HP Chromebook 14b-na0000 (20X89AV) User guide

Maintenance and Service Guide

SUMMARY

This guide provides information about spare parts, removal and replacement of parts, security, backing up, and more.

L.P.

AMD, Athlon, Ryzen, and Radeon Vega are

trademarks of Advanced Micro Devices, Inc.

Bluetooth is a trademark owned by its

proprietor and used by HP Inc. under license.

Chrome, Chrome OS, Chromebook, Google,

Google Assistant, and Google Drive are

trademarks of Google LLC. Intel is a trademark

of Intel Corporation or its subsidiaries in the

U.S. and/or other countries. SDHC, SDXC, and

microSD are trademarks or registered

trademarks of SD-3C LLC. Microsoft and

Windows are either registered trademarks or

trademarks of Microsoft Corporation in the

United States and/or other countries. USB

Type-C and USB-C are registered trademarks of

USB Implementers Forum.

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: January 2021

Document Part Number: M40788-001

Product notice

This 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

Reduce the possibility of heat-related injuries or of overheating the computer by following the practices

described.

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

the computer directly on your lap or obstruct the computer air vents. Use the computer 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 come into contact with the

skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter

comply with the user-accessible surface temperature limits dened by applicable safety standards.

iii

iv Safety warning notice

Table of contents

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

2 Components .................................................................................................................................................. 3

Right ....................................................................................................................................................................... 3

Left ......................................................................................................................................................................... 4

Display .................................................................................................................................................................... 5

Keyboard area ........................................................................................................................................................ 6

Touchpad ............................................................................................................................................. 6

Button, speakers, and ngerprint reader ........................................................................................... 7

Special keys ......................................................................................................................................... 8

Labels ..................................................................................................................................................................... 8

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

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

Display assembly subcomponents ...................................................................................................................... 12

Miscellaneous parts ............................................................................................................................................. 13

4 Removal and replacement procedures preliminary requirements .................................................................... 14

Tools required ...................................................................................................................................................... 14

Service considerations ......................................................................................................................................... 14

Plastic parts ....................................................................................................................................... 14

Cables and connectors ...................................................................................................................... 14

Drive handling ................................................................................................................................... 14

Electrostatic discharge information .................................................................................................................... 15

Generating static electricity .............................................................................................................. 15

Preventing electrostatic damage to equipment ............................................................................... 16

Personal grounding methods and equipment .................................................................................. 16

Grounding the work area ................................................................................................................... 17

Recommended materials and equipment ........................................................................................ 17

Cleaning your computer ...................................................................................................................................... 18

Enabling HP Easy Clean (select products only) ................................................................................. 18

Removing dirt and debris from your computer ................................................................................ 18

Cleaning your computer with a disinfectant ..................................................................................... 19

Caring for wood veneer (select products only) ................................................................................. 20

Packaging and transporting guidelines .............................................................................................................. 20

Accessing support information ........................................................................................................................... 20

v

5 Removal and replacement procedures for authorized service provider parts .................................................... 22

Component replacement procedures .................................................................................................................. 22

Preparation for disassembly ............................................................................................................. 22

Bottom cover ..................................................................................................................................... 22

Battery ............................................................................................................................................... 23

Solid-state drive ................................................................................................................................ 25

Speakers ............................................................................................................................................ 25

Touchpad ........................................................................................................................................... 26

Fingerprint sensor board .................................................................................................................. 28

Fan ..................................................................................................................................................... 28

Heat sink ............................................................................................................................................ 29

Lock bracket ...................................................................................................................................... 31

USB board .......................................................................................................................................... 32

USB door ............................................................................................................................................ 33

System board .................................................................................................................................... 34

Display assembly ............................................................................................................................... 36

Keyboard with top cover ................................................................................................................... 43

6 Backing up, resetting, and recovering ........................................................................................................... 44

Backing up ............................................................................................................................................................ 44

Resetting .............................................................................................................................................................. 44

Recovering ........................................................................................................................................................... 44

Installing the Chromebook Recovery Utility ..................................................................................... 45

Creating recovery media ................................................................................................................... 45

Recovering the Chrome operating system ....................................................................................... 45

Setting up your computer after a reset or recovery ........................................................................................... 46

Erasing and reformatting the recovery media .................................................................................................... 46

7 Specications .............................................................................................................................................. 47

Computer specications ...................................................................................................................................... 47

35.6 cm (14.0 in) display specications .............................................................................................................. 47

8 Statement of memory volatility .................................................................................................................... 49

Current BIOS steps ............................................................................................................................................... 49

Nonvolatile memory usage ................................................................................................................................. 51

Questions and answers ....................................................................................................................................... 53

Using HP Sure Start (select products only) ......................................................................................................... 54

9 Power cord set requirements ........................................................................................................................ 55

Requirements for all countries ............................................................................................................................ 55

vi

Requirements for specic countries and regions ................................................................................................ 55

10 Recycling .................................................................................................................................................. 57

Index ............................................................................................................................................................. 58

vii

viii

1 Product description

This table provides detailed product information.

