Hp 460 G2, 480 G2, 400 G2 User Manual

Maintenance & Service Guide

HP ProOne 400 G2 20 inch All-in-One HP ProOne 460 G2 20 inch All-in-One HP ProOne 480 G2 20 inch All-in-One

© Copyright 2015 HP Development Company,

L.P.

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: 822855-001

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.

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
Side components ...................................................................................................................................................	3
Rear components ...................................................................................................................................................	4
Internal components .............................................................................................................................................	5
Labels .....................................................................................................................................................................	6
2 Illustrated parts catalog ................................................................................................................................	7
System parts ..........................................................................................................................................................	7
Misc parts ...............................................................................................................................................................	8
Mass storage devices ...........................................................................................................................................	10
Processors and memory modules .......................................................................................................................	11
Cables ...................................................................................................................................................................	12
Keyboards and mice .............................................................................................................................................	13
3 Routine care, SATA drive guidelines, and disassembly preparation ..................................................................	14
Electrostatic discharge information ....................................................................................................................	14
Generating static ...............................................................................................................................	15
Preventing electrostatic damage to equipment ...............................................................................	15
Personal grounding methods and equipment ..................................................................................	16
Grounding the work area ...................................................................................................................	16
Recommended materials and equipment ........................................................................................	16
Operating guidelines ...........................................................................................................................................	17
Routine care .........................................................................................................................................................	17
General cleaning safety precautions ................................................................................................	17
Cleaning the Computer Case .............................................................................................................	18
Cleaning the keyboard .......................................................................................................................	18
Cleaning the monitor .........................................................................................................................	18
Cleaning the mouse ...........................................................................................................................	19
Service considerations .........................................................................................................................................	19
Tools and software Requirements ....................................................................................................	19
Screws ...............................................................................................................................................	19
Cables and connectors ......................................................................................................................	19
Hard Drives ........................................................................................................................................	19
Lithium coin cell battery ....................................................................................................................	20

v

SATA hard drive cables .........................................................................................................................................	21
SATA data cable .................................................................................................................................	21
Cable management ..............................................................................................................................................	21
4 Removal and Replacement Procedures ..........................................................................................................	22
Preparing to disassemble the computer .............................................................................................................	22
Rear port cover ....................................................................................................................................................	23
Attaching and removing a stand .........................................................................................................................	24
Recline stand .....................................................................................................................................	24
Attaching a recline stand ................................................................................................	24
Removing a recline stand ...............................................................................................	24
Adjustable-height stand ...................................................................................................................	25
Attaching an adjustable-height stand ............................................................................	25
Removing an adjustable-height stand ...........................................................................	26
Easel stand ........................................................................................................................................	26
Attaching an easel stand ................................................................................................	26
Removing an easel stand ................................................................................................	27
Access panel .........................................................................................................................................................	28
Drives ...................................................................................................................................................................	29
Replacing a hard disc drive ................................................................................................................	29
Removing a 2.5-inch hard disc drive ..............................................................................	30
Installing a 2.5-inch hard disc drive ................................................................................	31
Replacing the optical drive ................................................................................................................	31
Converter board ...................................................................................................................................................	33
Top trim ................................................................................................................................................................	34
Webcam module ..................................................................................................................................................	35
System board (EMI) shield ...................................................................................................................................	37
Memory ................................................................................................................................................................	38
Battery .................................................................................................................................................................	41
WLAN module ......................................................................................................................................................	43
Antennas ..............................................................................................................................................................	45
Heat sink ..............................................................................................................................................................	46
Processor .............................................................................................................................................................	47
System board .......................................................................................................................................................	49
System board callouts .........................................................................................................................................	51
System board callouts .......................................................................................................................	51
Serial/PS2 board ..................................................................................................................................................	52
Speakers ..............................................................................................................................................................	54
VESA mounting bracket .......................................................................................................................................	55
Drive cable ...........................................................................................................................................................	56
Power connector ..................................................................................................................................................	57

