HP Chromebook 14 Maintenance And Service Manual Download

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USB doors are available for both sides of the computer. Use the same removal and replacement
procedures for both doors.

Reverse this procedure to install the USB door.

System board

To remove the system board, use these procedures and illustrations.

Table 5-12

System board descriptions and part numbers

Description

Spare part number

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

sensor)

M50344-001

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

sensor)

M50345-001

AMD Ryzen 3 3250C, 8 GB of system memory; no eMMC memory (models with a fingerprint sensor)

M50343-001

AMD Ryzen 3 3250C, 4 GB of system memory; no eMMC memory (models with a fingerprint sensor)

M53245-001

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

sensor)

M49455-001

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

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 fingerprint

sensor and without a backlit keyboard)

M35768-001

Before removing the system board, follow these steps:

Prepare the computer for disassembly (

Preparation for disassembly on page 22

Remove the bottom cover (

Bottom cover on page 22

Remove the battery (see

Battery on page 23

Remove the fan (see

Fan on page 28

Chapter 5 Removal and replacement procedures for authorized service provider parts

Summary of Contents for Chromebook 14

Page 1: ...Maintenance and Service Guide SUMMARY This guide provides information about spare parts removal and replacement of parts security backing up and more ...

Page 2: ...s 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...

Page 3: ...ct the computer air vents Use the computer only on a hard flat surface Do not allow another hard surface such as an adjoining optional printer or a soft surface such as pillows or rugs or clothing to block airflow Also do not allow the AC adapter to 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...

Page 4: ...iv Safety warning notice ...

Page 5: ...erations 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 ...

Page 6: ...ng 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 Specifications 47 Computer specifications 47 35 6 cm 14 0 in display specifications 47 8 Statement of memory volatility ...

Page 7: ...Requirements for specific countries and regions 55 10 Recycling 57 Index 58 vii ...

Page 8: ...viii ...

Page 9: ... 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 definition FHD 1920 1080 UWVA 250 nits High definition 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...

Page 10: ...eadphone 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 adapte...

Page 11: ...e 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 bef...

Page 12: ...dard 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 devic...

Page 13: ...and the battery is fully charged Amber The AC adapter is connected and the battery is charging Blinking white The battery has an error Off 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 an...

Page 14: ...ver 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...

Page 15: ...rs and fingerprint reader and their descriptions Component Description 1 Speakers Produce sound 2 Power key When the computer is off press the key briefly to turn on the computer When the computer is on press and hold the power key for at least 3 seconds to turn off the computer IMPORTANT Pressing and holding down the power key results in the loss of unsaved information If the computer has stopped...

Page 16: ...erprint 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 sy...

Page 17: ...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 labe...

Page 18: ... 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 Illustra...

Page 19: ...em memory 64 GB of eMMC memory models with a fingerprint sensor M49455 001 AMD Athlon Silver 3050C 4 GB of system memory 64 GB of eMMC memory models without a fingerprint 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 fingerprint sensor and without a backlit keyboard M35768 001 5 128 GB solid state drive 2230 PCIe N...

Page 20: ...5759 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 21: ...the miscellaneous parts use this table Table 3 3 Miscellaneous part descriptions and part numbers Component Spare part number AC adapter USB Type C nPFC 1 8 m 5 9 ft 65 W L67440 001 45 W L43407 001 Screw Kit M35074 001 WLAN protective tape M31757 001 Bracket Kit includes touchpad support bracket and fingerprint bracket M12524 001 Power cord C5 1 0 m 3 3 ft Australia L19358 001 Denmark L19360 001 E...

Page 22: ...rts Using excessive force during disassembly and reassembly can damage plastic parts Cables and connectors Handle cables with extreme care to avoid damage IMPORTANT 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 Apply only the tension required to unseat or seat the cables during rem...

Page 23: ...troy static sensitive devices or microcircuitry Often the spark is neither felt nor heard but damage occurs An electronic device exposed to electrostatic discharge ESD might not appear to be affected at all and can work perfectly throughout a normal cycle The device might function normally for a while but it has been degraded in the internal layers reducing its life expectancy Networks built into ...

Page 24: ...nductive or approved containers or packaging Keep electrostatic sensitive parts in their containers until they arrive at static free stations Place items on a grounded surface before removing them from their container Always be properly grounded when touching a sensitive component or assembly Avoid contact with pins leads or circuitry Place reusable electrostatic sensitive parts from assemblies in...

