Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company under license. Intel and Core are
U.S. registered trademarks of Intel
Corporation. Microsoft, Windows, and
Windows Vista are U.S. registered
trademarks of Microsoft Corporation. SD
Logo is a trademark of its proprietor.
The information contained herein is subject
to change without notice. The only
warranties for HP products and services are
set forth in the express warranty statements
accompanying such products and services.
Nothing herein should be construed as
constituting an additional warranty. HP shall
not be liable for technical or editorial errors
or omissions contained herein.
First Edition: September 2013
Document Part Number: 734761-001
Important Notice about Customer Self-Repair Parts
CAUTION:Your computer includes Customer Self-Repair parts and parts that should only be
accessed by an authorized service provider. See Chapter 5, "Removal and replacement procedures for
Customer Self-Repair parts," for details. Accessing parts described in Chapter 6, "Removal and
replacement procedures for Authorized Service Provider only parts," can damage the computer or void
your warranty.
iii
iv Important Notice about Customer Self-Repair Parts
Safety warning notice
WARNING!To reduce the possibility of heat-related injuries or of overheating the device, do not
place the device directly on your lap or obstruct the device air vents. Use the device only on a hard, flat
surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface,
such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the
skin or a soft surface, such as pillows or rugs or clothing, during operation. The device and the AC
adapter comply with the user-accessible surface temperature limits defined by the International
Standard for Safety of Information Technology Equipment (IEC 60950).
system and required with Windows 8 Professional
downgrade operating system)
Windows 7 (available with any Windows 7 or
●
Windows 8 downgrade operating system)
√
√√√
7
CategoryDescriptionHP
EliteBook
840
HP ZBook
14
HP
EliteBook
850
Restore media—OS-DVD:
Windows 8 Professional 64-bit (only available and
●
required with Windows 8 Professional downgrade
operating system)
Windows 8 64-bit
●
Windows 8 Country-Specific 64-bit
●
Windows 8 Emerging Market 64-bit
●
Windows 7 Home Premium 64- and 32-bit (available
●
with any Windows 7 HP operating system except AsiaPacific countries and regions and the People's Republic
of China)
Windows 7 Professional 64- and 32-bit (available with
●
any Windows 7 Professional or Windows 8
Professional downgrade except Asia-Pacific countries
and regions and the People's Republic of China)
Certified:
Microsoft WHQL
●
SuSE Linux Enterprise (SLED) 64-bit Service Pack 2
●
√√√
√√√
8Chapter 1 Product description
CategoryDescriptionHP
EliteBook
840
HP ZBook
14
HP
EliteBook
850
Web-only support:
Windows 8.1 Professional 64
●
Windows 8.1 Enterprise 64
●
Windows 8.1 Multi-Language 64
●
Windows 8.1 Emerging Markets 64
●
Windows 8.1 Chinese Market 64
●
Windows 8 Enterprise 64
●
Windows 7 Enterprise 64 and 32
●
Windows 7 Ultimate 64 and 32
●
ServiceabilityEnd user replaceable parts:
AC adapter
●
Battery
●
Hard drive/Solid-state drive
●
Keyboard
●
Memory module
●
√√√
√√√
WLAN module
●
WWAN module
●
M.2 (NGFF) Flash cache / SSD
●
9
2External component identification
Display
ComponentDescription
(1)WLAN antennas (2)*Send and receive wireless signals to communicate with wireless
(2)WWAN antennas (2)* (select models only)Send and receive wireless signals to communicate with wireless
(3)Internal microphones (2)Record sound.
(4)Webcam light (select models only)On: The webcam is in use.
(5)Webcam (select models only)Records video and captures still photographs.
10Chapter 2 External component identification
local area networks (WLAN).
wide area networks (WWAN).
For information on using the webcam, access HP Support
Assistant. To access HP Support Assistant in Windows 8, on the
Start screen, select the HP Support Assistant app. To access
HP Support Assistant in Windows 7, select Start > Help and
Support > User Guides.
ComponentDescription
(6)Internal display switchTurns off the display or initiates Sleep (Windows)/Suspend
*The antennas are not visible on the outside of the computer. For optimal transmission, keep the areas immediately around the
antennas free from obstructions. To see wireless regulatory notices, see the section of the Regulatory, Safety, and EnvironmentalNotices that applies to your country or region. To access the user guides in Windows 8, select the HP Support Assistant
app on the Start screen, select My computer, and then select User guides. TO access the user guides in Windows 7,
select Start > Help and Support > User Guides.
Top
TouchPad
(Linux) if the display is closed while the power is on.
NOTE: The display switch is not visible on the outside of the
computer.
ComponentDescription
(1)Pointing stick (select models only)Moves the pointer and selects or activates items on the
screen.
(2)Left pointing stick buttonFunctions like the left button on an external mouse.
(3)TouchPad zoneMoves the pointer and selects or activates items on the
screen.
(4)Left TouchPad buttonFunctions like the left button on an external mouse.
(5)Right pointing stick buttonFunctions like the right button on an external mouse.
(6)Right TouchPad buttonFunctions like the right button on an external mouse.
