HP ENWW User Manual
Maintenance and Service Guide
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, security, backing up, and more.
© Copyright 2020 HP Development Company,
L.P.
AMD and Radeon are trademarks of Advanced
Micro Devices, Inc. Bluetooth is a trademark
owned by its proprietor and used by HP Inc.
under license. Intel, Celeron, Core, Optane,
Pentium, Thunderbolt, and vPro are trademarks
of Intel Corporation or its subsidiaries in the U.S.
and/or other countries. Microsoft and Windows
are either registered trademarks or trademarks
of Microsoft Corporation in the United States
and/or other countries. USB Type-C and USB-C
are registered trademarks of USB Implementers
Forum. DisplayPort and the DisplayPort logo are
trademarks owned by the Video Electronics
Standards Association (VESA) in the United
States and other countries.
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: August 2020
Product notice
This guide describes features that are common
to most models. Some features may not be
available on your computer.
Not all features are available in all editions or
versions of Windows. Systems may require
upgraded and/or separately purchased
hardware, drivers, software or BIOS update to
take full advantage of Windows functionality.
Windows 10 is automatically updated, which is
always enabled. ISP fees may apply and
additional requirements may apply over time for
updates. Go to http://www.microsoft.com for
details.
To access the latest user guides, go to
http://www.hp.com/support, and follow the
instructions to nd your product. Then select
Manuals.
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.
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.
Document Part Number: M05547-001
Safety warning notice
Reduce the possibility of heat-related injuries or of overheating the computer by following the practices
described.
WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the
computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, at surface.
Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs
or clothing, to block airow. Also, do not allow the AC adapter to come into contact with the skin or a soft surface,
such as pillows or rugs or clothing, during operation. The computer and the AC adapter comply with the useraccessible surface temperature limits dened by applicable safety standards.
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iv Safety warning notice ENWW
Table of contents
1 Product features ....................................................................................................................................................................................... 1
Standard conguration features ............................................................................................................................................ 1
Front panel components ......................................................................................................................................................... 1
Rear panel components .......................................................................................................................................................... 2
Serial number location ............................................................................................................................................................. 2
2 Illustrated parts catalog ........................................................................................................................................................................... 5
Computer major components ................................................................................................................................................ 5
Mass storage devices ............................................................................................................................................................... 8
Cables ......................................................................................................................................................................................... 9
Miscellaneous parts ................................................................................................................................................................. 9
3 Routine care, SATA drive guidelines, and disassembly preparation ............................................................................................... 11
Electrostatic discharge information .................................................................................................................................... 12
Generating static electricity ............................................................................................................................. 12
Preventing electrostatic damage to equipment ........................................................................................... 13
Personal grounding methods and equipment .............................................................................................. 13
Grounding the work area .................................................................................................................................. 13
Recommended materials and equipment ..................................................................................................... 14
Operating guidelines .............................................................................................................................................................. 14
Routine care ............................................................................................................................................................................ 16
General cleaning safety precautions .............................................................................................................. 16
Cleaning the computer case ............................................................................................................................ 16
Cleaning the keyboard ...................................................................................................................................... 16
Cleaning the monitor ........................................................................................................................................ 17
Cleaning the mouse .......................................................................................................................................... 17
Service considerations .......................................................................................................................................................... 18
Tools and software requirements .................................................................................................................. 18
Screws ................................................................................................................................................................. 18
Cables and connectors ..................................................................................................................................... 18
Hard drives ......................................................................................................................................................... 18
ENWW v
Lithium coin cell battery ................................................................................................................................... 19
SATA hard drives ..................................................................................................................................................................... 19
Cable management ............................................................................................................................................................... 20
4 Removal and replacement procedures .............................................................................................................................................. 21
Preparation for disassembly ................................................................................................................................................ 21
Access panel ........................................................................................................................................................................... 21
Optical drive ............................................................................................................................................................................ 22
Front bezel .............................................................................................................................................................................. 23
Hood sensor module ............................................................................................................................................................. 24
Memory modules (DIMMs) .................................................................................................................................................... 25
Expansion card ....................................................................................................................................................................... 28
Drive cage ................................................................................................................................................................................ 29
Hard drive ................................................................................................................................................................................ 30
Speaker .................................................................................................................................................................................... 34
WLAN module ......................................................................................................................................................................... 35
