HP 402 G1 User Manual
Maintenance & Service Guide
HP 402 G1 Small Form Factor Business PC
© Copyright 2014 Hewlett-Packard
Development Company, L.P. The information
contained herein is subject to change without
notice.
Intel and Pentium are trademarks of Intel
Corporation in the U.S. and other countries.
Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company under license. Microsoft, Windows,
WIndows 7, and Windows 8 are U.S. registered
trademarks of the Microsoft group of
companies. SD Logo is a trademark of its
proprietor.
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.
This document contains proprietary
information that is protected by copyright. No
part of this document may be photocopied,
reproduced, or translated to another language
without the prior written consent of HewlettPackard Company.
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 on all editions of
Windows 8. This computer may require
upgraded and/or separately purchased
hardware, drivers, and/or software to take full
advantage of Windows 8 functionality. See
http://www.microsoft.com for details.
This computer may require upgraded and/ or
separately purchased hardware and/or a DVD
drive to install the Windows 7 software and
take full advantage of Windows 7 functionality.
See http://windows.microsoft.com/en-us/
windows7/get-know-windows-7 for details.
First Edition (July 2014)
Document Part Number: 764147-001
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, flat 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 airflow. 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 useraccessible surface temperature limits defined by the International Standard for Safety of Information
Technology Equipment (IEC 60950).
iii
iv Safety warning notice
Table of contents
1 Product features ........................................................................................................................................... 1
Standard configuration features ........................................................................................................................... 1
Front panel components ....................................................................................................................................... 1
Rear panel components ......................................................................................................................................... 2
Serial number location .......................................................................................................................................... 2
2 Activating and customizing the software ........................................................................................................ 3
Activating and customizing the software in Windows 8 ....................................................................................... 3
Activating the Windows operating system ......................................................................................... 3
Downloading Windows 8 updates ....................................................................................................... 3
Customizing the monitor display ........................................................................................................ 3
3 Illustrated parts catalog ................................................................................................................................ 4
Major components ................................................................................................................................................. 4
Miscellaneous parts ............................................................................................................................................... 5
Mass storage devices ............................................................................................................................................. 6
4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation .............................................. 7
SATA hard drives .................................................................................................................................................... 7
SATA hard drive cables .......................................................................................................................................... 7
SATA data cable ................................................................................................................................... 7
SMART ATA drives .................................................................................................................................................. 8
Electrostatic discharge information ...................................................................................................................... 8
Generating static ................................................................................................................................. 8
Preventing electrostatic damage to equipment ................................................................................ 8
Personal grounding methods and equipment .................................................................................... 9
Grounding the work area ..................................................................................................................... 9
Recommended materials and equipment ........................................................................................ 10
Operating guidelines ........................................................................................................................................... 10
Routine care ......................................................................................................................................................... 11
General cleaning safety precautions ................................................................................................ 11
Cleaning the computer case .............................................................................................................. 11
Cleaning the keyboard ...................................................................................................................... 11
Cleaning the display .......................................................................................................................... 12
Cleaning the mouse ........................................................................................................................... 12
Service considerations ........................................................................................................................................ 12
v
Tools and software requirements .................................................................................................... 12
Screws ............................................................................................................................................... 12
Cables and connectors ...................................................................................................................... 13
Hard drives ........................................................................................................................................ 13
Lithium coin cell battery ................................................................................................................... 13
5 Removal and replacement procedures ........................................................................................................... 14
Preparing to disassemble the computer ............................................................................................................. 14
Access panel ........................................................................................................................................................ 15
Installing and removing drives ............................................................................................................................ 16
Removing a slim optical disc drive .................................................................................................... 16
Installing a slim optical disc drive ..................................................................................................... 19
Removing and replacing a 3.5-inch hard drive ................................................................................. 21
Front bezel ........................................................................................................................................................... 25
Memory ................................................................................................................................................................ 27
Expansion cards ................................................................................................................................................... 29
Fan ....................................................................................................................................................................... 31
RTC battery .......................................................................................................................................................... 33
Fan sink ................................................................................................................................................................ 34
Processor ............................................................................................................................................................. 36
Power supply ....................................................................................................................................................... 38
