HP 205 G1, 205 G2 Maintenance & Service Guide

Maintenance & Service Guide

HP 205 G1 All-in-One Business PC HP 205 G2 All-in-One Business PC HP 18 All-in-One 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.

Fourth Edition (August 2015)

First Edition (November 2013)

Document Part Number: 751755-004

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.

About This Book

WARNING! Text set o in this manner indicates that failure to follow directions could result in bodily harm or

loss of life.

CAUTION: Text set o in this manner indicates that failure to follow directions could result in damage to

equipment or loss of information.

NOTE: Text set o in this manner provides important supplemental information.

iii

iv About This Book

Table of contents

1 Product Features ........................................................................................................................................... 1

Overview ................................................................................................................................................................ 1

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

Top components .................................................................................................................................................... 2

Right components .................................................................................................................................................. 3

Left components .................................................................................................................................................... 4

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

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

Activating and customizing the software in Windows 10 ..................................................................................... 6

Activating the Windows Operating System ......................................................................................... 6

Downloading Windows updates .......................................................................................................... 6

Customizing the monitor display ........................................................................................................ 6

Activating and customizing the software in Windows 8.1 .................................................................................... 7

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

Downloading Windows 8.1 updates .................................................................................................... 7

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

3 Illustrated parts catalog ................................................................................................................................ 8

Boards and memory .............................................................................................................................................. 8

Mass storage devices ............................................................................................................................................. 9

Miscellaneous parts ............................................................................................................................................. 10

Cables ................................................................................................................................................................... 11

4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation ............................................. 12

SATA hard drives .................................................................................................................................................. 12

SATA hard drive cables ......................................................................................................................................... 12

SATA data cable ................................................................................................................................. 12

SMART ATA drives ................................................................................................................................................ 13

Electrostatic discharge information .................................................................................................................... 13

Generating static ............................................................................................................................... 13

Preventing electrostatic damage to equipment ............................................................................... 13

Personal grounding methods and equipment .................................................................................. 14

Grounding the work area ................................................................................................................... 14

Recommended materials and equipment ........................................................................................ 14

Operating guidelines ........................................................................................................................................... 15

Routine care ......................................................................................................................................................... 15

General cleaning safety precautions ................................................................................................ 15

Cleaning the computer case .............................................................................................................. 16

Cleaning the keyboard ....................................................................................................................... 16

Cleaning the display .......................................................................................................................... 16

Cleaning the mouse ........................................................................................................................... 17

Service considerations ......................................................................................................................................... 17

Tools and software requirements ..................................................................................................... 17

Screws ............................................................................................................................................... 17

Cables and connectors ...................................................................................................................... 18

Hard drives ........................................................................................................................................ 18

Lithium coin cell battery .................................................................................................................... 18

5 Removal and Replacement Procedures All-in One (AIO) Chassis ....................................................................... 19

Preparing to disassemble the computer ............................................................................................................. 19

Rear cover ............................................................................................................................................................ 20

Stand assembly ................................................................................................................................................... 21

Webcam module .................................................................................................................................................. 22

Replacing drives ................................................................................................................................................... 23

Replacing the hard disc drive with a 3.5-inch drive or a 2.5-inch drive ........................................... 23

Replacing the optical disc drive ........................................................................................................ 26

Front bezel ........................................................................................................................................................... 28

Converter board ................................................................................................................................................... 30

Power button board ............................................................................................................................................. 32

Speakers .............................................................................................................................................................. 34

Fan ........................................................................................................................................................................ 35

Hard drive and optical drive cables and connectors ........................................................................................... 37

System board cover ............................................................................................................................................. 39

Memory ................................................................................................................................................................ 41

WLAN module ...................................................................................................................................................... 43

RTC battery .......................................................................................................................................................... 44

System board ....................................................................................................................................................... 46

Display panel ....................................................................................................................................................... 48

6 Computer Setup (F10) Utility ........................................................................................................................ 50

Computer Setup (F10) Utilities ............................................................................................................................ 50

Using Computer Setup (F10) Utilities ................................................................................................ 51

Computer Setup—File ....................................................................................................................... 52

Computer Setup—Storage ................................................................................................................ 53

Computer Setup—Security ............................................................................................................... 54

Computer Setup—Power .................................................................................................................. 58

Computer Setup—Advanced ............................................................................................................. 59

Recovering the Conguration Settings ............................................................................................................... 61

7 Troubleshooting without diagnostics ............................................................................................................ 62

Safety and comfort .............................................................................................................................................. 62

Before you call for technical support .................................................................................................................. 62