Solid-state drive ..................................................................................................................................................................... 37
Fan shroud ............................................................................................................................................................................... 38
Heat sink .................................................................................................................................................................................. 39
Processor ................................................................................................................................................................................. 40
Power supply .......................................................................................................................................................................... 42
Battery ..................................................................................................................................................................................... 43
System board .......................................................................................................................................................................... 46
System board callouts ........................................................................................................................................................... 47
5 Troubleshooting without diagnostics ................................................................................................................................................. 49
Before you call for technical support .................................................................................................................................. 49
Helpful hints ............................................................................................................................................................................ 50
Solving general problems ..................................................................................................................................................... 51
Cannot access the Computer Setup (F10) Utility when booting the computer ....................................... 51
Computer appears locked up and will not turn o when the power button is pressed ........................ 51
Computer will not respond to keyboard or mouse ...................................................................................... 51
Computer date and time display is incorrect ................................................................................................ 51
There is no sound or sound volume is too low ............................................................................................. 52
Cannot remove computer cover or access panel ......................................................................................... 52
Poor performance ............................................................................................................................................. 52
Computer powered o automatically and the power light blinks red four times and then white
two times ............................................................................................................................................................ 53
System does not turn on and the lights on the front of the computer are not blinking ....................... 53
Solving power problems ....................................................................................................................................................... 55
Power supply shuts down intermittently ...................................................................................................... 55
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Computer turned o automatically, power light blinks red two times followed by a two-second
pause, and the computer beeps two times (Beeps stop after fth iteration but lights continue
blinking) ............................................................................................................................................................... 55
Power light blinks red four times followed by a two-second pause and the computer beeps four
times (Beeps stop after fth iteration but lights continue blinking) ......................................................... 55
Solving hard drive problems ................................................................................................................................................ 57
Hard drive error occurs ..................................................................................................................................... 57
Disk transaction problem ................................................................................................................................. 57
Drive not found (identied) .............................................................................................................................. 57
Nonsystem disk/NTLDR missing message ................................................................................................... 57
Computer will not boot from hard drive ........................................................................................................ 58
Computer appears locked up and will not turn o when the power button is pressed ........................ 58
Solving audio problems ........................................................................................................................................................ 59
Sound cuts in and out ....................................................................................................................................... 59
Sound does not come out of the speaker or headphones ......................................................................... 59
Computer appears to be locked up while recording audio ......................................................................... 59
Line-in jack is not functioning properly .......................................................................................................... 60
Solving printer problems ...................................................................................................................................................... 61
Printer will not print .......................................................................................................................................... 61
Printer will not turn on ...................................................................................................................................... 61
Printer prints garbled information .................................................................................................................. 61
Printer will not print .......................................................................................................................................... 61
Solving keyboard and mouse problems ............................................................................................................................. 63
Keyboard commands and typing are not recognized by the computer ................................................... 63
Mouse does not respond to movement or is too slow ................................................................................ 63
Solving hardware installation problems ............................................................................................................................. 64
A new device is not recognized as part of the system ................................................................................ 64
Computer will not start ..................................................................................................................................... 64
Power light blinks red three times and then white two times ................................................................... 65
Solving network problems .................................................................................................................................................... 66
Network driver does not detect network controller .................................................................................... 66
Network status link light never blinks ............................................................................................................ 66
Diagnostics reports a failure ............................................................................................................................ 66
Diagnostics passes, but the computer does not communicate with the network ................................. 67
Network controller stopped working when an expansion board was added to the computer ............ 67
Network controller stops working without apparent cause ....................................................................... 67
Cannot connect to network server when attempting remote system installation ................................ 67
System setup utility reports unprogrammed EEPROM ............................................................................... 68
Solving memory problems ................................................................................................................................................... 69
System will not boot or does not function properly after installing additional memory modules ...... 69
Out of memory error ......................................................................................................................................... 69
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Memory count during POST is wrong ............................................................................................................. 69
Insucient memory error during operation. ................................................................................................. 70
Power light blinks red ve times followed by a two-second pause and the computer beeps ve
