................................................... 128

System Recovery ............................................................................................................................. 129

System Recovery when Windows is responding .......................................................... 129

System Recovery when Windows is not responding .................................................... 130

System Recovery using recovery media (select models only) ..................................... 130

Using HP Recovery Disc operating system discs (select models only) ........................ 131

Appendix A Power cord set requirements ....................................................................................................... 133

General requirements ........................................................................................................................................ 133

Japanese power cord requirements .................................................................................................................. 133

Country-specic requirements .......................................................................................................................... 134

Appendix B Statement of Volatility ................................................................................................................ 135

Appendix C Specications ............................................................................................................................. 136

Index ........................................................................................................................................................... 138

viii

1 Product features

Features may vary depending on the model. For support assistance and to learn more about the hardware and software installed on your computer model, run the HP Support Assistant utility.

Standard conguration features

Features may vary depending on the model. For support assistance and to learn more about the hardware and software installed on your computer model, run the HP Support Assistant utility.

CAUTION: Several well-known vulnerabilities exist when a computer is in the Sleep state. To prevent an

unauthorized user from accessing data on your computer, even encrypted data, HP recommends that you always initiate Hibernation instead of Sleep anytime the computer will be out of your physical possession. This practice is particularly important when you travel with your computer.

Standard conguration features 1

ProDesk 400

Front panel components

Drive conguration may vary by model. Some models have a bezel blank covering the optical drive bay.

1 Slim Optical Drive (optional) 5 Hard Drive Activity Light

2 Dual-State Power Button 6 USB 3.0 Ports (blue)

3 Microphone Connector 7 Headphone Connector

4 SD Card Reader (optional)

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

computer and it is displaying a diagnostic code. Refer to Interpreting system validation diagnostic front panel LEDs and

audible codes on page 116 to interpret the code.

2 Chapter 1 Product features

Rear panel components

1 Line-In Audio Connector (blue) 7 USB 3.0 Ports (blue)

2 RJ-45 Network Connector 8 USB 2.0 Ports (black)

3 Serial Connector 9 USB 2.0 Ports with Wake from S4/S5

feature (black)

4 PS/2 Mouse Connector (green) 10 DisplayPort Monitor Connector

5 Power Cord Connector 11 VGA Monitor Connector

6 Line-Out Connector for powered audio devices

(green)

NOTE: An optional second serial port and an optional parallel port are available from HP.

If using a USB keyboard, HP recommends connecting the keyboard to one of the USB 2.0 ports with the wake from S4/S5 feature. The wake from S4/S5 feature is also supported on the PS/2 connectors if enabled in BIOS F10 Setup.

When a graphics card is installed in one of the system board slots, the video connectors on the graphics card and the integrated graphics on the system board may be used at the same time. However, for such a conguration, only the display connected to the discrete graphics card will display POST messages.

The system board graphics can be disabled by changing settings in Computer Setup.

12 PS/2 Keyboard Connector (purple)

ProDesk 400 3

ProDesk 480

Front panel components

Drive conguration may vary by model. Some models have a bezel blank covering the optical drive bay.

1 Slim Optical Drive (optional) 5 Hard Drive Activity Light

2 Dual-State Power Button 6 USB 3.0 Ports (blue)

3 Microphone Connector 7 Headphone Connector

4 SD Card Reader (optional)

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

computer and it is displaying a diagnostic code. Refer to Interpreting system validation diagnostic front panel LEDs and

audible codes on page 116 to interpret the code.

4 Chapter 1 Product features

Rear panel components

1 Line-In Audio Connector (blue) 7 Line-Out Connector for powered audio

devices (green)

2 USB 2.0 Ports with Wake from S4/S5 feature

(black)

3 RJ-45 Network Connector 9 USB 3.0 Ports (blue)

4 Serial Connector 10 DVI-D Monitor Connector

5 PS/2 Mouse Connector (green) 11 VGA Monitor Connector

6 Power Cord Connector 12 PS/2 Keyboard Connector (purple)

NOTE: An optional second serial port and an optional parallel port are available from HP.

The system board graphics can be disabled by changing settings in Computer Setup.

8 USB 2.0 Ports (black)

ProDesk 480 5

ProDesk 490

Front panel components

Drive conguration may vary by model. Some models have a bezel blank covering the optical drive bay.

