HP 406 G2 Maintenance and Service Guide
Maintenance and Service Guide
HP 406 Microtower Business PC
© Copyright 2016 HP Development Company,
L.P. The information contained herein is subject
to change without notice.
Intel, Core, Pentium, and Celeron are
trademarks of Intel Corporation in the U.S. and
other countries. Bluetooth is a trademark
owned by its proprietor and used by HP under
license. Windows is a U.S. registered
trademarks of the Microsoft group of
companies. SD Logo is a trademark of its
proprietor.
The following applies to HP systems with Intel
Skylake or next-generation silicon chip-based
system shipping with Windows 7 or Windows
10 Pro systems downgraded to Windows 7
Professional, Windows 8 Pro, or Windows 8.1:
This version of Windows running with the
processor or chipsets used in this system has
limited support from Microsoft. For more
information about Microsoft’s support, please
see Microsoft’s Support Lifecycle FAQ at
https://support.microsoft.com/lifecycle
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.
Product notice
This user guide describes features that are
common to most models. Some features may
not be available on your computer.
Not all features are available in all editions of
Windows. This computer may require upgraded
and/or separately purchased hardware, drivers
and/or software to take full advantage of
Windows functionality. Go to
http://www.microsoft.com for details.
Software terms
By installing, copying, downloading, or
otherwise using any software product
preinstalled on this computer, you agree to be
bound by the terms of the HP End User License
Agreement (EULA). If you do not accept these
license terms, your sole remedy is to return the
entire unused product (hardware and software)
within 14 days for a full refund subject to the
refund policy of your seller.
For any further information or to request a full
refund of the price of the computer, please
contact your seller.
First Edition: September 2016
Document Part Number: 900989-001
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, 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 the International Standard for Safety of Information Technology
Equipment (IEC 60950-1).
iii
iv Safety warning notice
Table of contents
1 Product features ........................................................................................................................................... 1
Front panel components ........................................................................................................................................ 1
Rear panel components ......................................................................................................................................... 2
Serial number location .......................................................................................................................................... 3
2 Illustrated parts catalog ................................................................................................................................ 4
Microtower (MT) chassis spare parts ..................................................................................................................... 4
Computer major components ............................................................................................................. 4
Drives ................................................................................................................................................... 5
Misc parts ............................................................................................................................................. 6
3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................... 7
Electrostatic discharge information ...................................................................................................................... 7
Generating static ................................................................................................................................. 7
Preventing electrostatic damage to equipment ................................................................................. 8
Personal grounding methods and equipment .................................................................................... 8
Grounding the work area ..................................................................................................................... 8
Recommended materials and equipment ........................................................................................... 9
Operating guidelines .............................................................................................................................................. 9
Routine care ......................................................................................................................................................... 10
General cleaning safety precautions ................................................................................................ 10
Cleaning the computer case .............................................................................................................. 10
Cleaning the keyboard ....................................................................................................................... 10
Cleaning the monitor ......................................................................................................................... 11
Cleaning the mouse ........................................................................................................................... 11
Service considerations ......................................................................................................................................... 11
Tools and software requirements ..................................................................................................... 11
Screws ............................................................................................................................................... 11
Cables and connectors ...................................................................................................................... 12
Hard Drives ........................................................................................................................................ 12
Lithium coin cell battery .................................................................................................................... 12
SATA hard drives .................................................................................................................................................. 13
SMART ATA drives ................................................................................................................................................ 13
4 Removal and replacement procedures – Microtower (MT) chassis .................................................................... 14
Preparation for disassembly ............................................................................................................................... 14
v
Access panel ......................................................................................................................................................... 15
Front bezel ........................................................................................................................................................... 16
Front bezel security ............................................................................................................................................. 17
Slim optical drive bezel blank .............................................................................................................................. 18
Memory ................................................................................................................................................................ 19
DIMMs ................................................................................................................................................ 19
DDR4-SDRAM DIMMs ......................................................................................................................... 19
Populating DIMM sockets .................................................................................................................. 19
Installing DIMMs ................................................................................................................................ 20
Expansion cards ................................................................................................................................................... 22
Drives ................................................................................................................................................................... 25
Drive positions ................................................................................................................................... 26
Removing a 9.5 mm slim optical drive .............................................................................................. 27
Installing a 9.5 mm slim optical drive ............................................................................................... 28
Removing a hard drive ...................................................................................................................... 30
Installing a hard drive ........................................................................................................................ 31
Front I/O and power switch assembly ................................................................................................................. 34
Fan sink ................................................................................................................................................................ 35
Processor ............................................................................................................................................................. 37
Speaker ................................................................................................................................................................ 38
Rear chassis fan ................................................................................................................................................... 39
