HP 100B Service and Maintain
Maintenance & Service Guide
HP 100B All-in-One PC
© Copyright 2011, 2012 Hewlett-Packard
Development Company, L.P. The
information contained herein is subject to
change without notice.
Microsoft and Windows are trademarks of
Microsoft Corporation in the U.S. and other
countries.
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 Hewlett-Packard Company.
Maintenance & Service Guide
HP Compaq 100B All-in-One PC
Second Edition (June 2012)
First Edition (January 2011)
Document Part Number: 640045-002
About This Book
WARNING! Text set off in this manner indicates that failure to follow directions could result in bodily
harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could result in
damage to equipment or loss of information.
NOTE: Text set off in this manner provides important supplemental information.
iii
iv About This Book
Table of contents
1 Installing and Customizing the Software ...................................................................................................... 1
Installing the Operating System ........................................................................................................... 1
Downloading Microsoft Windows Updates ........................................................................................... 1
Installing or Upgrading Device Drivers (Windows systems) ................................................................. 2
Accessing Disk Image (ISO) Files ........................................................................................................ 2
Protecting the Software ........................................................................................................................ 2
2 Computer Setup (F10) Utility ......................................................................................................................... 3
Computer Setup (F10) Utilities ............................................................................................................. 3
Using Computer Setup (F10) Utilities .................................................................................. 4
Computer Setup—File ......................................................................................................... 5
Computer Setup—Storage .................................................................................................. 6
Computer Setup—Security .................................................................................................. 7
Computer Setup—Power ................................................................................................... 10
Computer Setup—Advanced ............................................................................................. 10
3 Serial ATA (SATA) Drive Guidelines and Features .................................................................................... 12
SATA Hard Drives .............................................................................................................................. 12
SATA Hard Drive Cables .................................................................................................................... 12
SATA Data Cable .............................................................................................................. 12
SMART ATA Drives ............................................................................................................................ 13
Hard Drive Capacities ........................................................................................................................ 13
4 Identifying the Chassis, Routine Care, and Disassembly Preparation .................................................... 14
Chassis Designation ........................................................................................................................... 14
All-in One ........................................................................................................................... 14
Electrostatic Discharge Information .................................................................................................... 15
Generating Static ............................................................................................................... 15
Preventing Electrostatic Damage to Equipment ................................................................ 15
Personal Grounding Methods and Equipment ................................................................... 16
Grounding the Work Area .................................................................................................. 16
v
Recommended Materials and Equipment .......................................................................... 16
Operating Guidelines .......................................................................................................................... 17
Routine Care ...................................................................................................................................... 18
General Cleaning Safety Precautions ................................................................................ 18
Cleaning the Computer Case ............................................................................................ 18
Cleaning the Keyboard ...................................................................................................... 18
Cleaning the Monitor .......................................................................................................... 19
Cleaning the Mouse ........................................................................................................... 19
Service Considerations ...................................................................................................................... 19
Tools and Software Requirements .................................................................................... 19
Screws ............................................................................................................................... 19
Cables and Connectors ..................................................................................................... 20
Hard Drives ........................................................................................................................ 20
Lithium Coin Cell Battery ................................................................................................... 20
5 Illustrated parts catalog ............................................................................................................................... 21
Computer major components ............................................................................................................. 21
Mass storage devices ......................................................................................................................... 23
Sequential part number listing ............................................................................................................ 23
6 Removal and Replacement Procedures All-in One (AIO) Chassis ........................................................... 26
Preparing to Disassemble the Computer ........................................................................................... 26
Rear Cover ......................................................................................................................................... 27
Feet .................................................................................................................................................... 30
Stand .................................................................................................................................................. 31
Optical Drive ....................................................................................................................................... 33
