Related Manuals for HP Chromebook 14a Series
Summary of Contents for HP Chromebook 14a Series
- Page 1 Maintenance and Service Guide HP Chromebook 14a IMPORTANT! This document is intended for HP authorized service providers only.
- Page 2 Intel is a trademark of Intel Corporation or its bound by the terms of the HP End User License To access the latest user guides, go to subsidiaries in the U.S. and/or other countries.
- 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...
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Page 5: Table Of Contents
Table of contents 1 Product description ............................1 2 Getting to know your computer ........................3 Right side ................................3 Left side ................................. 4 Display ..................................5 Keyboard area ................................ 6 Touchpad ............................. 6 Speakers .............................. 6 Special keys ............................7 Action keys ............................ - Page 6 Preparation for disassembly ......................20 Bottom cover ............................. 21 Battery ............................... 23 WLAN module ............................ 24 Speaker .............................. 26 Touchpad ............................27 USB board ............................29 System board ............................ 30 Power connector (DC in) cable ......................33 Display assembly ..........................34 Keyboard with top cover ........................
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Page 7: Product Description
Product components and their descriptions Category Description Product Name HP Chromebook™ 14a Model numbers: 14a-na0000 ~ 14a-na0999 CTO Model: 14at-na000 Processor Intel® Pentium® Silver Processor N5030 (1.1 GHz, turbo up to 3.1 GHz, 2400 MHz FSB, 4 MB L2 cache, quad core, 6 W;... - Page 8 Table 1-1 Product components and their descriptions (continued) Category Description Video HP Wide Vision HD Camera 720p by 30 frames per second Dual-array digital microphone with appropriate software: echo cancellation, noise suppression, Google™ Assistant Support Wireless networking Integrated wireless option with dual antennas (M.2/PCIe) Realtek RTL8822CE 802.11ac 2 ×...
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Page 9: Getting To Know Your Computer
Getting to know your computer Your computer features top-rated components. This chapter provides details about your components, where they are located, and how they work. Right side Table 2-1 Right-side components and their descriptions Component Description USB Type-C power connector and port Connects an AC adapter that has a USB Type-C connector, supplying power to the computer and, if needed, charging the computer battery. -
Page 10: Left Side
Left side Table 2-2 Left-side components and their descriptions Component Description Audio-out (headphone)/Audio-in Connects optional powered stereo speakers, headphones, earbuds, a headset, (microphone) combo jack or a television audio cable. Also connects an optional headset microphone. This jack does not support optional standalone microphones. WARNING! To reduce the risk of personal injury, adjust the volume before putting on headphones, earbuds, or a headset. -
Page 11: Display
Display Table 2-3 Display components and their descriptions Component Description WLAN antennas* Send and receive wireless signals to communicate with wireless local area networks (WLANs). Internal microphones Record sound. Camera Allows you to video chat, record video, and record still images. NOTE: Camera functions vary depending on the camera hardware and software installed on your product. -
Page 12: Keyboard Area
Keyboard area Touchpad Table 2-4 Touchpad and its description Component Description Touchpad zone Reads your finger gestures to move the pointer or activate items on the screen. Speakers Table 2-5 Speakers and their description Component Description Speakers (2) Produce sound. Chapter 2 Getting to know your computer... -
Page 13: Special Keys
Special keys Table 2-6 Special keys and their descriptions Component Description Activates certain computer functions when pressed in combination with other keys, such as or Shift. Action keys Execute frequently used system functions. See Action keys on page Power button ●... -
Page 14: Action Keys
Action keys An action key performs the function indicated by the icon on the key. To determine which keys are on your product, see Special keys on page To use an action key, press and hold the key. ▲ For more information on action keys and keyboard shortcuts, go to https://support.google.com/chromebook/ answer/183101. -
Page 15: Labels
Locate this information before you contact support. Table 2-8 Service label components Component HP product name Model number Product ID Serial number Warranty period Regulatory label(s)—Provide(s) regulatory information about the computer. -
Page 16: Illustrated Parts Catalog
Computer major components NOTE: HP continually improves and changes product parts. For complete and current information about supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. NOTE: Details about your computer, including model, serial number, product key, and length of warranty, are on the service tag at the bottom of your computer. - Page 17 Table 3-1 Computer major components and their descriptions Item Component Spare part number Display assembly NOTE: Display assemblies are offered as spare parts only at a subcomponent level. Keyboard with top cover For a detailed list of country codes, see Keyboard with top cover on page Snow white;...