times (Beeps stop after fth iteration but lights continue blinking) ......................................................... 70
Solving USB ash drive problems ........................................................................................................................................ 71
USB ash drive is not seen as a drive letter in Windows ............................................................................ 71
USB ash drive not found (identied) ............................................................................................................ 71
System will not boot from USB ash drive .................................................................................................... 71
The computer boots to DOS after making a bootable ash drive ............................................................. 71
Solving internet access problems ....................................................................................................................................... 72
Unable to connect to the internet ................................................................................................................... 72
Cannot automatically launch internet programs ......................................................................................... 72
Solving software problems .................................................................................................................................................. 73
Computer will not start up and the HP logo does not appear .................................................................... 73
“Illegal Operation has Occurred” error message is displayed .................................................................... 73
6 Computer Setup (F10) Utility ................................................................................................................................................................ 75
Using Computer Setup (F10) Utilities .................................................................................................................................. 75
Computer Setup—Main ........................................................................................................................................................ 76
Computer Setup—Security .................................................................................................................................................. 79
Computer Setup—Advanced ............................................................................................................................................... 83
7 POST error messages ............................................................................................................................................................................ 91
POST numeric codes and text messages ........................................................................................................................... 91
Interpreting POST diagnostic front panel lights and audible codes ............................................................................... 95
8 Password security and resetting CMOS .............................................................................................................................................. 99
Changing a setup or power-on password .......................................................................................................................... 99
Deleting a setup or power-on password ......................................................................................................................... 100
9 Using HP PC Hardware Diagnostics ................................................................................................................................................... 101
Using HP PC Hardware Diagnostics Windows (select products only) ......................................................................... 102
Using an HP PC Hardware Diagnostics Windows hardware failure ID code .......................................... 102
Accessing HP PC Hardware Diagnostics Windows ..................................................................................... 103
Accessing HP PC Hardware Diagnostics Windows from HP Help and Support ................ 103
Accessing HP PC Hardware Diagnostics Windows from Support Assistant ...................... 103
Downloading HP PC Hardware Diagnostics Windows ............................................................................... 104
Downloading the latest HP PC Hardware Diagnostics Windows version from HP .......... 104
Downloading the HP PC Hardware Diagnostics Windows from the Microsoft Store ....... 104
viii ENWW
Downloading HP Hardware Diagnostics Windows by product name or number
(select products only) ................................................................................................................ 104
Installing HP PC Hardware Diagnostics Windows ...................................................................................... 104
Using HP PC Hardware Diagnostics UEFI ......................................................................................................................... 105
Using an HP PC Hardware Diagnostics UEFI hardware failure ID code ................................................... 105
Starting HP PC Hardware Diagnostics UEFI ................................................................................................ 105
Downloading HP PC Hardware Diagnostics UEFI to a USB ash drive .................................................... 106
Downloading the latest HP PC Hardware Diagnostics UEFI version ................................... 106
Downloading HP PC Hardware Diagnostics UEFI by product name or number (select
products only) ............................................................................................................................. 106
Using Remote HP PC Hardware Diagnostics UEFI settings (select products only) ................................................... 107
Downloading Remote HP PC Hardware Diagnostics UEFI ........................................................................ 108
Downloading the latest Remote HP PC Hardware Diagnostics UEFI version ................... 108
Downloading Remote HP PC Hardware Diagnostics UEFI by product name or number 108
Customizing Remote HP PC Hardware Diagnostics UEFI settings .......................................................... 108
10 Backing up, restoring, and recovering ............................................................................................................................................ 109
Backing up information and creating recovery media ................................................................................................... 110
Using Windows tools for backing up ............................................................................................................ 110
Using the HP Cloud Recovery Download Tool to create recovery media (select products only) ........ 110
Restoring and recovering your system ............................................................................................................................ 111
Creating a system restore ............................................................................................................................. 111
Restoring and recovery methods ................................................................................................................. 111
Recovering using HP Recovery media ......................................................................................................... 111
Changing the computer boot order ............................................................................................................. 112
Using HP Sure Recover (select products only) ........................................................................................... 112
11 Statement of memory volatility ...................................................................................................................................................... 113
Current BIOS steps ............................................................................................................................................................... 113
Nonvolatile memory usage ................................................................................................................................................ 115
Questions and answers ...................................................................................................................................................... 117
Using HP Sure Start (select products only) ..................................................................................................................... 119
12 Power cord set requirements .......................................................................................................................................................... 121
General requirements ......................................................................................................................................................... 121
Japanese power cord requirements ................................................................................................................................. 121
Country-specic requirements .......................................................................................................................................... 121
13 Specications ..................................................................................................................................................................................... 123
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Index ........................................................................................................................................................................................................... 125
x ENWW
1 Product features
This chapter provides you with an overview of your computer's features.