Power supply ....................................................................................................................................................... 40
System board ....................................................................................................................................................... 42
System board callouts ....................................................................................................................... 43
5 Computer Setup (F10) Utility ........................................................................................................................ 44
Computer Setup (F10) Utilities ............................................................................................................................ 44
Using Computer Setup (F10) Utilities ................................................................................................ 44
Computer Setup–Main ....................................................................................................................... 46
Computer Setup—Security ............................................................................................................... 48
Computer Setup—Advanced ............................................................................................................. 50
Recovering the Conguration Settings ............................................................................................................... 55
6 Troubleshooting without diagnostics ............................................................................................................ 56
Safety and comfort .............................................................................................................................................. 56
Before you call for technical support .................................................................................................................. 56
Helpful hints ........................................................................................................................................................ 57
Solving general problems .................................................................................................................................... 58
Solving power problems ...................................................................................................................................... 62
Solving hard drive problems ................................................................................................................................ 63
Solving media card reader problems ................................................................................................................... 65
vi
Solving display problems .................................................................................................................................... 66
Solving audio problems ....................................................................................................................................... 70
Solving printer problems ..................................................................................................................................... 72
Solving keyboard and mouse problems .............................................................................................................. 73
Solving Hardware Installation Problems ............................................................................................................. 74
Solving Network Problems .................................................................................................................................. 76
Solving memory problems .................................................................................................................................. 79
Solving CD-ROM and DVD problems .................................................................................................................... 80
Solving USB ash drive problems ........................................................................................................................ 82
Solving front panel component problems .......................................................................................................... 83
Solving Internet access problems ....................................................................................................................... 83
Solving software problems .................................................................................................................................. 85
7 POST error messages and diagnostic front panel LEDs and audible codes ......................................................... 86
POST numeric codes and text messages ............................................................................................................. 86
Interpreting system validation diagnostic front panel LEDs and audible codes ................................................ 91
8 Password security and resetting CMOS .......................................................................................................... 93
Resetting CMOS and/or the password jumper .................................................................................................... 94
Changing a Setup or Power-On password ........................................................................................................... 95
Deleting a Setup or Power-On password ............................................................................................................ 95
9 HP PC Hardware Diagnostics ......................................................................................................................... 96
Why run HP PC Hardware Diagnostics ................................................................................................................. 96
How to access and run HP PC Hardware Diagnostics .......................................................................................... 96
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 96
10 System backup and recovery ...................................................................................................................... 98
Backing up, restoring, and recovering in Windows 10 ........................................................................................ 98
Creating recovery media and backups .............................................................................................. 98
Creating HP Recovery media (select products only) ...................................................... 98
Using Windows tools ......................................................................................................................... 99
Restore and recovery ........................................................................................................................ 99
Recovering using HP Recovery Manager ...................................................................... 100
What you need to know before you get started ........................................ 100
Using the HP Recovery partition (select products only) ............................ 101
Using HP Recovery media to recover ......................................................... 101
Changing the computer boot order ............................................................ 101
Removing the HP Recovery partition (select products only) ..................... 101
Backing up, restoring, and recovering in Windows 7 ........................................................................................ 102
vii
Creating recovery media ................................................................................................................. 102
Creating recovery media using HP Recovery Manager (select models only) ............... 103
Creating recovery discs with HP Recovery Disc Creator (select models only) ............. 104
Creating recovery discs .............................................................................. 104
Backing up your information ........................................................................................ 104
System Restore ............................................................................................................................... 105
System Recovery ............................................................................................................................. 105
System Recovery when Windows is responding .......................................................... 106
System Recovery when Windows is not responding .................................................... 106
System Recovery using recovery media (select models only) ..................................... 107
Using HP Recovery Disc operating system discs (select models only) ........................ 107
Appendix A Battery replacement ................................................................................................................... 109
Appendix B Power Cord Set Requirements ...................................................................................................... 112
General Requirements ....................................................................................................................................... 112
Japanese Power Cord Requirements ................................................................................................................. 112
Country-Specic Requirements ........................................................................................................................ 113
Appendix C Statement of Volatility ................................................................................................................ 114
Appendix D Specications ............................................................................................................................. 115
Index ........................................................................................................................................................... 116
viii
1 Product features
Front panel components
Drive conguration may vary by model. Some models have a bezel blank covering the optical drive bay.
