HP 14-ak000 Maintenance and Service Guide

HP Chromebook (model numbers 14-ak000 through 14-ak099) HP Chromebook 14 G4

Maintenance and Service Guide IMPORTANT! This document is intended for HP authorized service providers only.

Android is a U.S. registered trademark of Android Corporation. Bluetooth is a trademark owned by its proprietor and used by HP under license. NVIDIA is a trademark of NVIDIA Corporation in the U.S. and other countries. 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 2015

Document Part Number: 828939-001

Product notice

This user guide describes features that are common to most models. Some features may not be available on your computer.

Software terms

By installing, copying, downloading, or otherwise using any software product preinstalled on this computer, you agree to be bound by the terms of the HP End User License Agreement (EULA). If you do not accept these license terms, your sole remedy is to return the entire unused product (hardware and software) within 14 days for a full refund subject to the refund policy of your seller.

For any further information or to request a full refund of the price of the computer, please contact your seller.

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place

the device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airow. 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 dened by the International Standard for Safety of Information Technology Equipment (IEC 60950).

iii

iv Safety warning notice

Table of contents

1 Product description ....................................................................................................................................... 1

2 External component identication .................................................................................................................. 3

Display .................................................................................................................................................................... 3

Left side ................................................................................................................................................................. 4

Right side ............................................................................................................................................................... 5

Top .......................................................................................................................................................................... 6

TouchPad ............................................................................................................................................. 6

Buttons ................................................................................................................................................ 7

Bottom ................................................................................................................................................................... 8

Labels ..................................................................................................................................................................... 9

3 Illustrated parts catalog .............................................................................................................................. 10

Computer major components .............................................................................................................................. 10

Display assembly subcomponents ...................................................................................................................... 14

Rubber Kit ............................................................................................................................................................ 16

Miscellaneous parts ............................................................................................................................................. 16

4 Removal and replacement preliminary requirements ..................................................................................... 18

Tools required ...................................................................................................................................................... 18

Service considerations ......................................................................................................................................... 18

Plastic parts ....................................................................................................................................... 18

Cables and connectors ...................................................................................................................... 19

Drive handling ................................................................................................................................... 19

Grounding guidelines ........................................................................................................................................... 19

Electrostatic discharge damage ........................................................................................................ 19

Packaging and transporting guidelines .......................................................................... 21

Workstation guidelines ................................................................................ 21

5 Removal and replacement procedures for Authorized Service Provider parts ................................................... 23

Component replacement procedures .................................................................................................................. 23

Keyboard/top cover ........................................................................................................................... 23

TouchPad ........................................................................................................................................... 27

Power connector cable ...................................................................................................................... 29

USB board .......................................................................................................................................... 30

WLAN/Bluetooth combo card ............................................................................................................ 31

Heat sink ............................................................................................................................................ 33

Display assembly ............................................................................................................................... 35

Battery ............................................................................................................................................... 42

Speakers ............................................................................................................................................ 44

System board .................................................................................................................................... 45

6 Specications .............................................................................................................................................. 47

7 Using HP PC Hardware Diagnostics (UEFI) ....................................................................................................... 48

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 48

8 Power cord set requirements ........................................................................................................................ 50

Requirements for all countries ............................................................................................................................ 50

Requirements for specic countries and regions ................................................................................................ 50

9 Statement of memory volatility .................................................................................................................... 52

Nonvolatile memory usage ................................................................................................................................. 56

Questions and answers ....................................................................................................................................... 58

Using HP Sure Start (select models only) ............................................................................................................ 59

10 Recycling .................................................................................................................................................. 60

Index ............................................................................................................................................................. 61

1 Product description

Category Description

Product Name HP Chromebook (model numbers 14-ak000 through 14-ak099)

HP Chromebook 14 G4

Processor Intel Celeron N2940 (1.83GHz, turbo up to 2.25GHz), 1333MHz/1MB L2, Quad SDP4.5W, BGA

Intel Celeron N2840 (2.16GHz, turbo up to 2.58GHz), 1333MHz/1MB L2, Dual SDP4.5W, BGA

Chipset Integrated SoC processor controller hub (PCH) for use on all computer models

Graphics Internal Graphics: Intel HD graphics

Support for HD decode, DX11, and HDMI

Panel Non-touch

14.0-in, high-denition (HD), WLED, anti-glare (1366×768), at (3.6 mm), SVA, 220 nits typical brightness

14.0-in full high-denition (FHD), WLED, anti-glare (1920x1080), slim (3.0 mm), UWVA, 220 nits, eDP, 220 nits typical brightness

* FHD panel requires N2940 processor and 4G memory.

Memory Onboard system memory

Supports up to 4096-MB maximum on-board system memory

DDR3L-1600 single channel support (DDR3L-1600 downgrade to DDR3L-1333) (for 2 GB memory)

DDR3L-1600 dual channel support (DDR3L-1600 downgrade to DDR3L-1333) (for 4 GB memory)

Storage Supports 16- and 32-GB embedded MultiMedia Controller (eMMC)

Audio and video HP TrueVision HD slim webcam, 1280×720 by 30 frames per second; xed (no tilt), with activity

LED

Single digital microphone with appropriate echo-cancellation, noise-suppression software

Two speakers

HD audio

Wireless Integrated wireless local area network (WLAN) options with dual antennas

Intel Dual Band Wireless-AC 7260 802.11 ac 2x2 WiFi + BT 4.0 Combo Adapter

Intel Dual Band Wireless-N 7260AN 802.11 a/b/g/n 2x2 WiFi + BT 4.0 combo

External media cards HP Multi-Format Digital Media Card Reader

Supports micro SD/SDHC/SDXC up to UHS-I

Push-Push Insertion/Removal

Ports AC Smart Pin adapter plug (4.5 mm barrel)

Headphone/microphone combo jack

HDMI v1.4b supporting up to 1920×1080 @ 60Hz

USB 3.0 port (1)

Category Description

USB 2.0 ports (2)

Keyboard/pointing devices Full-sized, textured, island-style, Google keyboard (black) for use only on HP Chromebook 14 G4

Full-sized, textured, island-style, Google keyboard (white) for use only on HP Chromebook 14

Touchpad requirements:

Multitouch gestures enabled

Taps enabled as default

Power requirements Battery

Support for a 3-cell, 37-WHr battery

AC adapters

65-W, EM (for India and the People’s Republic of China)

45-W AC adapter (not for India or the People’s Republic of China)

1.0 meter power cord

Operating system Preinstalled: Google Chrome operating system

Serviceability End user replaceable part: AC adapter

2 Chapter 1 Product description

2 External component identication

Display

Component Description

(1) Internal display switch Turns o the display and initiates Sleep if the display is closed while

the power is on.

NOTE: The internal display switch is not visible from the outside of

the computer.

(2) WLAN antennas* Send and receive wireless signals to communicate with wireless local

area networks (WLANs).

NOTE: The position of the WLAN antennas may dier, depending

on model.

(3) Internal microphone Records sound.

(4) Webcam Records video, captures still photographs, and allows video

conferences and online chat by means of streaming video.

(5) Webcam light On: The webcam is in use.

*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the antennas free from obstructions. For wireless regulatory notices, see the section of the Regulatory, Safety, and Environmental Notices that applies to your country or region.

Display 3

Left side

Component Description

(1) Security cable slot Attaches an optional security cable to the computer.

(2) HDMI port Connects an optional video or audio device, such as a high-

(3) USB 3.0 charging (powered) port Connects an optional USB device, such as a keyboard, mouse,

NOTE: The security cable is designed to act as a deterrent,

but it may not prevent the computer from being mishandled or stolen.

denition television, any compatible digital or audio component, or a high-speed High-Denition Multimedia Interface (HDMI) device.

external drive, printer, scanner or USB hub. Standard USB ports will not charge all USB devices or will charge using a low current. Some USB devices require power and require you to use a powered port.

NOTE: USB charging ports can also charge select cell phones

and MP3 players, even when the computer is o.

