HP Chromebook 14a Series Manual

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

© Copyright 2021 HP Development Company,
L.P.
Bluetooth is a trademark owned by its
proprietor and used by HP Inc. under license.
Intel, Celeron, and Pentium are trademarks of
Intel Corporation or its subsidiaries in the U.S.
and/or other countries. Chrome, Chrome OS,
Chromebook, Google, and Google Drive are
trademarks of Google LLC. 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. DisplayPort™ and
the DisplayPort™ logo are trademarks owned
by the Video Electronics Standards Association
(VESA®) in the United States and other
countries.
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: June 2021
Document Part Number: M74093-001
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 .................................................................................................................................................. 4
Right ....................................................................................................................................................................... 4
Left ......................................................................................................................................................................... 5
Display .................................................................................................................................................................... 6
Keyboard area ........................................................................................................................................................ 7
Touchpad ............................................................................................................................................. 7
Speakers .............................................................................................................................................. 7
Special keys ......................................................................................................................................... 8
Labels ..................................................................................................................................................................... 9
3 Illustrated parts catalog .............................................................................................................................. 11
Computer major components .............................................................................................................................. 11
Display assembly subcomponents ...................................................................................................................... 14
Cables ................................................................................................................................................................... 16
Miscellaneous parts ............................................................................................................................................. 16
4 Removal and replacement procedures preliminary requirements .................................................................... 18
Tools required ...................................................................................................................................................... 18
Service considerations ......................................................................................................................................... 18
Plastic parts ....................................................................................................................................... 18
Cables and connectors ...................................................................................................................... 18
Drive handling ................................................................................................................................... 18
Electrostatic discharge information .................................................................................................................... 19
Generating static electricity .............................................................................................................. 19
Preventing electrostatic damage to equipment ............................................................................... 20
Personal grounding methods and equipment .................................................................................. 20
Grounding the work area ................................................................................................................... 21
Recommended materials and equipment ........................................................................................ 21
Cleaning your computer ...................................................................................................................................... 22
Enabling HP Easy Clean (select products only) ................................................................................. 22
Removing dirt and debris from your computer ................................................................................ 22
Cleaning your computer with a disinfectant ..................................................................................... 23
Caring for wood veneer (select products only) ................................................................................. 24
Packaging and transporting guidelines .............................................................................................................. 24
v

Accessing support information ........................................................................................................................... 24
5 Removal and replacement procedures for authorized service provider parts .................................................... 26
Component replacement procedures .................................................................................................................. 26
Preparation for disassembly ............................................................................................................. 26
Bottom cover ..................................................................................................................................... 26
Battery ............................................................................................................................................... 28
WLAN module .................................................................................................................................... 29
Speakers ............................................................................................................................................ 31
Touchpad ........................................................................................................................................... 31
USB board .......................................................................................................................................... 33
System board .................................................................................................................................... 34
Power connector (DC in) cable .......................................................................................................... 38
Display assembly ............................................................................................................................... 39
Keyboard with top cover ................................................................................................................... 47
6 Backing up, resetting, and recovering ........................................................................................................... 49
Backing up ............................................................................................................................................................ 49
Resetting .............................................................................................................................................................. 49
Recovering ........................................................................................................................................................... 49
Installing the Chromebook Recovery Utility ..................................................................................... 50
Creating recovery media ................................................................................................................... 50
Recovering the Chrome operating system ....................................................................................... 50
Setting up your computer after a reset or recovery ........................................................................................... 51
Erasing and reformatting the recovery media .................................................................................................... 51
7 Specications .............................................................................................................................................. 52
Computer specications ...................................................................................................................................... 52
Display specications .......................................................................................................................................... 52
8 Power cord set requirements ........................................................................................................................ 54
Requirements for all countries ............................................................................................................................ 54
Requirements for specic countries and regions ................................................................................................ 54
9 Recycling .................................................................................................................................................... 56
Index ............................................................................................................................................................. 57
vi

