HP Chromebook14 Maintenance And Service Manual
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HP Chromebook14 Maintenance And Service Manual

HP Chromebook14 Maintenance And Service Manual

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HP Chromebook
14
Maintenance and Service Guide
IMPORTANT! This document is intended for
HP authorized service providers only.

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Summary of Contents for HP Chromebook14

  • Page 1 HP Chromebook Maintenance and Service Guide IMPORTANT! This document is intended for HP authorized service providers only.
  • Page 2 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...
  • Page 3 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, 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.
  • Page 4 Safety warning notice...

  • Page 5: Table Of Contents

    Table of contents 1 Product description ......................1 2 External component identification ..................3 Display ........................... 3 Button ............................. 4 TouchPad ..........................5 Left side ..........................6 Right side ..........................7 Bottom ............................ 8 3 Illustrated parts catalog ....................9 Locating the serial number, product number, and model number ............
  • Page 6 SIM slot board ......................31 WLAN module ......................32 Fan ........................34 USB board ......................35 WWAN module ..................... 37 Power connector cable .................... 38 Hall sensor board ....................39 Display assembly ....................40 System board ......................52 Heat sink ....................... 54 Solid-state drive ......................

  • Page 7: Product Description

    Solid-state drive (2242/DS M.2 form factor) Support for 32- or 16-GB Audio and video HP TrueVision HD slim webcamera (fixed, no tilt with activity light; 1280×720 by 30 frames per second) One digital microphone with echo cancellation and noise suppression appropriate software...
  • Page 8 Integrated wireless wide area network (WWAN) options by way of wireless module (select models only) Two WWAN antennas built into display assembly (select models only) Support for the HP cr3124 HSPA+ Mobile Broadband Module SIM card slot (user accessible) Support for HSPA, HSPA+...

  • Page 9: External Component Identification

    Internet service provider, and a wireless router (purchased separately). Webcamera light On: The webcam is in use. HP TrueVision HD Records video, captures still photographs, and allows you to video conference Webcamera and chat online using streaming video Internal microphone Records sound.

  • Page 10: Button

    Item Component Description WWAN antennas (2)* Send and receive wireless signals to communicate with wireless wide (select models only) area networks. *The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the antennas free from obstructions.

  • Page 11: Touchpad

    TouchPad Item Component Description TouchPad zone Reads your finger gesture to move the pointer or activate items on the screen. TouchPad...

  • Page 12: Left Side

    Left side Item Component Description Security cable slot Attaches an optional security cable to the computer. NOTE: The security cable is designed to act as a deterrent, but it may not prevent the computer from being mishandled or stolen. HDMI port Connects an optional video or audio device, such as a high-definition television, or any compatible digital or audio device.

  • Page 13: Right Side

    Right side Item Component Description Power connector Connects an AC adapter. AC adapter light White: AC adapter is attached ● Amber: Battery is charging. ● Blinking white: The AC adapter is connected and battery capacity is low ● Off: Running on battery power. ●...

  • Page 14: Bottom

    Bottom Item Component Description Vents (2) Enable airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. Speakers (2) Produce sound.

  • Page 15: Illustrated Parts Catalog

    Illustrated parts catalog Locating the serial number, product number, and model number The serial number and product number of your tablet are located on the left edge of the tablet. The model number of your tablet is located on the back of your tablet. You may need the information when you travel internationally or when you contact support.

  • Page 16: Computer Major Components

    Computer major components Item Component Spare part number Display assembly: The display assembly is spared at the subcomponent level only. For more display assembly spare part information, see Display assembly components on page Keyboard/top cover (includes keyboard cable, TouchPad, and TouchPad cable): For use in Canada 740172-DB1 For use in Denmark, Finland, and Norway...
  • Page 17 744781-001 Card Reader slot and WWAN module slot) For use only on computer models not equipped with WWAN capability (includes 740151-001 Media Card Reader slot) (13) HP cr3124 HSPA+ Mobile Broadband Module 741284-005 (14) Power connector cable 740148-001 (15) Base enclosure:...
  • Page 18 Item Component Spare part number In snow white finish for use only on computer models not equipped with 740167-001 WWAN capability Rubber Kit (not illustrated, includes base enclosure rubber feet and display bezel rubber screw covers): For use on computer models with ocean turquoise finish 741055-001 For use on computer models with peach coral finish 743914-001...

  • Page 19: Display Assembly Components

    Display assembly components Item Component Spare part number Display bezel: In ocean turquoise finish 741671-001 In peach coral finish 740150-001 In snow white finish 741670-001 Webcamera/microphone module (includes double-sided adhesive) 740152-001 14.0-in, BV, HD, WLED, SVA display panel 740155-001 Display Hinge Kit (includes left and right display hinges) 740147-001 WWAN Antenna Kit (includes WWAN left and right antenna cables 740170-001...