Top
11
Lights
ComponentDescription
(1)
(2)Caps lock lightOn: Caps lock is on.
(3) Microphone mute light
(4)Num lock lightOn: Num lock is on.
(5)
(6)
Power light
Wireless light
Mute light
On: The computer is on.
●
Blinking: The computer is in the Sleep state (Windows)
●
or Suspend state (Linux).
Off: The computer is off (Windows) or in Hibernation
●
(Linux).
Amber: microphone sound is off.
●
Off: microphone sound is on.
●
White: An integrated wireless device, such as a wireless
●
local area network (WLAN) device and/or a
Bluetooth® device, is on.
Amber: All wireless devices are off.
●
Amber: Computer sound is off.
●
Off: Computer sound is on.
●
12Chapter 2 External component identification
Buttons and fingerprint reader (select models only)
Top
13
ComponentDescription
(1)
Power button
When the computer is off, press the button to turn on the
●
computer.
When the computer is on, press the button briefly to
●
initiate Sleep.
When the computer is in the Sleep state, press the button
●
briefly to exit Sleep.
When the computer is in Hibernation, press the button
●
briefly to exit Hibernation.
CAUTION: Pressing and holding down the power button
will result in the loss of unsaved information.
If the computer has stopped responding and operating system
shutdown procedures are ineffective, press and hold the
power button for at least 5 seconds to turn off the computer.
To learn more about your power settings:
Windows 8:
1.From the Start screen, type power, select Settings, and
then select Power Options.
Windows 7:
1.Select Start > Control Panel > System and
Security > Power Options.
Linux:
1.Select Computer > Control Center.
2.In the left pane, click System, and then click Power
Management in the right pane.
(2) Speakers (2)Produce sound.
(3)
(4)
(5)Fingerprint reader (select models only)Allows a fingerprint logon to Windows, instead of a
Wireless buttonTurns the wireless feature on or off but does not establish a
wireless connection.
Volume mute buttonMutes and restores speaker sound.
password logon.
14Chapter 2 External component identification
Keys
ComponentDescription
(1)esc key(Windows only) Displays system information when pressed
in combination with the fn key.
(2)fn key(Windows) Executes frequently used system functions when
pressed in combination with a function key, the num lk key,
or the esc key.
(Linux) Executes frequently used system functions when
pressed in combination with a function key.
(3)
(4)Function keysExecute frequently used system functions when pressed in
(5)Embedded numeric keypad When the keypad is turned on, it can be used like an
(6)num lk keyTurns the embedded numeric keypad on and off when
Windows button (Windows only) Returns you to the Start screen from an open
app or the Windows desktop.
NOTE: Pressing the Windows button again will return you
to the previous screen.
combination with the fn key.
external numeric keypad.
Each key on the keypad performs the function indicated by
the icon in the upper-right corner of the key.
pressed in combination with the fn key.
(Linux) Alternates between the navigational and numeric
functions on the integrated numeric keypad.
Top
15
Front
ComponentDescription
(1)
(2)
(3)
(4)
Wireless light
Power light
AC adapter/Battery light
Hard drive light
White: An integrated wireless device, such as a
●
wireless local area network (WLAN) device and/
or a Bluetooth® device, is on.
Amber: All wireless devices are off.
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state
●
(Windows) or Suspend state (Linux).
Off: The computer is off or in Hibernation (Linux).
●
White: The computer is connected to external
●
power and the battery is charged from 90 to 99
percent.
Amber: The computer is connected to external
●
power and the battery is charged from 0 to 90
percent.
Blinking amber: A battery that is the only
●
available power source has reached a low battery
level. When the battery reaches a critical battery
level, the battery light begins blinking rapidly.
Off: The battery is fully charged.
●
Blinking white: The hard drive is being accessed.
●
16Chapter 2 External component identification
Amber: HP 3D DriveGuard has temporarily
●
parked the hard drive.
Left
ComponentDescription
(1)
(2)VentEnables airflow to cool internal components.
Security cable slotAttaches an optional security cable to the computer.
NOTE: The security cable is designed to act as a
deterrent, but it may not prevent the computer from being
mishandled or stolen.
NOTE: The computer fan starts up automatically to cool
internal components and prevent overheating. It is normal for
the internal fan to cycle on and off during routine operation.
External VGA monitor portConnects an external VGA monitor or projector.
USB 3.0 charging portConnects optional USB 3.0 devices and provides enhanced
USB power performance. The USB charging port can also
charge select models of cell phones and MP3 players, even
when the computer is off.
USB 3.0 ports (2)Connect optional USB 3.0 devices and provide enhanced
USB power performance.
Left
17
Right
ComponentDescription
(1)
(2)
Audio-out (headphone) jack/Audio-in
(microphone) jack
DisplayPortConnects an optional digital display device, such as a high-
Produces sound when connected to optional powered stereo
speakers, headphones, earbuds, a headset, or television
audio. Also connects an optional headset microphone.
WARNING! To reduce the risk of personal injury, adjust
the volume before putting on headphones, earbuds, or a
headset. For additional safety information, see the
Regulatory, Safety, and Environmental Notices.