System board ....................................................................................................................................................... 40
System board callouts ...................................................................................................................... 43
6 Computer Setup (F10) Utility ........................................................................................................................ 45
Computer Setup (F10) Utilities ............................................................................................................................ 45
Using Computer Setup (F10) Utilities ............................................................................................... 46
Computer Setup—File ...................................................................................................................... 47
Computer Setup—Storage ............................................................................................................... 48
Computer Setup—Security ............................................................................................................... 49
Computer Setup—Power .................................................................................................................. 53
Computer Setup—Advanced ............................................................................................................ 54
Recovering the configuration settings ................................................................................................................ 56
7 Troubleshooting without diagnostics ............................................................................................................ 57
Safety and comfort .............................................................................................................................................. 57
Before you call for technical support .................................................................................................................. 57
Helpful hints ........................................................................................................................................................ 58
Solving general problems ................................................................................................................................... 59
Solving power problems ...................................................................................................................................... 63
vi
Solving hard drive problems ............................................................................................................................... 64
Solving media card reader problems .................................................................................................................. 66
Solving display problems .................................................................................................................................... 67
Solving audio problems ....................................................................................................................................... 71
Solving printer problems ..................................................................................................................................... 73
Solving keyboard and mouse problems ............................................................................................................. 74
Solving hardware installation problems ............................................................................................................. 75
Solving network problems .................................................................................................................................. 77
Solving memory problems .................................................................................................................................. 81
Solving processor problems ................................................................................................................................ 82
Solving CD-ROM and DVD problems .................................................................................................................... 83
Solving USB flash drive problems ....................................................................................................................... 85
Solving front panel component problems .......................................................................................................... 85
Solving internet access problems ....................................................................................................................... 86
Solving software problems ................................................................................................................................. 87
Contacting customer support ............................................................................................................................. 88
8 HP PC Hardware Diagnostics ......................................................................................................................... 89
Why run HP PC Hardware Diagnostics – UEFI ...................................................................................................... 89
How to access and run HP PC Hardware Diagnostics - UEFI ............................................................................... 89
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 89
9 Backup and Recovery ................................................................................................................................... 91
Backup and recovery in Windows 8 ..................................................................................................................... 91
Backing up your information ............................................................................................................ 91
Performing a system recovery ......................................................................................................... 92
Using the Windows recovery tools ................................................................................. 92
Using f11 recovery tools ................................................................................................. 93
Using Windows 8 operating system media (purchased separately) ............................. 93
10 POST Error Messages ................................................................................................................................. 94
POST Numeric Codes and Text Messages ........................................................................................................... 94
Interpreting POST diagnostic front panel LEDs ................................................................................................ 100
11 Password Security and Resetting CMOS ..................................................................................................... 103
Establishing a Setup or Power-on password .................................................................................................... 103
Resetting the Setup and Power-on password .................................................................................................. 104
Clearing and resetting the CMOS ....................................................................................................................... 104
vii
Appendix A Power Cord Set Requirements ...................................................................................................... 106
General requirements ....................................................................................................................................... 106
Japanese Power Cord Requirements ................................................................................................................ 106
Country-specific requirements ......................................................................................................................... 107
Appendix B Statement of Volatility ................................................................................................................ 108
Appendix C Specifications ............................................................................................................................. 110
Specifications .................................................................................................................................................... 110
Index ........................................................................................................................................................... 111
viii
1 Product features
Standard configuration features
Features may vary depending on the model. For a complete listing of the hardware and software installed in
the computer, run the diagnostic utility (included on some computer models only).
NOTE: This computer model can be used in a tower orientation or a desktop orientation.
Front panel components
Drive configuration may vary by model.
1 Slim optical disc drive (optional) 5 USB 2.0 Port (black)
2 USB 2.0 Port (black) 6 Hard Drive Activity Light
3 Microphone Connector 7 Dual-State Power Button
4 Headphone Connector
NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the
computer and it is displaying a diagnostic code. Refer to the Maintenance and Service Guide to interpret the code.
Standard configuration features 1
Rear panel components
1 Power Cord Connector 8 DVI-D Monitor Connector (white)
2
3
4 PCI x16 Expansion Card Slot Cover 11 USB 3.0 Ports (blue)
5 PCI Expansion Slot Covers 12 Microphone Connector (pink)
6
7
NOTE: An optional second serial port and an optional parallel port are available from HP.
