HP EliteDesk 800 G5 SFF Maintenance Manual
Maintenance and Service Guide
HP EliteDesk 800 G5 SFF
© Copyright 2018, 2019 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, Optane, 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. NVIDIA and GeForce are
trademarks and/or registered trademarks of
NVIDIA Corporation in the U.S. and other
countries. 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.
Second Edition: September 2019
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
User Guides.
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.
First Edition: May 2018
Document Part Number: L17285-002
Safety warning notice
WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place the
device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do not
allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or
clothing, to block airow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as
pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible
surface temperature limits dened by applicable safety standards.
iii
iv Safety warning notice
Table of contents
1 Product features ........................................................................................................................................... 1
Standard conguration features ........................................................................................................................... 1
Front panel components ........................................................................................................................................ 2
Rear panel components ......................................................................................................................................... 3
Serial number location .......................................................................................................................................... 3
2 Illustrated parts catalog ................................................................................................................................ 4
Computer major components ................................................................................................................................ 4
Miscellaneous parts ............................................................................................................................................... 8
3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................. 10
Electrostatic discharge information .................................................................................................................... 10
Generating static electricity .............................................................................................................. 10
Preventing electrostatic damage to equipment ............................................................................... 11
Personal grounding methods and equipment .................................................................................. 11
Grounding the work area ................................................................................................................... 12
Recommended materials and equipment ........................................................................................ 12
Operating guidelines ........................................................................................................................................... 13
Routine care ......................................................................................................................................................... 13
General cleaning safety precautions ................................................................................................ 13
Cleaning the computer case .............................................................................................................. 13
Cleaning the keyboard ....................................................................................................................... 14
Cleaning the monitor ......................................................................................................................... 14
Cleaning the mouse ........................................................................................................................... 14
Service considerations ......................................................................................................................................... 14
Tools and software requirements ..................................................................................................... 15
Screws ............................................................................................................................................... 15
Cables and connectors ...................................................................................................................... 15
Hard drives ........................................................................................................................................ 15
Lithium coin cell battery .................................................................................................................... 16
SATA hard drives .................................................................................................................................................. 16
SMART ATA drives ................................................................................................................................................ 16
SATA hard drive cables ...................................................................................................................... 16
SATA data cable ............................................................................................................... 16
Cable management ........................................................................................................................... 17
v
4 Removal and replacement procedures ........................................................................................................... 18
Preparation for disassembly ............................................................................................................................... 18
Access panel ......................................................................................................................................................... 19
Front bezel ........................................................................................................................................................... 20
Slim optical drive bezel blank .............................................................................................................................. 21
Front bezel dust lter .......................................................................................................................................... 22
System board connections .................................................................................................................................. 23
Memory ................................................................................................................................................................ 24
Populating DIMM sockets .................................................................................................................. 24
Removing and installing DIMMs ........................................................................................................ 25
Expansion card ..................................................................................................................................................... 27
Drives ................................................................................................................................................................... 31
Drive positions ................................................................................................................................... 31
Removing and installing drives ......................................................................................................... 31
Removing a 9.5 mm slim optical drive ........................................................................... 32
Installing a 9.5 mm slim optical drive ............................................................................ 33
Removing a 3.5-inch hard drive ...................................................................................... 34
Installing a 3.5-inch hard drive ....................................................................................... 37
Drive cage ........................................................................................................................ 41
Removing a 2.5-inch hard drive ...................................................................................... 42
Installing a 2.5-inch hard drive ....................................................................................... 43
Removing and installing an M.2 SSD storage card ......................................................... 45
WLAN module ...................................................................................................................................................... 47
Hood lock ............................................................................................................................................................. 48
Card reader ........................................................................................................................................................... 49
Antennas .............................................................................................................................................................. 50
Air duct ................................................................................................................................................................. 52
Option board ........................................................................................................................................................ 53
Optional rear port ................................................................................................................................................ 54
Fan sink ................................................................................................................................................................ 55
Fan ........................................................................................................................................................................ 58
Processor ............................................................................................................................................................. 59
Power supply ....................................................................................................................................................... 60