  • Page 20: Miscellaneous Parts

    740139-001 WWAN capability Miscellaneous parts Component Spare part number AC adapter: 65-W HP Smart adapter (non-PFC, EM, 3-wire, 4.5-mm) 714657-001 65-W HP Smart adapter (non-PFC, S-3P, 3-wire, 4.5-mm) 710412-001 45-W HP Smart adapter (non-PFC, RC, 3-wire, 4.5-mm) 741727-001 HP HDMI-to-VGA adapter...

  • Page 21: Sequential Part Number Listing

    HP RJ-45-to-USB adapter dongle 676786-005 Atheros AR9462 802.11a/b/g/n 2×2 Bluetooth 4.0 Combo Adapter 701943-001 HP HDMI-to-VGA adapter 710412-001 65-W HP Smart adapter (non-PFC, S-3P, 3-wire, 4.5-mm) 714657-001 65-W HP Smart adapter (non-PFC, EM, 3-wire, 4.5-mm) 738392-005 4-cell, 51-WHr, 3.42-AHr, Li-ion battery 740136-001...
  • Page 22 741671-001 Display bezel in ocean turquoise finish 741727-001 45-W HP Smart adapter (non-PFC, RC, 3-wire, 4.5-mm) 742097-001 System board equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 2.0-GB of system memory, and a graphics subsystem with UMA memory (includes...
  • Page 23 Spare part number Description 743915-001 Rubber Kit for use on computer models with rubber white finish 744781-001 USB board for use only on computer models equipped with WWAN capability (includes (includes Media Card Reader slot, WWAN module slot, and cable) Sequential part number listing...

  • Page 24: Removal And Replacement Procedures Preliminary Requirements

    Removal and replacement procedures preliminary requirements Tools required You will need the following tools to complete the removal and replacement procedures: Flat-bladed screw driver ● Magnetic screw driver ● Phillips P0 screw driver ● Service considerations The following sections include some of the considerations that you must keep in mind during disassembly and assembly procedures.

  • Page 25: Cables And Connectors

    Cables and connectors CAUTION: When servicing the computer, be sure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the computer. Cables must be handled with extreme care to avoid damage. Apply only the tension required to unseat or seat the cables during removal and insertion.

  • Page 26: Grounding Guidelines

    Grounding guidelines Electrostatic discharge damage Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough power to alter device parameters or melt silicon junctions.

  • Page 27: Packaging And Transporting Guidelines

    Packaging and transporting guidelines Follow these grounding guidelines when packaging and transporting equipment: To avoid hand contact, transport products in static-safe tubes, bags, or boxes. ● Protect ESD-sensitive parts and assemblies with conductive or approved containers or packaging. ● Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations. ●...

  • Page 28: Equipment Guidelines

    Equipment guidelines Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation. When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible straps ● with a minimum of one megohm ±10% resistance in the ground cords. To provide proper ground, wear a strap snugly against the skin at all times.

  • Page 29: Component Replacement Procedures

    Component replacement procedures This chapter provides removal and replacement procedures for Authorized Service Provider only parts. There are as many as 47 screws that must be removed, replaced, and/or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Keyboard/top cover NOTE: The keyboard/top cover spare part kit includes the keyboard cable, TouchPad, and...
  • Page 30 Remove the thirteen Phillips PM2.5×6.5 screws that secure the keyboard/top cover to the computer. CAUTION: Use caution when detaching the keyboard/top cover from the base enclosure. The keyboard and TouchPad ribbon cables are still connected to the system board and can be damaged.
  • Page 31 Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, and then disconnect the keyboard cable (2) from the system board. Release the ZIF connector (3) to which the TouchPad cable is attached, and then disconnect the TouchPad cable (4) from the system board.

  • Page 32: Speakers

    Speakers Description Spare part number Speaker Kit (includes left and right speakers and cables) 740154-001 Before removing the speakers, follow these steps: Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
  • Page 33 Remove the speakers (4). Reverse this procedure to install the speakers. Component replacement procedures...

  • Page 34: Battery

    WARNING! To reduce potential safety issues, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP. CAUTION: Removing a battery that is the sole power source for the computer can cause loss of information.
  • Page 35 Remove the battery: Disconnect the battery cable from the system board. Remove the Phillips PM2.5×4.5 screw (1) that secures the battery to the base enclosure. Lift the left side of the battery (2) until the battery is clear of the alignment post (3) in the middle of the battery.
  • Page 36 Remove the battery (5) by sliding it forward. Reverse this procedure to install the battery. Chapter 4 Removal and replacement procedures preliminary requirements...