Hard Drive .......................................................................................................................................... 35
Memory .............................................................................................................................................. 39
Fan ..................................................................................................................................................... 42
Speakers ............................................................................................................................................ 45
Webcam Module and Cable ............................................................................................................... 49
Hard Drive Cable ................................................................................................................................ 52
Optical Drive Cable ............................................................................................................................ 54
Optical Drive Bracket .......................................................................................................................... 56
Inverter Board ..................................................................................................................................... 57
Power Button Board and Cable .......................................................................................................... 60
System Board Shield .......................................................................................................................... 63
Heat Sink (Thermal Module) .............................................................................................................. 65
WLAN Module .................................................................................................................................... 66
System Board ..................................................................................................................................... 69
Front Bezel ......................................................................................................................................... 71
vi
Display Panel ..................................................................................................................................... 72
Appendix A POST Error Messages ................................................................................................................ 74
POST Numeric Codes and Text Messages ....................................................................................... 75
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes ................................................ 82
Appendix B Connector Pin Assignments ...................................................................................................... 85
Ethernet BNC ..................................................................................................................................... 85
USB .................................................................................................................................................... 85
Microphone ......................................................................................................................................... 85
Headphone ......................................................................................................................................... 86
Line-in Audio ...................................................................................................................................... 86
Line-out Audio .................................................................................................................................... 86
Appendix C Power Cord Set Requirements .................................................................................................. 87
General Requirements ....................................................................................................................... 87
Japanese Power Cord Requirements ................................................................................................ 87
Country-Specific Requirements .......................................................................................................... 88
Index ................................................................................................................................................................... 89
vii
viii
1 Installing and Customizing the
Software
If your computer was not shipped with a Microsoft operating system, some portions of this
documentation do not apply. Additional information is available in online help after you install the
operating system.
NOTE: If the computer was shipped with Windows Vista or Windows 7 loaded, you will be prompted
to register the computer with HP Total Care before installing the operating system. You will see a
brief movie followed by an online registration form. Fill out the form, click the Begin button, and follow
the instructions on the screen.
CAUTION: Do not add optional hardware or third-party devices to the computer until the operating
system is successfully installed. Doing so may cause errors and prevent the operating system from
installing properly.
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.
Installing the Operating System
The first time you turn on the computer, the operating system is installed automatically. This process
takes about 5 to 10 minutes, depending on which operating system is being installed. Carefully read
and follow the instructions on the screen to complete the installation.
CAUTION: Once the automatic installation has begun, DO NOT TURN OFF THE COMPUTER
UNTIL THE PROCESS IS COMPLETE. Turning off the computer during the installation process may
damage the software that runs the computer or prevent its proper installation.
NOTE: If the computer shipped with more than one operating system language on the hard drive,
the installation process could take up to 60 minutes.
If your computer was not shipped with a Microsoft operating system, some portions of this
documentation do not apply. Additional information is available in online help after you install the
operating system.
Downloading Microsoft Windows Updates
1. To set up your Internet connection, click Start > Internet Explorer and follow the instructions on
the screen.
2. Once an Internet connection has been established, click the Start button.
Installing the Operating System 1
3. Select the All Programs menu.
4. Click on the Windows Update link.
In Windows Vista and Windows 7, the Windows Update screen appears. Click view available
updates and make sure all critical updates are selected. Click the Install button and follow the
instructions on the screen.
In Windows XP, you will be directed to the Microsoft Windows Update Web site. If you see
one or more pop-up windows that ask you to install a program from
click Yes to install the program. Follow the instructions on the Microsoft Web site to scan for
updates and install critical updates and service packs.
It is recommended that you install all of the critical updates and service packs.
5. After the updates have been installed, Windows will prompt you to reboot the machine. Be sure
to save any files or documents that you may have open before rebooting. Then select Yes to
reboot the machine.
http://www.microsoft.com,
Installing or Upgrading Device Drivers (Windows systems)
When installing optional hardware devices after the operating system installation is complete, you
must also install the drivers for each of the devices.
If prompted for the i386 directory, replace the path specification with C:\i386, or use the Browse
button in the dialog box to locate the i386 folder. This action points the operating system to the
appropriate drivers.