Table 1-1 Product components and their descriptions

Category Description

Product Name HP Chromebook 14

Model number: 14b-na0xxx

Processors AMD® processors

AMD Ryzen™ 5-3500C with Radeon Vega™ 8 Graphics (2.1 GHz [up to 3.7 GHz], 4 cores, 6 MB cache, 15 W)

AMD Ryzen 3-3250C with Radeon Vega 3 Graphics (2.6 GHz [up to 3.5 GHz], 2 cores, 5 MB cache, 15 W)

AMD Athlon™ 3150C with Radeon Vega 3 Graphics (2.4 GHz [up to 3.3 GHz], 2 cores, 5 MB cache, 15 W)

AMD Athlon Silver 3050C with Radeon Vega Graphics (2.3 GHz [up to 3.2 GHz], 2 cores, 5 MB cache, 15 W)

Graphics Internal graphics

AMD Radeon Integrated Graphics

Display 35.6 cm (14.0 in), WLED, antiglare, eDP, narrow bezel, nontouch

Full high denition (FHD) (1920 × 1080), UWVA, 250 nits

High denition (HD) (1366 × 768), SVA, 250 nits

35.6 cm (14.0 in), antiglare, eDP, narrow bezel, Touch-on Panel (TOP)

FHD, UWVA, 250 nits

HD, SVA, 250 nits

Memory Soldered on board, nonupgradeable

DDR4-2400 dual-channel support

Supports the following congurations:

● 8 GB

● 4 GB

Primary storage On-board embedded MultiMedia Controller (eMMC v5.0) conguration

64 GB

Solid-state drive (2230, NVMe, PCIe)

128 GB

Audio and video HD audio

B&O Play

Dual stereo speakers

HD Camera: HD WFOV + array dual microphone

1

Table 1-1 Product components and their descriptions (continued)

Category Description

Dual microphone with appropriate software: beam forming, echo cancellation, noise suppression

Supports Google Assistant™ virtual digital assistant

1280 × 720 by 30 frames per second

Camera privacy cover

Wireless Integrated wireless options with dual antennas

Intel® Wi-Fi 6 AX200 + Bluetooth® 5 (non-vPro)

Media card reader Supports microSD™, SDHC™, SDXC™ up to UHS-104

Push-push insertion/removal

Ports HDMI v1.4b

Audio-out (headphone)/audio-in (microphone) combo jack

(2) USB 3.1 Gen1 Type C

(2) USB 3.1 Gen1 Type-A

Keyboard/pointing

devices

Keyboard

Full size, island style, 2-coat paint, spill resistant, not backlit

Full size, island style, 3-coat paint, spill resistant, backlit

Clickpad requirements

Multitouch gestures enabled

Taps enabled as default

Power requirements Battery

3 cell, 58 Whr, polymer, HP Long Life, fast charge

AC adapter, USB Type-C

65 W, nPFC, straight

45 W, nPFC, straight

Power cord

C5, 1 m (3.3 ft)

Security Nano security lock slot

Fingerprint sensor

Camera privacy cover

H1 Secure Microcontroller

Operating system Google® Chrome™ 64

Serviceability End user replaceable parts

AC adapter

2 Chapter 1 Product description

2 Components

Your computer features top-rated components. This chapter provides details about your components, where

they are located, and how they work.

Right

Use the illustration and table to identify the components on the right side of the computer.

Table 2-1 Right-side components and their descriptions

Component Description

(1) Memory card reader Reads optional memory cards that store, manage, share, or

access information.

To insert a card:

1. Hold the card label-side up, with the connectors facing

the computer.

2. Insert the card into the memory card reader, and then

press in on the card until it is rmly seated.

To remove a card:

▲ Press in on the card, and then remove it from the

memory card reader.

(2) Audio-out (headphone)/Audio-in

(microphone) combo jack

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 standalone microphones.

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

volume before putting on headphones, earbuds, or a

headset. For additional safety information, see the

Regulatory, Safety, and Environmental Notices.

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

computer speakers are disabled.

(3) AC adapter and battery light ● White: The AC adapter is connected and the battery is

fully charged.

● Amber: The AC adapter is connected and the battery is

charging.

● Blinking white: The battery has an error.