When a graphics card is installed in one of the system board slots, the video connectors on the graphics card and the
integrated graphics on the system board may be used at the same time. However, for such a configuration, only the display
connected to the discrete graphics card will display POST messages.
The system board graphics can be disabled by changing settings in Computer Setup.
Serial Connector (green) 9 VGA Monitor Connector (blue)
RJ-45 Network Connector 10 USB 2.0 Ports (black)
PS/2 Mouse Connector (green) 13 Line-Out Connector for powered audio
PS/2 Keyboard Connector (purple) 14 Line-In Audio Connector (blue)
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.
devices (green)
2 Chapter 1 Product features
2 Activating and customizing the software
Activating and customizing the software in Windows 8
Additional information is available in online help after you activate the operating system.
NOTE: Be sure there is a 10.2 cm (4 inch) clearance at the back of the unit and above the monitor to permit
the required airflow.
Activating the Windows operating system
The first time you turn on the computer, the operating system is set up and activated automatically. This
process takes about 5 to 10 minutes. Carefully read and follow the instructions on the screen to complete the
activation.
We recommend that you register your computer with HP during operating system set up so you can receive
important software updates, facilitate support questions, and sign up for special offers. You can also register
your computer with HP using the Register with HP app on the Start screen.
CAUTION: After the activation process has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE PROCESS IS
COMPLETE. Turning off the computer during the activation process may damage the software that runs the
computer or prevent its proper installation.
Downloading Windows 8 updates
Microsoft may release updates to the operating system. To help keep the computer running optimally, HP
recommends checking for the latest updates during the initial installation and periodically throughout the life
of the computer.
Run Windows Update as soon as possible after you set up your computer.
1. Point to the upper-right or lower-right corner of the Start screen to display the charms.
2. Click Settings > Change PC Settings > Windows Update.
3. Run Windows Update monthly thereafter.
Customizing the monitor display
You can customize display settings for Windows 8 separately for the Start screen and the Desktop.
To customize the Start screen:
1. Point to the upper-right or lower-right corner of the Start screen to display the charms.
2. Click Settings > Change PC Settings.
3. Click Personalize to change the display settings.
To customize the Desktop:
1. Click the Desktop app on the Start screen.
2. Right-click on the desktop, and then click Personalize to change display settings.
Activating and customizing the software in Windows 8 3
3 Illustrated parts catalog
Major components
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to
follow the on-screen instructions.
http://partsurfer.hp.com, select your country or region, and then
4 Chapter 3 Illustrated parts catalog
Item Component
(1) Access panel
(2) System board (includes replacement thermal material):
For use in models without Windows 8
For use in models with Windows 8 Standard
For use in models with Windows 8 Professional
(3) Front bezel
(4) Fan sink
(5) Power supply, 250 W
Processors
Intel Core i5-4670 processor (3.4-GHz processor with 6-MB L3 cache)
Intel Core i5-4570 processor (3.2-GHz processor with 6-MB L3 cache)
Intel Core i3-4330 processor (3.5-GHz processor with 4-MB L3 cache)
Intel Core i3-4130 processor (3.4-GHz processor with 3-MB L3 cache)
Intel Pentium G3420 processor (3.2-GHz processor with 3-MB L3 cache)
Intel Pentium G3220 processor (3.0-GHz processor with 3-MB L3 cache)
Intel Celeron G1820 processor (2.7-GHz processor with 2-MB L3 cache)
Memory module (PC3-12800, 1666-MHz, DDR3):
8-GB
4-GB
Miscellaneous parts
Component
Cable, DMS-59 to dual DVI
Cable, DMS-59 to dual VGA
HP ultraslim keyed cable lock
Mouse, USB
Optical, USB, green
Optical, USB, scroll
Keyboards
PS/2, for use in Brazil
USB, for use in Brazil
Miscellaneous parts 5
Mass storage devices
Item
Hard drives
1-TB, 7200 rpm, 3.5 inch
500-GB, 7200 rpm, 3.5 inch
Optical drive
DVD±RW drive
DVD±RW drive
6 Chapter 3 Illustrated parts catalog
4 Serial ATA (SATA) drive guidelines and
routine care and disassembly preparation
This chapter provides general service information for the computer. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. You must disconnect the power cord from the power source before opening the computer to prevent
system board or component damage.