vi

Fan assembly .......................................................................................................................................................	59
Right trim .............................................................................................................................................................	60
Left trim ...............................................................................................................................................................	62
Rear I/O cover and bottom trim ...........................................................................................................................	64
Display panel, non-touch .....................................................................................................................................	65
Display panel, touch ............................................................................................................................................	68
5 Computer Setup (F10) Utility ........................................................................................................................	71
Computer Setup (F10) Utilities ............................................................................................................................	71
Using Computer Setup (F10) Utilities ................................................................................................	71
Computer Setup–Main .......................................................................................................................	73
Computer Setup—Security ...............................................................................................................	75
Computer Setup—Advanced .............................................................................................................	77
Recovering the Con guration Settings ...............................................................................................................	82
6 Using HP PC Hardware Diagnostics (UEFI) .......................................................................................................	83
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device ....................................................................	83
7 Troubleshooting without diagnostics ............................................................................................................	85
Safety and comfort ..............................................................................................................................................	85
Before you call for technical support ..................................................................................................................	85
Helpful hints ........................................................................................................................................................	86
Solving general problems ....................................................................................................................................	87
Solving power problems ......................................................................................................................................	91
Solving hard drive problems ................................................................................................................................	92
Solving media card reader problems ...................................................................................................................	94
Solving display problems ....................................................................................................................................	95
Solving audio problems .....................................................................................................................................	100
Solving printer problems ...................................................................................................................................	102
Solving keyboard and mouse problems ............................................................................................................	103
Solving Hardware Installation Problems ...........................................................................................................	105
Solving Network Problems ................................................................................................................................	106
Solving memory problems ................................................................................................................................	109
Solving CD-ROM and DVD problems ..................................................................................................................	110
Solving USB flash drive problems .....................................................................................................................	113
Solving front panel component problems ........................................................................................................	114
Solving Internet access problems .....................................................................................................................	114
Solving software problems ...............................................................................................................................	116

vii

8 System backup and recovery ......................................................................................................................	117
Backing up, restoring, and recovering in Windows 10 ......................................................................................	117
Creating recovery media and backups ............................................................................................	117
Creating HP Recovery media (select products only) ....................................................	117
Using Windows tools .......................................................................................................................	119
Restore and recovery ......................................................................................................................	119
Recovering using HP Recovery Manager ......................................................................	119
What you need to know before you get started ........................................	119
Using the HP Recovery partition (select products only) ............................	120
Using HP Recovery media to recover .........................................................	120
Changing the computer boot order ............................................................	121
Removing the HP Recovery partition (select products only) .....................	121
Backing up, restoring, and recovering in Windows 8.1 or Windows 8 ..............................................................	121
Creating recovery media and backups ............................................................................................	121
Restoring and recovering using Windows tools .............................................................................	122
Using Reset when the system is not responding .........................................................	122
Recovery using the Windows recovery USB flash drive ...............................................	123
Recovery using Windows operating system media (purchased separately) ...............	123
Backing up, restoring, and recovering in Windows 7 ........................................................................................	123
Creating recovery media .................................................................................................................	124
Creating recovery media using HP Recovery Manager (select models only) ...............	124
Creating recovery discs with HP Recovery Disc Creator (select models only) .............	125
Creating recovery discs ..............................................................................	126
Backing up your information ........................................................................................	126
System Restore ...............................................................................................................................	127
System Recovery .............................................................................................................................	127
System Recovery when Windows is responding ..........................................................	127
System Recovery when Windows is not responding ....................................................	128
System Recovery using recovery media (select models only) .....................................	128
Using HP Recovery Disc operating system discs (select models only) ........................	129
9 POST error messages and diagnostic front panel LEDs and audible codes .......................................................	131
POST numeric codes and text messages ..........................................................................................................	131
Interpreting system validation diagnostic front panel LEDs and audible codes ..............................................	136
10 Password security and resetting CMOS ......................................................................................................	138
Resetting the password jumper ........................................................................................................................	138
Clearing and resetting the BIOS ........................................................................................................................	140

viii

Appendix A Power cord set requirements .......................................................................................................	141
General requirements ........................................................................................................................................	141
Japanese power cord requirements ..................................................................................................................	141
Country-speci c requirements ..........................................................................................................................	142
Appendix B Statement of Volatility ................................................................................................................	143
Appendix C peci c tions .............................................................................................................................	144
Index ...........................................................................................................................................................	145

ix

x

1Product features

Overview

NOTE: For the latest speci cations or additional speci cations on this product, go to http://www.hp.com/go/ quickspecs/ and search for your speci c display model to nd the model-speci c QuickSpecs.

Overview 1

Front components

Component		Component
1	Dual microphone array (optional)	4	Webcam (optional)
2	Webcam activity LED (with optional webcam)	5	16:9 widescreen LED-backlit LCD display
3	Webcam privacy shutter slide switch	6	High-performance stereo speakers

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.

