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

+ 47 hidden pages