NOTE: HP only supports the use of SATA hard drives on these models of computer. No Parallel ATA (PATA)
drives are supported.
SATA hard drives
Serial ATA Hard Drive Characteristics
Number of pins/conductors in data cable 7/7
Number of pins in power cable 15
Maximum data cable length 39.37 in (100 cm)
Data interface voltage differential 400-700 mV
Drive voltages 3.3 V, 5 V, 12 V
Jumpers for configuring drive N/A
Data transfer rate 6.0 Gb/s
SATA hard drive cables
SATA data cable
Always use an HP approved SATA 3.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s
drives.
Current HP desktop products ship with SATA 3.0 Gb/s hard drives.
SATA data cables are susceptible to damage if overflexed. 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.
SATA hard drives 7
SMART ATA drives
The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers
have built-in drive failure prediction that warns the user or network administrator of an impending failure or
crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as
reallocated sector count, spin retry count, and calibration retry count. If the drive determines that a failure is
imminent, it generates a fault alert.
Electrostatic discharge information
A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device
exposed to electrostatic discharge (ESD) may not appear to be affected at all and can work perfectly
throughout a normal cycle. The device may function normally for a while, but it has been degraded in the
internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge
contains enough power to alter device parameters or melt silicon junctions.
Generating static
The following table shows that:
●
Different activities generate different amounts of static electricity.
●
Static electricity increases as humidity decreases.
Relative Humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl floor
Motions of bench worker
Removing DIPs* from plastic tube
Removing DIPs* from vinyl tray
Removing DIPs* from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
*These are then multi-packaged inside plastic tubes, trays, or Styrofoam.
NOTE: 700 volts can degrade a product.
Preventing electrostatic damage to equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of
sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric
components and accessories.
7,500 V
3,000 V
400 V
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
8 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation
●
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 the following equipment to prevent static electricity damage to equipment:
●
Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords.
To provide proper ground, a strap must be worn snug against bare skin. The ground cord must be
connected and fit snugly into the banana plug connector on the grounding mat or workstation.
●
Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with
most types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with
a maximum of one-megohm ± 10% resistance between the operator and ground.
Static Shielding Protection Levels
Method Voltage
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
Grounding the work area
To prevent static damage at the work area, use the following precautions:
●
Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the
work surface and properly grounded tools and equipment.
●
Use static-dissipative mats, foot straps, or air ionizers to give added protection.
●
Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle
them only at static-free work areas.
●
Turn off power and input signals before inserting and removing connectors or test equipment.
●
Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.
●
Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.
●
Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
1,500
7,500
15,000
Electrostatic discharge information 9
Recommended materials and equipment
Materials and equipment that are recommended for use in preventing static electricity include:
●
Antistatic tape
●
Antistatic smocks, aprons, or sleeve protectors
●
Conductive bins and other assembly or soldering aids
●
Conductive foam
●
Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance
●
Static-dissipative table or floor mats with hard tie to ground
●
Field service kits
●
Static awareness labels
●
Wrist straps and footwear straps providing one-megohm +/- 10% resistance
●
Material handling packages
●
Conductive plastic bags
●
Conductive plastic tubes
●
Conductive tote boxes
●
Opaque shielding bags
●
Transparent metallized shielding bags
●
Transparent shielding tubes
Operating guidelines
To prevent overheating and to help prolong the life of the computer:
●
Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.
●
Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides
of the computer and above the monitor to permit the required airflow.
●
Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the
keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also
restricts airflow.
●
Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign matter
can block the vents and limit the airflow. Be sure to unplug the computer before cleaning the air vents.
●
Never operate the computer with the cover removed.
●
Do not place computers so near each other that they are subject to each other’s re-circulated or
preheated air.
●
Keep liquids away from the computer and keyboard.
●
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.
10 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation
Routine care
General cleaning safety precautions
1. Never use solvents or flammable solutions to clean the computer.
2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use
the cloth on the component.
3. Always unplug the computer when cleaning with liquids or damp cloths.
4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5. Disconnect the keyboard before cleaning it.