2Chapter 1 Product features

Side components

Component		Component
1	Power button	6	Microphone/line in jack
2	hard disk drive activity LED	7	HP SD media card reader (optional)
3	USB 3.0 port, fast-charging	8	Optical disc drive eject button
4	USB 3.0 port	9	Optical disc drive activity LED
5	Headset/line out jack	10	Tray-load optical disc drive

Side components

3

Rear components

Component		Component
1	Power cable retention loop	7	DisplayPort connector
2	Port cover security screw hole	8	(2) USB 3.0 ports
3	Serial port (optional)	9	(2) USB 2.0 ports with wake-up functionality
4	PS/2 keyboard connector (optional)	10	RJ-45 Gigabit Ethernet port
5	PS/2 mouse connector (optional)	11	Stereo audio line out
6	Power connector

4Chapter 1 Product features

Internal components

Component		Component
1	Optical disc drive	3	Memory
2	hard disk drive	4	RTC Battery

Internal components

5

Labels

The labels affixed to the computer provide information you may need when you troubleshoot system problems or travel internationally with the computer.

IMPORTANT: All labels described in this section will be located under the stand or affixed to the bottom of the computer.

1.Microsoft® Certi cate of Authenticity label (select models only prior to Windows 8)—Contains the Windows Product Key. You may need the Product Key to update or troubleshoot the operating system. HP platforms preinstalled with Windows 8 or later do not have the physical label, but have a Digital Product Key electronically installed.

NOTE: This Digital Product Key is automatically recognized and activated by Microsoft Operating Systems on a reinstall of the Windows 8 or Windows 8.1 operating system with HP-approved recovery methods.

2.Service label—Provides important information to identify your computer. When contacting support, you will probably be asked for the serial number, and possibly for the product number or the model number. Locate these numbers before you contact support.

Component

(1)Serial number

(2)Product number

(3)Warranty period

3.Serial number label

6Chapter 1 Product features

2Illustrated parts catalog

Component appearance may vary.

System parts

Item Description

(1)Front bezel (for use in non-touch models)

(2)Rear cover (main)

(3)Rear port cover

(4)Rubber feet (right and left) Panel/trim kit, includes

(5)Top trim

(6)Left side trim

(7)Right side trim

(8)Rear I/O cover and bottom trim

*Optical drive bezel blank (for use in models without an optical drive)

System parts

7

Item Description

*Stands

Adjustment Height Stand Easel Stand

Recline Stand

*VESA cover (for use in models with out a stand)

Misc parts

8Chapter 2 Illustrated parts catalog

Item Description

(1)System board

(2)Converter board

(3)Serial port and PS/2 connector board

(4)Optical drive (includes latch) DVD±RW drive

DVD-ROM drive

(5)Webcam module

For use in touch models

For use in non-touch models

(6)Fan

(7)Heat sink (thermal module) (includes replacement thermal material)

Display panel

(8)Non-touch Touch

(9)Speakers (left and right)

*Power supply

120W

90W

*WLAN modules

Intel Dual Band Wireless-AC 7265 NV

HP WLAN 802.11 a/b/g/n + Bluetooth 4.0

*Mylar cover (for use in models without speakers)

*Card reader cover

*Hard drive isolation grommets

*Webcam shutter blank (for use in models without a webcam)

*HP Executive Capacitive Stylus

*HP ultraslim keyed cable lock

Misc parts

9

Mass storage devices

Description

Optical drive (does not include bezel)

DVD±RW drive

DVD-ROM drive

Hard drive

2 TB, 5400 rpm

1 TB, hybrid SSD drive

1 TB, 7200 rpm

500 GB, hybrid SSD drive

500 GB, 7200 rpm hard drive, self-encrypting (SED)

500 GB, 7200 rpm hard drive

500 GB, 5400 rpm hard drive, FIPS

Solid-state drive (not illustrated)

512-GB solid-state drive, TLC

256-GB solid-state drive, OPAL 2.0, self-encrypting (SED)

256-GB solid-state drive

256-GB solid-state drive, 3D, NAND

180-GB solid-state drive

180-GB solid-state drive, OPAL 2.0, MLC

128-GB solid-state drive, OPAL 2.0, self-encrypting (SED)

128-GB solid-state drive

128-GB solid-state drive, 3D, NAND (EliteOne 800 and ProOne 600 models)

120-GB solid-state drive

120-GB solid-state drive, OPAL 2.0, MLC

10 Chapter 2 Illustrated parts catalog

Processors and memory modules

Description

Memory modules (SODIMM; PC4-17000)

16-GB

8-GB

4-GB

Intel Processors (include replacement thermal material)

Intel Core i7-6700 (3.4-GHz)

Intel Core i7-6700T (2.8-GHz)

Intel Core i5-6600 (3.3-GHz)

Intel Core i5-6600T (2.7-GHz)