Right 3

Table 2-1 Right-side components and their descriptions (continued)

Component Description

● O: The battery is not charging.

(4) USB Type-C® power connector and

SuperSpeed port

Connects an AC adapter that has a USB Type-C connector,

supplying power to the computer and, if needed, charging

the computer battery.

– and –

Connects a USB device, provides high-speed data transfer,

and (for select products) charges small devices (such as a

smartphone) when the computer is on or in Sleep mode.

NOTE: Use a standard USB Type-C charging cable or cable

adapter (purchased separately) when charging a small

external device.

(5) USB SuperSpeed port Connects a USB device, provides high-speed data transfer,

and (for select products) charges small devices (such as a

smartphone) when the computer is on or in Sleep mode.

NOTE: Use a standard USB Type-A charging cable or cable

adapter (purchased separately) when charging a small

external device.

Left

Use the illustration and table to identify the components on the left side of the computer.

Table

2-2 Left-side components and their descriptions

Component Description

(1) USB SuperSpeed port Connects a USB device, provides high-speed data transfer,

and (for select products) charges small devices (such as a

smartphone) when the computer is on or in Sleep mode.

NOTE: Use a standard USB Type-A charging cable or cable

adapter (purchased separately) when charging a small

external device.

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

denition television, any compatible digital or audio

component, or a high-speed High Denition Multimedia

Interface (HDMI) device.

(3) USB Type-C power connector and SuperSpeed

port

Connects an AC adapter that has a USB Type-C connector,

supplying power to the computer and, if needed, charging the

computer battery.

– and –

4 Chapter 2 Components

Table 2-2 Left-side components and their descriptions (continued)

Component Description

Connects a USB device, provides high-speed data transfer,

and (for select products) charges small devices (such as a

smartphone) when the computer is on or in Sleep mode.

NOTE: Use a standard USB Type-C charging cable or cable

adapter (purchased separately) when charging a small

external device.

(4) AC adapter and battery light ● White: The AC adapter is connected and the battery is

fully charged.

● Amber: The AC adapter is connected and the battery is

charging.

● Blinking white: The battery has an error.

● O: The battery is not charging.

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

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

but it might not prevent the computer from being mishandled

or stolen.

Display

Use the illustration and table to identify the components on the display.

Table

2-3 Display components and their descriptions

Component Description

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

area networks (WLANs).

Display 5

Table 2-3 Display components and their descriptions (continued)

Component Description

(2) Internal microphones Record sound.

(3) Camera light On (white): The camera is in use.

O: The camera is turned o by the software.

(4) Camera Allows you to video chat, record video, and record still images.

NOTE: Camera functions vary depending on the camera hardware

and software installed on your product.

(5) Camera privacy cover By default, the camera lens is uncovered, but you can slide the

camera privacy cover to block the camera's view. To use the camera,

slide the camera privacy cover in the opposite direction to reveal the

lens.

NOTE: If you have both front-facing and rear-facing cameras, when

one camera lens is revealed and ready to use, the other is concealed.

*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.

Keyboard area

Keyboards can vary by language.

Touchpad

The touchpad settings and components are described here.

6 Chapter 2 Components

Table 2-4 Touchpad component and description

Component Description

(1) Touchpad zone Reads your nger gestures to move the pointer or activate items on the screen.

Button, speakers, and ngerprint reader

Speakers are located on the right and left of the keyboard. Fingerprint readers can be located on the

touchpad, on a side panel of the computer, or on the top cover below the keyboard.

Table 2-5 Button, speakers, and ngerprint reader and their descriptions

Component Description

(1) Speakers Produce sound.

(2) Power key ● When the computer is o, press the key briey to turn on

the computer.

● When the computer is on, press and hold the power key for

at least 3 seconds to turn o the computer.

IMPORTANT: Pressing and holding down the power key results

in the loss of unsaved information.

If the computer has stopped responding and shutdown

procedures are ineective, press and hold the power key for 3

seconds or more to turn o the computer.

To learn more about your power settings, see your power

options.

Keyboard area 7

Table 2-5 Button, speakers, and ngerprint reader and their descriptions (continued)

Component Description

1. At the bottom-right of your Chromebook™ screen, select

the displayed time.

2. Select Settings.

3. From the Device menu, select Power.

4. Select an option from the list.

(3) Fingerprint reader The ngerprint reader allows you to unlock the computer screen

or to resume computer operations. The reader does not function

as a login device.

▲ Swipe down across the ngerprint reader.

Special keys

Use the illustration and table to locate the special keys. The search button is located on the left side of the

keyboard.