(4) Audio-out (headphone)/Audio-in (microphone)

jack

(5) Micro memory card reader Reads optional memory cards that store, manage, share, or

(6) Power light

Connects optional powered stereo speakers, headphones, earbuds, a headset, or a television audio cable. Also connects an optional headset microphone. This jack does not support optional microphone-only devices.

WARNING! To reduce the risk of personal injury, adjust the

volume before putting on headphones, earbuds, or a headset.

NOTE: When a device is connected to the jack, the computer

speakers are disabled.

NOTE: Be sure that the device cable has 4-conductor

connector that supports both audio-out (headphone) and audio-in (microphone).

access information.

To insert a card:

▲

Hold the card label-side up, with connectors facing the slot, insert the card into the slot, and then push in on the card until it is rmly seated.

To remove a card:

▲

Press in on the card it until it pops out.

●

White: Computer is on.

●

Blinking white: Computer is in Sleep mode.

4 Chapter 2 External component identication

Component Description

Right side

Component Description

(1) USB 2.0 ports Connect optional USB devices, such as a keyboard, mouse,

●

O: The computer is o.

external drive, printer, scanner or USB hub.

(2) AC adapter light

(3) Power connector Connects an AC adapter.

●

White: The AC adapter is connected and the battery is charged.

●

Amber: The AC adapter is connected and the battery is charging.

●

O: The computer is using battery power.

Right side 5

Top

TouchPad

Component Description

(1) TouchPad zone Moves the on-screen pointer and selects or activates items on

the screen.

6 Chapter 2 External component identication

Buttons

Component Description

(1) Power button

●

When the computer is o, press the button to turn on the computer.

●

When the computer is in the Sleep state, press the button briey to exit Sleep.

●

When the computer is on and you want to lock the screen, press the power button until you see the sign-in screen appear. Pressing the power button during screen-lock mode turns o the computer.

●

When the computer is on and you want to turn it o, press and hold the power

Top 7

Bottom

Component Description

(1) Speakers (2) Produce sound.

8 Chapter 2 External component identication

Labels

The labels axed to the computer provide information you may need when you troubleshoot system problems or travel internationally with the computer.

IMPORTANT: All labels described in this section will be axed to the bottom of the computer.

NOTE: Your label may look slightly dierent from the illustration in this section.

●

Service label—Provides important information, including the following:

Component

(1) Model name (select products only)

(2) Product number

(3) Serial number

(4) Warranty period

Have this information available when you contact support.

●

Regulatory label—Provides regulatory information about the computer.

●

Wireless certication label or labels—Provide information about optional wireless devices and the approval markings of some of the countries or regions in which the devices have been approved for use. If your computer model includes one or more wireless devices, one or more certication labels are included with your computer. You may need this information when traveling internationally.

Labels 9

3 Illustrated parts catalog

NOTE: HP continually improves and changes product parts. For complete and current information on

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions.

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 Labels on page 9 for details.

Computer major components

10 Chapter 3 Illustrated parts catalog

Item Component Spare part number

(1) Display assembly: The display assembly is spared at the subcomponent level only. For display assembly spare part

information, see Display assembly subcomponents on page 14.

(2) TouchPad (includes gasket)

For use in HP Chromebook 14 G4 models 830874-001

For use in silver HP Chromebook models 830874-001

For use in blue HP Chromebook models 835047-001

For use in purple HP Chromebook models 835048-001

(3) Touchpad cable 830870-001

(4) Keyboard/top cover (includes keyboard cable):

HP Chromebook 14 G4 models in silver nish:

●

For use in Belgium 834913-A41

●

For use in Canada 834913-DB1

●

For use in the Czech Republic and Slovakia 834913-FL1

●

For use in Denmark, Finland, and Norway 834913-DH1

●

For use in France 834913-051

●

For use in Germany 834913-041

●

For use in India 834913-D61

●

For use in Israel 834913-BB1

●

For use in Italy 834913-061

●

For use in Japan 834913-291

●

For use in Latin America 834913-161

●

For use in the Netherlands 834913-B31

●

For use in Russia 834913-251

●

For use in Saudi Arabia 834913-171

●

For use in Spain 834913-071

●

For use in Switzerland 834913-BG1

HP Chromebook models with silver nish:

●

For use in Taiwan 834913-AB1

●

For use in Thailand 834913-281

●

For use in the United Kingdom and Singapore 834913-031

●

For use in the United States 834913-001

●

For use in Belgium 830878-A41

●

For use in Canada 830878-DB1

●

For use in Denmark, Finland, and Norway 830878-DH1

Computer major components 11

Item Component Spare part number

HP Chromebook models with blue nish:

●

For use in France 830878-051

●

For use in Germany 830878-041

●

For use in Italy 830878-061

●

For use in the Netherlands 830878-B31

●

For use in Russia 830878-251

●

For use in Spain 830878-071

●

For use in Switzerland 830878-BG1

●

For use in the United Kingdom and Singapore 830878-031

●

For use in the United States for use only on HP Chromebook 14 PC 830878-001

●

For use in Belgium 830879-A41

●

For use in Canada 830879-DB1

●

For use in Denmark, Finland, and Norway 830879-DH1

●

For use in France 830879-051

●

For use in Germany 830879-041

●

For use in Italy 830879-061

HP Chromebook models with purple nish:

●

For use in the Netherlands 830879-B31

●

For use in Russia 830879-251

●

For use in Spain 830879-071

●

For use in Switzerland 830879-BG1

●

For use in the United Kingdom and Singapore 830879-031

●

For use in the United States 830879-001

●

For use in Belgium 830880-A41

●

For use in Canada 830880-DB1

●

For use in Denmark, Finland, and Norway 830880-DH1

●

For use in France 830880-051

●

For use in Germany 830880-041

●

For use in Italy 830880-061

●

For use in the Netherlands 830880-B31

●

For use in Russia 830880-251

●

For use in Spain 830880-071

●

For use in Switzerland 830880-BG1

●

For use in the United Kingdom and Singapore 830880-031

12 Chapter 3 Illustrated parts catalog

Item Component Spare part number

(5) USB cable 830869-001

(6) Battery (3-cell, 37-WHr, 3.28-AHr, Li-ion) 816609-005

(7) Power connector cable 841638-001

(8) Speakers (includes left and right speakers and cables) 787723-001

(9) USB board (includes cable and double-sided adhesive): 830873-001

(10) Heat sink (includes alcohol pad, thermal tape, and thermal grease) 830871-001

(11) System board (includes alcohol pad, thermal tape, and thermal grease)

For use in all models:

For use in HP Chromebook 14 G4 models:

●

For use in the United States 830880-001

●

System board equipped with a Intel Celeron N2940 processor, 4.0-GB of system memory, and 16-GB of eMMC primary storage

●

System board equipped with a Intel Celeron N2840 processor, 4.0-GB of system memory, and 16-GB of eMMC primary storage

●

System board equipped with a Intel Celeron N2840 processor, 2.0-GB of system memory, and 16-GB of eMMC primary storage

●

System board equipped with a Intel Celeron N2940 processor, 4.0-GB of system memory, and 32-GB of eMMC primary storage

830019-001

830018-001

830017-001

839038-001

(12) WLAN module:

Intel Dual Band Wireless-AC 7260 802.11 ac 2x2 WiFi + BT 4.0 Combo Adapter 784645-005

Intel Dual Band Wireless-N 7260AN 802.11 a/b/g/n 2x2 WiFi + BT 4.0 combo adaptor 784647-005

(13) Base enclosure:

For use in HP Chromebook models:

For use in HP Chromebook 14 G4 models:

●

System board equipped with a Intel Celeron N2940 processor, 2.0-GB of system memory, and 32-GB of eMMC primary storage

●

System board equipped with a Intel Celeron N2940 processor, 2.0-GB of system memory, and 16-GB of eMMC primary storage

●

System board equipped with a Intel Celeron N2840 processor, 4.0-GB of system memory, and 32-GB of eMMC primary storage