Speaker ................................................................................................................................................................ 61
System board ....................................................................................................................................................... 62
System board callouts ....................................................................................................................... 65
Changing from desktop to tower orientation ..................................................................................................... 66
5 Troubleshooting without diagnostics ............................................................................................................ 67
Safety and comfort .............................................................................................................................................. 67
Before you call for technical support .................................................................................................................. 67
vi
Helpful hints ........................................................................................................................................................ 68
Solving general problems .................................................................................................................................... 69
Solving power problems ...................................................................................................................................... 72
Solving hard drive problems ................................................................................................................................ 73
Solving media card reader problems ................................................................................................................... 76
Solving display problems .................................................................................................................................... 77
Solving audio problems ....................................................................................................................................... 81
Solving printer problems ..................................................................................................................................... 83
Solving keyboard and mouse problems .............................................................................................................. 84
Solving hardware installation problems ............................................................................................................. 85
Solving network problems .................................................................................................................................. 87
Solving memory problems .................................................................................................................................. 89
Solving CD-ROM and DVD problems .................................................................................................................... 90
Solving USB ash drive problems ........................................................................................................................ 92
Solving front panel component problems .......................................................................................................... 93
Solving Internet access problems ....................................................................................................................... 93
Solving software problems .................................................................................................................................. 94
6 Computer Setup (F10) Utility ........................................................................................................................ 96
Computer Setup (F10) Utilities ............................................................................................................................ 96
Using Computer Setup (F10) Utilities ................................................................................................ 96
Computer Setup–Main ....................................................................................................................... 98
Computer Setup—Security ............................................................................................................. 100
Computer Setup—Advanced .......................................................................................................... 103
Computer Setup—UEFI Drivers ...................................................................................................... 108
Recovering the Conguration Settings ............................................................................................................. 108
7 POST error messages and diagnostic front panel LEDs and audible codes ....................................................... 109
POST numeric codes and text messages .......................................................................................................... 109
Interpreting system validation diagnostic front panel LEDs and audible codes .............................................. 114
8 Password security and resetting CMOS ........................................................................................................ 116
Resetting the password jumper ........................................................................................................................ 116
Clearing and resetting the BIOS ........................................................................................................................ 118
9 Using HP PC Hardware Diagnostics .............................................................................................................. 119
Using HP PC Hardware Diagnostics Windows (select products only) ............................................................... 119
Downloading HP PC Hardware Diagnostics Windows ..................................................................... 119
Downloading the latest HP PC Hardware Diagnostics Windows version ..................... 120
vii
Downloading HP Hardware Diagnostics Windows by product name or number
(select products only) ................................................................................................... 120
Installing HP PC Hardware Diagnostics Windows ........................................................................... 120
Using HP PC Hardware Diagnostics UEFI ........................................................................................................... 120
Starting HP PC Hardware Diagnostics UEFI .................................................................................... 121
Downloading HP PC Hardware Diagnostics UEFI to a USB ash drive ............................................ 121
Downloading the latest HP PC Hardware Diagnostics UEFI version ............................ 121
Downloading HP PC Hardware Diagnostics UEFI by product name or number
(select products only)
Using Remote HP PC Hardware Diagnostics UEFI settings (select products only) ........................................... 122
Downloading Remote HP PC Hardware Diagnostics UEFI ............................................................... 122
Downloading the latest Remote HP PC Hardware Diagnostics UEFI version ............... 122
Downloading Remote HP PC Hardware Diagnostics UEFI by product name or
number .......................................................................................................................... 122
Customizing Remote HP PC Hardware Diagnostics UEFI settings .................................................. 122
10 Battery replacement ................................................................................................................................ 124
11 Backing up, restoring, and recovering ........................................................................................................ 127
Backing up information and creating recovery media ...................................................................................... 127
Using Windows tools ....................................................................................................................... 127
Using the HP Cloud Recovery Download Tool to create recovery media (select products only) ... 127
Restoring and recovery ..................................................................................................................................... 128
Restoring, resetting, and refreshing using Windows tools ............................................................ 128
Recovering using HP Recovery media ............................................................................................. 128
Changing the computer boot order ................................................................................................ 128
Using HP Sure Recover (select products only) ................................................................................ 129
................................................................................................... 121
12 Power cord set requirements .................................................................................................................... 130
General requirements ........................................................................................................................................ 130
Japanese power cord requirements .................................................................................................................. 130
Country-specic requirements .......................................................................................................................... 131
13 Statement of memory volatility ................................................................................................................ 132
Nonvolatile memory usage ............................................................................................................................... 134
Questions and answers ..................................................................................................................................... 136
Using HP Sure Start (select models only) .......................................................................................................... 137
14 Specications .......................................................................................................................................... 138
viii
Index ........................................................................................................................................................... 139
ix
x
1 Product features
Standard conguration features
Features may vary depending on the model. For support assistance and to learn more about the hardware
and software installed on your computer model, run the HP Support Assistant utility.