Helpful hints ........................................................................................................................................................ 63

Solving general problems .................................................................................................................................... 64

Solving power problems ...................................................................................................................................... 68

Solving hard drive problems ................................................................................................................................ 69

Solving media card reader problems ................................................................................................................... 71

Solving display problems .................................................................................................................................... 72

Solving audio problems ....................................................................................................................................... 77

Solving printer problems ..................................................................................................................................... 79

Solving keyboard and mouse problems .............................................................................................................. 80

Solving Hardware Installation Problems ............................................................................................................. 82

Solving Network Problems .................................................................................................................................. 83

Solving memory problems .................................................................................................................................. 86

Solving CD-ROM and DVD problems .................................................................................................................... 88

Solving USB ash drive problems ........................................................................................................................ 90

Solving front panel component problems .......................................................................................................... 91

Solving Internet access problems ....................................................................................................................... 91

Solving software problems .................................................................................................................................. 93

8 HP PC Hardware Diagnostics ......................................................................................................................... 94

Why run HP PC Hardware Diagnostics ................................................................................................................. 94

How to access and run HP PC Hardware Diagnostics .......................................................................................... 94

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 95

9 Backup and Recovery ................................................................................................................................... 96

Backing up, restoring, and recovering in Windows 10 ........................................................................................ 96

Creating recovery media and backups .............................................................................................. 96

Creating HP Recovery media (select products only) ...................................................... 96

Using Windows tools ......................................................................................................................... 97

Restore and recovery ........................................................................................................................ 97

Recovering using HP Recovery Manager ........................................................................ 98

What you need to know before you get started .......................................... 98

Using the HP Recovery partition (select products only) .............................. 99

Using HP Recovery media to recover ........................................................... 99

Changing the computer boot order .............................................................. 99

vii

Removing the HP Recovery partition (select products only) ....................... 99

Backup and recovery in Windows 8.1 ................................................................................................................ 100

Backing up your information .......................................................................................................... 100

Performing a system recovery ........................................................................................................ 101

Using the Windows recovery tools ............................................................................... 101

Using f11 recovery tools ............................................................................................... 102

Using Windows 8.1 operating system media (purchased separately) ......................... 102

10 POST Error Messages ................................................................................................................................ 103

POST Numeric Codes and Text Messages .......................................................................................................... 103

Interpreting POST diagnostic front panel LEDs ................................................................................................ 109

11 Password Security and Resetting CMOS ..................................................................................................... 111

Establishing a Setup or Power-on password .................................................................................................... 111

Resetting the Setup and Power-on password .................................................................................................. 112

Clearing and resetting the CMOS ....................................................................................................................... 112

Appendix A Power Cord Set Requirements ...................................................................................................... 115

General requirements ........................................................................................................................................ 115

Japanese Power Cord Requirements ................................................................................................................. 115

Country-specic requirements .......................................................................................................................... 116

Appendix B Specications ............................................................................................................................. 117

Specications ..................................................................................................................................................... 117

Index ........................................................................................................................................................... 118

viii

1 Product Features

Overview

The HP All-in-One Business PC oers the following features:

●

Integrated All-in-One form factor

●

18.5-inch diagonal widescreen HD LED-backlight anti-glare LCD Display

●

Adjustable tilt stand

●

HP 205 G1 models: AMD E1-2500 processor featuring AMD Radeon HD 8240 Integrated Graphics

●

HP 205 G2 models: AMD E1-6010 processor featuring AMD Radeon R2 Integrated Graphics

●

HP 18 models: Intel Pentium J2900 or Intel Celeron J1800 processor

●

Integrated Realtek RTL8166EH-CG 10/100 Ethernet Controller

●

Wireless connectivity - HP WLAN/Bluetooth Combo NIC 802.11b/g/n Mini Card

●

HP 205 G1 and HP 18 models: Integrated 1.0 MP 720p low-light webcam with microphone array

●

HP 205 G2 models: Integrated VGA (640 x 480) webcam with mono microphone

●

Integrated HD audio card and stereo speakers

●

Up to 16 GB of DDR3 SDRAM supported

●

Up to 2-TB hard drive

●

Optional HP Slim-Tray SuperMulti DVD+RW SATA 8X Optical Drive

●

7-in-1 Media Card Reader

●

USB Keyboard and Mouse

●

ENERGY STAR® (for Windows operating system only)

●

EPEAT® Silver certication

Where HP registers commercial desktop products. See http://www.epeat.net for registration status in your country

Overview 1

Front components

Component Component

1 Internal microphones (2) 3 Webcam

2 Webcam light 4 Speaker

Top components

Component

5 Power button

2 Chapter 1 Product Features

Right components

Component

6 Optical drive

Right components 3

Left components

Component Component

7 Drive light 10 Audio-in (microphone) jack

8 Memory card reader 11 Audio-out (headphone) jack

9 USB 3.0 ports (2)

4 Chapter 1 Product Features

Rear components

Component Component

12 Power connector 14 USB ports (4)

13 RJ-45 (network) jack 15 Audio line-out jack

Rear components 5

2 Activating and Customizing the Software

Activating and customizing the software in Windows 10

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 airow.