Standard conguration features
Features can vary, depending on the model. For support assistance and to learn more about the hardware and
software installed on your computer model, run the HP Support Assistant utility.
NOTE: You can use this computer model in a tower orientation or a desktop orientation. In a tower orientation,
you must use a stand for support.
Front panel components
To identify the front panel components, use this illustration and table. Drive conguration varies by model. Some
models have a bezel blank that covers one or more drive bays.
Table
1-1 Front panel components and their descriptions
Item Component Item Component
1 Slim optical drive (select products only) 5 USB Type-A port
ENWW Standard conguration features 1
Table 1-1 Front panel components and their descriptions (continued)
Item Component Item Component
2 Memory card reader (select models only) 6 Audio-out (headphone)/Audio-in (microphone) combo
3 USB Type-C® charging port 7 Power button
4 USB SuperSpeed ports (3) 8 Hard drive activity light
NOTE: The combo jack supports headphones, line output devices, microphones, line input devices, or CTIA style headsets.
NOTE: The light on the power button is normally white when the power is on. If the light ashes red, the computer displays a diagnostic
code to indicate a problem.
Rear panel components
To identify the rear panel components, use this illustration and table.
jack
Table 1-2 Rear panel components and their descriptions
Item Component Item Component
1 Serial port (optional) 7 DisplayPort™ monitor connectors (2)
2 Cable lock tab 8 Optional port
3 Security lock 9 USB ports (2)
4 RJ-45 (network) jack 10 USB SuperSpeed ports (3)
5 Thumbscrew 11 Power cord connector
6 Audio-out jack for powered audio devices
NOTE: Your model might have additional optional ports available from HP.
When a graphics card is installed in one of the system board slots, you can use the video connectors on the graphics card or the integrated
graphics on the system board. The specic graphics card installed and software conguration determines the behavior.
You can disable the system board graphics by changing settings in BIOS F10 Setup.
Serial number location
Each computer has a unique serial number and a product ID number that are located on the exterior of the
computer. Keep these numbers available when contacting customer service for assistance.
2 Chapter 1 Product features ENWW
ENWW Serial number location 3
4 Chapter 1 Product features ENWW
2 Illustrated parts catalog
Use this information to determine the spare parts that are available for the computer.
NOTE: HP continually improves and changes product parts. For complete and current information about
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow
the on-screen instructions.
Computer major components
To identify the computer major components, use this illustration and table.
Table 2-1 Computer major components and their descriptions
Item Description
(1) Access panel
(2) Power supply, 180 W, EPA 90% eciency
(3) Optical disc drive:
DVD BD-WRITER DRIVE (9.5 mm, UST, 6×)
DVD+/-RW SM DL DRIVE (9.5 mm, slim, tray load)
DVD-ROM DRIVE (9.5 mm, slim, tray load)