1 Product description
This table provides detailed product information.
Table 1-1 Product components and their descriptions
Category Description
Product Name HP Chromebook™ 14a
Model numbers: 14a-na0xxx, 14a-na1xxx
CTO Model: 14at-na000, 14at-na100
Processor Intel® Pentium® Silver Processor N5030 (1.1 GHz, turbo up to 3.1 GHz, 2400 MHz FSB, 4 MB L2 cache, quad
core, 6 W; Intel UHD 605 Graphics)
Intel Pentium Silver N5000 (1.1 GHz, up to 2.7 GHz, 2400 MHz FSB, 4 MB L2 cache, quad core, 6 W; Intel UHD
Graphics)
Intel Celeron® N4020 (1.1 GHz, up to 2.8 GHz, 2400 MHz FSB, 4 MB L2 cache, dual core, 6 W; Intel UHD
Graphics)
Intel Celeron N4000 (1.1 GHz, up to 2.6 GHz, 2400 MHz FSB, 4 MB L2 cache, dual core, 6 W; Intel UHD Graphics)
Intel Pentium Silver N6000 (1.1 GHz, up to 3.3 GHz, 2933 MHz FSB, 4 MB cache, quad core, 6 W; Intel UHD
Graphics)
Intel Celeron N4500 (1.1 GHz, up to 2.8 GHz, 2933 MHz FSB, 4 MB cache, dual core, 6 W; Intel UHD Graphics)
Graphics Internal graphics
Intel UHD Graphics
Supports HD Decode, DX12, and HDMI
Display 35.6 cm (14.0 in), WLED, slim (3.0 mm), narrow bezel, 45% NTSC (National Television Standards
Committee)
High-denition (HD) (1366 × 768), antiglare, SVA (super vertical alignment), eDP (embedded DisplayPort) 1.2,
220 nits
HD, BrightView, SVA, eDP, 220 nits, Touch-on Panel (TOP)
Full high-denition (FHD) (1920 × 1080), antiglare, UWVA, eDP 1.2, 250 nits
FHD, antiglare, UWVA, eDP, 250 nits, Touch-on Panel (TOP)
Memory Onboard, nonupgradeable
LPDDR4-2400 dual-channel support (Pentium Silver N5000, Celeron N4020/N4000)
LPDDR4-2933 dual-channel support (Pentium Silver N6000, Celeron 4500)
Supports the following congurations:
●8 GB
●4 GB
Primary storage On-board embedded MultiMedia Controller (eMMC v5.0) conguration
128 GB
1

Table 1-1 Product components and their descriptions (continued)
Category Description
64 GB
32 GB
Audio and video Dual speakers
HP Wide Vision Camera (720p)
Dual-array microphone with appropriate software, echo cancellation, and noise suppression
Wireless Integrated wireless options with dual antennas
Realtek RTL8822CE 802.11b/g/n/a/ac (2 × 2) MU-MIMO supported and Bluetooth® 5.0
Intel Wi-Fi 6 AX201 802.11ax (2 × 2) and Bluetooth 5
Media card reader HP Multi-Format Digital Media Card Reader
Supports microSD™, SDHC™, SDXC™
Push-push insertion/removal
Ports Audio-out (headphone)/audio-in (microphone) combo jack
(2) USB 3.2 Type C
●Supports power delivery
●Supports data transfer
●Supports DisplayPort 1.2 out up to 4096 × 2304 @ 60 Hz and HDMI 1.4 out through adapter (Pentium
Silver N5000, Celeron N4020/N4000)
●Supports DisplayPort 1.4 out up to 3840 × 2160 @ 60 Hz and HDMI 1.4 out through adapter (Pentium
Silver N6000, Celeron 4500)
(1) USB 3.2 Type-A
Keyboard/pointing
devices
Google™ Keyboard with clickpad
Full size, island style, backlit
Full size, island style, not backlit
Power requirements Battery
2 cell, 47 Whr, lithium-ion polymer
Long life
Fast charge
AC adapter, USB Type-C®
45 W, nPFC (non-power factor correcting), straight,1.8 m (6.0 ft)
Power cord
C5, conventional, 1 m (3.3 ft)
Security H1 Secure Microcontroller
Operating system Google Chrome™ 64
2 Chapter 1 Product description

Table 1-1 Product components and their descriptions (continued)
Category Description
Serviceability End user replaceable parts
AC adapter
3

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) USB Type-C® power connector and
SuperSpeed 5 Gbps port with DisplayPort™
output
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.
(2) 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 amber: The battery has an error.
●O: The battery is not charging.
(3) USB SuperSpeed 5 Gbps port with HP Sleep
and Charge
Connects a USB device, provides high-speed data transfer,
and charges small devices (such as a smartphone), even
when the computer is o.
NOTE: Use a standard USB Type-A charging cable or cable
adapter (purchased separately) when charging a small
external device.
4 Chapter 2 Components

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) 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.
(2) 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 amber: The battery has an error.
●O: The battery is not charging.
(3) USB Type-C power connector and SuperSpeed
5 Gbps port with DisplayPort output
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.
(4) Memory card reader (select products only) 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:
Left 5