NOTE: This computer model can be used in a tower orientation or a desktop orientation. See Changing from
desktop to tower orientation on page 66.
Standard conguration features 1
Front panel components
Drive conguration may vary by model. Some models have a bezel blank covering the slim optical drive bay.
Table 1-1 Front panel components
Front panel components
1 Slim optical drive (optional) 6 USB port with HP Sleep and Charge
2 SD card reader (optional) 7 Audio-out (headphone) jack
3 USB Type-C charging port 8 Audio-out (headphone)/Audio-in (microphone) combo
jack**
4 USB SuperSpeed ports (2)* 9 Hard drive activity light
5 USB port 10 Power button
* This port connects a USB device, provides high-speed data transfer, and even when the computer is o, charges products
such as a cell phone, camera, activity tracker, or smartwatch.
** When a device is plugged into the combo jack, a dialog box is displayed. Select the type of device that is connected.
NOTE: The light on the power button is normally white when the power is on. If it is ashing red, there is a problem with
the computer and it is displaying a diagnostic code. See the Maintenance and Service Guide to interpret the code.
2 Chapter 1 Product features
Rear panel components
Table 1-2 Rear panel components
Rear panel components
1 Audio-in jack 6 DisplayPort monitor connectors (2)
2 Serial port (optional) 7 Optional port
3 RJ-45 (network) jack 8 USB ports (2)
4 Power cord connector 9 USB SuperSpeed ports (4)*
5 Audio-out jack for powered audio devices
* This port connects a USB device, provides high-speed data transfer, and even when the computer is o, charges products such
as a cell phone, camera, activity tracker, or smartwatch.
NOTE: Your model may have additional optional ports available from HP.
When a graphics card is installed in one of the system board slots, the video connectors on the graphics card and/or the
integrated graphics on the system board may be used. The specic graphics card installed and software conguration will
determine the behavior.
The system board graphics can be disabled 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 for use when contacting customer service for assistance.
Rear panel components 3
2 Illustrated parts catalog
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
Computer major components
Item Description
(1) Access panel
(2) Power supply, 250W
(3) Speaker
(4) Fan sink (for use in models with a 95 W processor; includes replacement thermal material)
(5) Fan bae (for use in models with a 95 W processor)
(6) Optional rear port (HDMI, VGA, DP or USB-C port)
(7) Option boards:
VGA option board
4 Chapter 2 Illustrated parts catalog
Item Description
USB-C option board
HDMI option board
DisplayPort option board
Thunderbolt 3 option board (uses PCIe slot; not illustrated)
(8) Rear fan (for use only in models with a 95 W processor)
(9) WLAN modules
Intel® 7265 802.11ac 2 × 2 with Bluetooth® M.2 Combo Card (non-vPro)
Intel 7265 802.11ac 2 × 2 with Bluetooth M.2 Combo Card (vPro)
Intel Dual Band Wireless-AC 9560 802.11ac 2 × 2 Wi-Fi + Bluetooth 5.0 Combo Adapter (vPro)
Intel Dual Band Wireless-AC 9560 802.11ac 2 × 2 Wi-Fi + Bluetooth 5.0 Combo Adapter (non-vPro)
Realtek RTL8821CE 802.11ac 1 × 1 Wi-Fi + Bluetooth 4.2 Combo Adapter (MU-MIMO supported)
Realtek RTL8822BE 802.11ac 2 × 2 Wi-Fi + Bluetooth 4.2 Combo Adapter (MU-MIMO supported)
Intel Wi-Fi 6 AX200 802.11ax 2 × 2 + Bluetooth 5.0 (vPro)
Intel Wi-Fi 6 AX200 802.11ax 2 × 2 + Bluetooth 5.0 (non-vPro)