6. Wear safety glasses equipped with side shields when cleaning the keyboard.
Cleaning the computer case
Follow all safety precautions in General cleaning safety precautions on page 11 before cleaning the
computer.
To clean the computer case, follow the procedures described below:
●
To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
●
For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a cloth
or swab dampened with clear water.
●
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will evaporate
quickly and not leave a residue.
●
After cleaning, always wipe the unit with a clean, lint-free cloth.
●
Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents and
limit the airflow.
Cleaning the keyboard
Follow all safety precautions in General cleaning safety precautions on page 11 before cleaning the
keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in
computer case on page 11.
When cleaning debris from under the keys, review all rules in
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.
Cleaning the
General cleaning safety precautions on page 11
Routine care 11
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
●
Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed out. Be
careful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove any
fibers or dirt in confined areas. Allow the parts to air dry before reassembly.
Cleaning the display
●
Wipe the display screen with a clean cloth moistened with water or with a towelette designed for
cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into the
housing and damage a component. Never use solvents or flammable liquids on the monitor.
●
To clean the monitor body follow the procedures in
Cleaning the mouse
Before cleaning the mouse, ensure that the power to the computer is turned off.
●
Clean the mouse ball by first 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
Service considerations
Listed below are some of the considerations that you should keep in mind during the disassembly and
assembly of the computer.
Tools and software requirements
To service the computer, you need the following:
●
Torx T-15 screwdriver
●
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
●
Phillips #2 screwdriver
●
Diagnostics software
Cleaning the computer case on page 11.
Cleaning the computer case on page 11.
●
HP tamper-resistant T-15 wrench or HP tamper-resistant bits
Screws
The screws used in the computer are not interchangeable. They may have standard or metric threads and
may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the
unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was
removed, then returned to their proper locations.
CAUTION: As each subassembly is removed from the computer, it should be placed away from the work
area to prevent damage.
12 Chapter 4 Serial ATA (SATA) drive guidelines and routine care and disassembly preparation
Cables and connectors
Most cables used throughout the unit are flat, flexible cables. These cables must be handled with care to
avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from
the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the
cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts
being removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the
reassembly process. Improper cable placement can damage the computer.
Hard drives
Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies
to failed drives as well as replacement spares.
●
If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging
and label the package “Fragile: Handle With Care.”
●
Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective
packaging until they are actually mounted in the CPU.
●
Avoid dropping drives from any height onto any surface.
●
If you are inserting or removing a hard drive, turn off the computer. Do not remove a hard drive while
the computer is on or in standby mode.
●
Before handling a drive, ensure that you are discharged of static electricity. While handling a drive,
avoid touching the connector. For more information about preventing electrostatic damage, refer to
Electrostatic discharge information on page 8
●
Do not use excessive force when inserting a drive.
●
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields
such as monitors or speakers.
Lithium coin cell battery
The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime
of about three years.
See the appropriate removal and replacement chapter for the chassis you are working on in this guide for
instructions on the replacement procedures.
WARNING! This computer contains a lithium battery. There is a risk of fire and chemical burn if the battery
is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or fire,
or expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.
NOTE: Batteries, battery packs, and accumulators should not be disposed of together with the general
household waste. In order to forward them to recycling or proper disposal, please use the public collection
system or return them to HP, their authorized partners, or their agents.
Service considerations 13
5 Removal and replacement procedures
The following sections provide information about disassembling various components of the computer.
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to
follow the on-screen instructions.
Preparing to disassemble the computer
To avoid injury and equipment damage, always complete the following steps in order, when opening the HP
Pro All-in-One.
1. Remove all media from the computer.
2. Shut down the computer.
3. After the system has completely shut down, disconnect the power cord from the back of the computer.
4. Disconnect all other attached cables from the back of the computer.
WARNING! Beware of sharp edges inside the chassis.
http://partsurfer.hp.com, select your country or region, and then
14 Chapter 5 Removal and replacement procedures
Access panel
The computer has one main access panel that allows access to internal components. It is secured with two
thumbscrews.
To remove the access panel:
1. Prepare the computer for disassembly (see
2. Unscrew the two screws on the rear of the computer.
3. Slide the panel back (1) and lift if off the computer (2).
Preparing to disassemble the computer on page 14).