Activating the Windows Operating System

The rst 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 set up so you can receive important software updates, facilitate support questions, and sign up for special oers. 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 o the computer during the activation process may damage the software that runs the computer or prevent its proper installation.

Downloading Windows 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.

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

1. From the taskbar, type Windows Update, and then from the Search window, select Check for

updates

2. Click Update & recovery, and then click Check for updates.

3. Run Windows Update monthly thereafter.

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 or Screen resolution to change display settings.

– or –

Click the Start icon, click Settings, and the click Personalization.

6 Chapter 2 Activating and Customizing the Software

Activating and customizing the software in Windows 8.1

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 to permit the required airow.

Activating the Windows Operating System

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

COMPLETE. Turning o the computer during the activation process may damage the software that runs the computer or prevent its proper installation.

Downloading Windows 8.1 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 display

You can customize display settings for Windows 8.1 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.

Activating and customizing the software in Windows 8.1 7

3 Illustrated parts catalog

Boards and memory

Item Component Spare part number

(1) System board (includes processor and replacement thermal material):

For use in HP 205 G1 models:

For use in HP 205 G2 models:

For use in HP 18 models:

●

AMD E1-2500 APU for use in models with Windows 7 or without the Windows operating system

●

AMD E1-2500 APU for use in models with Windows 8.1 Standard 751275-501

●

AMD E1-2500 APU for use in models with Windows 8.1 Professional or Windows 10 751275-601

●

AMD E1-6010 APU for use in models with Windows 7 or without the Windows operating system

●

AMD E1-6010 APU for use in models with Windows 8.1 Standard 806244-501

●

AMD E1-6010 APU for use in models with Windows 8.1 Professional or Windows 10 806244-601

●

Intel Pentium J2900 processor for use in models with Windows 7 or without the Windows operating system

●

Intel Pentium J2900 processor for use in models with Windows 8.1 Standard 782107-501

●

Intel Pentium J2900 processor for use in models with Windows 8.1 Professional or Windows 10

●

Intel Celeron J1800 processor for use in models with Windows 7 or without the Windows operating system

751275-001

806244-001

782107-001

782107-601

782108-001

●

Intel Celeron J1800 processor for use in models with Windows 8.1 Standard 782108-501

8 Chapter 3 Illustrated parts catalog

Item Component Spare part number

(2) Converter board 751276-001

(3) Power button board 752342-001

WLAN module

For use in HP 205 G1 and HP 18 models:

For use in HP 205 G2 models:

Wireless antenna kit 806248-001

Webcam

HD, for use in HP 205 G1 and HP 18 models 752344-001

VGA, for use in HP 205 G2 and HP 18 models 806245-001

Memory module (PC3L-12800, 1666-MHz, DDR3):

4-GB 689373-001

2-GB 689372-001

●

Intel Celeron J1800 processor for use in models with Windows 8.1 Professional or Windows 10

●

Ralink RT5390R 802.11bgn Wi-Fi Adapter 701399-001

●

HP Broadcom BCM943142HM 802.11 b/g/n WLAN + BT4.0 Mini Wireless Card 753076-001

●

Ralink RT5390R 802.11bgn Wi-Fi Adapter for use only in Brazil 806249-201

782108-601

Mass storage devices

Item Spare part number

Hard drives

2-TB, 7200 rpm 616608-001

750-MB, 7200 rpm 639363-001

500-MB, 7200 rpm 751283-001

Optical drive

DVD±RW drive 657958-001

Optical drive bezel 806247-001

Mass storage devices 9

Miscellaneous parts

Item Component Spare part number

(1) Speakers 752343-001

(2) Hard drive screw bumpers 752334-001

(3) Fan 752335-001

(4) Front bezel 752331-001

Rear cover 752332-001

Display panel, 18.5-inch, anti-glare , LED N-ZBD, 200 nits 752345-001

Stand 752333-001

AC adapter (65 W)

