HP Chromebook14 Maintenance and Service Guide IMPORTANT! This document is intended for HP authorized service providers only.
© Copyright 2013 Hewlett-Packard Development Company, L.P. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. Intel and Celeron are U.S. registered trademarks of Intel Corporation. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services.
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. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation.
iv Safety warning notice
Table of contents 1 Product description ........................................................................................................... 1 2 External component identification ..................................................................................... 3 Display ................................................................................................................................... 3 Button ........................................................................................
SIM slot board ........................................................................................................ 31 WLAN module ........................................................................................................ 32 Fan ....................................................................................................................... 34 USB board ............................................................................................................. 35 WWAN module .......
1 Product description Category Description Product Name HP Chromebook14 Processor Intel® Celeron® 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W) Chipset Intel Lynx Point-LP processor controller hub (PCH), ULT, soldered on circuit (SoC), integrated in MCP Panel 14.0-in, BrightView (BV), high-definition (HD), white light-emitting display (WLED), (1366×768), SVA, typical brightness: 200 nits, flat (3.
Category Description 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+ External expansion HP multi-format digital media card deader Support for SD/SDHC/SDXC up to UHS-50 Push-push insertion/removal SIM slot (populated with WWAN; tool-less user-accessible) Ports ● AC adapter, H
2 External component identification Display NOTE: The position of the WLAN antennas differs according to model. If your model has WWAN capability in addition to WLAN, the WLAN antennas will be are located below the display. See (1) in the table below. Item Component Description (1) WLAN antennas (2)* Send and receive wireless signals to communicate with wireless local area networks.
Item Component Description (6) WWAN antennas (2)* (select models only) Send and receive wireless signals to communicate with wireless wide 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. For wireless regulatory notices, see the section of the Regulatory, Safety and Environmental Notices that applies to your country or region.
TouchPad Item Component Description (1) TouchPad zone Reads your finger gesture to move the pointer or activate items on the screen.
Left side Item Component Description (1) 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. (2) HDMI port Connects an optional video or audio device, such as a high-definition television, or any compatible digital or audio device. (3) USB 3.0 ports (2) Each USB 3.
Right side Item Component Description (1) Power connector Connects an AC adapter. (2) 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. (3) 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 connectors facing the slot.
Bottom Item Component Description (1) 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. (2) 8 Speakers (2) Produce sound.
3 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.
Computer major components 10 Item Component Spare part number (1) 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 13.
Item Component Spare part number For use in the Netherlands 740172-B31 For use in the United Kingdom and Singapore 740172-031 For use in the United States 740172-001 (3) Speaker Kit (includes left and right speakers and cables) 740154-001 (4) SIM slot board (includes cable) 740168-001 (5) Atheros AR9462 802.11a/b/g/n 2×2 Bluetooth 4.0 Combo Adapter 676786-005 (6) Hall sensor board (includes cable) 740169-001 (7) Fan (includes cable) 740149-001 (8) 4-cell, 51-WHr, 3.
Item Component Spare part number In snow white finish for use only on computer models not equipped with WWAN capability 740167-001 Rubber Kit (not illustrated, includes base enclosure rubber feet and display bezel rubber screw covers): 12 For use on computer models with ocean turquoise finish 741055-001 For use on computer models with peach coral finish 743914-001 For use on computer models with snow white finish 743915-001 Chapter 3 Illustrated parts catalog
Display assembly components Item Component (1) Display bezel: Spare part number In ocean turquoise finish 741671-001 In peach coral finish 740150-001 In snow white finish 741670-001 (2) Webcamera/microphone module (includes double-sided adhesive) 740152-001 (3) 14.
Item Component Spare part number (7) Display panel cable (includes webcamera/microphone module cable) 740145-001 (8) Display enclosure: In ocean turquoise finish for use only on computer models equipped with WWAN capability 740136-001 In peach coral finish for use only on computer models equipped with WWAN capability 740137-001 In snow white finish for use only on computer models equipped with WWAN capability 740139-001 Miscellaneous parts Component Spare part number AC adapter: 65-W HP Smart
Sequential part number listing Spare part number Description 490371-001 Power cord for use in North America (3-pin, black, 1.83-m) 490371-011 Power cord for use in Australia (3-pin, black, 1.83-m) 490371-021 Power cord for use in Europe (3-pin, black, 1.83-m) 490371-031 Power cord for use in the United Kingdom and Singapore (3-pin, black, 1.83-m) 490371-D61 Power cord for use in India (3-pin, black, 1.83-m) 539614-001 HP RJ-45-to-USB adapter dongle 676786-005 Atheros AR9462 802.