To access the user guides:
Windows 8: Select the HP Support Assistant app on the
Start screen, select My computer, and then select Userguides.
Windows 7: Select Start > Help and Support > User
Guides.
NOTE: When a device is connected to the jack, the
computer speakers are disabled.
NOTE: Be sure that the device cable has a 4-conductor
connector that supports both audio-out (headphone) and
audio-in (microphone).
performance monitor or projector.
(3)Memory card readerReads data from and writes data to memory cards such as
(4)
(5)
(6)Docking connectorConnects an optional docking device.
(7)
USB 3.0 ports (2)Connect optional USB 3.0 devices and provide enhanced
RJ-45 (network) jackConnects a network cable.
Power connectorConnects an AC adapter.
18Chapter 2 External component identification
Secure Digital (SD).
USB power performance.
Bottom
NOTE:Your computer may look slightly different from the illustration in this section.
ComponentDescription
(1)Accessory battery connectorConnects an optional accessory battery.
(2)Service coverProvides access to the hard drive bay, the wireless LAN
(WLAN) module slot, the WWAN module slot, and the
memory module slots.
CAUTION: To prevent an unresponsive system,
replace the wireless module only with a wireless
module authorized for use in the computer by the
governmental agency that regulates wireless devices in
your country or region. If you replace the module and
then receive a warning message, remove the module to
restore computer functionality, and then contact support
through HP Support Assistant. To access HP Support
Assistant on the Start screen, select the HP Support
Assistant app.
(3)
(4)
Service cover release latch Releases the service cover on the computer.
Service cover release lockLocks service cover.
Bottom
19
ComponentDescription
(5)Vents (2)Enable airflow to cool internal components.
NOTE: The computer fan starts up automatically to
cool internal components and prevent overheating. It is
normal for the internal fan to cycle on and off during
routine operation.
(1)Service coverProvides access to the hard drive bay, the
wireless LAN (WLAN) module slot, the
WWAN module slot, and the memory
module slots.
CAUTION: To prevent an unresponsive
system, replace the wireless module only
with a wireless module authorized for use in
the computer by the governmental agency
that regulates wireless devices in your
country or region. If you replace the module
and then receive a warning message,
remove the module to restore computer
functionality, and then contact support
through HP Support Assistant. To access HP
Support Assistant on the Start screen, select
the HP Support Assistant app.
(2)
(3)
(4)Vents (3)Enable airflow to cool internal components.
(5)
Service cover release latch Releases the service cover on the computer.
Service cover release lockLocks the service cover.
NOTE: The computer fan starts up
automatically to cool internal components
and prevent overheating. It is normal for the
internal fan to cycle on and off during
routine operation.
SIM slot (select models only)Supports a wireless subscriber identity
module (SIM). The SIM slot is located inside
the battery bay.
Bottom
21
Service tag
When ordering parts or requesting information, provide the computer serial number and model number
provided on the service tag. It is necessary to remove the battery to obtain these numbers. See
on page 50 for battery removal instructions.
Battery
ItemComponentDescription
(1)Product nameThis is the product name affixed to the front of
(2)Serial number (s/n)This is an alphanumeric identifier that is unique to
(3)Part number/Product number (p/n)This number provides specific information about
(4)Warranty periodThis number describes the duration of the warranty
(5)Model descriptionThis is the alphanumeric identifier used to locate
22Chapter 2 External component identification
the computer.
each product.
the product’s hardware components. The part number
helps a service technician determine what components
and parts are needed.
period for the computer.
documents, drivers, and support for the computer.
3Illustrated parts catalog
Computer major components
Computer major components
23
ItemComponentSpare part number
(1)Display assembly: Non-touch display assemblies are spared at the subcomponent level only. For more display
assembly spare part information, see
Touch screen display assemblies are only spared as whole units.
Display assembly, 14-inch, HD+, for use in HP EliteBook 840 models737735-001
Display assembly, 14-inch, HD+, for use in HP ZBook 14 models739848-001
(2)Keyboard (includes cables)
Display assembly subcomponents on page 28.
NOTE: For a detailed list of available keyboards, see
Backlit, with pointing stick730794-xx1
With pointing stick; no backlight731179-xx1
(3)Top cover (includes TouchPad):
For use on HP EliteBook 840 models730964-001
For use on HP ZBook 14730965-001
For use on HP EliteBook 850 models730800-001
(4)Power button board
For use on HP EliteBook 840/HP ZBook 14 models730959-001
For use on HP EliteBook 850 models730822-001
(5)RTC battery665733-001
(6)Card reader board
For use on HP EliteBook 840/HP ZBook 14 models730955-001
For use on HP EliteBook 850 models730821-001
(7)Speaker assembly (includes cable)730798-001
Sequential part number listing on page 34.