Standard eciency 752346-001

89% ecient 806246-001

Mouse, USB

Mouse, USB 719901-001

Mouse, USB, optical 674316-001

Keyboards, unbranded

Brazilian Portuguese 709695-161

Chinese 729339-AA1

French Canadian 709695-121

International English 709695-L31

Latin American Spanish 537924-161

United States 729339-001

10 Chapter 3 Illustrated parts catalog

Cables

Component Spare part number

Backlight cable 752330-001

Power button board cable 752336-001

Webcam cable 752337-001

Hard drive cable assembly 752338-001

Optical drive cable assembly 752339-001

LVDS (display) cable 752340-001

Converter board cable 752341-001

Cables 11

4 Serial ATA (SATA) drive guidelines and

routine care 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.

NOTE: HP only supports the use of SATA hard drives on these models of computer. No Parallel ATA (PATA)

drives are supported.

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 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 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.

12 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation

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.

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.

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.

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

●

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.

SMART ATA drives 13

●

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.

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

●

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.

Recommended materials and equipment

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

1,500

7,500

15,000

●

Antistatic tape

●

Antistatic smocks, aprons, or sleeve protectors

●

Conductive bins and other assembly or soldering aids

14 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation

●

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 to permit the required 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 removed.

●

Do not place computers so near each other that they are subject to each other’s re-circulated or preheated air.

●

Keep liquids away from the computer and keyboard.

●

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.

Operating guidelines 15

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 15 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 15 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 16.

When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 15 before following these procedures:

CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the

keys.

●

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

●

Canned, pressurized air may be used to clean debris from under the keys. Caution should be used as too much air pressure can dislodge lubricants applied under the wide keys.

●

If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool is available through many electronic supply outlets.

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 display

●

Wipe the display screen with a clean cloth moistened with water or with a towelette designed for cleaning displays. 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.

16 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation

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.

●

To clean the mouse body, follow the procedures in Cleaning the computer case on page 16.

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 (HP screwdriver with bits, PN 161946-001)

●

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

●

Phillips #2 screwdriver

●

Diagnostics software

●

HP tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or HP tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002)

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

to prevent damage.

Service considerations 17

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 CPU.

●

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. For more information about preventing electrostatic damage, refer to

Electrostatic discharge information on page 13

●

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 displays 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.

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.

18 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation

5 Removal and Replacement Procedures All-

in One (AIO) Chassis

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

Preparing to disassemble the computer

To avoid injury and equipment damage, always complete the following steps in order, when opening the HP Pro All-in-One.

1. Remove all media from the computer.

2. Shut down the computer.

3. After the system has completely shut down, disconnect the power adapter from the back of the

computer.

4. Disconnect all other attached cables from the back of the computer.

5. Place the computer face down on a soft at surface. HP recommends that you set down a blanket, towel,

or other soft cloth to protect the screen surface from scratches or other damage.

WARNING! Beware of sharp edges inside the chassis.

Preparing to disassemble the computer 19

Rear cover

Description Spare part number

Rear cover 752332-001

The computer has one main rear cover that allows access to internal components.

To remove the rear cover:

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 19).

2. On the bottom of the computer, turn the two captive screws (1) to the left until they click and release

the rear cover.

3. Lift up on the bottom of the rear cover to disengage it (2), and then lift the rear cover o the computer

(3).

To replace the rear cover, reverse the removal procedures.

20 Chapter 5 Removal and Replacement Procedures All-in One (AIO) Chassis

Stand assembly

Description Spare part number

Stand assembly 752333-001

The stand is secured with four Torx screws. You must remove the rear cover to remove the stand.

To remove the stand:

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 19).

2. Remove the rear cover (see Rear cover on page 20).

3. On the side of the rear cover, in the order stamped into the stand, remove the four Torx screws that

secure the stand to the rear cover (1).

4. Remove the stand from the rear cover (2).

To replace the stand, reverse the removal procedures.

Stand assembly 21

Webcam module

Description Spare part number

Webcam module, HD, for use in HP 205 G1 and HP 18 models 752344-001

Webcam module, VGA, for use in HP 205 G2 models 806245-001

On products that ship with a webcam module, the module is located at the top of the computer beneath the top panel. It is secured with two silver Phillips screws and has one connector.

The webcam module is optional.

To remove the webcam module:

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 19).

2. Remove the rear cover (see Rear cover on page 20).

3. Press the tabs on each side of the webcam module and lift it up away from the tabs.

22 Chapter 5 Removal and Replacement Procedures All-in One (AIO) Chassis

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