HP Chromebook 14-ak000 Maintenance and Service Guide
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- HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 1
HP Chromebook (model numbers 14-ak000 through 14-ak099) HP Chromebook 14 G4 Maintenance and Service Guide IMPORTANT! This document is intended for HP authorized service providers only. - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 2
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: September 2015 Document Part Number: 828939-001 Product notice This user guide describes features - HP Chromebook 14-ak000 | Maintenance and Service Guide - 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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 4
iv Safety warning notice - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 5
...14 Rubber Kit ...16 Miscellaneous parts ...16 4 Removal and replacement preliminary requirements 18 Tools required ...18 Service considerations guidelines 21 5 Removal and replacement procedures for Authorized Service Provider parts 23 Component replacement procedures ...23 Keyboard/top - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 6
Heat sink ...33 Display assembly ...35 Battery ...42 Speakers ...44 System board ...45 6 Specifications ...47 7 Using HP PC Hardware Diagnostics (UEFI) ...48 Downloading HP PC Hardware Diagnostics (UEFI) to a USB device 48 8 Power cord set requirements ...50 Requirements for all countries ...50 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 7
External media cards Ports Description HP Chromebook (model numbers 14-ak000 through 14-ak099) HP Chromebook 14 G4 Intel Celeron N2940 (1.83GHz -N 7260AN 802.11 a/b/g/n 2x2 WiFi + BT 4.0 combo HP Multi-Format Digital Media Card Reader Supports micro SD/SDHC/SDXC up to UHS-I Push-Push Insertion/ - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 8
-style, Google keyboard (black) for use only on HP Chromebook 14 G4 Full-sized, textured, island-style, Google keyboard (white) for use only on HP Chromebook 14 Touchpad requirements: Multitouch gestures enabled Taps enabled as default Battery Support for a 3-cell, 37-WHr battery AC adapters 65 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 9
2 External component identification Display Component Description (1) Internal display switch Turns off the display and initiates Sleep if the display is closed while the power is on. NOTE: The internal display switch is not visible from the outside of the computer. (2) WLAN antennas* Send - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 10
: When a device is connected to the jack, the computer speakers are disabled. NOTE: Be sure that the device cable has 4-conductor connector that supports both audio-out (headphone) and audio-in (microphone). Micro memory card reader Reads optional memory cards that store, manage, share, or access - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 11
Component Right side Description ● Off: The computer is off. Component (1) (2) USB 2.0 ports AC adapter light (3) Power connector Description Connect optional USB devices, such as a keyboard, mouse, external drive, printer, scanner or USB hub. ● White: The AC adapter is connected and the - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 12
Top TouchPad Component (1) TouchPad zone Description Moves the on-screen pointer and selects or activates items on the screen. 6 Chapter 2 External component identification - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 13
Buttons Component (1) Power button Description ● When the computer is off, press the button to turn on the computer. ● When the computer is in the Sleep state, press the button briefly to exit Sleep. ● When the computer is on and you want to lock the screen, press the power button until you see - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 14
Bottom Component (1) Speakers (2) Description Produce sound. 8 Chapter 2 External component identification - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 15
need when you troubleshoot system problems or travel internationally Service label-Provides important information, including the following: Component (1) Model name (select products only) (2) Product number (3) Serial number (4) Warranty period Have this information available when you contact support - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 16
current information on 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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 17
see Display assembly subcomponents on page 14. (2) TouchPad (includes gasket) For use in HP Chromebook 14 G4 models 830874-001 For use in silver HP Chromebook models 830874-001 For use in blue HP Chromebook models 835047-001 For use in purple HP Chromebook models 835048-001 (3) Touchpad - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 18
use in Spain ● For use in Switzerland ● For use in the United Kingdom and Singapore ● For use in the United States for use only on HP Chromebook 14 PC HP Chromebook models with blue finish: ● For use in Belgium ● For use in Canada ● For use in Denmark, Finland, and Norway ● For use in France ● For - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 19
board equipped with a Intel Celeron N2840 processor, 2.0-GB of system memory, and 16-GB of eMMC primary storage 830017-001 For use in HP Chromebook 14 G4 models: ● System board equipped with a Intel Celeron N2940 processor, 4.0-GB of system memory, and 32-GB of eMMC primary storage 839038-001 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 20
Display bezel (includes Mylar) For use in HP Chromebook 14 G4 models: ● Silver For use in HP Chromebook models: ● Silver ● Blue ● Purple Webcam/microphone module (includes bezel Mylar) For use in HP Chromebook 14 G4 models For use in HP Chromebook models Display panel (raw) (includes bezel Mylar - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 21
Mylar) For use in HP Chromebook 14 G4 models For use in HP Chromebook models (6) Display panel cable (includes bezel Mylar) For use in HP Chromebook 14 G4 models with HD displays For use in HP Chromebook 14 G4 models with FHD displays For use in HP Chromebook models with HD displays For - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 22