Obtain the latest support software, including support software for the operating system from
http://www.hp.com/support. Select your country and language, select Download drivers and
software (and firmware), enter the model number of the computer, and press Enter.
Accessing Disk Image (ISO) Files
There are disk image files (ISO files) included on your PC that contain the installation software for
additional software. These CD image files are located in the folder C:\SWSetup\ISOs. Each .iso file
can be burned to CD media to create an installation CD. It is recommended that these disks be
created and the software installed in order to get the most from your PC. The software and image file
names are:
Corel WinDVD SD and BD – installation software for WinDVD – used to play DVD movies
●
● HP Insight Diagnostics OR Vision Diagnostics – software to perform diagnostic activities on your
PC
Protecting the Software
To protect the software from loss or damage, keep a backup copy of all system software,
applications, and related files stored on the hard drive. Refer to the operating system or backup utility
documentation for instructions on making backup copies of your data files.
2 Chapter 1 Installing and Customizing the Software
2 Computer Setup (F10) Utility
Computer Setup (F10) Utilities
Use Computer Setup (F10) Utility to do the following:
Change factory default settings.
●
Set the system date and time.
●
● Set, view, change, or verify the system configuration, including settings for processor, graphics,
memory, audio, storage, communications, and input devices.
Modify the boot order of bootable devices such as hard drives, optical drives, or USB flash
●
media devices.
Select Post Messages Enabled or Disabled to change the display status of Power-On Self-Test
●
(POST) messages. Post Messages Disabled suppresses most POST messages, such as
memory count, product name, and other non-error text messages. If a POST error occurs, the
error is displayed regardless of the mode selected. To manually switch to Post Messages
Enabled during POST, press any key (except F1 through F12).
Enable the power-on password prompt during system restarts (warm boots) as well as during
●
power-on.
Establish a setup password that controls access to the Computer Setup (F10) Utility and the
●
settings described in this section.
● Secure integrated I/O functionality, including USB, audio, or embedded NIC, so that they cannot
be used until they are unsecured.
● Enable or disable removable media boot ability.
● Solve system configuration errors detected but not automatically fixed during the Power-On Self-
Test (POST).
● Execute self-tests on a specified ATA hard drive (when supported by drive).
Computer Setup (F10) Utilities 3
Using Computer Setup (F10) Utilities
Computer Setup can be accessed only by turning the computer on or restarting the system.
To access the Computer Setup Utilities menu, complete the following steps:
1. Turn on or restart the computer. If you are in Microsoft Windows, click Start > Shut Down >
Restart.
2. As soon as the computer is turned on, press F10 before the computer boots to the operating
system to enter Computer Setup. Press Enter to bypass the title screen, if necessary.
NOTE: If you do not press F10 at the appropriate time, you must restart the computer and
again press F10 before the computer boots to the operating system to access the utility.
3. Select your language from the list and press Enter.
4. A choice of five headings appears in the Computer Setup Utilities menu: File, Storage, Security,
Power, and Advanced.
5. Use the arrow (left and right) keys to select the appropriate heading. Use the arrow (up and
down) keys to select the option you want, then press Enter. To return to the Computer Setup
Utilities menu, press Esc.
6. To apply and save changes, select File > Save Changes and Exit.
If you have made changes that you do not want applied, select Ignore Changes and Exit.
●
To reset to factory settings or previously saved default settings (some models), select
●
Apply Defaults and Exit. This option will restore the original factory system defaults.
CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the Computer Setup
(F10) changes because the CMOS could become corrupted. It is safe to turn off the computer only
after exiting the F10 Setup screen.
Table 2-1 Computer Setup (F10) Utility
Heading Table
File
Storage
Security
Power
Advanced
Table 2-2 Computer Setup—File on page 5
Table 2-3 Computer Setup—Storage on page 6
Table 2-4 Computer Setup—Security on page 7
Table 2-5 Computer Setup—Power on page 10
Table 2-6 Computer Setup—Advanced on page 10
4 Chapter 2 Computer Setup (F10) Utility
Computer Setup—File
NOTE: Support for specific Computer Setup options may vary depending on the hardware
configuration.