1 Slim Optical Drive (optional) 5 Hard Drive Activity Light

2 Dual-State Power Button 6 USB 3.0 Ports (blue)

3 Microphone Connector 7 Headphone Connector

4 SD Card Reader (optional)

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

computer and it is displaying a diagnostic code. Refer to Interpreting system validation diagnostic front panel LEDs and

audible codes on page 116 to interpret the code.

6 Chapter 1 Product features

Rear panel components

1 Line-In Audio Connector (blue) 7 Line-Out Connector for powered audio

2 USB 3.0 Ports (blue) 8 USB 3.0 Ports (blue)

devices (green)

3 RJ-45 Network Connector 9 USB 2.0 Ports with Wake from S4/S5

feature (black)

4 Serial Connector 10 DisplayPort Monitor Connector

5 PS/2 Mouse Connector (green) 11 VGA Monitor Connector

6 Power Cord Connector 12 PS/2 Keyboard Connector (purple)

NOTE: An optional second DisplayPort, an optional second serial port, and an optional parallel port are available from HP

and may be included with your model.

The system board graphics can be disabled by changing settings in Computer Setup.

ProDesk 490 7

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.

8 Chapter 1 Product features

2 Illustrated parts catalog

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

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions.

Computer major components

Item Description

(1) Front bezel

For use in all countries and regions except for the People’s Republic of China

For use in the People’s Republic of China

(2) Access panel

(3) Memory modules (PC4,17000, CL15)

Computer major components 9

Item Description

16-GB

8-GB

4-GB

(4) Power supply

300W, Active PFC

300W, Energy Star 5.0

300W, standard

180W, Active PFC

180W, Energy Star 5.0

180W, Energy Star 6.0

180W, standard

* System board (includes replacement thermal material)

* Processor (includes replacement thermal material)

Intel Core i7-6700 processor

Intel Core i5-6600 processor

Intel Core i5-6500 processor

Intel Core i3-6320 processor

Intel Core i3-6300 processor

Intel Core i3-6100 processor

Intel Pentium G4520 processor

Intel Pentium G4500 processor

Intel Pentium G4400 processor

Intel Celeron G3920 processor

Intel Celeron G3900 processor

10 Chapter 2 Illustrated parts catalog

Misc parts

Item Description

(1) Speaker

(2) Power switch

(3) Fan sink (includes replacement thermal material)

(4) Chassis fan

(5) Front I/O assembly

(6) SATA cable

(7) DisplayPort connector module

(8) PCIe adapter – WLAN module (includes cable)

* WLAN modules

Misc parts 11

Item Description

Broadcom BCM943228Z 802.11n Bluetooth

Broadcom 802.11n, M.2 Bluetooth, Indonesia

Intel 7265 802.11AC Bluetooth

Intel 3165 802.11AC M.2 Bluetooth

* Rubber feet

* Card reader

USB 3.0

USB 2.0

* Optical drive bezel blank

* WLAN antennas

* HP Business PC Security Lock

* Drive adapter

Hard drive carrier, 2.5-inch to 3.5-inch

Removable frame carrier (installs in optical drive bay; includes adapter for 2.5-inch hard drives)

* Mouse

PS2, optical

USB, optical

USB, laser

Washable

HP USB Hardened Mouse (India only)

HP USB Antimicrobial Mouse (People’s Republic of China)

* Keyboard

HP Conferencing

PS/2 slim

USB slim

USB

HP USB Essential Keyboard

Unbranded

Washable

Smartcard

Wireless keyboard and mouse; includes dongle

Antimicrobial (People’s Republic of China only)

12 Chapter 2 Illustrated parts catalog

Cables

Description

SATA data cable, 10 inch, two straight ends

SATA data cable, 254 mm

DisplayPort cable

Adapters

PCIe to M.2, with full pro bracket

HP DisplayPort to DVI-D adapter

HP DisplayPort to HDMI 4k adapter

DisplayPort to VGA adapter

USB to serial adapter

DVI-I to VGA adapter

DVI cable

PCIe boards

Description

Nvidia GeForce GT730 DP PCIe x8 graphics card, 2 GB

Nvidia GeForce GT720 DP PCIe x8 graphics card, 2 GB

AMD R9 350 2 GB graphics card (DDR5, PCIe x16)