Optical disc drive, slim blank bezel (Pro, SFF)
Optical disc drive, slim bezel assembly)
ENWW 5
Table 2-1 Computer major components and their descriptions (continued)
Item Description
(4) Memory module (UDIMM, 1.2 V, DDR4-3200, NECC):
32 GB
16 GB
8 GB
4 GB
Memory module (UDIMM, 1.2 V, DDR4-2666, NECC):
32 GB
16 GB
8 GB
4 GB
(5) System board (includes replacement thermal material):
Equipped with the NetC and Windows® 10 operating systems
Equipped with the NetC operating system
Equipped with the Windows 10 operating system
Not equipped with an operating system
(6) WLAN module:
Intel Wi-Fi 6 AX201 ax 2×2 + Bluetooth® 5 non-vPro™ WW
Intel Wi-Fi 6 AX201 ax 2×2 + Bluetooth 5 vPro WW
Realtek RTL8821CE ac 1×1 + Bluetooth 4.2 WW
Realtek RTL8822CE ac 2×2 + Bluetooth 5 M.2 2230 WW
(7) Solid-state drive:
1 TB, M.2 2280, NVMe, SuperSpeed (SS) solid-state drive with triple layer cell (TLC)
512 GB, M.2 2280, PCIe, NVMe, SS solid-state drive with TLC
512 GB, M.2 2280, PCIe-3×4, self-encrypting drive (SED) solid-state drive with TLC
512 GB, M.2 2280, PCIe, NVMe, value solid-state drive
256 GB, M.2 2280, PCIe, NVMe, SS solid-state drive with TLC
256 GB, M.2 2280, PCIe-3×4, SED solid-state drive with TLC
256 GB, M.2 2280, PCIe, NVMe, value solid-state drive
128 GB, M.2 2280, PCIe, NVMe solid-state drive with TLC
16 GB, M.2 2280, PCIe-3×2, NVMe solid-state drive with TLC
256 GB, M.2 2280, PCIe + 16 GB 3D solid-state drive
512 GB, M.2 2280, PCIe, NVMe + 32 GB 3D solid-state drive
(8) System chassis (includes drive cage)
6 Chapter 2 Illustrated parts catalog ENWW
Table 2-1 Computer major components and their descriptions (continued)
Item Description
(9) Fan shroud
(10) Speaker (includes cable)
(11) PCIe expansion card:
AMD® Radeon® RX 550X 4 GB LP PCIe×16 DP+HDMI
AMD Radeon RX 550X 4 GB DisplayPort card
AMD Radeon R7 430 2 GB 2 DisplayPort 64 bit card
AMD Radeon R7 430 2 GB DisplayPort VGA 64 bit card
AMD Radeon R7 430 2 GB LP 2DP PCIe×16 64 bit GFX
AMD Radeon R7 430 2 GB LP PCIe×16 DP VGA 64 bit
(12) Heat sink
(13) Hood sensor
(14) Processor:
Intel® Core® i7-10700 2.9 GHz, 8 cores, 65 W
Intel Core i5-10600 3.3 GHz, 6 cores, 65 W
Intel Core i5-10500 3.1 GHz, 6 cores, 65 W
Intel Core i5-10400 2.9 GHz, 6 cores, 65 W
Intel Core i3-10320 3.8 GHz, 4 cores, 65 W
Intel Core i3-10300 3.7 GHz, 4 cores, 65 W
Intel Core i3-10100 3.6 GHz, 4 cores, 65 W
Intel Pentium® Gold G6600 4.2 GHz, 2 cores, 58 W
Intel Pentium Gold G6500 4.1 GHz, 2 cores, 58 W
Intel Pentium Gold G6400 4.0 GHz, 2 cores, 58 W
Intel Celeron® G5920 3.5 GHz, 2 cores, 58 W
Intel Celeron G5900 3.4 GHz, 2 cores, 58 W
(15) Hard drive:
2 TB, SATA, 7200 RPM, 3.5 in hard drive
2 TB, SATA, 5400 RPM, 7.0 mm hard drive
1 TB, SATA, 7200 RPM, 3.5 in hard drive
1 TB, SATA, 7200 RPM, 9.5 mm hard drive
500 GB, SATA, 7200 RPM, 3.5 in
500 GB, SATA, 7200 RPM, 7.0 mm
500 GB, SATA, 7200 RPM, 7.0 mm, FIPS
ENWW Computer major components 7
Table 2-1 Computer major components and their descriptions (continued)
Item Description
500 GB, 7200 RPM, 7.0 mm, SED, Opal2
(16) Front bezel
Mass storage devices
To identify the available hard drives, solid-state drives, and optical drives, use this table.