Table 2-2 Computer Setup—File
Option Description
System Information Lists:
About Displays copyright notice.
Set Time and Date Allows you to set system time and date.
Product name
●
SKU number (some models)
●
● Processor type/speed/stepping/cache size
● Installed memory size/speed, number of channels (single or dual) (if applicable)
Integrated MAC address for embedded, enabled NIC (if applicable)
●
System BIOS (includes family name and version)
●
● Chassis serial number
Apply Defaults and
Exit
Ignore Changes
and Exit
Save Changes and
Exit
Applies the currently selected default settings and clears any established passwords.
Exits Computer Setup without applying or saving any changes.
Saves changes to system configuration or default settings and exits Computer Setup.
Computer Setup (F10) Utilities 5
Computer Setup—Storage
NOTE: Support for specific Computer Setup options may vary depending on the hardware
configuration.
Table 2-3 Computer Setup—Storage
Option Description
Device Configuration Lists all installed BIOS-controlled storage devices.
When a device is selected, detailed information and options are displayed. The following options
may be presented:
Hard Disk: Size, model, firmware, serial number, connector color, SMART, emulation type.
Emulation type has the following choices:
None (prevents BIOS data accesses and disables it as a boot device)
●
● Hard Disk (treated as a hard disk)
CD-ROM: Model, firmware, serial number. No emulation options available.
Storage Options SATA Emulation
Allows you to choose how the SATA controller and devices are accessed by the operating
system. There are two supported options: AHCI and IDE.
AHCI (default option) - Allows operating systems with AHCI device drivers loaded to take
advantage of more advanced features of the SATA controller.
IDE - This is the most backwards-compatible setting of the two options. Operating systems usually
do not require additional driver support in IDE mode.
NOTE: The AHCI device driver must be installed prior to attempting to boot from an AHCI
volume. If you attempt to boot from an AHCI volume without the required device driver installed,
the system will crash (blue screen).
DPS Self-Test Allows you to execute self-tests on ATA hard drives capable of performing the Drive Protection
System (DPS) self-tests.
NOTE: This selection will only appear when at least one drive capable of performing the DPS
self-tests is attached to the system.
Boot Order Allows you to:
Specify the order in which attached devices (such as a USB flash media device, hard drive,
●
optical drive, or network interface card) are checked for a bootable operating system image.
Each device on the list may be individually excluded from or included for consideration as a
bootable operating system source.
● Specify the order of attached hard drives. The first hard drive in the order will have priority in
the boot sequence and will be recognized as drive C (if any devices are attached).
NOTE: MS-DOS drive lettering assignments may not apply after a non-MS-DOS operating
system has started.
Shortcut to Temporarily Override Boot Order
To boot one time from a device other than the default device specified in Boot Order, restart the
computer and press F9 before the computer boots to the operating system. After POST is
completed, a list of bootable devices is displayed. Use the arrow keys to select the preferred
bootable device and press Enter. The computer then boots from the selected non-default device
for this one time.
6 Chapter 2 Computer Setup (F10) Utility
Computer Setup—Security
NOTE: Support for specific Computer Setup options may vary depending on the hardware
configuration.
Table 2-4 Computer Setup—Security
Option Description
Setup Password Allows you to set and enable a setup (administrator) password.
NOTE: If the setup password is set, it is required to change Computer Setup options, flash the
ROM, and make changes to certain plug and play settings under Windows.
See the Desktop Management Guide for more information.
Power-On Password Allows you to set and enable a power-on password. The power-on password prompt appears
Device Security Allows you to set Device Available/Device Hidden for:
USB Security Allows you to enable or disable groups of USB ports or individual USB ports:
after a power cycle. If the user does not enter the correct power-on password, the unit will not
boot.
NOTE: This password does not appear on warm boots , such as Ctrl+Alt+Delete or Restart
from Windows, unless enabled in Password Options (see below).