●

System board equipped with a Intel Celeron N2840 processor, 2.0-GB of system memory, and 32-GB of eMMC primary storage

●

Silver 830862-001

●

Blue 830863-001

●

Purple 830864-001

●

Silver 834906-001

839037-001

839036-001

839035-001

839034-001

Computer major components 13

Display assembly subcomponents

Item Description Spare part number

(1) Display bezel (includes Mylar)

For use in HP Chromebook 14 G4 models:

For use in HP Chromebook models:

(2) Webcam/microphone module (includes bezel Mylar)

For use in HP Chromebook 14 G4 models 834912-001

For use in HP Chromebook models 830877-001

(3) Display panel (raw) (includes bezel Mylar)

●

Silver 834907-001

●

Silver 830865-001

●

Blue 830866-001

●

Purple 830867-001

14 Chapter 3 Illustrated parts catalog

Item Description Spare part number

For use in models with HD displays 830015-001

For use in models with FHD displays 830016-001

Display Hinge Kit for in HP Chromebook 14 G4 models 834909-001

Display Hinge Kit for in HP Chromebook models 830872-001

(4a) Left hinge

(4b) Right hinge

(5) Antenna cable (includes bezel Mylar)

For use in HP Chromebook 14 G4 models 834904-001

For use in HP Chromebook models 830858-001

(6) Display panel cable (includes bezel Mylar)

For use in HP Chromebook 14 G4 models with HD displays 834908-001

For use in HP Chromebook 14 G4 models with FHD displays 841682-001

For use in HP Chromebook models with HD displays 830868-001

For use in HP Chromebook models with FHD displays 841536-001

(7) Display rear cover (includes bezel Mylar)

For use in HP Chomebook 14 G4 models:

For use in HP Chomebook models:

●

Silver 834905-001

●

Silver 830859-001

●

Blue 830860-001

●

Purple 830861-001

Display assembly subcomponents 15

Rubber Kit

Item Description Spare part number

Rubber Kit for use in HP Chromebook 14 G4 models 834911-001

Rubber Kit for use in HP Chromebook models 830875-001

(1) Oval foot/screw covers

(2) Small foot/screw cover

(3) Large foot/screw cover

Miscellaneous parts

Component Spare part number

AC adapter

65-W HP Smart AC adapter (non-PFC, EM, 4.5-mm) for use on all computer models 714657-001

45-W HP Smart AC adapter (non-PFC, RC, 4.5-mm) for use on all computer models 741727-001

Power cord (3-pin, 1.0-meter, black):

For use in Australia for use on all computer models 755530-011

For use in Denmark for use on all computer models 755530-081

For use in Europe for use on all computer models 755530-021

For use in India for use on all computer models 755530-D61

For use in North America for use on all computer models 755530-001

For use in Switzerland for use on all computer models 755530-111

For use in the United Kingdom and Singapore for use on all computer models 755530-031

Rubber Kit (not illustrated, includes rubber feet/screw covers)

For use in Chromebook 14 G4 models: 834911-001

For use in Chromebook models: 830875-001

16 Chapter 3 Illustrated parts catalog

Component Spare part number

Screw Kit 830876-001

HP HDMI to VGA Adapter 701943-001

RJ-45 to USB adapter 539614-001

Miscellaneous parts 17

4 Removal and replacement preliminary

requirements

Tools required

You will need the following tools to complete the removal and replacement procedures:

●

Flat-bladed screw driver

●

Magnetic screw driver

●

Phillips P0 screw driver

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.

18 Chapter 4 Removal and replacement preliminary requirements

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 they cannot be caught or snagged by parts being removed or replaced. Handle ex 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 drive, shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the computer on, and then shut it down through the operating system.

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 drive, place it in a static-proof bag.

Avoid exposing a drive to products that have magnetic elds, 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 nger 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 aected 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.

Grounding guidelines 19

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 aects the electrostatic voltage levels generated by dierent activities.

CAUTION: A product can be degraded by as little as 700 V.

Typical electrostatic voltage levels

Relative humidity

Event 10% 40% 55%

Walking across carpet 35,000 V 15,000 V 7,500 V

Walking across vinyl oor 12,000 V 5,000 V 3,000 V

Motions of bench worker 6,000 V 800 V 400 V

Removing DIPS from plastic tube 2,000 V 700 V 400 V

Removing DIPS from vinyl tray 11,500 V 4,000 V 2,000 V

Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V

Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V

Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V

20 Chapter 4 Removal and replacement preliminary requirements

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 eld service tools, such as cutters, screw drivers, and vacuums.

●

When xtures must directly contact dissipative surfaces, use xtures 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 o power and input signals before inserting or removing connectors or test equipment.

Grounding guidelines 21

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 exible 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 oor 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 oors or dissipative oor mats, use foot straps on both feet with a minimum of one megohm resistance between the operator and ground. To be

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 computerop workstations with ground cords of one megohm resistance

●

Static-dissipative tables or oor mats with hard ties to the ground

●

Field service kits

eective, the conductive must be worn in contact with the skin.

●

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 oor mats.

Material Use Voltage protection level

Antistatic plastics Bags 1,500 V

Carbon-loaded plastic Floor mats 7,500 V

Metallized laminate Floor mats 5,000 V

22 Chapter 4 Removal and replacement preliminary requirements

5 Removal 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.

NOTE: HP continually improves and changes product parts. For complete and current information on

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions.

Component replacement procedures

There are as many as 48 screws that must be removed, replaced, and/or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement.

Keyboard/top cover

NOTE: The keyboard/top cover spare part kit includes the keyboard cable.

Description Spare part number Description Spare part number

Keyboard/top cover in silver nish for use only on HP Chromebook 14 G4 models:

For use in Belgium 834913-A41 For use in Latin America 834913-161

For use in Canada 834913-DB1 For use in the Netherlands 834913-B31

For use in the Czech Republic and Slovakia

For use in Denmark, Finland, and Norway

For use in France 834913-051 For use in Spain 834913-071

For use in Germany 834913-041 For use in Switzerland 834913-BG1

For use in India 834913-D61 For use in Taiwan 834913-AB1

For use in Israel 834913-BB1 For use in Thailand 834913-281

For use in Italy 834913-061 For use in the United Kingdom

For use in Japan 834913-291 For use in the United States 834913-001

Keyboard/top cover in silver nish for use only on HP Chromebook models:

For use in Belgium 830878-A41 For use in the Netherlands 830878-B31

For use in Canada 830878-DB1 For use in Russia 830878-251

For use in Denmark, Finland, and Norway

834913-FL1 For use in Russia 834913-251

834913-DH1 For use in Saudi Arabia 834913-171

834913-031

and Singapore

830878-DH1 For use in Spain 830878-071

For use in France 830878-051 For use in Switzerland 830878-BG1

Component replacement procedures 23

Description Spare part number Description Spare part number

For use in Germany 830878-041 For use in the United Kingdom

and Singapore

For use in Italy 830878-061 For use in the United States 830878-001

Keyboard/top cover in blue nish for use only on HP Chromebook models:

For use in Belgium 830879-A41 For use in the Netherlands 830879-B31

For use in Canada 830879-DB1 For use in Russia 830879-251

For use in Denmark, Finland, and Norway

For use in France 830879-051 For use in Switzerland 830879-BG1

For use in Germany 830879-041 For use in the United Kingdom

For use in Italy 830879-061 For use in the United States 830879-001

Keyboard/top cover in purple nish for use only on HP Chromebook models:

For use in Belgium 830880-A41 For use in the Netherlands 830880-B31

For use in Canada 830880-DB1 For use in Russia 830880-251

For use in Denmark, Finland, and Norway

For use in France 830880-051 For use in Switzerland 830880-BG1

830879-DH1 For use in Spain 830879-071

and Singapore

830880-DH1 For use in Spain 830880-071

830878-031

830879-031

For use in Germany 830880-041 For use in the United Kingdom

and Singapore

For use in Italy 830880-061 For use in the United States 830880-001

830880-031

Before removing the disassembling the computer, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

NOTE: When replacing the keyboard/top cover, be sure that the heat sink (see Heat sink on page 33) and

TouchPad (see TouchPad on page 27) are removed from the defective keyboard/top cover and installed on the replacement keyboard/top cover.