Table 2-6 Special keys and their descriptions

Component Description

(1) esc key Activates certain computer functions when pressed in

combination with other keys, such as tab or shift.

(2) Search key Opens a search box.

(3) Action keys Execute frequently used system functions.

Labels

The labels axed to the computer provide information that you might need when you troubleshoot system

problems or travel internationally with the computer. Labels can be in paper form or imprinted on the product.

8 Chapter 2 Components

IMPORTANT: Check the following locations for the labels described in this section: the bottom of the

computer, inside the battery bay, under the service door, on the back of the display, or on the bottom of a

tablet kickstand.

● Service label—Provides important information to identify your computer. When contacting support, you

may be asked for the serial number, the product number, or the model number. Locate this information

before you contact support.

Your service label will resemble one of the following examples. Refer to the illustration that most closely

matches the service label on your computer.

Table 2-7 Service label components

Component

(1) HP product name

(2) Model number

(3) Warranty period

(4) Product ID

(5) Serial number

Table 2-8 Service label components

Component

(1) HP product name

(2) Product ID

(3) Serial number

(4) Warranty period

● Regulatory labels—Provide regulatory information about the computer.

● Wireless certication labels—Provide information about optional wireless devices and the approval

markings for the countries or regions in which the devices have been approved for use.

Labels 9

3 Illustrated parts catalog

Use this table to determine the spare parts that are available for the computer.

Computer major components

To identify the computer major components, use this illustration and table.

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

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.

10 Chapter 3 Illustrated parts catalog

Table 3-1 Computer major component descriptions and part numbers

Item Component Spare part number

(1) Display assembly

NOTE: Display assemblies are spared only at the subcomponent level.

(2) Top cover with keyboard

Backlit M35769-xx1

Backlit, ngerprint sensor M35770-xx1

Not backlit M35771-xx1

Not backlit, ngerprint sensor M35772-xx1

(3) Speaker Kit M00436-001

(4) System board (includes integrated processor and system memory; some include eMMC memory;

includes replacement thermal material)

AMD Ryzen 5 3500C processor, 8 GB of system memory; no eMMC memory (models with a

ngerprint sensor)

M50344-001

AMD Ryzen 3 3250C, 8 GB of system memory, and 64 GB of eMMC memory (models with a

ngerprint sensor)

M50345-001

AMD Ryzen 3 3250C, 8 GB of system memory; no eMMC memory (models with a ngerprint sensor) M50343-001

AMD Ryzen 3 3250C, 4 GB of system memory; no eMMC memory (models with a ngerprint sensor) M53245-001

AMD Athlon Silver 3050C, 4 GB of system memory, 64 GB of eMMC memory (models with a

ngerprint sensor)

M49455-001

AMD Athlon Silver 3050C, 4 GB of system memory, 64 GB of eMMC memory (models without a

ngerprint sensor and with a backlit keyboard)

M35762-001

AMD Athlon Silver 3050C, 4 GB of system memory, 64 GB of eMMC memory (models without a

ngerprint sensor and without a backlit keyboard)

M35768-001

(5) 128 GB solid state drive (2230, PCIe, NVMe) M11040-005

(6) USB board

NOTE: USB cables are available in the Cable Kit as spare part number M34155-001.

For use in models with AMD Ryzen 5 processors M50341-001

For use in models with AMD Ryzen 3 and Athlon Silver processors M50342-001

(7) Bottom cover M35756-001

(8) Fingerprint reader bracket (available in the Bracket Kit) M12524-001

(9) Fingerprint sensor board (includes cable) M35757-001

(10) Touchpad bracket (available in the Bracket Kit) M12524-001

(11) Touchpad (includes rubber and protective tape)

NOTE: The touchpad cable is available in the Cable Kit as spare part number M34155-001.

M35761-001

(12) Fan M02014-001

(13) Heat sink (includes replacement thermal material) M31753-001

(14) Battery (3 cell, 58 Whr) M12585-005

Computer major components 11

Table 3-1 Computer major component descriptions and part numbers (continued)

Item Component Spare part number

USB door

(15) Left door M35758-001

(16) Right door M35759-001

Display assembly subcomponents

To identify the display assembly subcomponents, use this illustration and table.

Table 3-2 Display component descriptions and part numbers

Item Component Spare part number

(1) Display bezel M49511-001

(2) Display panel

FHD, nontouch M34158-001

FHD, touch M34159-001

HD, nontouch M34160-001

12 Chapter 3 Illustrated parts catalog

Page is loading ...

HP Chromebook 14b-na0000 (20X89AV) User guide

This manual is also suitable for

HP Chromebook 14b-na0000 (20X89AV) User guide

Related papers

Other documents