(8)VGA/USB board
For use in HP EliteBook 840/HP ZBook 14 models730966-001
For use in HP EliteBook 850 models730820-001
(9)Fingerprint reader board (includes cable, bracket, and insulator)
For use in HP EliteBook 840/HP ZBook 14 models730956-001
737660-001NDisplay Hinge Kit for use only on HP ZBook 14 models (includes left and right hinges and hinge
737735-001NDisplay assembly, 14-inch, HD+, for use in HP EliteBook 840 models
739558-001NPlastics Kit for use only on HP ZBook 14 models (includes SD card insert, RJ-45 door, fingerprint
739848-001NDisplay assembly, 14-inch, HD+, for use in HP ZBook 14 models
743008-001ASolid-state drive, 32-GB (includes hard drive bracket and screws)
744483-001ASolid-state drive, 128-GB (includes hard drive bracket and screws); for use only in HP EliteBook 15
CSR
Description
flag
covers)
reader insert, and RJ-45 spring)
models
745309-001AService cover for use only on HP EliteBook 850 models; without CCC mark
745310-001AService cover for use only on HP EliteBook 850 models; for RCTO
745311-001AService cover for use only on HP EliteBook 840/HP ZBook 14 models; RCTO
745313-001AService cover for use only on HP EliteBook 840 models; no CCC mark
745314-001AService cover for use only on HP ZBook 14 models; no CCC mark
42Chapter 3 Illustrated parts catalog
4Removal and replacement
procedures preliminary
requirements
Tools required
You will need the following tools to complete the removal and replacement procedures:
Flat-bladed screwdriver
●
Magnetic screwdriver
●
Phillips P0 and P1 screwdrivers
●
Service considerations
The following sections include some of the considerations that you must keep in mind during
disassembly and assembly procedures.
NOTE:As you remove each subassembly from the computer, place the subassembly (and all
accompanying screws) away from the work area to prevent damage.
Plastic parts
CAUTION:Using excessive force during disassembly and reassembly can damage plastic parts. Use
care when handling the plastic parts. Apply pressure only at the points designated in
the maintenance instructions.
Cables and connectors
CAUTION:When servicing the computer, be sure that cables are placed in their proper locations
during the reassembly process. Improper cable placement can damage the computer.
Cables must be handled with extreme care to avoid damage. Apply only the tension required to unseat
or seat the cables during removal and insertion. Handle cables by the connector whenever possible. In
all cases, avoid bending, twisting, or tearing cables. Be sure that cables are routed in such a way that
Tools required
43
they cannot be caught or snagged by parts being removed or replaced. Handle flex cables with
extreme care; these cables tear easily.
Drive handling
CAUTION:Drives are fragile components that must be handled with care. To prevent damage to
the computer, damage to a drive, or loss of information, observe these precautions:
Before removing or inserting a hard drive, shut down the computer. If you are unsure whether
the computer is off or in Hibernation, turn the computer on, and then shut it down through
the operating system.
Before handling a drive, be sure that you are discharged of static electricity. While handling a drive,
avoid touching the connector.
Before removing a diskette drive or optical drive, be sure that a diskette or disc is not in the drive and
be sure that the optical drive tray is closed.
Handle drives on surfaces covered with at least one inch of shock-proof foam.
Avoid dropping drives from any height onto any surface.
After removing a hard drive, an optical drive, or a diskette drive, place it in a static-proof bag.
Avoid exposing an internal hard drive to products that have magnetic fields, such as monitors
or speakers.
Avoid exposing a drive to temperature extremes or liquids.
If a drive must be mailed, place the drive in a bubble pack mailer or other suitable form of protective
packaging and label the package “FRAGILE.”
Grounding guidelines
Electrostatic discharge damage
Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure
determine the degree of sensitivity. Networks built into many integrated circuits provide some
protection, but in many cases, ESD contains enough power to alter device parameters or melt
silicon junctions.
A discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or
microcircuitry. Even if the spark is neither felt nor heard, damage may have occurred.
An electronic device exposed to ESD may not be affected at all and can work perfectly throughout a
normal cycle. Or the device may function normally for a while, then degrade in the internal layers,
reducing its life expectancy.
44Chapter 4 Removal and replacement procedures preliminary requirements
CAUTION:To prevent damage to the computer when you are removing or installing internal
components, observe these precautions:
Keep components in their electrostatic-safe containers until you are ready to install them.
Before touching an electronic component, discharge static electricity by using the guidelines described
in this section.
Avoid touching pins, leads, and circuitry. Handle electronic components as little as possible.
If you remove a component, place it in an electrostatic-safe container.
The following table shows how humidity affects the electrostatic voltage levels generated by
different activities.
CAUTION:A product can be degraded by as little as 700 V.
Typical electrostatic voltage levels
Relative humidity
Event10%40%55%
Walking across carpet35,000 V15,000 V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of bench worker6,000 V800 V400 V
Removing DIPS from plastic tube2,000 V700 V400 V
Removing DIPS from vinyl tray11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCB26,500 V20,000 V7,000 V
Packing PCBs in foam-lined box21,000 V11,000 V5,000 V
Grounding guidelines
45
Packaging and transporting guidelines
Follow these grounding guidelines when packaging and transporting equipment:
To avoid hand contact, transport products in static-safe tubes, bags, or boxes.
●
Protect ESD-sensitive parts and assemblies with conductive or approved containers or packaging.
●
Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations.
●
Place items on a grounded surface before removing items from their containers.