Remove the keyboard/top cover:

1. Close the computer.

2. Position the computer upside down with the front toward you.

3. Remove the two larger rubber feet/screw covers (1).

4. Remove the two oval rubber feet/screw covers (2).

24 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

5. Remove the middle smaller rubber foot/screw cover (3).

NOTE: The feet/screw covers are included in the Rubber Kit, spare part number 834911-001 for use

only on HP Chromebook 14 G4 models and 830875-001 for use only on HP Chromebook models.

6. Remove the 13 Phillips PM2.0×5.0 screws that secure the keyboard/top cover to the base enclosure.

7. Turn the computer right side up with the front toward you.

8. Open the computer as far as it will open.

9. Lift the front edge (1) of the keyboard/top cover until it separates from the front edge of the

base enclosure.

10. Lift the tape (2) that secures the keyboard cable.

Component replacement procedures 25

11. Release the zero insertion force (ZIF) connector (3) to which the keyboard cable is attached, and then

disconnect the keyboard cable (4) from the system board.

12. Release the ZIF connector (5) to which the TouchPad cable is attached, and then disconnect the

TouchPad cable (6) from the system board.

13. Remove keyboard/top cover (7) by sliding it forward.

Reverse this procedure to install the keyboard/top cover.

26 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

TouchPad

Before removing the TouchPad, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

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 keyboard/top cover (see Keyboard/top cover on page 23).

Remove the TouchPad button board:

1. Position the keyboard/top cover upside down with the front toward you.

Description Spare part number

TouchPad for use in HP Chromebook 14 G4 models (includes gasket) 830874-001

TouchPad for use in silver HP Chromebook models (includes gasket) 830874-001

TouchPad for use in blue HP Chromebook models (includes gasket) 835047-001

TouchPad for use in purple HP Chromebook models (includes gasket) 835048-001

Touchpad cable 830870-001

computer on, and then shut it down through the operating system.

2. Detach the TouchPad cable (1) from the keyboard/top cover. (The TouchPad cable is attached to the

keyboard/top cover with double-sided adhesive.)

3. Remove the two Phillips PM2.0×2.0 broad head screws (2) that secure the TouchPad to the

keyboard/top cover.

4. Release the TouchPad (3) by pressing it through the opening in the keyboard/top cover.

Component replacement procedures 27

5. Remove the TouchPad (4).

Reverse this procedure to install the TouchPad.

28 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

Power connector cable

Description Spare part number

Power connector cable 841638-001

Before removing the power connector cable, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

4. Remove the keyboard/top cover (see Keyboard/top cover on page 23).

5. Disconnect the battery cable from the system board (see Battery on page 42).

Remove the power connector cable:

1. Disconnect the cable (1) from the system board.

2. Release the cable from the routing clips (2) built into the base enclosure.

3. Remove the power connector cable (3).

Reverse this procedure to install the power connector cable.

Component replacement procedures 29

USB board

Description Spare part number

USB board 830873-001

USB board cable 830869-001

Before removing the USB board, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

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 keyboard/top cover (see Keyboard/top cover on page 23).

5. Disconnect the battery cable from the system board (see Battery on page 42).

Remove the USB board:

1. Release the ZIF connector (1) to which the USB board ribbon cable is attached, and then disconnect the

2. Remove the two Philllips PM2.0×2.0 broad head screws (2) that secure the USB board to the

computer on, and then shut it down through the operating system.

cable from the USB board.

base enclosure.

3. Remove the USB board (3).

Reverse this procedure to install the USB board.

30 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

WLAN/Bluetooth combo card

The computer uses a card that provides both WLAN and Bluetooth functionality.

Description Spare part number

Intel Dual Band Wireless-AC 7260 802.11 ac 2x2 WiFi + BT 4.0 Combo Adapter 784645-005

Intel Dual Band Wireless-N 7260AN 802.11 a/b/g/n 2x2 WiFi + BT 4.0 combo adaptor 784647-005

Before removing the WLAN module, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

4. Remove the keyboard/top cover (see Keyboard/top cover on page 23).

5. Disconnect the battery cable from the system board (see Battery on page 42).

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 Phillips PM2.0×4.0 screw (2) that secures the WLAN module to the computer. (The edge of

the module opposite the slot rises away from the computer.)

Component replacement procedures 31

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.

32 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

Heat sink

Before removing the heat sink, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

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 keyboard/top cover (see Keyboard/top cover on page 23).

5. Disconnect the battery cable from the system board (see Battery on page 42).

Remove the heat sink:

1. Remove the two Phillips PM2.0×2.0 screws (1) that secure the heat sink to the system board.

Description Spare part number

Heat sink (includes alcohol pad, thermal tape, and thermal grease) 830871-001

computer on, and then shut it down through the operating system.

Component replacement procedures 33

2. Remove the heat sink (2).

NOTE: The thermal material must be thoroughly cleaned from the surfaces of the system board and

the heat sink components each time the heat sink is removed. Thermal paste is used on the processor (1) and the heat sink section (2) that services it.

Reverse this procedure to install the heat sink.

34 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

Display assembly

Before removing the display assembly, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

4. Remove the keyboard/top cover (see Keyboard/top cover on page 23).

5. Disconnect the battery cable from the system board (see Battery on page 42).

Remove the display assembly:

1. Release the ZIF connector (1) to which the display panel cable is attached, and then disconnect the

display panel cable from the system board.

2. Disconnect the wireless antenna cables (2) from the WLAN terminals on the system board and WLAN

terminals on the WLAN module.

NOTE: The white WLAN antenna cable labeled “1/Main” connects to the system board “Main” terminal.

The black WLAN antenna cable labeled “2/Aux” connects to the system board “Aux” terminal.

3. Remove the two Phillips 2.0×4.0 screws (3) that secure the display assembly to the base enclosure.

4. Remove the display assembly (4).

5. If it is necessary to replace the display enclosure or any of the display assembly subcomponents:

a. Remove the two display bezel screw covers (1).

b. Remove the two Phillips PM2.0×2.0 broad head screws (2) that secure the display enclosure to the

display panel assembly.

Component replacement procedures 35

c. Using a at plastic tool, separate the top edge of the display bezel from the enclosure (3), then the

left and right sides (4), and then the bottom (5). Remove the bezel from the display enclosure (6).

NOTE: When lifting the bezel, make sure the mylar between the bezel and panel does not pull

free from the panel.

The display bezel is available using the following spare part numbers:

●

834907-001–For use on HP Chromebook 14 G4 models

●

830865-001–For use on silver HP Chromebook models

●

830866-001–For use on blue HP Chromebook models

●

830867-001–For use on purple HP Chromebook models

6. If it is necessary to replace the webcam/microphone module:

a. Detach the webcam/microphone module (1) from the display enclosure. (The webcam/microphone

module is attached to the display enclosure with double-sided adhesive at two locations.)

36 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

b. Disconnect the webcam/microphone module cable (2) from the webcam/microphone module.

c. Remove the webcam/microphone module.

The webcam/microphone module is available using spare part number 834912-001 for use on HP Chromebook 14 G4 models or 830877-001 for use on HP Chromebook models.

7. If it is necessary to replace the display panel:

a. Remove the four Phillips PM2.0×3.0 screws (1) that secure the display panel to the

display enclosure.

CAUTION: Before turning the display panel upside down, make sure the work surface is clear of

tools, screws, and any other foreign objects. Failure to follow this caution can result in damage to the display panel.

Component replacement procedures 37

b. Lift the top edge of the display panel (2) and swing it up and forward until it rests upside down in

front of the display enclosure.

The raw display panel is available using spare part number 830015-001 for HD displays and 830016-001 for FHD displays.

c. Release the adhesive strip (1) that secures the display panel cable connector to the display panel.

d. Disconnect the display panel cable (2) from the display panel.

e. Remove the display panel (3).