See the Desktop Management Guide for more information.
● System audio
Network controllers (some models)
●
SATA0
●
● SATA1
● Front USB Ports
USB Port 11
◦
USB Port 13
◦
● Rear USB Ports
USB Port 0
◦
USB Port 1
◦
◦ USB Port 4
USB Port 9
◦
Accessory USB Ports
●
◦ USB Port 3
◦ USB Port 12
Slot Security Allows you to disable or enable the mini card slot
Network Service Boot Enables/disables the computer’s ability to boot from an operating system installed on a network
server.
Computer Setup (F10) Utilities 7
Table 2-4 Computer Setup—Security (continued)
System IDs Shows:
● Product name
● Chassis serial number or Universal Unique Identifier (UUID) number. The UUID can only be
updated if the current chassis serial number is invalid. (These ID numbers are normally set in
the factory and are used to uniquely identify the system.)
SKU number
●
Family name
●
Feature
●
Allows you to set:
Keyboard locale setting (for example, English or German) for System ID entry.
●
8 Chapter 2 Computer Setup (F10) Utility
Table 2-4 Computer Setup—Security (continued)
System Security
(some models: these
options are hardware
dependent)
Data Execution Prevention (some models) (enable/disable) - Helps prevent operating system
security breaches.
PAVP (Models with Blu-ray drives) (disabled/min/max) - PAVP enables the Protected Audio Video
Path in the Chipset. This may allow viewing of some protected high definition content that would
otherwise be prohibited from playback. Selecting Max will assign 96 Megabytes of system
memory exclusively to PAVP.
Virtualization Technology (some models) (enable/disable) - Controls the virtualization features of
the processor. Changing this setting requires turning the computer off and then back on.
Virtualization Technology Directed I/O (some models) (enable/disable) - Controls virtualization
DMA remapping features of the chipset. Changing this setting requires turning the computer off
and then back on.
Trusted Execution Technology (some models) (enable/disable) - Controls the underlying
processor and chipset features needed to support a virtual appliance. Changing this setting
requires turning the computer off and then back on. To enable this feature you must enable the
following features:
Embedded Security Device Support
●
Virtualization Technology
●
Virtualization Technology Directed I/O
●
Embedded Security Device Support (some models) (enable/disable) - Permits activation and
deactivation of the Embedded Security Device. Changing this setting requires turning the
computer off and then back on.
System Security
(continued)
NOTE: To configure the Embedded Security Device, a Setup password must be set.
● Reset to Factory Settings (some models) (Do not reset/Reset) - Resetting to factory defaults
will erase all security keys. Changing this setting requires turning the computer off and then
back on.
CAUTION: The embedded security device is a critical component of many security
schemes. Erasing the security keys will prevent access to data protected by the Embedded
Security Device. Choosing Reset to Factory Settings may result in significant data loss.
OS management of Embedded Security Device (some models) (enable/disable) - This option
allows the user to limit operating system control of the Embedded Security Device. Changing this
setting requires turning the computer off and then back on. This option allows the user to limit OS
control of the Embedded Security Device.
Reset of Embedded Security Device through OS (some models) (enable/disable) - This
●
option allows the user to limit the operating system ability to request a Reset to Factory
Settings of the Embedded Security Device. Changing this setting requires turning the
computer off and then back on.
NOTE: To enable this option, a Setup password must be set.
Button Retask Password Protection (disable/enable) - Controls whether or not the Setup
password must be provided to WMI methods used to re-task the function of the side panel
buttons.
Power Button (enable/disable) - Allows you to disable or enable the power button.
Consumer IR Power Button (enable/disable) - Controls whether or not the BIOS will respond to
Remote Control power button presses. This does not affect the Remote Control power button
operation in Windows.
Optical Drive Eject Button (enable/disable) - Allows you to disable or enable the optical drive eject
button. Disabling the eject button does not disable software control of the eject function inside
Windows.