●
Always be properly grounded when touching a component or assembly.
●
Store reusable ESD-sensitive parts from assemblies in protective packaging or
●
nonconductive foam.
Use transporters and conveyors made of antistatic belts and roller bushings. Be sure that
●
mechanized equipment used for moving materials is wired to ground and that proper materials
are selected to avoid static charging. When grounding is not possible, use an ionizer to dissipate
electric charges.
Workstation guidelines
Follow these grounding workstation guidelines:
Cover the workstation with approved static-shielding material.
●
Use a wrist strap connected to a properly grounded work surface and use properly grounded tools
●
and equipment.
Use conductive field service tools, such as cutters, screwdrivers, and vacuums.
●
When fixtures must directly contact dissipative surfaces, use fixtures made only of static-
●
safe materials.
Keep the work area free of nonconductive materials, such as ordinary plastic assembly aids
●
and Styrofoam.
Handle ESD-sensitive components, parts, and assemblies by the case or PCM laminate. Handle
●
these items only at static-free workstations.
Avoid contact with pins, leads, or circuitry.
●
Turn off power and input signals before inserting or removing connectors or test equipment.
●
46Chapter 4 Removal and replacement procedures preliminary requirements
Equipment guidelines
Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.
When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible straps
●
with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground,
wear a strap snugly against the skin at all times. On grounded mats with banana-plug connectors,
use alligator clips to connect a wrist strap.
When standing, use foot straps and a grounded floor mat. Foot straps (heel, toe, or 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 foot straps on both feet with a minimum of one
megohm resistance between the operator and ground. To be effective, the conductive must be
worn in contact with the skin.
The following grounding equipment is recommended to prevent electrostatic damage:
Antistatic tape
●
Antistatic smocks, aprons, and sleeve protectors
●
Conductive bins and other assembly or soldering aids
●
Nonconductive foam
●
Conductive tabletop workstations with ground cords of one megohm resistance
●
Static-dissipative tables or floor mats with hard ties to the ground
●
Field service kits
●
Static awareness labels
●
Material-handling packages
●
Nonconductive plastic bags, tubes, or boxes
●
Metal tote boxes
●
Electrostatic voltage levels and protective materials
●
The following table lists the shielding protection provided by antistatic bags and floor mats.
MaterialUseVoltage protection level
Antistatic plasticsBags1,500 V
Carbon-loaded plasticFloor mats7,500 V
Metallized laminateFloor mats5,000 V
Grounding guidelines
47
5Removal and replacement
procedures for Customer SelfRepair parts
CAUTION:The Customer Self-Repair program is not available in all locations. Installing a part not
supported by the Customer Self-Repair program may void your warranty. Check your warranty to
determine if Customer Self-Repair is supported in your location.
Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 15 screws that must be removed, replaced, and/or loosened when servicing
the Customer Self-Repair parts. Make special note of each screw size and location during removal and
replacement.
Service cover
DescriptionSpare part number
Service cover for use only on HP EliteBook 840 models730960-001
Service cover for use only on HP EliteBook 840 models; no CCC mark745313-001
Service cover for use only on HP EliteBook 840/HP ZBook 14 models; RCTO745311-001
Service cover for use only on HP ZBook 14 models730961-001
Service cover for use only on HP ZBook 14 models; no CCC mark745314-001
Service cover for use only on HP EliteBook 850 models730812-001
Service cover for use only on HP EliteBook 850 models; without CCC mark745309-001
Service cover for use only on HP EliteBook 850 models; for RCTO745310-001
48Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
Before removing the service cover, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
Remove the service cover:
1.Slide the service cover release latch (1), remove the screw (if the optional screw is being used)
(2), and then slide the release latch again (3) to release the service cover.
NOTE:If you do not want to use the optional screw, you can store it inside the service cover.
2.Slide the service cover toward the front of the computer (4) and lift (5) to remove the service
cover.
Reverse the removal procedures to install the service cover.
Component replacement procedures
49
Battery
DescriptionSpare part number
3-cell, 50-Wh, 4.5-Ah717376-001
3-cell, 24-Wh, 2.4-Ah717375-001
Before disassembling the computer, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the service cover (see
Service cover on page 48).
Remove the battery:
1.Slide the battery release latches (1), and then lift the battery (2).
2.Remove the battery from the computer (3).
Install the battery by inserting it into the battery bay until you hear a click.
50Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
Hard drive
NOTE:The hard drive spare part kit does not include the hard drive bracket or screws.
DescriptionSpare part number
1-TB, 5400-rpm, 2.5-inch676521-001
500-GB, 7200-rpm, 7-mm, SED703268-001
500-GB, 7200-rpm, 2.5-inch, SED683801-001
500-GB, 7200-rpm, 7-mm703267-001
500-GB, 5400-rpm, 7-mm683802-001
500-GB, 5400-rpm, 7-mm, FIPS730946-001
320-GB, 5400-rpm, 7-mm634862-001
320-GB, 5400-rpm, 7-mm645193-001
Hard Drive Hardware Kit (includes hard drive bracket and screws)730793-001
Before removing the hard drive, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the service cover (see
Service cover on page 48).