(10) Solid-state drives, NVMe, M.2 2280, PCIe
2 TB, TLC
1 TB, TLC
512 GB, TLC
512 GB, self-encrypting drive, TLC
512 GB
512 GB solid-state drive with 32 GB Optane memory
280 GB, HHHL
256 GB, TLC
256 GB, self-encrypting drive, TLC
256 GB
128 GB, TLC
128 GB
Optane™ memory module, 16 GB, TLC
(11) Fan bae (for use with processors up to 65 W)
(12) Fan sink (for use with processors up to 65 W; includes replacement thermal material)
(13) Processor (include replacement thermal material; not illustrated)
Intel Core™ i9-9900 processor
Intel Core i9-9900K processor
Intel Core i7-9700 processor
Computer major components 5
Item Description
Intel Core i7-9700K processor
Intel Core i5-9600 processor
Intel Core i5-9600K processor
Intel Core i5-9500 processor
Intel Core i3-9300 processor
Intel Core i3-9100 processor
Intel Core i7-8700 processor
Intel Core i7-8700K processor
Intel Core i5-8600 processor
Intel Core i5-8600K processor
Intel Core i5-8500 processor
Intel Core i3-8033 processor
Intel Pentium™ G5620 processor
Intel Pentium G5600 processor
Intel Pentium G5500 processor
Intel Pentium G5420 processor
Intel Pentium G5400 processor
Intel Celeron™ G4930 processor
Intel Celeron G4900 processor
(14) RTC battery
(15) Bezel blank, slim optical drive
(16) Memory module (UDIMM, non-ECC, 1.2v, PC4-2666)
32 GB
16 GB
8 GB
4 GB
(17) Front bezel
(18) System board (includes replacement thermal material)
(19) Graphics cards (full-height, PCIe x16)
AMD® Radeon™ R7 430, 2 GB
AMD Radeon RX550, 4 GB
NVIDIA® GeForce® GT 730
NVIDIA Quadro P400 , 2 GB
Intel Ethernet I210-T1 PCIe x1 Gb NIC
6 Chapter 2 Illustrated parts catalog
Item Description
Printer port, PCIe x1 card
(20) SATA data cable, 6 inch, 2 straight ends
SATA data cable, 6 inch, 2 straight ends (RF solution)
SATA data cable, 6 inch, 1 straight end, 1 angled end
SATA data cable, 6 inch, 1 straight end, 1 angled end (RF solution)
(21) SATA power cable
Antenna, wireless
(22) Hard drives, 3.5 inch
2 TB, 7200 rpm
2 TB, 5400 rpm, 7 mm
2 TB, 5400 rpm, hybrid SSD, 7 mm
1 TB, 7200 rpm
1 TB, 7200 rpm, 9.5 mm
1 TB, 5400 rpm, hybrid SSD, 9.5 mm
500 GB, 7200 rpm, 7 mm
500 GB, 7200 rpm
500 GB, 7200 rpm, OPAL2, self-encrypting drive (SED), 7 mm
500 GB, 5400 rpm, FIPS, 7 mm
500 GB, 5400 rpm, hybrid SSD, 7 mm
(23) Bezel dust lter
(24) Solid-state drives, 2.5-inch, SATA-3, TLC
512 GB, FIPS-140-2
512 GB, OPAL 2, self-encrypting drive (SED)
512 GB
256 GB, FIPS-140-2
256 GB, OPAL 2, self-encrypting drive (SED)
256 GB
(25) Optical drives, 9.5 mm
DVD Blu-ray writer
DVD±RW drive
DVD-ROM drive
Stand (not illustrated)
Computer major components 7
Miscellaneous parts
Description
HP USB-Type C-to-USB Type-A Hub
SATA drive power cable
DisplayPort cable
DVI monitor cable
Adapters
DisplayPort-to-VGA
DisplayPort-to-DVI
DisplayPort-to-HDMI 2.0
USB Type-C-to-USB 3.0
USB-to-serial port
Keyboard
Washable, PVC, USB/PS2
Grey, USB
Smart card, CCID, USB
Smart card, slim, CCID, USB
USB
Conferencing, USB
Slim, PS/2
USB, slim
Wireless keyboard and mouse
Slim, PCR, USB (Brazil and Latin America)
Antimicrobial, slim
Grey, slim, USB
Collaboration, USB
Collaboration, wireless
Wireless, premium
Premium, USB
Health care, wired, USB
Premium, wireless, keyboard and mouse
Mouse
PS/2, optical
USB, optical
USB, laser
8 Chapter 2 Illustrated parts catalog
Description
USB, premium
USB, antimicrobial
USB/PS2, washable
USB, hardened
USB, grey
USB, heath care, wired
Power cord
Miscellaneous parts 9
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.