Computer Setup (F10) Utilities 9
Computer Setup—Power
NOTE: Support for specific Computer Setup options may vary depending on the hardware
configuration.
Table 2-5 Computer Setup—Power
Option Description
Hardware Power
Management
Thermal Fan idle mode—Displays CPU fan speed.
SATA Power Management—Enables or disables the SATA bus and/or device power
management.
S5 Maximum Power Savings—Turns off power to all nonessential hardware when system is off to
meet EUP Lot 6 requirement of less than 1 Watt power usage. Enabling this feature will disable
any wake events and management devices while in S5.
Computer Setup—Advanced
NOTE: Support for specific Computer Setup options may vary depending on the hardware
configuration.
Table 2-6 Computer Setup—Advanced
Option Heading
Power-On Options Allows you to set:
● POST messages (enable/disable). Suppresses most POST messages, such as memory
count, product name, and other non-error text messages. If a POST error occurs, the error is
displayed regardless of the mode selected.
● After Power Loss (off/on/previous state): Setting this option to:
◦ Off—causes the computer to remain powered off when power is restored.
On—causes the computer to power on automatically as soon as power is restored.
◦
Previous state—causes the computer to power on automatically as soon as power is
◦
restored, if it was on when power was lost.
NOTE: If you turn off power to the computer using the switch on a power strip, you will not be
able to use the suspend/sleep feature or the Remote Management features.
● POST Delay (None, 5, 10 15, or 20 seconds). Enabling this feature will add a user-specified
delay to the POST process. This delay is sometimes needed for hard disks on some PCI
cards that spin up very slowly, so slowly that they are not ready to boot by the time POST is
finished. The POST delay also gives you more time to select F10 to enter Computer (F10)
Setup.
BIOS Power-On Allows you to set the computer to turn on automatically at a time you specify.
Bus Options On some models, allows you to enable or disable:
● PCI SERR# Generation.
PCI VGA Palette Snooping, which sets the VGA palette snooping bit in PCI configuration
●
space; only needed when more than one graphics controller is installed.
10 Chapter 2 Computer Setup (F10) Utility
Table 2-6 Computer Setup—Advanced (continued)
Device Options Allows you to set:
● Num Lock State at Power-On (off/on).
Internal Speaker (some models) (does not affect external speakers).
●
NIC Option ROM Download (PXE, Disable, iSCSI). The BIOS contains an embedded NIC
●
option ROM to allow the unit to boot through the network to a PXE server. This is typically
used to download a corporate image to a hard drive. The NIC option ROM takes up memory
space below 1MB commonly referred to as DOS Compatibility Hole (DCH) space. This
space is limited. This F10 option will allow users to disable the downloading of this
embedded NIC option ROM thus giving more DCH space for additional PCI cards which may
need option ROM space. The default will be to have the NIC PXE option-ROM-enabled.
Management Devices Only displayed in the Advanced Menu when the BIOS detects multiple management options. This
option is for installed NIC cards that support ASF or DASH. Use the Management Devices menu
to select if the BIOS management operations will be through the embedded solution or one of the
installed NIC cards.
Management
Operations
Allows you to set:
MEBx Setup Prompt (enable/disable)
●
Unprovision AMT on next boot
●
● SOL Terminal Emulation Mode
SOL Local Keyboard (enable/disable)
●
Computer Setup (F10) Utilities 11
3 Serial ATA (SATA) Drive Guidelines
and Features
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 3.0 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.
12 Chapter 3 Serial ATA (SATA) Drive Guidelines and Features
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.
Hard Drive Capacities
The combination of the file system and the operating system used in the computer determines the
maximum usable size of a drive partition. A drive partition is the largest segment of a drive that may
be properly accessed by the operating system. A single hard drive may therefore be subdivided into a
number of unique drive partitions in order to make use of all of its space.
Because of the differences in the way that drive sizes are calculated, the size reported by the
operating system may differ from that marked on the hard drive or listed in the computer specification.