Table 2-2 Left-side components and their descriptions (continued)
Component Description
▲Press in on the card, and then remove it from the
memory card reader.
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).
(2) Internal microphones Record sound.
(3) 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.
(4) Camera light On (white): The camera is in use.
O: The camera is turned o.
*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.
6 Chapter 2 Components

Keyboard area
Keyboards can vary by language.
Touchpad
The touchpad settings and components are described here.
Table 2-4 Touchpad component and description
Component Description
Touchpad zone Reads your nger gestures to move the pointer or activate items on the screen.
Speakers
Speakers are located on the right and left of the keyboard.
Keyboard area 7

Table 2-5 Speakers and their description
Component Description
Speakers Produce sound.
Special keys
Use the illustration and table to locate the special keys.
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.
8 Chapter 2 Components

Table 2-6 Special keys and their descriptions (continued)
Component Description
(2) Search key Opens a search box.
(3) Action keys Execute frequently used system functions.
(4) Power key ●When the computer is o, press the key briey to turn on
the computer.
●When the computer is on, press the key briey to initiate
Sleep.
●When the computer is in the Sleep state, press the key
briey to exit Sleep (select products only).
●When the computer is in Hibernation, press the key briey
to exit Hibernation.
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 at
least 10 seconds to turn o the computer.
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.
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
might 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) Serial number
(2) Product ID
(3) HP product name and model number
Labels 9

Table 2-8 Service label components
Component
(1) HP product name
(2) Model number
(3) Product ID
(4) Serial number
(5) Warranty period
Table 2-9 Service label components
Component
(1) HP product name
(2) Model number
(3) Warranty period
(4) Product ID
(5) Serial number
●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.
10 Chapter 2 Components

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.
Computer major components 11

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
Snow white; no backlight L91515-xx1
Snow white; backlit L91516-xx1
Ash grey; no backlight L91511-xx1
Ash grey; backlit L91512-xx1
Natural silver; no backlight L91513-xx1
Natural silver; backlit L91514-xx1
Jet black, no backlight, no B&O logo on top cover M74072-xx1
Jet black, backlit, no B&O logo on top cover M74073-xx1
Snow white, no backlight, no B&O logo on top cover M74074-xx1
Snow white, backlit, no B&O logo on top cover M74075-xx1
Natural silver, no backlight, no B&O logo on top cover M75313-xx1
Natural silver, backlit, no B&O logo on top cover M75314-xx1
Ash grey, no backlight, no card reader M75857-xx1
Ash grey, backlit, no card reader M75858-xx1
Natural silver, no backlight, no card reader M75859-xx1
Natural silver, backlit, no card reader M75860-xx1
Snow white, no backlight, no card reader M75861-xx1
Snow white, backlit, no card reader M75862-xx1
(3) Touchpad
NOTE: The touchpad cable is available as spare part number L91527-001.
For use in models with Celeron N4000/N4020 or Pentium Silver N5030 processors L91526-001
For use in models with Pentium Silver N6000 or Celeron N4500 processors M74070-001
(4) USB board
NOTE: USB cables are available as spare part number L73309-001 (high speed) and L73310-001
(low speed).
For use in models with Celeron N4000/N4020 or Pentium Silver N5030 processors L91522-001
For use in models with Pentium Silver N6000 or Celeron N4500 processors M74071-001
(5) Speaker Kit L91528-001
(6) System board (includes integrated processor, system memory, and eMMC storage; includes
replacement thermal material)
NOTE: The system board thermal pad is available as spare part number L76600-001.
12 Chapter 3 Illustrated parts catalog