8. If it is necessary to replace the display hinges:

38 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

a. Remove the following screws that secure the display hinges and display hinge support brackets to

the display enclosure:

(1) Two Phillips PM2.0×3.0 screws that secure the display hinge brackets

(2) Four Phillips PM2.5×3.0 broad head screws that secure the display hinges

(3) Two Phillips PM2.0×2.0 screws that secure the display hinges

b. Remove the display hinges (4).

The display hinges are included in the Display Hinge Kit, spare part number 834909-001 for use on HP Chromebook 14 G4 models or 830872-001 on HP Chromebook models.

9. If it is necessary to replace the display panel cable:

a. Disconnect the display panel cable from the webcam/microphone module (1).

b. Release the display panel cable from the retention clips (2) and channel built into the top, left, and

bottom edges of the display enclosure.

c. Remove the display panel cable (3).

The display panel cable is available using the following spare part numbers:

●

834908-001–For use on HP Chromebook 14 G4 models with HD displays

●

841682-001–For use on silver HP Chromebook models with FHD displays

●

830868-001–For use on blue HP Chromebook models with HD displays

●

841536-001–For use on purple HP Chromebook models with FHD displays

Component replacement procedures 39

10. If it is necessary to replace the antenna cable:

a. Peel to remove the transceivers from the top of the display enclosure (1).

b. Release the cable from the retention clips (2) and channel built into the side of the

display enclosure.

c. Remove the antenna cable (3).

The antenna cable is available using spare part number 834904-001 for HP Chromebook 14 G4 models and 830858-001 for HP Chromebook models.

The display rear cover is available using the following spare part numbers:

40 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

●

834905-001–For use on HP Chromebook 14 G4 models

●

830859-001–For use on silver HP Chromebook models

●

830860-001–For use on blue HP Chromebook models

●

830861-001–For use on purple HP Chromebook models

Reverse this procedure to reassemble and install the display assembly.

Component replacement procedures 41

Battery

Description Spare part number

Battery, 3-cell, 37-WHr, 3.28-AHr, Li-ion 816609-005

Before removing the battery, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

4. Remove the keyboard/top cover (see Keyboard/top cover on page 23).

Remove the battery:

1. Disconnect the battery cable from the system board.

2. Remove the eight Phillips PM2.0×3.0 screws (1) that secure the battery to the base enclosure.

42 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

3. Lift the battery from the computer (2).

Reverse this procedure to install the battery.

Component replacement procedures 43

Speakers

Before removing the speakers, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

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 keyboard/top cover (see Keyboard/top cover on page 23).

5. Remove the battery (see Battery on page 42).

Remove the speakers:

1. Disconnect the speaker cable (1) from the system board.

2. Disengage each speaker from the computer by using a tool to pry up near the tabs of each speaker (2).

3. Remove the tape (3), and then release the speaker cables from the routing clips (4) and channels built

Description Spare part number

Speakers (include left and right speakers and cables) 787723-001

computer on, and then shut it down through the operating system.

into the base enclosure.

4. Remove the speakers (5).

Reverse this procedure to install the speakers.

44 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

System board

Description Spare part number

System board for use in all models (includes alcohol pad, thermal tape, and thermal grease):

Equipped with a Intel Celeron N2940 processor, 4.0-GB of system memory, and 16-GB of eMMC primary storage 830019-001

Equipped with a Intel Celeron N2840 processor, 4.0-GB of system memory, and 16-GB of eMMC primary storage 830018-001

Equipped with a Intel Celeron N2840 processor, 2.0-GB of system memory, and 16-GB of eMMC primary storage 830017-001

System board for use in HP Chromebook 14 G4 models (includes alcohol pad, thermal tape, and thermal grease):

Equipped with a Intel Celeron N2940 processor, 4.0-GB of system memory, and 32-GB of eMMC primary storage 839038-001

Equipped with a Intel Celeron N2940 processor, 2.0-GB of system memory, and 32-GB of eMMC primary storage 839037-001

Equipped with a Intel Celeron N2940 processor, 2.0-GB of system memory, and 16-GB of eMMC primary storage 839036-001

Equipped with a Intel Celeron N2840 processor, 4.0-GB of system memory, and 32-GB of eMMC primary storage 839035-001

Equipped with a Intel Celeron N2840 processor, 2.0-GB of system memory, and 32-GB of eMMC primary storage 839034-001

Before removing the system board, follow these steps:

1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the

computer on, and then shut it down through the operating system.

2. Disconnect the power from the computer by unplugging the power cord from the computer.

3. Disconnect all external devices from the computer.

4. Remove the keyboard/top cover (see Keyboard/top cover on page 23).

5. Remove the battery (see Battery on page 42).

Remove the system board:

1. Disconnect the speaker cable (1) from the system board.

2. Release the ZIF connector (2) to which the display panel cable is attached, and then disconnect the

display panel cable from the system board.

3. Release the ZIF connector (3) to which the connector board cable is attached, and then disconnect the

connector board cable from the system board.

Component replacement procedures 45

4. Disconnect the power connector cable (4) from the system board.

5. Remove the four Philllips PM2.0×2.0 screws (1) that secure the system board to the base enclosure.

6. Lift the right side of the system board (2) until it rests at an angle.

7. Remove the system board (3) by sliding it up and to the right at an angle.

Reverse this procedure to install the system board.

46 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

6 Specications

Metric U.S.

Computer dimensions

Width 34.4 cm 13.5 in

Depth 24.0 cm 9.5 in

Height 1.8 cm 0.7 in

Weight 1.7 kg 3.8 lbs

Operating voltage and current: 19.5V dc @ 2.31 A – 45 W

NOTE: This product is designed for IT power systems in Norway with phase-to-phase voltage not exceeding 240 V rms.

NOTE: The device operating voltage and current can be found on the system regulatory label.

Temperature

Operating 5°C to 35°C 41°F to 95°F

Nonoperating ‑20°C to 60°C ‑4°F to 140°F

19.5V dc @ 3.33 A – 65 W

Relative humidity (noncondensing)

Operating 10% to 90%

Nonoperating 5% to 95%

Maximum altitude (unpressurized)

Operating ‑15 m to 3,048 m ‑50 ft to 10,000 ft

Nonoperating ‑15 m to 12,192 m ‑50 ft to 40,000 ft

NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. The device operates well within this range of

temperatures.

7 Using HP PC Hardware Diagnostics (UEFI)

HP PC Hardware Diagnostics is a Unied Extensible Firmware Interface (UEFI) that allows you to run diagnostic tests to determine whether the computer hardware is functioning properly. The tool runs outside the operating system so that it can isolate hardware failures from issues that are caused by the operating system or other software components.

When HP PC Hardware Diagnostics (UEFI) detects a failure that requires hardware replacement, a 24-digit Failure ID code is generated. This ID code can then be provided to support to help determine how to correct the problem.

NOTE: To start diagnostics on a convertible computer, your computer must be in notebook mode and you

must use the keyboard attached.

To start HP PC Hardware Diagnostics (UEFI), follow these steps:

1. Turn on or restart the computer, and quickly press esc.

2. Press f2.

The BIOS searches three places for the diagnostic tools, in the following order:

a. Connected USB drive

NOTE: To download the HP PC Hardware Diagnostics (UEFI) tool to a USB drive, see Downloading

HP PC Hardware Diagnostics (UEFI) to a USB device on page 48.

b. Hard drive

c. BIOS

3. When the diagnostic tool opens, select the type of diagnostic test you want to run, and then follow the

on-screen instructions.

NOTE: If you need to stop a diagnostic test, press esc.

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device

NOTE: The HP PC Hardware Diagnostics (UEFI) download instructions are provided in English only, and you

must use a Windows computer to download and create the HP UEFI support environment because only .exe les are oered.

There are two options to download HP PC Hardware Diagnostics to a USB device.