5.Disconnect the battery.
Remove the hard drive:
1.Turn the computer upside down on a flat surface.
Component replacement procedures
51
2.Loosen the 4 hard drive screws (1). Slide the hard drive (2) forward, and then remove it (3).
3.If it is necessary to disassemble the hard drive, perform the following steps:
a.Remove the four Phillips PM3.0×3.0 screws (1) that secure the hard drive bracket to
the hard drive.
b.Slide the hard drive bracket (2) off the hard drive. The hard drive bracket and screws are
available in the Hard Drive Hardware Kit, spare part number 730793-001.
Reverse this procedure to reassemble and install the hard drive.
52Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
CAUTION:To prevent an unresponsive system, replace the wireless module only with a wireless
module authorized for use in the computer by the governmental agency that regulates wireless devices
in your country or region. If you replace the module and then receive a warning message, remove
the module to restore device functionality, and then contact technical support.
Before removing the WLAN module, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the service cover (see
Service cover on page 48).
5.Disconnect the battery.
Remove the WLAN module:
1.Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE:The WLAN antenna cable labeled “1” connects to the WLAN module “Main” terminal
labeled “1”. The WLAN antenna cable labeled “2” connects to the WLAN module “Aux” terminal
labeled “2”. If the computer is equipped with an 802.11a/b/g/n WLAN module, the yellow
WLAN antenna cable connects to the middle terminal on the WLAN module.
2.Remove the two Phillips PM2.0×3.0 screws (2) that secure the WLAN module to
the base enclosure. (The WLAN module tilts up.)
60Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
3.Remove the WLAN module (3) by pulling the module away from the slot at an angle.
NOTE:WLAN modules are designed with a notch to prevent incorrect insertion.
NOTE:If the WLAN antennas are not connected to the terminals on the WLAN module, the protective
sleeves must be installed on the antenna connectors, as shown in the following illustration.
Reverse this procedure to install the WLAN module.
Component replacement procedures
61
Keyboard
NOTE:For a detailed list of available keyboards, see Sequential part number listing on page 34.
DescriptionSpare part number
Keyboard, backlit, with pointing stick731179-xx1
Keyboard with pointing stick; no backlight730794-xx1
Before removing the keyboard, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
the computer on, and then shut it down through the operating system.
4.Remove the service cover (see
5.Remove the battery (see
Hard drive on page 51).
Battery on page 50).
Remove the keyboard:
1.Loosen the two Phillips captive screws that secure the keyboard to the computer.
2.Rest and secure the partially open computer on its side.
62Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
3.Insert a screw driver or similar thin tool into the keyboard release hole, and then press on the back
of the keyboard until the keyboard disengages from the computer.
4.Position the computer right-side up with the front toward you.
5.Lift the rear edge of the keyboard upward.
NOTE:The backlight cable is present only on HP EliteBook 850 models.
Component replacement procedures
63
6.To remove the keyboard from HP EliteBook 840/HP ZBook14 models:
a.Swing the keyboard up and forward (1) until it rests upside down on the palm rest.
b.Disconnect the main keyboard cable from the zero insertion force (ZIF) connector (2) on the
system board.
c.Disconnect the pointing stick cable from the zero insertion force (ZIF) connector (3) on the
system board.
d.Remove the keyboard (4).
7.To remove the keyboard from HP EliteBook 850 models:
a.Swing the keyboard up and forward (1) until it rests upside down on the palm rest.
b.Disconnect the main keyboard cable from the zero insertion force (ZIF) connector (2) on the
system board.
c.Disconnect the pointing stick cable from the zero insertion force (ZIF) connector (3) on the
system board.
d.Disconnect the backlight cable from the zero insertion force (ZIF) connector (4) on the system
board.
64Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
e.Remove the keyboard (5).
Reverse this procedure to install the keyboard.
Component replacement procedures
65
6Removal and replacement
procedures for Authorized Service
Provider parts
CAUTION:Components described in this chapter should only be accessed by an authorized service
provider. Accessing these parts can damage the computer or void the warranty.
Component replacement procedures
NOTE:Details about your computer, including model, serial number, product key, and length of
warranty, are on the service tag at the bottom of your computer. See Service tag and PCID label on
page 21 for details.
This chapter provides removal and replacement procedures for Authorized Service Provider only parts.
There are as many as 61 screws that must be removed, replaced, and/or loosened when servicing
the Authorized Service Provider parts. Make special note of each screw size and location during
removal and replacement.
Display panel (non-touch)
NOTE:HP EliteBook 840 models offer both touch and non-touch displays. Non-touch displays are
spared at the subcomponent level only. Touch displays are only spared as a whole (touch display
components are not spared).
In non-touch models, you can remove the raw display panel with the display assembly still connected to
the computer. The following section shows how to remove the raw display panel without removing the
display assembly from the computer.
See
Display assembly on page 97 later in this chapter to remove internal components that require
that you remove the display assembly.