Page 25: ...c safe materials when fixtures must directly contact dissipative surfaces Keep the work area free of nonconductive materials such as ordinary plastic assembly aids and polystyrene foam Use conductive field service tools such as cutters screwdrivers and vacuums Avoid contact with pins leads or circuitry Recommended materials and equipment HP recommends certain materials and equipment to prevent sta...

Page 26: ...19 for guidelines to help prevent the spread of harmful bacteria and viruses Removing dirt and debris from your computer Here are the recommended steps to clean dirt and debris from your computer For computers with wood veneer see Caring for wood veneer select products only on page 20 1 Wear disposable gloves made of latex or nitrile gloves if you are latex sensitive when cleaning the surfaces 2 T...

Page 27: ...ive when cleaning the surfaces 2 Turn off your device and unplug the power cord and other connected external devices Remove any installed batteries from items such as wireless keyboards CAUTION To prevent electric shock or damage to components never clean a product while it is turned on or plugged in 3 Moisten a microfiber cloth with a mixture of 70 isopropyl alcohol and 30 water The cloth should ...

Page 28: ...nd 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 surf...

Page 29: ...he left panel Details display in the right panel Chrome 1 Go to support google com chrome 2 Search collect Chrome device logs Technical bulletins To locate technical bulletins 1 Go to www hp com 2 Place the cursor over Problem solving to display more options 3 Select Support Troubleshooting 4 Type the serial number product number or product name to go to the product support page 5 Select Advisorie...

Page 30: ...pecial note of each screw size and location during removal and replacement Preparation for disassembly To remove and replace computer components use these procedures See Removal and replacement procedures preliminary requirements on page 14 for initial safety procedures 1 Turn off the computer If you are unsure whether the computer is off or in Hibernation turn the computer on and then shut it dow...

Page 31: ...ove the bottom cover from the computer 3 To replace the bottom cover reverse the removal procedures Battery To remove the battery use this procedure and illustration Table 5 2 Battery description and part number Description Spare part number Battery 3 cell 58 Whr M12585 005 Component replacement procedures 23 ...

Page 32: ...y follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 22 2 Remove the bottom cover Bottom cover on page 22 WARNING To reduce potential safety issues use only the user replaceable battery provided with the computer a replacement battery provided by HP or a compatible battery purchased from HP IMPORTANT Removing a battery that is the sole power source for th...

Page 33: ...s M2 0 3 0 screw 1 that secures the drive to the computer 2 Pull the drive away from the socket to remove it 2 To install the solid state drive reverse the removal procedures NOTE Solid state drives are designed with a notch to prevent incorrect insertion Speakers To remove the speakers use this procedure and illustration Table 5 4 Speaker description and part number Description Spare part number ...

Page 34: ...To remove the touchpad use this procedure and illustration Table 5 5 Touchpad description and part number Description Spare part number Touchpad includes rubber and protective tape M35761 001 Touchpad cable included in Cable Kit M34155 001 Touchpad support bracket included in Bracket Kit M12524 001 Before removing the touchpad follow these steps 1 Prepare the computer for disassembly Preparation f...

Page 35: ...pad 3 6 Remove the three Phillips M2 0 2 0 screws 4 that secure the touchpad to the computer 7 Remove the touchpad from the computer 5 Reverse this procedure to install the touchpad To be sure the cable is properly positioned when replacing the touchpad first put the black protective tape back into place reconnect the cable to the touchpad and then replace the clear tape Component replacement proc...

Page 36: ... cover on page 22 3 Remove the battery see Battery on page 23 Remove the fingerprint sensor board 1 Remove the Phillips M2 0 2 0 screw 1 that secures the fingerprint sensor bracket 2 Lift the bottom of the bracket up and then pull bracket toward front and out from under lip at the top of the bracket 2 3 Disconnect the cable from the ZIF connector on the system board 3 and then peel the cable off t...

Page 37: ...tery see Battery on page 23 Remove the fan assembly 1 Disconnect the fan cable from the system board 1 2 Remove the three Phillips M2 0 3 0 screws 2 and then remove the fan 3 Reverse this procedure to install the fan assembly Heat sink To remove the heat sink use these procedures and illustrations Table 5 8 Heat sink descriptions and part numbers Description Spare part number Heat sink M00434 001 ...