To replace the access panel, reverse the removal procedures.
Access panel 15
Installing and removing drives
Description
1-TB, 7200 rpm, 3.5 inch hard drive
500-GB, 7200 rpm, 3.5 inch hard drive
Hard drive screw bumper
When installing drives, follow these guidelines:
●
The Serial ATA (SATA) hard drive must be connected to the SATA connector on the system board labeled
SATA1.
●
Connect an optical disc drive to the SATA connector on the system board labeled SATA2.
●
The power cable for the drives is a dual-headed cable coming from the power supply. The first
connector is routed to the hard drive and the second connector is routed to the slim optical disc drive.
CAUTION: To prevent loss of work and damage to the computer or drive:
If you are inserting or removing a drive, shut down the operating system properly, turn off the computer, and
unplug the power cord. Do not remove a drive while the computer is on or in standby mode.
Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid
touching the connector.
Handle a drive carefully; do not drop it.
Do not use excessive force when inserting a drive.
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as
monitors or speakers.
If a drive must be mailed, place the drive in a bubble-pack mailer or other protective packaging and label the
package “Fragile: Handle With Care.”
Removing a slim optical disc drive
CAUTION: All removable media should be taken out of a drive before removing the drive from the
computer.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 14).
2. Remove the access panel (see
Access panel on page 15).
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3. Disconnect the power cable and data cable from the rear of the optical disc drive.
CAUTION: When removing the cables, pull the tab or connector instead of the cable itself to avoid
damaging the cable.
4. Unfasten the screw securing the optical disc drive cage to the chassis.
Retain the screw.
5. Press the both sides optical disk drive latch to release the optical disc drive cage and slide the cage
away from the edge of the chassis.
6. Lift the optical disc drive cage out of the chassis.
Installing and removing drives 17
7. Open the latch on the side of the optical disc drive cage.
8. Push the optical disc drive out through the front of the cage.
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Installing a slim optical disc drive
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 14).
2. Remove the access panel (see
3. Be sure both the optical disc drive and the cage are right side up and slide the rear of the optical disc
drive into through the front of the drive cage.
4. When the optical disc drive is positioned correctly, close the latch on the side of the drive cage.
IMPORTANT: Be sure the latch has engaged properly by moving or attempting to move the optical
disc drive in the drive cage. If the optical disc drive can be moved, do not open the bracket. Instead, slide
the optical disc drive within the cage until you hear the click of the bracket engaging and you can no
longer move the optical disc drive. When the optical disc drive cannot be moved, the latch has engaged
properly.
Access panel on page 15).
5. Align the optical disc drive above the hard drive with the disc tray opening toward the front of the
chassis. Lower the optical disc drive onto the hard drive and next to the power supply.
Installing and removing drives 19
6. Align the latch on the front edge of the optical disc drive cage with the slots on the front edge of the
chassis. Hold both sides of the latch down and slide the drive cage forward until the latch engages.
7. Fasten the screw to secure the optical disc drive cage to the chassis.
8. Connect the power and data cables to the rear of the optical disc drive.
20 Chapter 5 Removal and replacement procedures
9. Connect the opposite end of the data cable to the SATA2 connector on the system board.
10. Replace the computer access panel.
11. Reconnect the power cord and any external devices, then turn on the computer.
12. Lock any security devices that were disengaged when the access panel was removed.
Removing and replacing a 3.5-inch hard drive
NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so that
you can transfer the data to the new hard drive.
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 14).
2. Remove the access panel (see
3. Remove the slim optical disc drive (see
4. Disconnect the power cable and data cable from the back of the hard drive.
Access panel on page 15).
Removing a slim optical disc drive on page 16).
Installing and removing drives 21
5. Press the tab to disengage the latch securing the hard drive in place.
6. Slide the hard drive away from the edge of the chassis to disengage the hard drive cage, and then lift it
out of the chassis.
7. Open the latch on the side of the hard drive cage.
8. Remove the two screws from the side of the hard drive cage, and then slide the hard drive out of the
cage.
Retain the screws to use on the new hard drive.
22 Chapter 5 Removal and replacement procedures
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