Table 3-1 Computer major component descriptions and part numbers (continued)
Item Component Spare part number
Intel Pentium Silver N6000 processor, 8 GB system memory, and 128 GB eMMC memory M74067-001
Intel Pentium Silver N6000 processor, 4 GB system memory, and 64 GB eMMC memory M74066-001
Intel Pentium Silver N5030 processor, 8 GB system memory, and 128 GB eMMC memory L91521-001
Intel Pentium Silver N5030 processor, 8 GB system memory, and 128 GB eMMC memory, models
with a backlit keyboard
M21214-001
Intel Pentium Silver N5030 processor, 8 GB system memory, and 128 GB eMMC memory, models
with a backlit keyboard, no card reader
M75856-001
Intel Pentium Silver N5030 processor, 8 GB system memory, and 128 GB eMMC memory, no card
reader
M81923-001
Intel Pentium Silver N5030 processor, 4 GB system memory, and 64 GB eMMC memory L91520-001
Intel Pentium Silver N5030 processor, 4 GB system memory, and 64 GB eMMC memory, models with
a backlit keyboard
M21213-001
Intel Pentium Silver N5030 processor, 4 GB system memory, and 64 GB eMMC memory, no card
reader
M75852-001
Intel Pentium Silver N5030 processor, 4 GB system memory, and 64 GB eMMC memory, models with
a backlit keyboard, no card reader
M75855-001
Intel Pentium Silver N5000 processor, 8 GB system memory, and 128 GB eMMC memory M03106-001
Intel Pentium Silver N5000 processor, 8 GB system memory, and 128 GB eMMC memory, models
with a backlit keyboard
M03111-001
Intel Pentium Silver N5000 processor, 4 GB system memory, and 64 GB eMMC memory M00111-001
Intel Pentium Silver N5000 processor, 4 GB system memory, and 64 GB eMMC memory, models with
a backlit keyboard
M03109-001
Intel Celeron N4500 processor, 8 GB system memory, and 128 GB eMMC memory M74065-001
Intel Celeron N4500 processor, 4 GB system memory, and 64 GB eMMC memory M74064-001
Intel Celeron N4500 processor, 4 GB system memory, and 32 GB eMMC memory M74063-001
Intel Celeron N4020 processor, 8 GB system memory, and 128 GB eMMC memory L91519-001
Intel Celeron N4020 processor, 8 GB system memory, and 128 GB eMMC memory, no card reader M81922-001
Intel Celeron N4020 processor, 4 GB system memory, and 128 GB eMMC memory, models with a
backlit keyboard
M21212-001
Intel Celeron N4020 processor, 4 GB system memory, and 128 GB eMMC memory, models with a
backlit keyboard, no card reader
M75854-001
Intel Celeron N4020 processor, 4 GB system memory, and 64 GB eMMC memory L91518-001
Intel Celeron N4020 processor, 4 GB system memory, and 64 GB eMMC memory, models with a
backlit keyboard
M21211-001
Intel Celeron N4020 processor, 4 GB system memory, and 64 GB eMMC memory, models with a
backlit keyboard, no card reader
M81924-001
Intel Celeron N4020 processor, 4 GB system memory, and 64 GB eMMC memory, no card reader M75851-001
Intel Celeron N4020 processor, 4 GB system memory, and 32 GB eMMC memory L91517-001
Computer major components 13

Table 3-1 Computer major component descriptions and part numbers (continued)
Item Component Spare part number
Intel Celeron N4020 processor, 4 GB system memory, and 32 GB eMMC memory, models with a
backlit keyboard
M21210-001
Intel Celeron N4020 processor, 4 GB system memory, and 32 GB eMMC memory, models with a
backlit keyboard, no card reader
M75853-001
Intel Celeron N4020 processor, 4 GB system memory, and 32 GB eMMC memory, no card reader M75850-001
Intel Celeron N4000 processor, 8 GB system memory, and 128 GB eMMC memory M03105-001
Intel Celeron N4000 processor, 8 GB system memory, and 128 GB eMMC memory, models with a
backlit keyboard
M03110-001
Intel Celeron N4000 processor, 4 GB system memory, and 128 GB eMMC memory, models with a
backlit keyboard
M07242-001
Intel Celeron N4000 processor, 4 GB system memory, and 64 GB eMMC memory M00110-001
Intel Celeron N4000 processor, 4 GB system memory, and 64 GB eMMC memory, models with a
backlit keyboard
M03108-001
Intel Celeron N4000 processor, 4 GB system memory, and 32 GB eMMC memory M00109-001
Intel Celeron N4000 processor, 4 GB system memory, and 32 GB eMMC memory, models with a
backlit keyboard
M03107-001
Thermal pad, system board L76600-001
(7) Power connector cable L99191-001
(8) Thermal pad L76600-001
(9) WLAN module
Realtek RTL8822CE 802.11b/g/n/a/ac (2 × 2) MU-MIMO supported and Bluetooth 5.0 L44796-005
Intel Wi-Fi 6 AX201-W + Bluetooth 5 (non-vPro) L92724-005
(10) Battery (2 cell, 47 Whr) L75783-005
(11) Bottom cover L91523-001
(12) Rubber feet L91524-001
Screw covers (not illustrated) L91525-001
Display assembly subcomponents
To identify the display assembly subcomponents, use this illustration and table.
14 Chapter 3 Illustrated parts catalog