Item Component Item Component
1 Slim optical drive (optional) 5 Microphone connector
2 Dual-state power button 6 Headphone connector
3 Hard drive activity light 7 SD card reader (optional)
4 USB 2.0 ports (2)
NOTE: The Power On Light 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.
Front panel components 1
Rear panel components
Item Component Item Component
1 USB 2.0 ports (black) 8 Line-in audio connector (blue)
2 RJ-45 network connector 9 PS/2 mouse connector (green)
3 PS/2 keyboard connector (purple) 10 Security cable slot
4 DVI-D port 11 USB 3.0 ports (blue)
5 VGA monitor connector 12 Power cord connector
6 Microphone connector 13 Power supply activity light
7 Line-out connector for powered audio devices
(
green)
NOTE: When a device is plugged into the blue Line-In Audio Connector, a dialog box will pop up asking if you want to use the connector for a
line-in de
taskbar.
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 sys
The system board graphics can be disabled by changing settings in Computer Setup.
vice or a microphone. You can recongure the connector at any time by double-clicking the Audio Manager icon in the Windows
tem board may be used. The specic graphics card installed and software conguration will determine the behavior.
2 Chapter 1 Product features
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.
Serial number location 3
2 Illustrated parts catalog
Microtower (MT) chassis spare parts
Computer major components
Item Description
(1) Access panel
(2) Front bezel
(3) Power supply
300W, APFC
300W, Energy Star
300W, Energy Star 6.0, bronze
4 Chapter 2 Illustrated parts catalog
Item Description
(4) System board (includes replacement thermal material)
(5) Fan sink (includes replacement thermal material)
x
Memory modules (PC4-17000)
8-GB
4-GB
x
Processors
(include replacement thermal material)
Intel Core i7 6700 (3.4-GHz, 8-MB L3 cache), 65W
Intel Core i5 6500 (3.2-GHz, 6-MB L3 cache), 65W
Intel Core i3 6320 (3.9-GHz, 4-MB L3 cache), 65W
Intel Core i3 6100 (3.7-GHz, 3-MB L3 cache), 65W
Intel Pentium G4520 (3.6-GHz, 3-MB L3 cache), 65W
Intel Pentium G4400 (3.3-GHz, 3-MB L3 cache), 65W
Intel Celeron G3900 (2.8-GHz, 2-MB L3 cache), 65W
x
not illustrated
Drives
Description
Hard drives
2-TB
1-TB
500-GB
Optical drives
DVD±RW drive
DVD-ROM drive
Grommet
, hard drive isolation, blue
Microtower (MT) chassis spare parts 5
Misc parts
Item Description
(1) Fan
(2) Front I/O assembly
(3) Speaker
(4) SATA data cable, 10 inch, 1 straight end, 1 angled end
(5) SATA data cable, 11 inch, 1 straight end, 1 angled end
(6) Secure Digital (SD) card reader
x
x
x
x
x
Power cord, 2 meter
Slim optical drive bezel blank
Hard drive conversion bracket, 2.5-inch to 3.5-inch
Grommet, hard drive isolation, blue
Mouse
PS2, optical
HP USB
x
Keyboards
PS/2
PS/2, slim
USB
USB, slim
x
not illustrated
6 Chapter 2 Illustrated parts catalog
3 Routine care, SATA drive guidelines, and
disassembly preparation
This chapter provides general service information for the computer. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. You must disconnect the power cord from the power source before opening the computer to prevent
system board or component damage.