16 Spare part number Description 740160-001 System board equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 4.
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 17
4 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.
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. Handle cables by the connector whenever possible. In all cases, avoid bending, twisting, or tearing cables.
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. A discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry.
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. ● Place items on a grounded surface before removing items from their containers.
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. On grounded mats with banana-plug connectors, use alligator clips to connect a wrist strap.
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 TouchPad cable.
3. 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. 24 4. Lift the front end of the keyboard/top cover (1) and swing it up and back until the left and right edges detach from the base enclosure. 5.
7. 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. 8. Release the ZIF connector (3) to which the TouchPad cable is attached, and then disconnect the TouchPad cable (4) from the system board. 9. Remove the keyboard/top cover. Reverse this procedure to install the keyboard/top cover.
Speakers Description Spare part number Speaker Kit (includes left and right speakers and cables) 740154-001 Before removing the speakers, follow these steps: 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 down through the operating system. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4.
5. Remove the speakers (4). Reverse this procedure to install the speakers.
Battery Description Spare part number 4-cell, 51-WHr, 3.42-AHr, Li-ion battery (includes cable) 738392-005 Before removing the battery, follow these steps: 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 down through the operating system. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4.
Remove the battery: 1. Disconnect the battery cable from the system board. 2. Remove the Phillips PM2.5×4.5 screw (1) that secures the battery to the base enclosure. 3. Lift the left side of the battery (2) until the battery is clear of the alignment post (3) in the middle of the battery. 4. Release the battery (4) by sliding it to the left.
5. Remove the battery (5) by sliding it forward. Reverse this procedure to install the battery.
SIM slot board Description Spare part number SIM slot board (includes cable) 740168-001 Before removing the SIM slot board, follow these steps: 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 down through the operating system. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4.
3. 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: 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 down through the operating system. 2.
Remove the WLAN module: 1. 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”. 2. Remove the Phillips PM2.0×2.5 screw (2) that secures the WLAN module to the system board. (The WLAN module tilts up.) 3. Remove the WLAN module (3) by pulling the module away from the slot at an angle.
Reverse this procedure to install the WLAN module. Fan 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.
3. 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 slot and WWAN module slot) 744781-001 For use only on computer models not equipped with WWAN capability (includes Media Card Reader slot) 740151-001 Before removing the USB board, follow these steps: 1. Turn off the computer.
4. Remove the keyboard/top cover (see Keyboard/top cover on page 23). 5. 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. Remove the USB board: 1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
WWAN module Description Spare part number HP cr3124 HSPA+ Mobile Broadband Module 741284-005 Before removing the WWAN module, follow these steps: 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 down through the operating system. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4.
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 740148-001 Before removing the power connector cable, follow these steps: 1. Turn off the computer.
3. Release the power connector (3) from the retention clips built into the base enclosure. 4. 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: 1. Turn off the computer.
3. 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: 40 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 down through the operating system. 2.
Remove the display assembly: 1. Disconnect the display panel cable (1) from the system board. 2. 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”. The WLAN antenna cable labeled “2” connects to the WLAN module “Aux” terminal labeled “2”. 3. Release the WLAN antenna cables from the routing channel (3) built into the base enclosure. 4.
7. Remove the display assembly (2). 8. If it is necessary to replace the display bezel or any of the display assembly subcomponents: a. 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.
b. 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. c. Remove the display bezel (4).