Download the latest UEFI version

1. Go to http://www.hp.com/go/techcenter/pcdiags. The HP PC Diagnostics home page is displayed.

2. In the HP PC Hardware Diagnostics section, click the Download link, and then select Run.

Download any version of UEFI for a specic product

1. Go to http://www.hp.com/support, and then select your country. The HP Support page is displayed.

2. Click Drivers & Downloads.

48 Chapter 7 Using HP PC Hardware Diagnostics (UEFI)

3. Use the categories listed to nd your product.

– or –

Click Find Now to let HP automatically detect your product.

4. Select your computer, and then select your operating system.

5. In the Diagnostic section, follow the on-screen instructions to select and download the UEFI version

you want.

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device 49

8 Power cord set requirements

The wide-range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC, or from 220 to 240 volts AC.

The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the equipment is purchased.

Power cord sets for use in other countries and regions must meet the requirements of the country or region where the computer is used.

Requirements for all countries

The following requirements are applicable to all countries and regions:

●

The length of the power cord set must be at least 1.0 m (3.3 ft) and no more than 2.0 m (6.5 ft).

●

All power cord sets must be approved by an acceptable accredited agency responsible for evaluation in the country or region where the power cord set will be used.

●

The power cord sets must have a minimum current capacity of 10 amps and a nominal voltage rating of 125 or 250 V AC, as required by the power system of each country or region.

●

The appliance coupler must meet the mechanical conguration of an EN 60 320/IEC 320 Standard Sheet C13 connector for mating with the appliance inlet on the back of the computer. Requirements for all countries 113

Requirements for specic countries and regions

Country/region Accredited agency Applicable note number

Australia EANSW 1

Austria OVE 1

Belgium CEBC 1

Canada CSA 2

Denmark DEMKO 1

Finland FIMKO 1

France UTE 1

Germany VDE 1

Italy IMQ 1

Japan METI 3

The Netherlands KEMA 1

Norway NEMKO 1

The People's Republic of China COC 5

50 Chapter 8 Power cord set requirements

Country/region Accredited agency Applicable note number

South Korea EK 4

Sweden CEMKO 1

Switzerland SEV 1

Taiwan BSMI 4

The United Kingdom BSI 1

The United States UL 2

1. The exible cord must be Type HO5VV-F, 3-conductor, 1.0-mm² conductor size. Power cord set ttings (appliance coupler and

wall plug) must bear the certication mark of the agency responsible for evaluation in the country or region where it will be used.

2. The exible cord must be Type SPT-3 or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type

with a NEMA 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V) conguration.

3. The appliance coupler, exible cord, and wall plug must bear a “T” mark and registration number in accordance with the Japanese

Dentori Law. The exible cord must be Type VCT or VCTF, 3-conductor, 1.00-mm² conductor size. The wall plug must be a twopole grounding type with a Japanese Industrial Standard C8303 (7 A, 125 V) conguration.

4. The exible cord must be Type RVV, 3-conductor, 0.75-mm² conductor size. Power cord set ttings (appliance coupler and wall

plug) must bear the certication mark of the agency responsible for evaluation in the country or region where it will be used.

5. The exible cord must be Type VCTF, 3-conductor, 0.75-mm² conductor size. Power cord set ttings (appliance coupler and wall

plug) must bear the certication mark of the agency responsible for evaluation in the country or region where it will be used.

Requirements for specic countries and regions 51

9 Statement of memory volatility

The purpose of this chapter is to provide general information regarding nonvolatile memory in HP Business PCs. This chapter also provides general instructions for restoring nonvolatile memory that can contain personal data after the system has been powered o and the hard drive has been removed.

HP Business PC products that use Intel®-based or AMD®-based system boards contain volatile DDR memory. The amount of nonvolatile memory present in the system depends upon the system based and AMD-based system boards contain nonvolatile memory subcomponents as originally shipped from HP, assuming that no subsequent modications have been made to the system and assuming that no applications, features, or functionality have been added to or installed on the system.

Following system shutdown and removal of all power sources from an HP Business PC system, personal data can remain on volatile system memory (DIMMs) for a nite period of time and will also remain in nonvolatile memory. Use the steps below to remove personal data from the PC, including the nonvolatile memory found in Intel-based and AMD-based system boards.

NOTE: If your tablet has a keyboard base, connect to the keyboard base before beginning steps in this

chapter.

Current BIOS steps

1. Follow steps (a) through (l) below to restore the nonvolatile memory that can contain personal data.

Restoring or reprogramming nonvolatile memory that does not store personal data is neither necessary nor recommended.

conguration. Intel-

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

message is displayed at the bottom of the screen.

IMPORTANT: If the Main menu displays Restore Defaults instead of Apply Factory Defaults and

Exit, go to Legacy BIOS Steps on page 53.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

b. Select Main, select Apply Factory Defaults and Exit, and then select Yes to load defaults.

The computer will reboot.

c. During the reboot, press esc while the “Press the ESC key for Startup Menu” message is displayed

at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

d. Select the Security menu, select Restore Security Settings to Factory Defaults, and then select

Yes to restore security level defaults.

The computer will reboot.

e. During the reboot, press esc while the “Press the ESC key for Startup Menu” message is displayed

at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

f. If an asset or ownership tag is set, select the Security menu and scroll down to the Utilities menu.

Select System IDs, and then select Asset Tracking Number. Clear the tag, and then make the selection to return to the prior menu.

52 Chapter 9 Statement of memory volatility

g. If a DriveLock password is set, select the Security menu, and scroll down to Hard Drive Utilities

under the Utilities menu. Select Hard Drive Utilities, select DriveLock, then uncheck the checkbox for DriveLock password on restart. Select OK to proceed.

h. Select the Main menu, and then select Reset BIOS Security to factory default. Click Yes at the

warning message.

The computer will reboot.

i. During the reboot, press esc while the “Press the ESC key for Startup Menu” message is displayed

at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

j. Select the Main menu, select Apply Factory Defaults and Exit, select Yes to save changes and exit,

and then select Shutdown.

k. Reboot the system. If the system has a Trusted Platform Module (TPM) and/or ngerprint reader,

one or two prompts will appear—one to clear the TPM and the other to Reset Fingerprint Sensor; press or tap F1 to accept or F2 to reject.

l. Remove all power and system batteries for at least 24 hours.

2. Complete one of the following:

●

Remove and retain the storage drive.

– or –

●

– or –

●

IMPORTANT: If you clear data using Secure Erase, it cannot be recovered.

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

b. Select the Security menu and scroll down to the Utilities menu.

c. Select Hard Drive Tools.

d. Under Utilities, select Secure Erase, select the hard drive storing the data you want to clear, and

Legacy BIOS Steps

Use the steps for older versions of BIOS.

NOTE: If you already completed the steps in Current BIOS steps on page 52, skip this section.

1. Follow steps (a) through (i) below to restore the nonvolatile memory that can contain personal data.

Restoring or reprogramming nonvolatile memory that does not store personal data is neither necessary nor recommended.

Clear the drive contents by using a third party utility designed to erase data from an SSD.

Clear the contents of the drive by using the following BIOS Setup Secure Erase command option steps:

message is displayed at the bottom of the screen.

then follow the on-screen instructions to continue.

NOTE: If you have not already done so, access the BIOS menu.

●

Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu” message is displayed at the bottom of the screen.

NOTE: If the system has a BIOS administrator password, enter the password at the prompt.

a. Select Main, select Restore Defaults, and then select Yes to load defaults.

b. Select the Security menu, select Restore Security Level Defaults, and then select Yes to restore

security level defaults.

c. If an asset or ownership tag is set, select the Security menu and scroll down to the Utilities menu.