Drive size calculations by drive manufacturers are bytes to the base 10 while calculations by
Microsoft are bytes to the base 2.
Maximum Size
File System Controller Type Operating System Partition Drive
Drive/Partition Capacity Limits
FAT 32 ATA Windows 7 32 GB 2 TB
NTFS ATA Windows 7 2 TB 2 TB
SMART ATA Drives 13
4 Identifying the Chassis, 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.
Chassis Designation
An all-in one form factor is available.
All-in One
14 Chapter 4 Identifying the Chassis, Routine Care, and Disassembly Preparation
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.
7,500 V
3,000 V
400 V
400 V
2,000 V
3,500 V
7,000 V
5,000 V
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.
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
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.
●
Electrostatic Discharge Information 15
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
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
●
16 Chapter 4 Identifying the Chassis, Routine Care, and Disassembly Preparation
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.
Operating Guidelines 17
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 18 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 18 before cleaning the
keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in
Computer Case on page 18.
When cleaning debris from under the keys, review all rules in
on page 18 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.
●
Cleaning the
General Cleaning Safety Precautions
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.
18 Chapter 4 Identifying the Chassis, Routine Care, and Disassembly Preparation
If you remove a key, use a specially designed key puller to prevent damage to the keys. This
●
tool is available through many electronic supply outlets.
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these
keys are improperly removed or installed, the keyboard may not function properly.
Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed
●
out. Be careful not to wipe away lubricants necessary for proper key functions. Use tweezers to
remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly.
Cleaning the Monitor
Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for
●
cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into
the housing and damage a component. Never use solvents or 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 (HP screwdriver with bits, PN 161946-001)
●
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
●
Phillips #2 screwdriver
●
Cleaning the Computer Case on page 18.
Cleaning the Computer Case on page 18.
Screws
Diagnostics software
●
● HP tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or HP tamper-
resistant bits (Smart Cover FailSafe Key, PN 166527-002)
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.
Service Considerations 19
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
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.
Electrostatic Discharge Information on page 15
Lithium Coin Cell Battery
The battery that comes with the computer provides power to the real-time clock and has a minimum
lifetime of about three years.
See the appropriate removal and replacement chapter for the chassis you are working on in this
guide for instructions on the replacement procedures.
WARNING! This computer contains a lithium battery. There is a risk of 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.
20 Chapter 4 Identifying the Chassis, Routine Care, and Disassembly Preparation
5 Illustrated parts catalog
Computer major components
Item Description Spare part number
(1) System board (includes dual-core AMD processor) 644692-001
(2) Inverter board
Computer major components 21
Item Description Spare part number
For use with LG displays 646797-001
For use with Samsung/CMI displays 646796-001
Inverter board cable 646788-001
(3) Power switch board assembly 649230-001
(4) WLAN module (802.11a/b/g/n) 634906-001
(5) Feet
Right foot 646784-001
Left foot 646785-001
(6) Optical drive bracket 646805-001
(7) Fan 646798-001
(8) Front bezel 646780-001
(9) Hard drive cable 646789-001
(10) Optical drive cable 646790-001
(11) Heat sink assembly (thermal module) (includes replacement thermal material) 646799-001
(12) Power button board cable 646782-001
(13) WLAN module antenna cable 646806-001
Webcam cable assembly (not illustrated) 646786-001
(14) Stand 646783-001
(15) Rear cover 646781-001
(16) Speakers
Right speaker 646792-001
Left speaker 646793-001
Display panel, 20-inch (not illustrated)
LG 646795-001
Samsung/CMI 646796-001
8X DVD±RW SuperMulti DL Drive with LightScribe without bezel (not illustrated) 619238-001
Optical drive bezel (not illustrated) 646804-001
Hard drive (not illustrated)
750-GB 632938-001
500-GB 621421-001
250-GB 621419-001
Hard drive grommets (rubber) 646791-001
Memory modules (PC3-10600, 1333-MHz; not illustrated)
4-GB 646801-001
22 Chapter 5 Illustrated parts catalog
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