  • Page 37: Sim Slot Board

    SIM slot board Description Spare part number SIM slot board (includes cable) 740168-001 Before removing the SIM slot board, follow these steps: Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

  • Page 38: Wlan Module

    Remove the SIM slot board (3) and cable. Reverse this procedure to install the SIM slot board. WLAN module Description Spare part number Atheros AR9462 802.11a/b/g/n 2×2 Bluetooth 4.0 Combo Adapter 676786-005 Before removing the WLAN module, follow these steps: Turn off the computer.
  • Page 39 Remove the WLAN module: Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module. NOTE: The WLAN antenna cable labeled “1” connects to the WLAN module “Main” terminal labeled “1”. The WLAN antenna cable labeled “2” connects to the WLAN module “Aux” terminal labeled “2”.

  • Page 40: Fan

    Reverse this procedure to install the WLAN module. Description Spare part number Fan (includes cable) 740149-001 NOTE: To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the rear edge of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist.

  • Page 41: Usb Board

    Remove the fan (3). Reverse this procedure to install the fan. USB board NOTE: The USB board spare part kit includes a cable. Description Spare part number For use only on computer models equipped with WWAN capability (includes Media Card Reader 744781-001 slot and WWAN module slot) For use only on computer models not equipped with WWAN capability (includes Media Card...
  • Page 42 Remove the keyboard/top cover (see Keyboard/top cover on page 23). Disconnect the battery cable from the system board (see Speakers on page 26). NOTE: When replacing the USB board, be sure that the WWAN module (see WWAN module on page 37) is removed from the defective USB board and installed on the replacement USB board.

  • Page 43: Wwan Module

    WWAN module Description Spare part number HP cr3124 HSPA+ Mobile Broadband Module 741284-005 Before removing the WWAN module, follow these steps: Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

  • Page 44: Power Connector Cable

    NOTE: If the WLAN antenna cables are not connected to the terminals on the WLAN module, protective sleeves should be installed on the antenna connectors, as shown in the following illustration. Reverse this procedure to install the WWAN module. Power connector cable Description Spare part number Power connector cable...

  • Page 45: Hall Sensor Board

    Release the power connector (3) from the retention clips built into the base enclosure. Remove the power connector cable. Reverse this procedure to install the power connector cable. Hall sensor board Description Spare part number Hall sensor board (includes cable) 740149-001 Before removing the hall sensor board, follow these steps: Turn off the computer.

  • Page 46: Display Assembly

    Remove the hall sensor board (3). Reverse this procedure to install the hall sensor board. Display assembly NOTE: The display assembly is spared at the subcomponent level only. For more display assembly spare part information, see the individual removal subsections. Before removing the display assembly, follow these steps: Turn off the computer.
  • Page 47 Remove the display assembly: Disconnect the display panel cable (1) from the system board. Disconnect the WLAN antenna cables (2) from the terminals on the WLAN module. NOTE: The WLAN antenna cable labeled “1” connects to the WLAN module “Main” terminal labeled “1”.
  • Page 48 Remove the display assembly (2). If it is necessary to replace the display bezel or any of the display assembly subcomponents: Remove the two screw covers (1) and the two Phillips PM2.0×2.5 screws (2) that secure the display bezel to the display assembly. The screw covers are available in the following Rubber Kits: 741055-001–For use on computer models with ocean turquoise finish ●...
  • Page 49 Flex the inside edges of the top edge (1), the left and right sides (2), and the bottom edge (3) of the display bezel until the bezel disengages from the display enclosure. Remove the display bezel (4). The display bezel is available using the following spare part numbers: 741671-001–For use on computer models with ocean turquoise finish ●...
  • Page 50 If it is necessary to replace the display panel: Remove the four Phillips PM2.0×2.5 screws (1) that secure the display panel to the display enclosure. Lift the top edge of the display panel (2) until it rests at an angle. Release the adhesive support strip (1) that secures the display panel cable to the display panel.
  • Page 51 Remove the display panel (3). The display panel is available using spare part number 740155-001. If it is necessary to replace the webcamera/microphone module: CAUTION: Handle the webcamera/microphone module with caution. This module has a thin profile and is susceptible to damage when not handled carefully. Detach the webcamera/microphone module (1) from the display enclosure by carefully lifting up on the left side of the module.
  • Page 52 Remove the webcamera/microphone module (3). The webcamera/microphone module is available using spare part number 740152-001. Release the adhesive support strip (1) that secures the display panel cable to the display panel. Disconnect the display panel cable (2) from the display panel. Chapter 4 Removal and replacement procedures preliminary requirements...
  • Page 53 Remove the display panel (3). The display panel is available using spare part number 740155-001. If it is necessary to replace the display hinges: Remove the following screws that secure the display hinges to the display enclosure: (1) Two Phillips PM2.0×2.5 screws (2) Four Phillips PM2.0×3.0 broad head screws (3) Two Phillips PM2.5×3.5 screws Component replacement procedures...
  • Page 54 Remove the display hinges (4). The display hinges are included in the Display Hinge Kit, spare part number 740147-001. If it is necessary to replace the WLAN antenna cables and transceivers: Detach the WLAN antenna transceivers (1) from the display enclosure. (The WLAN antenna transceivers are attached to the display enclosure with double-sided adhesive.) Release the WLAN antenna cables (2) from the routing clips built into the bottom edge of the display enclosure.
  • Page 55 Remove the WLAN antenna cables and transceivers (3). The WLAN antenna cables and transceivers are included in the WLAN Antenna Kit, spare part number 740171-001. If it is necessary to replace the WWAN antenna cables and transceivers: Detach the WWAN antenna transceivers (1) from the display enclosure. (The WWAN antenna transceivers are attached to the display enclosure with double-sided adhesive.) Release the WWAN antenna cables (2) from the routing clips and channel built into the top edge and right side of the display enclosure.
  • Page 56 Remove the WWAN antenna cables and transceivers (3). The WWAN antenna cables and transceivers are included in the WWAN Antenna Kit, spare part number 740170-001. If it is necessary to replace the display panel cable: Disconnect the display panel cable (1) from the webcamera/microphone module. Release the display panel cable (2) from the routing clips and channel built into the top edge and left side of the display enclosure.
  • Page 57 Remove the display panel cable (3). The display panel cable is available using spare part number 740145-001. Reverse this procedure to reassemble and install the display assembly. Component replacement procedures...