Page 38: ...ttom cover on page 22 3 Remove the battery see Battery on page 23 Remove the heat sink 1 In the order indicated on the heat sink remove the four Phillips M2 0 2 0 screws 1 and then remove the heat sink from the computer 2 30 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 39: ...ces it Reverse this procedure to install the heat sink Lock bracket To remove the lock bracket use this procedure and illustration Table 5 9 Lock bracket description and part number Description Spare part number Lock bracket M00433 001 Before removing the lock bracket follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 22 2 Remove the bottom cover Bottom c...

Page 40: ...included in Cable Kit M34155 001 Before removing the USB board follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 22 2 Remove the bottom cover Bottom cover on page 22 3 Remove the battery see Battery on page 23 4 Remove the fan see Fan on page 28 Remove the USB board 1 Remove the tape from the connectors on the USB board 1 2 Disconnect the two cables from...

Page 41: ...USB door left M35758 001 USB door right M35759 001 Before removing the USB door follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 22 2 Remove the bottom cover Bottom cover on page 22 3 Remove the battery see Battery on page 23 Remove the USB door Insert a removal tool under the back of the USB door and then lift to remove the USB door from the computer C...

Page 42: ...1 AMD Ryzen 3 3250C 4 GB of system memory no eMMC memory models with a fingerprint sensor M53245 001 AMD Athlon Silver 3050C 4 GB of system memory 64 GB of eMMC memory models with a fingerprint sensor M49455 001 AMD Athlon Silver 3050C 4 GB of system memory 64 GB of eMMC memory models without a fingerprint sensor and with a backlit keyboard M35762 001 AMD Athlon Silver 3050C 4 GB of system memory ...

Page 43: ...klight cable ZIF 5 select products only Touchpad cable ZIF 6 Keyboard cable ZIF 7 Fingerprint reader cable ZIF 8 Speaker cable 9 2 Remove the four Phillips M2 0 2 0 screws 1 that secure the system board to the computer 3 Lift the right side of the system board 2 and then pull the board up and to the right to remove it 3 Reverse this procedure to install the system board Component replacement proce...

Page 44: ...move the display assembly 1 Remove the plastic that covers the integrated WLAN module 1 and then disconnect the antennas from the module 2 2 Disconnect the camera cable 3 3 Disconnect the display cable 4 4 Remove the display cable from the clip at the top of the chassis 5 5 Remove the camera cable and one antenna cable from their routing at the top of the chassis 6 6 Remove the four Phillips M2 5 ...

Page 45: ...display assembly subcomponents a Remove the three Phillips M2 0 3 0 screws 1 that secure the bezel to the display b Slide a flat tool 2 under each side of the bezel to remove it 3 The bezel is available as spare part number M49511 001 Component replacement procedures 37 ...

Page 46: ...lay panel is secured to the display enclosure with tape that is installed under the left and right sides of the panel To remove the panel use tweezers to grasp the end of the tape 2 While turning the tweezers wrap the tape around the tweezers 3 as you continue to pull the tape out from behind the display panel 4 You must pull the tape multiple times before it is completely removed 38 Chapter 5 Rem...

Page 47: ...lay enclosure Display panels are available as the following spare part numbers M34158 001 FHD nontouch M34159 001 FHD touch M34160 001 HD nontouch M34161 001 HD touch d Disconnect the cable from the panel 1 e Remove the panel 2 Component replacement procedures 39 ...

Page 48: ...cable is available as spare part number M49512 001 13 If you need to remove the camera module and cable a Use a flat tool to lift up evenly across the camera module to remove it from the display back cover 1 and then remove the cable and module assembly 2 40 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 49: ...t number M31758 001 The camera cable is available as spare part number M12614 001 14 If you need to remove the hinges from the display a Remove the two Phillips broad head M2 5 2 5 screws 1 from each hinge b Remove the hinges from the display 2 The display hinges are available as spare part number M00440 001 Component replacement procedures 41 ...

Page 50: ...isplay a Remove the four Phillips broadhead M2 0 2 5 screws 1 from the bracket b Remove the bracket from the display 2 The bracket is available as spare part number M00700 001 42 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 51: ...he top cover keyboards The second table provides the country codes Table 5 13 Keyboard with top cover descriptions and part numbers Description Spare part number Keyboard with top cover backlit with fingerprint sensor M35770 xx1 Keyboard with top cover backlit without fingerprint sensor M35769 xx1 Keyboard with top cover not backlit without fingerprint sensor M35772 xx1 Keyboard with top cover not...