Rubber Kit Item (1) (2) (3) Description Rubber Kit for use in HP Chromebook 14 G4 models Rubber Kit for use in HP Chromebook models Oval foot/screw covers Small foot/screw cover Large foot/screw cover Miscellaneous parts Component AC adapter 65-W HP Smart AC adapter (non-PFC, EM, 4.5-mm) for use - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 23
Component Screw Kit HP HDMI to VGA Adapter RJ-45 to USB adapter Spare part number 830876-001 701943-001 539614-001 Miscellaneous parts 17 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 24
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 only at the points designated in the maintenance instructions. 18 Chapter 4 Removal and replacement preliminary requirements - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 25
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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 26
Styrofoam Removing bubble pack from PCB Packing PCBs in foam-lined box Typical electrostatic voltage levels 10% 35,000 V 12,000 V 6,000 V 2,000 V 11,500 V 14,500 V 26,500 V 21,000 V Relative humidity 40% 15,000 V 5,000 V 800 V 700 V 4,000 V 5,000 V 20,000 V 11,000 V 55% 7,500 V 3,000 V 400 V 400 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 27
material. ● Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment. ● Use conductive field service tools, such as cutters, screw drivers, and vacuums. ● When fixtures must directly contact dissipative surfaces, use fixtures made only of static - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 28
with ground cords of one megohm resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages ● Nonconductive plastic bags, tubes, or boxes ● Metal tote boxes ● Electrostatic voltage levels and - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 29
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Component replacement procedures There are as many as 48 screws that must be removed, replaced, and/or loosened when servicing only on HP Chromebook 14 G4 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 30
in the United States 830879-001 Keyboard/top cover in purple finish for use only on HP Chromebook models: For use in Belgium 830880-A41 For use in the Netherlands 830880-B31 For use feet/screw covers (2). 24 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 31
NOTE: The feet/screw covers are included in the Rubber Kit, spare part number 834911-001 for use only on HP Chromebook 14 G4 models and 830875-001 for use only on HP Chromebook models. 6. Remove the 13 Phillips PM2.0×5.0 screws that secure the keyboard/top cover to the base enclosure. 7. Turn the - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 32
. Remove keyboard/top cover (7) by sliding it forward. Reverse this procedure to install the keyboard/top cover. 26 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 33
TouchPad Description TouchPad for use in HP Chromebook 14 G4 models (includes gasket) TouchPad for use in silver HP Chromebook models (includes gasket) TouchPad for use in blue HP Chromebook models (includes gasket) TouchPad for use in purple HP Chromebook models (includes gasket) Touchpad cable - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 34
5. Remove the TouchPad (4). Reverse this procedure to install the TouchPad. 28 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 35
Power connector cable Description Power connector cable Spare part number 841638-001 Before removing the power connector cable, 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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 36
board to the base enclosure. 3. Remove the USB board (3). Reverse this procedure to install the USB board. 30 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 37
WLAN/Bluetooth combo card The computer uses a card that provides both WLAN and Bluetooth functionality. Description Intel Dual Band Wireless-AC 7260 802.11 ac 2x2 WiFi + BT 4.0 Combo Adapter Intel Dual Band Wireless-N 7260AN 802.11 a/b/g/n 2x2 WiFi + BT 4.0 combo adaptor Spare part number 784645- - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 38
the antenna connectors, as shown in the following illustration. Reverse this procedure to install the WLAN module. 32 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 39
Heat sink Description Heat sink (includes alcohol pad, thermal tape, and thermal grease) Spare part number 830871-001 Before removing the heat sink, 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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 40
and the heat sink components each time the heat sink is removed. Thermal paste is used on the processor (1) and the heat sink section (2) that services it. Reverse this procedure to install the heat sink. 34 Chapter 5 Removal and replacement procedures for Authorized - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 41
Display assembly Before removing the display assembly, 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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 42
-For use on HP Chromebook 14 G4 models ● 830865-001-For use on silver HP Chromebook models ● 830866-001-For use on blue HP Chromebook models ● 830867-001-For use on purple HP Chromebook models 6. If two locations.) 36 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 43
webcam/microphone module. The webcam/microphone module is available using spare part number 834912-001 for use on HP Chromebook 14 G4 models or 830877-001 for use on HP Chromebook models. 7. If it is necessary to replace the display panel: a. Remove the four Phillips PM2.0×3.0 screws (1) that secure - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 44
(2) from the display panel. e. Remove the display panel (3). 8. If it is necessary to replace the display hinges: 38 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 45
following screws that secure the display hinges and display hinge support brackets to the display enclosure: (1) Two Phillips PM2 Hinge Kit, spare part number 834909-001 for use on HP Chromebook 14 G4 models or 830872-001 on HP Chromebook models. 9. If it is necessary to replace the display panel - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 46
The antenna cable is available using spare part number 834904-001 for HP Chromebook 14 G4 models and 830858-001 for HP Chromebook models. The display rear cover is available using the following spare part numbers: 40 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 47