Intel Core i5-6500 (3.2-GHz)

Intel Core i5-6500T (2.5-GHz)

Intel Core i3-6320 (3.9-GHz)

Intel Core i3-6300 (3.8-GHz)

Intel Core i3-6300T (3.3-GHz)

Intel Core i3-6100 (3.7-GHz)

Intel Core i3-6100T (3.2-GHz)

Intel Pentium G4520 (3.6-GHz)

Intel Pentium G4500 (3.5-GHz)

Intel Pentium G4500T (3.0-GHz)

Intel Pentium G4400 (3.3-GHz)

Intel Pentium G4400T (2.9-GHz)

Intel Celeron G3920 (2.9-GHz)

Intel Celeron G3900 (2.8-GHz)

Intel Celeron G3900T (2.6-GHz)

Processors and memory modules 11

Cables

Item Description

(1)Backlight cable

(2)Serial port cable

(3)Hard drive + optical drive SATA data cable

(4)Power connector cable

*Touch control cable

*Antenna cable

*Converter board cable

*LVDS (display) cable

*Webcam cable

*DisplayPort cable

*Adapter, DisplayPort to VGA

*Adapter, DisplayPort to DVI

*Adapter, DisplayPort to HDMI 1.4

12 Chapter 2 Illustrated parts catalog

Keyboards and mice

Description

Keyboard

USB

USB, slim

Washable

Smartcard

Conferencing

Wireless with mouse

PS/2

PS/2, slim

Mouse

Wireless

Washable

Hardened

USB, optical

PS/2, optical

USB, laser

Keyboards and mice 13

3Routine 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.

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

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	7,500 V	15,000 V	35,000 V
Walking across vinyl floor	3,000 V	5,000 V	12,000 V
Motions of bench worker	400 V	800 V	6,000 V
Removing DIPs from plastic tube	400 V	700 V	2,000 V
Removing DIPs from vinyl tray	2,000 V	4,000 V	11,500 V
Removing DIPs from Styrofoam	3,500 V	5,000 V	14,500 V
Removing bubble pack from PCB	7,000 V	20,000 V	26,500 V
Packing PCBs in foam-lined box	5,000 V	11,000 V	21,000 V

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.

●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.

Electrostatic discharge information 15

Personal grounding methods and equipment

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

●Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords. To provide proper ground, a strap must be worn snug against bare skin. The ground cord must be

connected and 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 floors or dissipative floor mats, use them on both feet with a maximum of one-megohm ± 10% resistance between the operator and ground.

	Static Shielding Protection Levels
Method	Voltage
Antistatic plastic	1,500
Carbon-loaded plastic	7,500
Metallized laminate	15,000

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:

●Antistatic tape

●Antistatic smocks, aprons, or sleeve protectors

●Conductive bins and other assembly or soldering aids

●Conductive foam

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

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

●Field service kits

●Static awareness labels

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

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

●Material handling packages

●Conductive plastic bags

●Conductive plastic tubes

●Conductive tote boxes

●Opaque shielding bags

●Transparent metallized shielding bags

●Transparent shielding tubes

Operating guidelines

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

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

●Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides of the computer and above the monitor to permit the required airflow.

●Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow.

●Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign matter can block the vents and limit the airflow. Be sure to unplug the computer before cleaning the air vents.

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

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

●If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be provided on the enclosure, and the same operating guidelines listed above will still apply.

●Keep liquids away from the computer and keyboard.

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

●Install or enable power management functions of the operating system or other software, including sleep states.

Routine care

General cleaning safety precautions

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

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

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

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

5.Disconnect the keyboard before cleaning it.

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

Operating guidelines 17

Cleaning the Computer Case

Follow all safety precautions in General cleaning safety precautions on page 17 before cleaning the computer.

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

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

●For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a cloth or swab dampened with clear water.

●For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will evaporate quickly and not leave a residue.

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

●Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents and limit the airflow.

Cleaning the keyboard

Follow all safety precautions in General cleaning safety precautions on page 17 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 17 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 monitor

●Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into the housing and damage a component. Never use solvents or flammable liquids on the monitor.

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

18 Chapter 3 Routine care, SATA drive guidelines, 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 18.

Service considerations

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

Tools and software Requirements

To service the computer, you need the following:

●Torx T-15 screwdriver

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

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

●Phillips #2 screwdriver

●Diagnostics software

●Tamper-resistant T-15 wrench

Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of 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 flat, flexible cables. These cables must be handled with care to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced.

CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the reassembly process. Improper cable placement can damage the computer.

Hard Drives

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

Service considerations

19

●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 14

●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.

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.

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