DescriptionSpare part number
Display bezel
Display bezel for use in HP EliteBook 840 models730952-001
Display bezel for use in HP ZBook 14 models730953-001
66Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
DescriptionSpare part number
Display bezel for use in HP EliteBook 850 models730814-001
Display panel
(35.6-cm) 14.0-in LED, HD, AntiGlare (AG), SVA (1366×768), 200 nits737657-001
(35.6-cm) 14.0-in LED, HD+, AG, SVA (1920×1080), 250 nits737658-001
(35.6-cm) 14.0-in LED, FHD, AG, SVA (1920×1080), 300 nits737659-001
(39.6-cm) 15.6-in LED, HD, AG, SVA (1368×768), 300 nits733684-001
(39.6-cm) 15.6-in LED, FHD, AG, SVA (1920×1080), 200 nits733685-001
Webcam module730542-001
Microphone module730795-001
Before removing the display assembly, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the service cover (see
Service cover on page 48).
5.Disconnect the battery.
Remove the display panel:
1.Lift to disengage the bezel on the bottom (1), left and right sides (2), and top (3).
Component replacement procedures
67
2.Remove the bezel from the display assembly (4).
3.Remove the four Phillips PM2.0×3.0 screws (1) that secure the display panel to the display
enclosure.
4.Lift and rotate the panel onto the computer (2).
68Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
5.On the back of the display panel, lift the tape that secures the display cable to the display panel
(1), and the disconnect the display cable from the panel (2).
6.Lift the display panel from the display enclosure.
7.If it is necessary to replace the webcam/microphone module:
a.Release the tape that secures the webcam cable to the module (1).
b.Disconnect the cable (2) from the module.
CAUTION:Handle the module with caution. The module has a thin profile and is
susceptible to damage when not handled carefully.
Component replacement procedures
69
c.Remove the module (3) from the display enclosure. (The module is attached to the display
enclosure with double-sided tape.)
Reverse this procedure to reassemble and install the display panel components.
70Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Base enclosure
Base enclosure removal procedures for HP EliteBook 840/HP ZBook 14 models and HP EliteBook 15
models are in separated in the following sections.
Base enclosure (HP EliteBook 840/HP ZBook14 models)
DescriptionSpare part number
Base enclosure for use only on HP EliteBook 840 models730950-001
Base enclosure for use only on HP ZBook 14 models730951-001
Before removing the base enclosure, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the following components:
a.Service cover (see
b.Battery (see
c.Keyboard (see
Service cover on page 48)
Battery on page 50)
Keyboard on page 62)
Use the following image as an overview of all base enclosure screw locations.
Remove the base enclosure:
1.Position the computer upside down.
Component replacement procedures
71
2.Remove the seven rubber screw covers from the screws outside of the service cover.
NOTE:The eight screws outside of the service cover also have rubber covers.
3.Remove the 16 Torx T8M2.5×5.0 screws that secure the base enclosure to the computer.
72Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
4.Remove the Phillips PM2.0×8.0 screw (1) near the media card reader and the six Phillips
PM2.0×5.0 broadhead screws (2) inside the battery bay that secure the base enclosure to
the computer.
5.Lift the base enclosure off the computer.
Reverse this procedure to install the base enclosure.
Component replacement procedures
73
Base enclosure (HP EliteBook 850 models)
DescriptionSpare part number
Base enclosure for use only on HP EliteBook 850 models (includes RJ-45 door with spring)730813-001
Before removing the base enclosure, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the following components:
a.Service cover (see
b.Battery (see
c.Keyboard (see
Service cover on page 48)
Battery on page 50)
Keyboard on page 62)
Use the following image as an overview of all base enclosure screw locations.
Remove the base enclosure:
1.Position the computer upside down.
74Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
2.Remove the seven rubber screw covers from the screws outside of the service cover.
3.Remove the 21 Torx T8M2.5×5.0 screws that secure the base enclosure to the computer.
Component replacement procedures
75
4.Remove the Phillips PM2.0×8.0 screw (1) near the media card reader and the five Phillips
PM2.0×5.0 broadhead screws (2) inside the battery bay that secure the base enclosure to
the computer.
5.Lift the base enclosure off the computer.
Reverse this procedure to install the base enclosure.
76Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Fan
DescriptionSpare part number
Fan (includes cable)730792-001
Before removing the fan, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the service cover (see
5.Remove the battery (see
6.Remove the keyboard (see
7.Remove the base enclosure (see
Service cover on page 48).
Battery on page 50).
Keyboard on page 62).
Base enclosure on page 71).
Remove the fan:
1.Loosen the two captive Phillips screws (1) that secure the fan to the base enclosure.
2.Disconnect the fan cable (2) from the system board.
3.Remove the fan (3).
Reverse this procedure to install the fan.
Component replacement procedures
77
Card reader board
DescriptionSpare part number
Card reader board for use in HP EliteBook 840/HP ZBook 14 models730955-001
Card reader board for use in HP EliteBook 850 models730821-001
Before removing the card reader board, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the following components:
a.Service cover (see
b.Battery (see
c.Fan (see
Fan on page 77)
d.Keyboard (see
e.Base enclosure (see
Service cover on page 48)
Battery on page 50)
Keyboard on page 62)
Base enclosure on page 71)
Remove the card reader board:
1.Disconnect the larger card reader cable (1) and the smaller touchpad cable (2) from the the card
reader board.