  • Page 58: System Board

    System board NOTE: The system board spare part kit includes replacement thermal material. Description Spare part number Equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 4.0-GB of 740160-001 system memory, and a graphics subsystem with UMA memory Equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 2.0-GB of 742097-001 system memory, and a graphics subsystem with UMA memory...
  • Page 59 Remove the system board: Disconnect the following cables from the system board: (1) Display panel cable (2) Power connector cable (3) USB board cable (4) Fan cable Remove the three Phillips PM2.5×4.5 screws (1) that secure the system board to the base enclosure.

  • Page 60: Heat Sink

    Remove the system board (2). Reverse this procedure to install the system board. Heat sink Description Spare part number Heat sink (includes replacement thermal material) 740146-001 Before removing the heat sink, follow these steps: Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
  • Page 61 Hall sensor board (see Hall sensor board on page System board (see System board on page Remove the heat sink: Turn the system board upside down, with the rear toward you. Following the 1 through 4 sequence stamped into the heat sink, loosen the four Phillips captive screws (1) that secure the heat sink to the system board.

  • Page 62: Solid-State Drive

    Reverse this procedure to install the heat sink. Solid-state drive Description Spare part number 32 GB 740159-001 16 GB 740158-001 Before removing the solid-state drive, follow these steps: Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
  • Page 63 Remove the solid-state drive (2) by pulling the drive away from the slot at an angle. Reverse this procedure to install the solid-state drive. Component replacement procedures...

  • Page 64: Specifications

    Specifications Metric U.S. Dimensions Width 34.44 cm 13.56 in 23.98 cm Depth 9.44 in Height 2.16 cm 0.86 in Weight (lowest weight configuration) 2.15 g 4.74 lb Temperature Operating 5°C to 35°C 41°F to 95°F -20°C to 60°C Nonoperating -4°F to 140°F Relative humidity (non-condensing) Operating 10% to 90%...

  • Page 65: Power Cord Set Requirements

    Power cord set requirements The wide-range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC, or from 220 to 240 volts AC. The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the equipment is purchased.
  • Page 66 Country/region Accredited agency Applicable note number France Germany Italy Japan METI The Netherlands KEMA Norway NEMKO The People's Republic of China South Korea Sweden CEMKO Switzerland Taiwan BSMI The United Kingdom The United States The flexible cord must be Type HO5VV-F, 3-conductor, 1.0-mm² conductor size. Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation in the country or region where it will be used.

  • Page 67: Recycling

    Follow the local laws and regulations in your area for battery disposal. HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, see the HP Web site at http://www.hp.com/recycle.

  • Page 68: Index

    Index grounding 20 AC adapter light 7 display assembly components packaging 21 AC adapter, spare part numbers spare part numbers 13, 40 transporting 21 15, 16 display assembly, removal 40 workstation 21 antenna display bezel location 3, 4 removal 42 hall sensor board removal 48, 49 spare part numbers 13, 15,...
  • Page 69 lights external expansion 2 Speaker Kit, spare part number AC adapter 7 graphics 1 11, 15, 26 power 6 keyboard 2 speakers webcamera 3 mass storage device 1 location 8 memory module 1 removal 26 microphone 1 spare part number 11, 15, 26 mass storage device operating system 2 specifications 58...
  • Page 70 WWAN module removal 37 spare part number 11, 16, 37 Index...

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