Intel PRO/1000 single port GbE, NIC

PCI adapter – WLAN module

Printer port, PCIe card

Serial port, PCIe card

Cables 13

Drives

Description

Hard drives

2 TB, 7200 rpm, 3.5 inch

1 TB, hybrid SSD, 2.5-inch

1 TB, 7200 rpm, 3.5 inch

500 GB, 7200 rpm, 2.5 inch, self-encrypting (SED)

500 GB, hybrid SSD, 2.5 inch

500 GB, 7200 rpm, 3.5 inch

500 GB, 5400 rpm, FIPS140-2, 2.5 inch

Solid-state drives (SSDs)

512 GB Solid-state Drive (SSD), 2280 PCIe, NVMe

512 GB Solid-state Drive (SSD), 3D NAND

256 GB Solid-state Drive (SSD), self-encrypting (SED)

256 GB Solid-state Drive (SSD)

256 GB Solid-state Drive (SSD), 3D NAND

256 GB Solid-state Drive (SSD), 2280 PCIe, NVMe

180 GB Solid-state Drive (SSD)

180 GB Solid-state Drive (SSD), OPAL 2.0, MLC

128 GB Solid-state Drive (SSD), self-encrypting (SED)

128 GB Solid-state Drive (SSD)

128 GB Solid-state Drive (SSD), 3D NAND

128 GB Solid-state Drive (SSD), 2280 PCIe, NVMe

120 GB Solid-state Drive (SSD)

120 GB Solid-state Drive (SSD), OPAL 2.0 MLC

Optical drive

Blu-ray BD-RW SuperMulti XL Drive

DVD±RW drive

DVD-ROM drive

14 Chapter 2 Illustrated parts catalog

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 nger 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 aected 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.

Generating static

The following table shows that:

●

Dierent activities generate dierent amounts of static electricity.

●

Static electricity increases as humidity decreases.

Relative Humidity

Event 55% 40% 10%

Walking across carpet

Walking across vinyl oor

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

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

NOTE: 700 volts can degrade a product.

Electrostatic discharge information 15

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.

●

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.

Personal grounding methods and equipment

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

●

Wrist straps are exible 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 t 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 oors or dissipative oor mats, use them on both feet with a maximum of one-megohm ± 10% resistance between the operator and ground.

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 o power and input signals before inserting and removing connectors or test equipment.

Static Shielding Protection Levels

1,500

7,500

15,000

●

Use xtures made of static-safe materials when xtures must directly contact dissipative surfaces.

●

Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.

●

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

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

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 oor 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 airow.

●

Never restrict the airow 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 airow.

●

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 airow. 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.

Operating guidelines 17

●

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 ammable 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 18 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 airow.

Cleaning the keyboard

Follow all safety precautions in General cleaning safety precautions on page 18 before cleaning the keyboard.

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

Case on page 18.

When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 18 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.

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

●

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 bers or dirt in conned 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 ammable liquids on the monitor.

●

To clean the monitor body follow the procedures in Cleaning the Computer Case on page 18.

Cleaning the mouse

Before cleaning the mouse, ensure that the power to the computer is turned o.

●

Clean the mouse ball by rst 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.

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To clean the mouse body, follow the procedures in Cleaning the Computer Case on page 18.

Service considerations

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

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 always on when the computer is in the “On” mode. The cooling fan is o when

the computer is in “Standby,” “Suspend,” or “O” modes.

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

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)

●

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

●

Phillips #2 screwdriver

●

Diagnostics software

●

Tamper-resistant T-15 wrench

Service considerations 19

Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of dierent 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 nish. U.S. screws have a silver nish 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 at, exible 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 computer.

●

Avoid dropping drives from any height onto any surface.

●

If you are inserting or removing a hard drive, turn o 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.

●

Do not use excessive force when inserting a drive.

●

Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds such as monitors or speakers.

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 re and chemical burn if the battery is

handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or re, or expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.

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

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 dierential 400-700 mV

Drive voltages 3.3 V, 5 V, 12 V

Jumpers for conguring drive N/A

Data transfer rate 6.0 Gb/s

SATA hard drive cables

SATA data cable

Always use an HP approved SATA 6.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s drives.

Current HP desktop products ship with SATA 6.0 Gb/s hard drives.

SATA data cables are susceptible to damage if overexed. 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 at ribbon cable, never fold to a sharp crease. Sharp creases may damage the wires.

SATA hard drives 21

●

Some at 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.

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

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