Table 2-2 Hard drives and their descriptions
Description
Hard drives:
2 TB, SATA, 7200 RPM, 3.5 in hard drive
2 TB, SATA, 5400 RPM, 7.0 mm hard drive
1 TB, SATA, 7200 RPM, 3.5 in hard drive
1 TB, SATA, 7200 RPM, 9.5 mm hard drive
500 GB, SATA, 7200 RPM, 3.5 in
500 GB, SATA, 7200 RPM, 7.0 mm
500 GB, SATA, 7200 RPM, 7.0 mm, FIPS
500 GB, 7200 RPM, 7.0 mm, SED, Opal2
Solid-state drives:
1 TB, M.2 2280, NVMe, SS solid-state drive with TLC
512 GB, M.2 2280, PCIe, NVMe, SS solid-state drive with TLC
512 GB, M.2 2280, PCIe-3×4, SED solid-state drive with TLC
512 GB, M.2 2280, PCIe, NVMe, value solid-state drive
256 GB, M.2 2280, PCIe, NVMe, SS solid-state drive with TLC
256 GB, M.2 2280, PCIe-3×4, SED solid-state drive with TLC
256 GB, M.2 2280, PCIe, NVMe, value solid-state drive
128 GB, M.2 2280, PCIe, NVMe solid-state drive with TLC
16 GB, M.2 2280, PCIe-3×2, NVMe solid-state drive with TLC
256 GB, M.2 2280, PCIe + 16 GB 3D solid-state drive
512 GB, M.2 2280, PCIe, NVMe + 32 GB 3D solid-state drive
Optical disc drives:
DVD BD-WRITER DRIVE (9.5 mm, UST, 6×)
DVD+/-RW SM DL DRIVE (9.5 mm, slim, tray load)
DVD-ROM DRIVE (9.5 mm, slim, tray load)
8 Chapter 2 Illustrated parts catalog ENWW
Cables
Table 2-2 Hard drives and their descriptions (continued)
Description
Optical disc drive, slim blank bezel (Pro, SFF)
Optical disc drive, slim bezel assembly)
To identify the computer cables, use this table.
Table 2-3 Cables and their descriptions
Description
SATA power cable
Wireless antenna cables
Adapter, DisplayPort-to-HDMI 1.4
Adapter, DisplayPort-to-VGA
Adapter, DisplayPort-to-DVI
Adapter, USB-to-serial
Cable, DisplayPort-to-HDMI
DisplayPort cable
Grommet, hard drive
Miscellaneous parts
To identify the various computer parts, use this table.
Table
2-4 Miscellaneous parts and their descriptions
Description
Light cover
Mouse
USB, laser
USB, optical
Keyboard
USB
Wireless + cable adapter + mouse
ENWW Cables 9
10 Chapter 2 Illustrated parts catalog ENWW
3 Routine care, SATA drive guidelines, and
disassembly preparation
This information provides general service information for the computer. Adherence to the procedures and
precautions is essential for proper service.
IMPORTANT: 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.
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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) might not appear to be aected at all and can work
perfectly throughout a normal cycle. The device might 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.
IMPORTANT: To prevent damage to the device when you are removing or installing internal components,
observe these precautions:
Keep components in their electrostatic-safe containers until you are ready to install them.
Before touching an electronic component, discharge static electricity by using the guidelines described in this
section.
Avoid touching pins, leads, and circuitry. Handle electronic components as little as possible.
If you remove a component, place it in an electrostatic-safe container.
Generating static electricity
This table shows how humidity aects the electrostatic voltage levels generated by dierent activities. A product
can be degraded by 700 V.
● Dierent activities generate dierent amounts of static electricity.
● Static electricity increases as humidity decreases.
Table
3-1 Static electricity occurrence based on activity and humidity
Relative humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl oor
Motions of bench worker
Removing DIPs (dual in-line packages) from plastic tube
Removing DIPs from vinyl tray
Removing DIPs from polystyrene foam
Removing bubble pack from PCB (printed circuit board)
Packing PCBs in foam-lined box
Multiple electric components can be packaged together in plastic tubes, trays, or polystyrene foam.
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
12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation ENWW
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 static electricity
damage to electronic components.
● To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
● Protect all electrostatic parts and assemblies with conductive or approved containers or packaging.
● Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.
● Place items on a grounded surface before removing them from their container.
● Always be properly grounded when touching a sensitive component or assembly.
● Avoid contact with pins, leads, or circuitry.
● Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive foam.
Personal grounding methods and equipment
Use this equipment to prevent static electricity damage to electronic components.
● Wrist straps are exible straps with a maximum of 1 MΩ ±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 1 MΩ ±10% resistance between the operator and ground.
Table
3-2 Static shielding protection levels
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 these 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.
1,500
7,500
15,000
● 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.
ENWW Electrostatic discharge information 13
● Keep work area free of nonconductive materials such as ordinary plastic assembly aids and polystyrene
foam.
● Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
Recommended materials and equipment
HP recommends the these materials and equipment to prevent static electricity.
● 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 1 MΩ ±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 1 MΩ ±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
This information details how 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.
14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation ENWW
● Do not stack computers on top of each other or place computers so near each other that they are subject
to each other’s recirculated 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 previously 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.