Page 52: ...ed your computer and it still doesn t work properly You want to change the owner of your computer To reset your computer 1 Under the Settings menu select Advanced 2 In the Powerwash section select Powerwash 3 Select Restart 4 In the window that appears select Powerwash and then select Continue 5 Follow the on screen instructions to reset your computer and sign in with your Google Account NOTE The ...

Page 53: ... Open the Chrome Web Store search for chrome recovery select Chromebook Recovery Utility from the Apps list and follow the on screen instructions Creating recovery media You can use recovery media to recover the original operating system and software programs that were installed at the factory To create recovery media 1 Turn on a computer that has internet access NOTE You must have administrative ...

Page 54: ... support google com Erasing and reformatting the recovery media When you create recovery media the USB flash drive or SD memory card is formatted as a recovery tool After recovery you must erase the recovery media to reuse your storage device Follow these steps to use the Chromebook Recovery Utility to erase the recovery media 1 Select the Launcher icon and then select All Apps 2 In the apps windo...

Page 55: ...4 kg 3 4 lb Input power Operating voltage and current 19 5 V dc 3 33 A 65 W 19 5 V dc 2 31 A 45 W Temperature Operating 5 C to 35 C 41 F to 95 F Nonoperating 20 C to 60 C 4 F to 140 F 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 pro...

Page 56: ... U S Active diagonal size 35 6 cm 14 0 in Resolution 1920 1080 FHD 1368 766 HD Surface treatment Antiglare Brightness 250 nits Viewing angle UWVA FHD panels SVA HD panels Backlight WLED Display panel interface eDP 48 Chapter 7 Specifications ...

Page 57: ...se before beginning steps in this chapter Current BIOS steps Use these instructions to restore nonvolatile memory 1 Follow these steps 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 a Turn on or restart the computer and then quickly press esc NOTE If the system has...

Page 58: ...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 If you clear data using Secure Erase you cannot recover it a Turn on or restart the computer and then quickly press esc b Select ...

Page 59: ...OS or by changing the Windows date time This memory is not write protected Controller NIC EEPROM 64 KB not customer accessible No Yes Stores NIC configuration and NIC firmware NIC EEPROM is programmed using a utility from the NIC vendor that can be run from DOS A utility must be used to write data to this memory and is available from the NIC vendor Writing data to this ROM in an inappropriate mann...

Page 60: ...ting the firmware Only firmware updates digitally signed by Intel can be applied using this utility Bluetooth flash select products only 2 megabits No Yes Stores Bluetooth configuration and firmware Bluetooth flash is programmed at the factory Tools for writing data to this memory are not publicly available but can be obtained from the silicon vendor A utility must be used for writing data to this...

Page 61: ...ic 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 runtime 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 deta...

Page 62: ...ear or delete all Secure Boot Keys a Turn on or restart the computer and then quickly press esc b Select the Security menu select Secure Boot Configuration and then follow the on screen instructions c At the Secure Boot Configuration window select Secure Boot select Clear Secure Boot Keys and then follow the on screen instructions to continue Using HP Sure Start select products only Select compute...

Page 63: ...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 A and a nominal voltage rating of 125 V ac or 250 V ac as required by the power system of each country or region The appliance coupler must meet the mechanical configuration of an...

Page 64: ...lexible cord and wall plug must bear a T mark and registration number in accordance with the Japanese Dentori Law The flexible cord must be Type VCTF three conductor 0 75 mm or 1 25 mm conductor size The wall plug must be a two pole grounding type with a Japanese Industrial Standard C8303 7 A 125 V ac configuration 4 The flexible cord must be Type RVV three conductor 0 75 mm conductor size Power c...

Page 65: ...he 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 website at http www hp com recycle 57 ...

Page 66: ...ver illustrated 12 spare part number 12 display bezel illustrated 12 spare part number 12 display cable illustrated 12 spare part number 12 display panel illustrated 12 spare part number 12 E electrostatic discharge ESD 14 15 preventing damage 14 15 16 esc key identifying 8 F fan illustrated 10 removal 28 spare part number 10 28 fingerprint reader identifying 7 fingerprint sensor board removal 28 ...

Page 67: ...ot identifying 5 serial number computer 8 service labels locating 8 slots security cable 5 solid state drive removal and replacement 25 spare part country codes 43 speaker illustrated 10 removal 25 spare part number 10 spare part numbers 25 speakers identifying 7 specifications computer 47 display 47 hard drive 47 static electricity 14 15 support information 20 system board illustrated 10 removal ...

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