Select System IDs, and then select Asset Tracking Number. Clear the tag, and then make the selection to return to the prior menu.

d. If a DriveLock password is set, select the Security menu, and scroll down to Hard Drive Tools

under the Utilities menu. Select Hard Drive Tools, select DriveLock, then uncheck the checkbox for DriveLock password on restart. Select OK to proceed.

e. If an Automatic DriveLock password is set, select the Security menu, scroll down to Hard Drive

Tools under the Utilities menu. Select Hard Drive Tools, scroll down to Automatic DriveLock, then

select the desired hard drive and disable protection. At the automatic drive lock warning screen, select Yes to continue. Repeat this procedure if more than one hard drive has an Automatic DriveLock password.

f. Select the Main menu, and then select Reset BIOS Security to factory default. Click Yes at the

warning message.

g. Select the Main menu, select Save Changes and Exit, select Yes to save changes and exit, and then

select Shutdown.

h. Reboot the system. If the system has a Trusted Platform Module (TPM) and/or ngerprint reader,

one or two prompts will appear—one to clear the TPM and the other to Reset Fingerprint Sensor; press or tap F1 to accept or F2 to reject.

i. Remove all power and system batteries for at least 24 hours.

2. Complete one of the following:

●

Remove and retain the storage drive.

– or –

●

Clear the drive contents by using a third party utility designed to erase data from an SSD.

– or –

●

Clear the contents of the drive by using the following BIOS Setup Secure Erase command option steps:

IMPORTANT: If you clear data using Secure Erase, it cannot be recovered.

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

message is displayed at the bottom of the screen.

b. Select the Security menu and scroll down to the Utilities menu.

c. Select Hard Drive Tools.

d. Under Utilities, select Secure Erase, select the hard drive storing the data you want to clear, and

then follow the on-screen instructions to continue.

– or –

●

Clear the contents of the drive by using the following Disk Sanitizer command steps:

IMPORTANT: If you clear data using Disk Sanitizer, it cannot be recovered.

54 Chapter 9 Statement of memory volatility

NOTE: The amount of time it takes for Disk Sanitizer to run can take several hours. Plug the computer

into an AC outlet before starting.

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

message is displayed at the bottom of the screen.

b. Select the Security menu and scroll down to the Utilities menu.

c. Select Hard Drive Tools.

d. Under Utilities, select Disk Sanitizer, select the hard drive storing the data you want to clear, and

then follow the on-screen instructions to continue.

Nonvolatile memory usage

Nonvolatile Memory Type

HP Sure Start ash (select models only)

Real Time Clock (RTC) battery backed-up CMOS conguration memory

Amount (Size) Does this

memory store customer data?

2 MBytes No Yes Provides

256 Bytes No Yes Stores system

Does this memory retain data when power is removed?

What is the purpose of this memory?

protected backup of critical System BIOS code, EC rmware, and critical PC conguration data for select platforms that support HP Sure Start.

For more information, see Using HP

Sure Start (select models only) on page 59.

date and time and noncritical data.

How is data input into this memory?

Data cannot be written to this device via the host processor. The content is managed solely by the HP Sure Start Embedded Controller.

RTC battery backed-up CMOS is programmed using the Computer Setup (BIOS), or changing the Microsoft Windows date & time.

How is this memory write-protected?

This memory is protected by the HP Sure Start Embedded Controller.

This memory is not writeprotected.

Controller (NIC) EEPROM

DIMM Serial Presence Detect (SPD) conguration data

System BIOS 4 MBytes to 5

64 KBytes (not customer accessible)

256 Bytes per memory module, 128 Bytes programmable (not customer accessible)

MBytes

No Yes Stores NIC

conguration and NIC

rmware.

No Yes Stores memory

module information.

Yes Yes Stores system

BIOS code and PC conguration data.

NIC EEPROM is programmed using a utility from the NIC vendor that can be run from DOS.

DIMM SPD is programmed by the memory vendor.

System BIOS code is programmed at the factory. Code is updated when the system BIOS is updated. Conguration data and settings are input using the Computer Setup (BIOS) or a custom utility.

A utility is required to write data to this memory and is available from the NIC vendor. Writing data to this ROM in an inappropriate manner will render the NIC nonfunctional.

Data cannot be written to this memory when the module is installed in a PC. The specic writeprotection method varies by memory vendor.

NOTE: Writing data to

this ROM in an inappropriate manner can render the PC nonfunctional.

A utility is required for writing data to this memory and is available on the HP website; go to

http://www.hp.com/ support, and select your

country. Select Drivers &

56 Chapter 9 Statement of memory volatility

Nonvolatile Memory Type

Amount (Size) Does this

memory store customer data?

Does this memory retain data when power is removed?

What is the purpose of this memory?

How is data input into this memory?

How is this memory write-protected?

Downloads, and then

follow the on-screen instructions.

Intel Management Engine Firmware (present in only specic ZBook and EliteBook models. For more information, go to

http://www.hp.com/ support, and

select your country. Select

Drivers & Downloads, and

then follow the on-screen instructions.)

Bluetooth ash 2 Mbit No Yes Stores

802.11 WLAN EEPROM

1.5 MBytes or 5 MBytes

4 Kbit to 8 Kbit No Yes Stores

Yes Yes Stores

Management Engine Code, Settings, Provisioning Data and iAMT third-party data store.

Bluetooth conguration and rmware.

conguration and calibration data.

Management Engine Code is programmed at the factory. Code is updated via Intel secure rmware update utility. Unique Provisioning Data can be entered at the factory or by an administrator using the Management Engine (MEBx) setup utility. The third party data store contents can be populated by a remote management console or local applications that have been registered by an administrator to have access to the space.

Bluetooth ash is programmed at the factory. Tools for writing data to this memory are not publicly available but can be obtained from the silicon vendor.

802.11 WLAN EEPROM is programmed at the factory. Tools for writing data to this memory are not made public.

The Intel chipset is congured to enforce hardware protection to block all direct read/write access to this area. An Intel utility is required for updating the rmware. Only rmware updates digitally signed by Intel can be applied using this utility.

A utility is required for writing data to this memory and is made available through newer versions of the driver whenever the ash requires an upgrade.

A utility is required for writing data to this memory and is typically not made available to the public unless a rmware upgrade is necessary to address a unique issue.

Web camera 64 Kbit No Yes Stores webcam

conguration and rmware.

Fingerprint reader 512 KByte ash Yes Yes Stores

ngerprint templates.

Webcam memory is programmed using a utility from the device manufacturer that can be run from Windows.

Fingerprint reader memory is programmed by user enrollment in HP ProtectTools Security Manager.

Nonvolatile memory usage 57

A utility is required for writing data to this memory and is typically not made available to the public unless a rmware upgrade is necessary to address a unique issue.

Only a digitally signed application can make the call to write to the ash.

Questions and answers

1. How can the BIOS settings be restored (returned to factory settings)?

IMPORTANT: Restore defaults does not securely erase any data on your hard drive. See question and

answer 6 for steps to securely erase data.

Restore defaults does not reset the Custom Secure Boot keys. See question and answer 7 for information about resetting the keys.

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

message is displayed at the bottom of the screen.

b. Select Main, and then select Restore defaults.

c. Follow the on-screen instructions.

d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions.

2. What is a UEFI BIOS, and how is it dierent from a legacy BIOS?

The Unied Extensible Firmware Interface (UEFI) BIOS is an industry-standard software interface between the platform rmware and an operating system (OS). It is a replacement for the older BIOS architecture, but supports much of the legacy BIOS functionality.

Like the legacy BIOS, the UEFI BIOS provides an interface to display the system information and conguration settings and to change the conguration of your computer before an OS is loaded. BIOS provides a secure run-time environment that supports a Graphic User Interface (GUI). In this environment, you can use either a pointing device (Touchscreen, TouchPad, pointing stick, or USB mouse) or the keyboard to navigate and make menu and conguration selections. The UEFI BIOS also contains basic system diagnostics.

The UEFI BIOS provides functionality beyond that of the legacy BIOS. In addition, the UEFI BIOS works to initialize the computer’s hardware before loading and executing the OS; the run-time environment allows the loading and execution of software programs from storage devices to provide more functionality, such as advanced hardware diagnostics (with the ability to display more detailed system information) and advanced rmware management and recovery software.

HP has provided options in Computer Setup (BIOS) to allow you to run in legacy BIOS, if required by the operating system. Examples of this requirement would be if you upgrade or downgrade the OS.