Electrostatic discharge information
A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device
exposed to electrostatic discharge (ESD) may not appear to be aected at all and can work perfectly
throughout a normal cycle. The device may function normally for a while, but it has been degraded in the
internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge
contains enough power to alter device parameters or melt silicon junctions.
Generating static
The following table shows how humidity aects the electrostatic voltage levels generated by dierent
activities. A product can be degraded by 700 volts.
●
Dierent activities generate dierent amounts of static electricity.
●
Static electricity increases as humidity decreases.
Relative Humidity
Event 55% 40% 10%
Walking across carpet
Walking across vinyl oor
Motions of bench worker
Removing DIPs from plastic tube
Removing DIPs from vinyl tray
Removing DIPs from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
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
Electrostatic discharge information 7
Preventing electrostatic damage to equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of
sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric
components and accessories.
●
To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
●
Protect all electrostatic-sensitive 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 containers.
●
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 exible straps with a maximum of one-megohm ± 10% resistance in the ground cords.
To provide proper ground, a strap must be worn snugly against bare skin. The ground cord must be
connected to the banana plug connector on the grounding mat or workstation and t snugly into it.
●
Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with
most types of shoes or boots. On conductive oors or dissipative oor mats, use them on both feet with
a maximum of one-megohm ± 10% resistance between the operator and ground.
Static Shielding Protection Levels
Method Voltage
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
Grounding the work area
To prevent static damage at the work area, observe the following precautions:
●
Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the
work surface and use 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.
1,500
7,500
15,000
●
Use xtures made of static-safe materials when xtures must directly contact dissipative surfaces.
●
Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.
●
Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.
8 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
Recommended materials and equipment
The following grounding equipment is recommended to prevent electrostatic damage:
●
Antistatic tape
●
Antistatic smocks, aprons, or sleeve protectors
●
Conductive bins and other assembly or soldering aids
●
Conductive foam
●
Conductive tabletop workstations with ground cords of one-megohm +/- 10% resistance
●
Static-dissipative table or oor mats with hard ties 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 airow.
●
Never restrict the airow into the computer by blocking any vents or air intakes. Do not place the
keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also
restricts airow.
●
Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign matter
can block the vents and limit the airow. Be sure to unplug the computer before cleaning the air vents.
●
Never operate the computer with the cover or side panel removed.
●
Do not stack computers on top of each other or place computers so near each other that they are subject
to each other’s re-circulated or preheated air.
●
If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be
provided on the enclosure, and the same operating guidelines listed above will still apply.
●
Keep liquids away from the computer and keyboard.
Operating guidelines 9
●
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 10 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 the surface
with a cloth or swab dampened with clear water.
●
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed; alcohol will evaporate quickly
without leaving a residue.
●
After cleaning, always wipe the unit with a clean, lint-free cloth.
●
Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents and
limit the airow.
Cleaning the keyboard
Follow all safety precautions in General cleaning safety precautions on page 10 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 10.
When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 10
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.
10 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
●
If you want to remove a key, use a specially designed key puller to prevent damage to the keys. This tool
is available through many electronics supply outlets.
CAUTION: Never remove a wide, level 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 then 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 towelette designed for cleaning monitors or with a clean cloth
moistened with water. 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 10.
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 10.
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
Screws
The screws used in the computer are not interchangeable. They may have standard or metric threads and may
be of dierent lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP
strongly recommends that all screws removed during disassembly be kept with the part that was removed,
then returned to their proper locations.
CAUTION: Metric screws have a black nish. U.S. screws have a silver nish and are used on hard drives only.
CAUTION: As each subassembly is removed from the computer, it should be placed away from the work area
to prevent damage.
Service considerations 11
Cables and connectors
Most cables used throughout the unit are at, exible cables. These cables must be handled with care to
avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from
the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the
cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts
being removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the
reassembly process. Improper cable placement can damage the computer.
Hard Drives
Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies
to failed drives as well as replacement spares.
●
If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging
and label the package “Fragile: Handle With Care.”
●
Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective
packaging until they are actually mounted in the computer.
●
Avoid dropping drives from any height onto any surface.
●
If you are inserting or removing a hard drive, turn o the computer. Do not remove a hard drive while the
computer is on or in standby mode.