● 834905-001-For use on HP Chromebook 14 G4 models ● 830859-001-For use on silver HP Chromebook models ● 830860-001-For use on blue HP Chromebook models ● 830861-001-For use on purple HP Chromebook models Reverse this procedure to reassemble and install the display assembly. Component replacement - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 48
the system board. 2. Remove the eight Phillips PM2.0×3.0 screws (1) that secure the battery to the base enclosure. 42 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 49
3. Lift the battery from the computer (2). Reverse this procedure to install the battery. Component replacement procedures 43 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 50
(4) and channels built into the base enclosure. 4. Remove the speakers (5). Reverse this procedure to install the speakers. 44 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 51
with a Intel Celeron N2840 processor, 2.0-GB of system memory, and 16-GB of eMMC primary storage 830017-001 System board for use in HP Chromebook 14 G4 models (includes alcohol pad, thermal tape, and thermal grease): Equipped with a Intel Celeron N2940 processor, 4.0-GB of system memory, and 32-GB - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 52
it up and to the right at an angle. Reverse this procedure to install the system board. 46 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 53
6 Specifications Metric U.S. Computer dimensions Width 34.4 cm 13.5 in Depth 24.0 cm 9.5 in Height 1.8 cm 0.7 in Weight 1.7 kg 3.8 lbs Operating voltage and current: 19.5V dc @ 2.31 A - 45 W 19.5V dc @ 3.33 A - 65 W NOTE: This product is designed for IT power systems in Norway with - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 54
diagnostic test, press esc. Downloading HP PC Hardware Diagnostics (UEFI) to a USB device NOTE: The HP PC Hardware Diagnostics (UEFI) download instructions are provided in English only, and you must use a Windows computer to download and create the HP UEFI support environment because only .exe files - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 55
the categories listed to find your product. - or - Click Find Now to let HP automatically detect your product. 4. Select your computer, and then select your operating system. 5. In the Diagnostic section, follow the on-screen instructions to select and download the UEFI version you want. Downloading - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 56
8 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 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 57
Country/region Accredited agency Applicable note number 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. Power cord set fittings ( - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 58
Statement of memory volatility The purpose of this chapter is to provide general information regarding nonvolatile memory in HP Business PCs. This chapter also provides general instructions for restoring nonvolatile memory that can contain personal data after the system has been powered off and the - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 59
Hard Drive Tools. d. Under Utilities, select Secure Erase, select the hard drive storing the data you want to clear, and then follow the on-screen instructions to continue. Legacy BIOS Steps Use the steps for older versions of BIOS. NOTE: If you already completed the steps in Current BIOS steps on - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 60
Drive Tools. d. Under Utilities, select Secure Erase, select the hard drive storing the data you want to clear, and then follow the on-screen instructions to continue. - or - ● Clear the contents of the drive by using the following Disk Sanitizer command steps: IMPORTANT: If you clear data using - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 61
Hard Drive Tools. d. Under Utilities, select Disk Sanitizer, select the hard drive storing the data you want to clear, and then follow the on-screen instructions to continue. 55 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 62
Sure Start BIOS code, EC Embedded Controller. firmware, and critical PC configuration data for select platforms that support HP Sure Start. For more information, see Using HP Sure Start (select models only) on page 59. Yes Stores system RTC battery backed-up CMOS This memory is not write - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 63
MBytes (present in only specific ZBook and EliteBook models. For more information, go to http://www.hp.com/ support, and select your country. Select Drivers & Downloads, and then follow the on-screen instructions.) Bluetooth flash 2 Mbit No 802.11 WLAN EEPROM 4 Kbit to 8 Kbit No Web camera 64 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 64
the on-screen instructions. d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions. 2. What for the older BIOS architecture, but supports much of the legacy BIOS functionality. firmware management and recovery software. HP has provided options in Computer Setup - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 65
. The default configuration can be customized by advanced users. To access the latest documentation on HP Sure Start, go to http://www.hp.com/support, and select your country. Select Drivers & Downloads, and then follow the on-screen instructions. Using HP Sure Start (select models only) 59 - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 66
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 Chromebook 14-ak000 | Maintenance and Service Guide - Page 67
14 display enclosure removal 35 spare part numbers 14 HP Sure Start 59 I integrated webcam light, identifying 3 internal microphones, identifying 3 J jacks audio-in (microphone) 4 audio-out (headphone) 4 K keyboard/top cover removal 23 spare part numbers 11, 23 L labels 9 regulatory 9 service - HP Chromebook 14-ak000 | Maintenance and Service Guide - Page 68
number, computer 9 service considerations cables 19 connectors 19 plastic parts 18 service labels locating 9 serviceability, product description 2 , identifying 3 webcam/microphone module removal 36 spare part number 14, 37 wireless antennas disconnecting 31 wireless certification label 9 wireless
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HP Chromebook (model numbers 14-ak000
through 14-ak099)
HP Chromebook 14 G4
Maintenance and Service Guide
IMPORTANT! This document is intended for
HP authorized service providers only.