3. Where does the UEFI BIOS reside?

The UEFI BIOS resides on a ash memory chip. A utility is required to write to the chip.

4. What kind of conguration data is stored on the DIMM Serial Presence Detect (SPD) memory

module? How would this data be written?

The DIMM SPD memory contains information about the memory module, such as size, serial number, data width, speed/timing, voltage, and thermal information. This information is written by the module manufacturer and stored on an EEPROM. This EEPROM cannot be written to when the memory module is installed in a PC. Third-party tools do exist that can write to the EEPROM when the memory module is not installed in a PC. Various third-party tools are available to read SPD memory.

5. What is meant by “Restore the nonvolatile memory found in Intel-based system boards”?

This message relates to clearing the Real Time Clock (RTC) CMOS memory that contains PC conguration data.

6. How can the BIOS security be reset to factory defaults and data erased?

58 Chapter 9 Statement of memory volatility

IMPORTANT: Resetting will result in the loss of information.

These steps will not reset Custom Secure Boot Keys. See question and answer 7 for information about resetting the keys.

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

message is displayed at the bottom of the screen.

b. Select Main, and then select Reset BIOS Security to Factory Default.

c. Follow the on-screen instructions.

d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions.

7. How can the Custom Secure Boot Keys be reset?

Secure Boot is a feature to ensure that only authenticated code can start on a platform. If you enabled Secure Boot and created Custom Secure Boot Keys, simply disabling Secure Boot will not clear the keys. You must also select to clear the Custom Secure Boot Keys. Use the same Secure Boot access procedure you used to create the Custom Secure Boot Keys, but make the selection to clear or delete all Secure Boot Keys.

a. Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup Menu”

message is displayed at the bottom of the screen.

b. Select the Security menu, select Secure Boot Conguration, and then follow the on-screen

instructions.

c. At the Secure Boot Conguration window, select Secure Boot, select Clear Secure Boot Keys, and

then follow the on-screen instructions to continue.

Using HP Sure Start (select models only)

Select computer models are congured with HP Sure Start, a technology that continuously monitors your computer's BIOS for attacks or corruption. If the BIOS becomes corrupted or is attacked, HP Sure Start restores the BIOS to its previously safe state, without user intervention. Those select computer models ship with HP Sure Start congured and enabled. HP Sure Start is congured and already enabled so that most users can use the HP Sure Start default conguration. The default conguration can be customized by advanced users.

To access the latest documentation on HP Sure Start, go to http://www.hp.com/support, and select your country. Select Drivers & Downloads, and then follow the on-screen instructions.

Using HP Sure Start (select models only) 59

10 Recycling

When a non-rechargeable or rechargeable battery has reached the end of its useful life, do not dispose of the battery in general household waste. Follow the local laws and regulations in your area for battery disposal.

HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, see the HP Web site at http://www.hp.com/recycle.

60 Chapter 10 Recycling

Index

AC adapter light

identifying 5 AC adapter, spare part numbers 16 antenna cable

spare part numbers 15, 40 antennas

disconnecting 31 audio, product description 1 audio-in (microphone) jack,

identifying

audio-out (headphone) jack,

identifying 4

base enclosure, spare part

numbers 13

battery

removal 42

spare part number 13, 42 battery bay 9 Bluetooth card

spare part number 31 buttons

power 7

cables, service considerations 19 chipset, product description 1 components

bottom 8

display 3

left side 4

right side 5

top 6 computer major components 10 connector, power 5 connectors, service considerations

display assembly

removal 35 display bezel

spare part numbers 36

display bezel, spare part numbers

display enclosure

removal 35 spare part numbers 14

Display Hinge Kit, spare part

numbers 15, 39

display panel

product description 1 removal 37 spare part numbers 39

display panel cable

removal 39, 40 spare part numbers 15

display rear cover, spare part

numbers 15

drives

precautions 19 preventing damage 19

electrostatic discharge 19 equipment guidelines 22 external media cards, product

description 1

feet

removal 25 spare part number 25

graphics, product description 1 grounding guidelines 19 guidelines

equipment 22 grounding 19 packaging 21 transporting 21 workstation 21

headphone (audio-out) jack 4

heat sink

removal 33 spare part number 13, 33

hinge

removal 38 spare part numbers 15, 39

HP PC Hardware Diagnostics (UEFI)

using 48

HP Sure Start 59

integrated webcam light,

identifying 3

internal microphones, identifying 3

jacks

audio-in (microphone) 4 audio-out (headphone) 4

keyboard/top cover

removal 23 spare part numbers 11, 23

labels 9

regulatory 9 service 9 wireless certication 9 WLAN 9

lights

AC adapter 5 power 4 webcam 3

memory

nonvolatile 52

volatile 52 memory card reader, identifying 4 memory card, identifying 4 memory, product description 1 microphone

product description 1

Index 61

microphone (audio-in) jack,

identifying 4

model name 1

nonvolatile memory 52

operating system, product

description 2

packaging guidelines 21 plastic parts, service

considerations 18

ports

HDMI 4 product description 1 USB 5

USB 3.0 charging (powered) 4 power button, identifying 7 power connector cable

removal 29

spare part number 29 power connector cable, spare part

number 13, 29 power connector, identifying 5 power cord

set requirements 50

spare part numbers 16 power lights 4 power requirements, product

description 2 processor, product description 1 product description

audio 1 chipset 1 display panel 1 external media cards 1 graphics 1 memory 1 microphone 1 operating system 2 ports 1 power requirements 2 processors 1 product name 1 serviceability 2 storage 1 video 1 wireless 1

product name 1 product name and number,

computer 9

regulatory information

regulatory label 9 wireless certication labels 9

removal/replacement procedures

removing personal data from volatile

system memory 52

Rubber Kit, spare part number 16,

Rubber Kit, spare part numbers 16

screw covers

removal 25

spare part number 25 Screw Kit, spare part number 17 security cable slot, identifying 4 serial number 9 serial number, computer 9 service considerations

cables 19

connectors 19

plastic parts 18 service labels

locating 9 serviceability, product description 2 slots

memory card reader 4

security cable 4 Speaker Kit, spare part number 13,

speakers

removal 44

spare part number 13, 44 speakers, identifying 8 storage, product description 1 system board

removal 45

spare part numbers 13, 45 system memory, removing personal

data from volatile 52

tools required 18

TouchPad

removal 27 spare part number 11, 27

touchpad cable

spare part numbers 11 TouchPad zone, identifying 6 transporting guidelines 21 traveling with the computer 9

USB 3.0 charging (powered) port,

identifying 4

USB board

removal 30

spare part numbers 13, 30 USB cable

spare part numbers 13 USB ports, identifying 5

video, product description 1

webcam light, identifying 3 webcam, identifying 3 webcam/microphone module

removal 36

spare part number 14, 37 wireless antennas

disconnecting 31 wireless certication label 9 wireless, product description 1 WLAN antennas, identifying 3 WLAN device 9 WLAN label 9 WLAN module

spare part numbers 13 WLAN/Bluetooth combo card

removal 31

spare part number 31 workstation guidelines 21

62 Index

HP 14-ak000 Maintenance and Service Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Product description

Display

Left side

Right side

TouchPad

Buttons

Bottom

Labels

3 Illustrated parts catalog

Computer major components

Display assembly subcomponents

Rubber Kit

Miscellaneous parts

Tools required

Service considerations

Plastic parts

Cables and connectors

Drive handling

Grounding guidelines

Electrostatic discharge damage

Packaging and transporting guidelines

Workstation guidelines

Equipment guidelines

Component replacement procedures

Keyboard/top cover

TouchPad

Power connector cable

USB board

WLAN/Bluetooth combo card

Heat sink

Display assembly

Battery

Speakers

System board

7 Using HP PC Hardware Diagnostics (UEFI)

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device

8 Power cord set requirements

Requirements for all countries

9 Statement of memory volatility

Nonvolatile memory usage

Questions and answers

Using HP Sure Start (select models only)

10 Recycling

Index