●
Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid
touching the connector.
●
Do not use excessive force when inserting a drive.
●
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds
such as monitors or speakers.
Lithium coin cell battery
The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime
of about three years.
See the appropriate removal and replacement chapter for the chassis you are working on in this guide for
instructions on the replacement procedures.
WARNING! This computer contains a lithium battery. There is a risk of re and chemical burn if the battery is
handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or re, or
expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.
NOTE: Batteries, battery packs, and accumulators should not be disposed of together with general
household waste. In order to forward them for recycling or proper disposal, please use the public collection
system or return them to HP.
12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
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 dierential 400-700 mV
Drive voltages 3.3 V, 5 V, 12 V
Jumpers for conguring drive N/A
Data transfer rate 6.0 Gb/s
SMART ATA drives
The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for HP personal computers have
built-in drive failure prediction that warns the user or network administrator of an impending failure (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 drives 13
4 Removal and replacement procedures –
Microtower (MT) chassis
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 7 for initial safety procedures.
1. Remove/disengage any security devices that prohibit opening the computer.
2. Close any open software applications.
3. Exit the operating system.
4. Remove any compact disc or media card from the computer.
5. Turn o the computer and any peripheral devices that are connected to it.
CAUTION: 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. The power cord should always be disconnected before servicing a
unit.
6. Disconnect the power cord from the electrical outlet and then from the computer.
7. As applicable, lay the computer down on its side to achieve a safe working position.
NOTE: During disassembly, label each cable as you remove it, noting its position and routing. Keep all
screws with the units removed.
CAUTION: The screws used in the computer are of dierent thread sizes and lengths; using the wrong screw
in an application may damage the unit.
14 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Access panel
To access internal components, you must remove the access panel:
1. Prepare the computer for disassembly (Preparation for disassembly on page 14)
2. Remove the two screws that secure the panel to the chassis (1), slide the panel back to disengage it (2)
and then lift it o the computer (3).
To replace the access panel, reverse the disassembly procedures.
Access panel 15
Front bezel
1. Prepare the computer for disassembly (Preparation for disassembly on page 14)
2. Remove the access panel (Access panel on page 15)
3. Lift up the three tabs on the side of the bezel (1), and then rotate the bezel o the chassis (2).
To replace the front bezel, reverse the disassembly procedures.
16 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Front bezel security
The front bezel can be secured in place by installing a screw through the front of the chassis into the front
bezel.
1. Prepare the computer for disassembly (Preparation for disassembly on page 14)
2. Remove the access panel (Access panel on page 15)
3. Install a 6-32 screw through the front of the chassis and into the screw hole located below the center
bezel release tab.
4. Replace the computer access panel.
5. Reconnect the power cord and any external devices, and then turn on the computer.
6. Lock any security devices that were disengaged when the access panel was removed.
Front bezel security 17
Slim optical drive bezel blank
On some models, there is a bezel blank covering the slim optical drive bay. Remove the bezel blank before
installing an optical drive. To remove the bezel blank:
1. Remove the access panel (Access panel on page 15)
2. Remove the front bezel (Front bezel on page 16)
3. To remove the bezel blank, press upward on the bottom tab and press downward on the top tab on the
side of the blank (1), and then rotate the blank o the front of the bezel (2).
18 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Memory
Description
8-GB, PC4-17000
4-GB, PC4-17000
The computer comes with double data rate 4 synchronous dynamic random access memory (DDR4-SDRAM)
dual inline memory modules (DIMMs).
DIMMs
The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These
memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory
support, you can populate the system board with up to 64 GB of memory congured in a high-performing
dual channel mode.
DDR4-SDRAM DIMMs
For proper system operation, the DIMMs must be:
●
industry-standard 288-pin
●
unbuered non-ECC PC4-17000 DDR4-2133 MHz-compliant
●
1.2 volt DDR4-SDRAM DIMMs
The DIMMs must also:
●
support CAS latency 15 DDR4 2133 MHz (15-15-15 timing)
●
contain the mandatory JEDEC SPD information
In addition, the computer supports:
●
512-Mbit, 1-Gbit, and 2-Gbit non-ECC memory technologies
●
single-sided and double-sided DIMMs
●
DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not supported
NOTE: The system will not operate properly if you install unsupported DIMMs.