ENWW Operating guidelines 15
Routine care
Use this information to properly care for your computer.
General cleaning safety precautions
Use this information to safely clean your computer.
1. Never use solvents or ammable solutions to clean the computer.
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use the
cloth on the component.
3. Always unplug the computer when cleaning with liquids or damp cloths.
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5. Disconnect the keyboard before cleaning it.
6. Wear safety glasses equipped with side shields when cleaning the keyboard.
Cleaning the computer case
Follow all safety precautions before cleaning the computer case.
To clean the computer case, follow these procedures:
● 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 because the alcohol evaporates
quickly and does 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
Use this information to properly clean the keyboard. Follow all safety precautions 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 16
before following these procedures.
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the
keys.
● You can remove visible debris underneath or between the keys by vacuuming or shaking.
● You can use canned, pressurized air to clean debris from under the keys. Use caution because too much air
pressure can dislodge lubricants applied under the wide keys.
16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation ENWW
● 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.
IMPORTANT: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard might not function properly.
● You can clean under a key 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
Use this information to properly clean 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 can 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 16.
Cleaning the mouse
Use this information to properly clean the mouse.
Before cleaning the mouse, be sure 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.
ENWW Routine care 17
Service considerations
Keep these considerations in mind during the disassembly and assembly of the computer.
Tools and software requirements
Servicing the computer requires these tools.
● Torx T-15 screwdriver
● Flat-bladed screwdriver (can sometimes be used in place of the Torx screwdriver)
● Phillips P1 screwdriver
● Nonconductive, nonmarking pry tool
● Diagnostics software
Screws
The screws used in the computer are not interchangeable. They could have standard or metric threads and
might be of dierent lengths.
If you use an incorrect screw during the reassembly process, it can damage the unit. HP strongly recommends
that you keep all screws that you remove during disassembly with the removed part and then return them to
their proper locations.
IMPORTANT: As you remove each subassembly from the computer, place it away from the work area to
prevent damage.
Cables and connectors
Use this information properly handle cables.
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 route
the cables so that they cannot be caught or snagged by parts being removed or replaced.
IMPORTANT: When servicing this computer, be sure to place cables 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 advice
applies to failed drives as well as replacement spares.
● If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging and
label the package “Fragile: Handle With Care.”
● Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective
packaging until they are actually mounted in the computer.
● Avoid dropping drives from any height onto any surface.
● If you are inserting or removing a hard drive, turn o the computer. Do not remove a hard drive while the
computer is on or in standby mode.
18 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation ENWW
● Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid
touching the connector.
● Do not use excessive force when inserting a drive.
● Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds such
as monitors or speakers.
Lithium coin cell battery
The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of
approximately three years.
See the appropriate removal and replacement chapter for the chassis that you are working on 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 of in water or re, or
expose it to temperatures higher than 140°F (60°C). Do not attempt to recharge the battery.
NOTE: Do not dispose of batteries, battery packs, and accumulators with general household waste. To forward
them to recycling centers or proper disposal, use the public collection system or return them to HP, their
authorized partners, or their agents.
SATA hard 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.
Table
3-3 SATA hard drive characteristics
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 100 cm (39.37 in)
Data interface voltage dierential 400 mV–700 mV
Drive voltages 3.3 V, 5 V, 12 V
Jumpers for conguring drive N/A
Data transfer rate 6.0 Gbps
Always use an HP-approved SATA 6.0 Gbps cable because it is fully backwards compatible with the SATA 1.5
Gbps drives. Current HP desktop products ship with SATA 6.0 Gbps hard drives.
SATA data cables are susceptible to damage if overexed. Never crease a SATA data cable and never bend it
tighter than a 30 mm (1.18 in) radius.
ENWW SATA hard drives 19
The SATA data cable is a thin, seven-pin cable designed to transmit data for only a single drive.
Cable management
Always follow good cable management practices when working inside the computer.
● Keep cables away from major heat sources like the heat sink.
● Keep cables clear of sliding or moveable parts to prevent them from being cut or crimped when the parts
are moved.
● When folding a at ribbon cable, never fold to a sharp crease. Sharp creases can damage the wires.
● Do not bend any cable sharply. A sharp bend can break the internal wires.
● Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.
● Never crease a SATA data cable.
20 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation ENWW
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