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.
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
The following 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.
3-1 Static electricity occurrence based on activity and humidity
Table
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
7,500 V
3,000 V
400 V
400 V
15,000 V
5,000 V
800 V
700 V
35,000 V
12,000 V
6,000 V
2,000 V
10 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Table 3-1 Static electricity occurrence based on activity and humidity (continued)
Relative humidity
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.
NOTE: As little as 700 V 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 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.
2,000 V
3,500 V
7,000 V
5,000 V
4,000 V
5,000 V
20,000 V
11,000 V
11,500 V
14,500 V
26,500 V
21,000 V
● Avoid contact with pins, leads, or circuitry.
● Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive
foam.
Personal grounding methods and equipment
Use the following equipment to prevent static electricity damage to 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
1,500
7,500
15,000
Electrostatic discharge information 11
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 polystyrene
foam.
● Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
Recommended materials and equipment
HP recommends the following 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
12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
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 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 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.
Cleaning the computer case
Follow all safety precautions in General cleaning safety precautions on page 13 before cleaning the computer.
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.
Operating guidelines 13
● 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 13 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 13.
When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 13
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.
● 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
● 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 13.
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 13.
Service considerations
Keep these considerations in mind during the disassembly and assembly of the computer.
14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Tools and software requirements
To service the computer, you need the following tools:
● Torx T-15 screwdriver
● Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
● Phillips P1 screwdriver
● Non-conductive, non-marking pry tool
●
Diagnostics software
Screws
The screws used in the computer are not interchangeable. They could 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 and then returned 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
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 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 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
● Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective
● 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
● Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid
● Do not use excessive force when inserting a drive.
● Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds
and label the package “Fragile: Handle With Care.”
packaging until they are actually mounted in the computer.
computer is on or in standby mode.
touching the connector.
such as monitors or speakers.
Service considerations 15
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 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. In order
to forward them to recycling or proper disposal, please use the public collection system or return them to HP,
their authorized partners, or their agents.
SATA hard drives
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
SMART ATA drives
The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers
have built-in drive failure prediction that warns the user or network administrator of an impending failure or
crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as
reallocated sector count, spin retry count, and calibration retry count. If the drive determines that a failure is
imminent, it generates a fault alert.
SATA hard drive cables
SATA data cable
Always use an HP-approved SATA 6.0 Gbps cable as 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.
The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive.
16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
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 may 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.
SMART ATA drives 17
4 Removal and replacement procedures
Adherence to the procedures and precautions described in this chapter is essential for proper service. After
completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all
components operate properly.
NOTE: Not all features listed in this guide are available on all computers.
Preparation for disassembly
See Routine care, SATA drive guidelines, and disassembly preparation on page 10 for initial safety procedures.
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
IMPORTANT: Turn o the computer before disconnecting any cables.
Regardless of the power-on state, voltage is always present on the system board as long as the system
is plugged into an active AC outlet. In some systems, the cooling fan is on even when the computer is in
the Standby or Suspend modes. Always disconnect the power cord before servicing a unit.
3. Disconnect all external devices from the computer
CAUTION: Beware of sharp edges inside the chassis.
18 Chapter 4 Removal and replacement procedures
Access panel
1. Prepare the computer for disassembly (Preparation for disassembly on page 18).
2. Slide the access panel release lever to the left (1) so that it locks into place. Then slide the access panel
back (2) and lift it o the computer (3).
To install the access panel, reverse the removal procedure.
Access panel 19
Front bezel
1. Prepare the computer for disassembly (Preparation for disassembly on page 18).
2. Remove the access panel (Access panel on page 19).
3. Lift up the three tabs on the top of the bezel (1), and then rotate the bezel o the chassis (2).
To install the front bezel, reverse the removal procedure.
20 Chapter 4 Removal and replacement procedures
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