Populating DIMM sockets
There are four DIMM sockets on the system board, with two sockets per channel. The sockets are labeled
DIMM1, DIMM2, DIMM3, and DIMM4. Sockets DIMM1 and DIMM2 operate in memory channel B. Sockets DIMM3
and DIMM4 operate in memory channel A.
The system will automatically operate in single channel mode, dual channel mode, or ex mode, depending
on how the DIMMs are installed.
NOTE: Single channel and unbalanced dual channel memory congurations will result in inferior graphics
performance.
Memory 19
●
The system will operate in single channel mode if the DIMM sockets are populated in one channel only.
●
The system will operate in a higher-performing dual channel mode if the total memory capacity of the
DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The technology and
device width can vary between the channels. For example, if Channel A is populated with two 1 GB
DIMMs and Channel B is populated with one 2 GB DIMM, the system will operate in dual channel mode.
●
The system will operate in ex mode if the total memory capacity of the DIMMs in Channel A is not equal
to the total memory capacity of the DIMMs in Channel B. In ex mode, the channel populated with the
least amount of memory describes the total amount of memory assigned to dual channel and the
remainder is assigned to single channel. For optimal speed, the channels should be balanced so that the
largest amount of memory is spread between the two channels. If one channel will have more memory
than the other, the larger amount should be assigned to Channel A. For example, if you are populating
the sockets with one 2 GB DIMM, and three 1 GB DIMMs, Channel A should be populated with the 2 GB
DIMM and one 1 GB DIMM, and Channel B should be populated with the other two 1 GB DIMMs. With this
conguration, 4 GB will run as dual channel and 1 GB will run as single channel.
●
In any mode, the maximum operational speed is determined by the slowest DIMM in the system.
Installing DIMMs
CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain
before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to
the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing
memory modules while voltage is present may cause irreparable damage to the memory modules or system
board.
The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important
to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from
having incompatible metals in contact with each other.
Static electricity can damage the electronic components of the computer or optional cards. Before beginning
these procedures, ensure that you are discharged of static electricity by briey touching a grounded metal
object.
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the
module.
1. Prepare the computer for disassembly (Preparation for disassembly on page 14)
2. Remove the access panel (Access panel on page 15)
20 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
3. Open both latches of the memory module socket (1), and insert the memory module into the socket (2).
NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab
on the memory socket.
Populate the black DIMM sockets rst.
For maximum performance, populate the sockets so that the memory capacity is spread as equally as
possible between Channel A and Channel B.
4. Push the module down into the socket, ensuring that the module is fully inserted and properly seated.
Make sure the latches are in the closed position (3).
5. Repeat steps 3 and 4 to install any additional modules.
6. Replace the computer access panel.
7. Reconnect the power cord and turn on the computer.
8. Lock any security devices that were disengaged when the access panel was removed.
The computer should automatically recognize the additional memory the next time you turn on the computer.
Memory 21
Expansion cards
The computer has one PCI Express x1 expansion socket and two PCI Express x16 expansion sockets.
NOTE: You can install a PCI Express x1, x8, or x16 expansion card in the PCI Express x16 socket.
For dual graphics card congurations, the rst (primary) card must be installed in the PCI Express x16 socket
that is NOT downshifted to a x4.
To remove, replace, or add an expansion card:
1. Prepare the computer for disassembly (Preparation for disassembly on page 14)
2. Remove the access panel (Access panel on page 15)
3. Release the slot cover retention latch that secures the slot covers by removing the Torx screw (1), sliding
the latch up (2), and pulling the latch away from the computer (3).
4. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot
on the back of the computer chassis.
5. Before installing an expansion card, remove the expansion slot cover or the existing expansion card.
NOTE: Before removing an installed expansion card, disconnect any cables that may be attached to
the expansion card.
a. If you are installing an expansion card in a vacant socket, you must slide one of the expansion slot
covers up and out of the chassis or use a atblade screwdriver to pry out one of the metal shields
on the rear panel that covers the expansion slot. Be sure to remove the appropriate shield for the
expansion card you are installing.
22 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
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