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 Conguration 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 ash 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 ash 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-specic requirements .......................................................................................................................... 142
Appendix B Statement of Volatility ................................................................................................................ 143
Appendix C Specications ............................................................................................................................. 144
Index ........................................................................................................................................................... 145
ix
x
1 Product features
Overview
NOTE: For the latest specications or additional specications on this product, go to
http://www.hp.com/go/ quickspecs/ and search for your specic display model to nd the model-specic
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.
2 Chapter 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
4 Chapter 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 axed 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 axed to the bottom of
the computer.
1. Microsoft® Certicate 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
6 Chapter 1 Product features
2 Illustrated 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
8 Chapter 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
3 Routine care, SATA drive guidelines, and
disassembly preparation
This chapter provides general service information for the computer. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. You must disconnect the power cord from the power source before opening the computer to prevent
system board or component damage.
Electrostatic discharge information
A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device
exposed to electrostatic discharge (ESD) may not appear to be aected 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:
●
Dierent activities generate dierent 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.
●
To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
7,500 V
3,000 V
400 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
●
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 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
●
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
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 airow.
●
Never restrict the airow 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 airow.
●
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 airow. 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 ammable solutions to clean the computer.
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use
the cloth on the component.
3. Always unplug the computer when cleaning with liquids or damp cloths.
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5. Disconnect the keyboard before cleaning it.
6. Wear safety glasses equipped with side shields when cleaning the keyboard.
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 airow.
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 conned areas. Allow the parts to air dry before reassembly.
Cleaning the monitor
●
Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for
cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into the
housing and damage a component. Never use solvents or ammable liquids on the monitor.
●
To clean the monitor body follow the procedures in Cleaning the Computer Case on page 18.
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 dierent lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP
strongly recommends that all screws removed during disassembly be kept with the part that was removed,
then returned to their proper locations.
CAUTION: Metric screws have a black nish. U.S. screws have a silver nish and are used on hard drives only.
CAUTION: As each subassembly is removed from the computer, it should be placed away from the work area
to prevent damage.
Cables and connectors
Most cables used throughout the unit are at, exible cables. These cables must be handled with care to
avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from
the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the
cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts
being removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the
reassembly process. Improper cable placement can damage the computer.
Hard Drives
Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies
to failed drives as well as replacement spares.
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.
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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.
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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
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