2.Using a thin tool, pry up the left side of the board to disengage it from the top cover (3).
78Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
3.Remove the card reader board (4).
Reverse this procedure to install the card reader board.
Component replacement procedures
79
VGA/USB board
DescriptionSpare part number
VGA/USB board for use in HP EliteBook 840/HP ZBook 14 models730966-001
VGA/USB board for use in HP EliteBook 850 models730820-001
Before removing the VGA/USB board, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the following components:
a.Service cover (see
b.Battery (see
c.Fan (see
Fan on page 77)
d.Keyboard (see
e.Base enclosure (see
Service cover on page 48)
Battery on page 50)
Keyboard on page 62)
Base enclosure on page 71)
Remove the VGA/USB board:
1.Disconnect the cable from the VGA/USB board (1).
2.Remove the two Phillips PM2.0×5.0 screws (2) that secure the VGA/USB board to the top cover.
80Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
3.Remove the VGA/USB board from the top cover (3).
Reverse this procedure to install the VGA/USB board.
Heat sink
NOTE:The heat sink spare part kit includes replacement thermal material.
DescriptionSpare part number
For use only on HP EliteBook 840/HP ZBook 14 models with discrete graphics730962-001
For use only on HP EliteBook 840/HP ZBook 14 models with UMA graphics730963-001
For use only on HP EliteBook 850 models with discrete graphics732626-001
For use only on HP EliteBook 850 models with UMA graphics730815-001
Before removing the heat sink, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
the computer on, and then shut it down through the operating system.
4.Remove the following components:
a.Service cover (see
b.Battery (see
Service cover on page 48)
Battery on page 50)
Component replacement procedures
81
c.Fan (see Fan on page 77)
d.Keyboard (see
e.Base enclosure (see
Keyboard on page 62)
Base enclosure on page 71)
Remove the heat sink:
NOTE:Step 2 applies to computer models equipped with a graphics subsystem with discrete
memory. See step 3 for heat sink removal information for computer models equipped with a graphics
subsystem with UMA memory.
1.Following the 1, 2, 3, 4, 5, 6 sequence stamped into the heat sink, loosen the six captive Philllips
screws (1) – (6) that secure the heat sink to the system board, and then remove the heat sink (7).
NOTE:Due to the adhesive quality of the thermal material located between the heat sink and
the system board components, it may be necessary to move the heat sink from side to side to
detach it.
82Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
2.Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four captive Philllips
screws (1) – (4) that secure the heat sink to the system board, and then remove the heat sink (5).
NOTE:Due to the adhesive quality of the thermal material located between the heat sink and
the system board components, it may be necessary to move the heat sink from side to side to
detach it.
3.The following illustrations show the replacement thermal material locations. The thermal material
must be thoroughly cleaned from the surfaces of the heat sink and the system board components
Component replacement procedures
83
each time the heat sink is removed. Replacement thermal material is included with the heat sink,
processor, and system board spare part kits.
a.Discrete models:
Thermal paste is used on the system board components (1) and (3) and on the heat sink
areas (2) and (4) that services them.
84Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
b.UMA models:
Thermal paste is used on the system board component (1) and on the heat sink area (2) that
services it.
Reverse this procedure to install the heat sink.
Component replacement procedures
85
Power button board
DescriptionSpare part number
Power button board for use in HP EliteBook 840/HP ZBook 14 models730959-001
Power button board for use in HP EliteBook 850 models730822-001
Before removing the power button board, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the following components:
a.Service cover (see
b.Battery (see
c.Fan (see
Fan on page 77)
d.Keyboard (see
e.Base enclosure (see
f.Heat sink (see
Service cover on page 48)
Battery on page 50)
Keyboard on page 62)
Base enclosure on page 71)
Heat sink on page 81)
Remove the power button board:
1.Disconnect the power button board cable from the power button board (1).
2.Remove the broadhead Phillips PM2.0×3.0 screw that secures the board (2) to the top cover.
86Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
3.Slide the power toward the inside of the top cover, and then lift it off the top cover (3).
Reverse this procedure to install the power button board.
Component replacement procedures
87
Fingerprint reader assembly
DescriptionSpare part number
Fingerprint reader assembly for use in HP EliteBook 840/HP ZBook 14 models (includes cable,
bracket, and insulator)
Fingerprint reader assembly for use in HP EliteBook 850 models (includes cable, bracket, and
insulator)
730956-001
730817-001
Before removing the fingerprint reader assembly, follow these steps:
1.Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect the power from the computer by unplugging the power cord from the computer.
3.Disconnect all external devices from the computer.
4.Remove the following components:
a.Service cover (see
b.Battery (see
c.Fan (see
Fan on page 77)
d.Keyboard (see
Service cover on page 48)
Battery on page 50)
Keyboard on page 62)
e.Base enclosure (see
Base enclosure on page 71)
Remove the fingerprint reader assembly:
1.Turn the computer upside down.
2.Remove Mylar cover from atop the that secure the fingerprint reader assembly (1).
88Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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