9. 44 If it is necessary to replace the display panel: a. Remove the four Phillips PM2.0×2.5 screws (1) that secure the display panel to the display enclosure. b. Lift the top edge of the display panel (2) until it rests at an angle. c. Release the adhesive support strip (1) that secures the display panel cable to the display panel. d. Disconnect the display panel cable (2) from the display panel.
e. Remove the display panel (3). The display panel is available using spare part number 740155-001. 10. 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. a. Detach the webcamera/microphone module (1) from the display enclosure by carefully lifting up on the left side of the module.
c. Remove the webcamera/microphone module (3). The webcamera/microphone module is available using spare part number 740152-001. 46 d. Release the adhesive support strip (1) that secures the display panel cable to the display panel. e. Disconnect the display panel cable (2) from the display panel.
f. Remove the display panel (3). The display panel is available using spare part number 740155-001. 11. If it is necessary to replace the display hinges: a. 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.
b. Remove the display hinges (4). The display hinges are included in the Display Hinge Kit, spare part number 740147-001. 12. If it is necessary to replace the WLAN antenna cables and transceivers: 48 a. Detach the WLAN antenna transceivers (1) from the display enclosure. (The WLAN antenna transceivers are attached to the display enclosure with double-sided adhesive.) b. Release the WLAN antenna cables (2) from the routing clips built into the bottom edge of the display enclosure.
c. 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. 13. If it is necessary to replace the WWAN antenna cables and transceivers: a. Detach the WWAN antenna transceivers (1) from the display enclosure. (The WWAN antenna transceivers are attached to the display enclosure with double-sided adhesive.) b.
c. 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. 14. If it is necessary to replace the display panel cable: 50 a. Disconnect the display panel cable (1) from the webcamera/microphone module. b. Release the display panel cable (2) from the routing clips and channel built into the top edge and left side of the display enclosure.
c. 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.
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 system memory, and a graphics subsystem with UMA memory 740160-001 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 742097-001 Before removing the system board, follow these steps: 1.
Remove the system board: 1. Disconnect the following cables from the system board: (1) Display panel cable (2) Power connector cable (3) USB board cable (4) Fan cable 2. Remove the three Phillips PM2.5×4.5 screws (1) that secure the system board to the base enclosure.
3. 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: 54 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 down through the operating system. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3.
d. Hall sensor board (see Hall sensor board on page 39) e. System board (see System board on page 52) Remove the heat sink: 1. Turn the system board upside down, with the rear toward you. 2. 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. 3. Remove the heat sink (2).
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: 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 down through the operating system. 2. Disconnect the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer.
3. 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.
5 Specifications Metric U.S. Width 34.44 cm 13.56 in Depth 23.98 cm 9.44 in Height 2.16 cm 0.86 in Weight (lowest weight configuration) 2.15 g 4.
6 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. Power cord sets for use in other countries and regions must meet the requirements of the country or region where the computer is used.
60 Country/region Accredited agency Applicable note number France UTE 1 Germany VDE 1 Italy IMQ 1 Japan METI 3 The Netherlands KEMA 1 Norway NEMKO 1 The People's Republic of China COC 5 South Korea EK 4 Sweden CEMKO 1 Switzerland SEV 1 Taiwan BSMI 4 The United Kingdom BSI 1 The United States UL 2 1. The flexible cord must be Type HO5VV-F, 3-conductor, 1.0-mm² conductor size.
7 Recycling When a non-rechargeable or rechargeable battery has reached the end of its useful life, do not dispose of the 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 Web site at http://www.hp.com/recycle.
Index A AC adapter light 7 AC adapter, spare part numbers 15, 16 antenna location 3, 4 removal 48, 49 spare part numbers 13, 16, 49, 50 audio, product description 1 audio-in jack 6 audio-out jack 6 B base enclosure, spare part numbers 11, 15, 16 battery removal 28 spare part number 11, 15, 28 bottom components 8 button component 4 C cables, service considerations 19 chipset, product description 1 components bottom 8 button 4 display 3 left side 6 right side 7 TouchPad 5 computer major components 10 specifi
lights AC adapter 7 power 6 webcamera 3 M mass storage device precautions 19 product description 1 memory card reader 7 memory module, product description 1 microphone location 3 product description 1 microphone jack 6 model name 1 O operating system, product description 2 P packaging guidelines 21 plastic parts, service considerations 18 pointing device, product description 2 ports HDMI 6 product description 2 USB 2.0 7 USB 3.
WWAN module removal 37 spare part number 11, 16, 37 64 Index