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Page 18: Cables
Table 3-1 Computer major components and their descriptions (continued) Item Component Spare part number Power connector cable L99191-001 Thermal pad L76600-001 WLAN module (Realtek RTL8822CE 802.11ac 2 × 2 Wi-Fi + Bluetooth 5.0) L44796-005 (10) Battery (2 cell, 47 Whr) L75783-005 (11) Bottom cover... -
Page 19: Display Assembly Subcomponents
Display assembly subcomponents Table 3-3 Display components and their descriptions Item Component Spare part number Display bezel Ash grey L91534-001 Mineral silver L91535-001 Display panel (includes display tape and panel adhesive) FHD, antiglare L91591-001 FHD, antiglare, Touch-on Panel (TOP) L91592-001 HD, antiglare L91593-001 HD, BrightView, Touch-on Panel (TOP) -
Page 20: Miscellaneous Parts
Table 3-3 Display components and their descriptions (continued) Item Component Spare part number Display back cover Mineral silver L91530-001 Forest teal L91529-001 Ceramic white L91531-001 Miscellaneous parts Table 3-4 Miscellaneous parts and their descriptions Component Spare part number AC adapter (USB Type-C, 45 W, nPFC, 3 pin, 1.8 m) L43407-001 Screw Kit L91542-001... -
Page 21: Removal And Replacement Procedures Preliminary Requirements
Removal and replacement procedures preliminary requirements Tools required You need the following tools to complete the removal and replacement procedures: Nonmarking, nonconductive pry tool ● Magnetic Phillips P1 screwdriver ● Tweezers ● Service considerations The following sections include some of the considerations that you must keep in mind during disassembly and assembly procedures. -
Page 22: Drive Handling
Drive handling IMPORTANT: Drives are fragile components that must be handled with care. To prevent damage to the computer, damage to a drive, or loss of information, observe these precautions: Before removing or inserting a hard drive, shut down 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 23: Generating Static Electricity
IMPORTANT: To prevent damage to the device when you are removing or installing internal components, observe these precautions: Keep components in their electrostatic-safe containers until you are ready to install them. Before touching an electronic component, discharge static electricity by using the guidelines described in this section. -
Page 24: Personal Grounding Methods And Equipment
Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive. ● Recommended materials and equipment HP recommends the following materials and equipment to prevent static electricity: ● Antistatic tape ● Antistatic smocks, aprons, or sleeve protectors Conductive bins and other assembly or soldering aids ●... -
Page 25: Packaging And Transporting Guidelines
Static-dissipative table or floor mats with hard tie to ground ● ● Field service kits ● Static awareness labels ● Wrist straps and footwear straps providing 1 MΩ ±10% resistance ● Material handling packages ● Conductive plastic bags ● Conductive plastic tubes Conductive tote boxes ●... -
Page 26: Removal And Replacement Procedures For Authorized Service Provider Parts
Accessing these parts can damage the computer or void the warranty. NOTE: HP continually improves and changes product parts. For complete and current information about supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Component replacement procedures There are as many as 45 screws that must be removed, replaced, and/or loosened when servicing the computer. -
Page 27: Bottom Cover
Bottom cover Table 5-1 Bottom cover descriptions and part numbers Description Spare part number Bottom cover L91523-001 Rubber feet L91524-001 Before removing the bottom cover, follow this step: Prepare the computer for disassembly (Preparation for disassembly on page 20). ▲ Remove the bottom cover: Peel the two rubber strips (1) and remove the two screw covers (2) from the bottom cover (1). - Page 28 Remove the bottom cover from the computer (2). Reverse this procedure to install the bottom cover. Chapter 5 Removal and replacement procedures for authorized service provider parts...
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Page 29: Battery
Battery Table 5-2 Battery description and part number Description Spare part number Battery, 2 cell, 47 Whr L75783-005 Before removing the battery, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 20). Remove the bottom cover (see Bottom cover on page 21). -
Page 30: Wlan Module
WLAN module Table 5-3 WLAN module description and part number Description Spare part number Realtek RTL8822CE 802.11ac 2 × 2 Wi-Fi + Bluetooth 5.0 L44796-005 IMPORTANT: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region. - Page 31 NOTE: If the WLAN antenna is not connected to the terminal on the WLAN module, a protective sleeve must be installed on the antenna connector, as shown in the following illustration. Reverse this procedure to install the WLAN module. Component replacement procedures...
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Page 32: Speaker
Speaker Table 5-4 Speaker description and part number Description Spare part number Speaker L91528-001 Before removing the speaker, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 20). Remove the bottom cover (see Bottom cover on page 21). -
Page 33: Touchpad
Touchpad Table 5-5 Touchpad description and part number Description Spare part number Touchpad L91526-001 NOTE: The touchpad spare part kit does not include the cable. The cable is available as spare part number L91527-001. Before removing the touchpad, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 20). - Page 34 Remove the three Phillips M2.0 × 2.0 screws (3) that secure the touchpad to the computer, and then remove the touchpad (4). Reverse this procedure to install the touchpad. Chapter 5 Removal and replacement procedures for authorized service provider parts...
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Page 35: Usb Board
USB board Table 5-6 USB board description and part number Description Spare part number USB board L91522-001 NOTE: The USB board spare part kit does not include the cables. The high speed USB cable is available as spare part number L73309-001. The low speed USB cable is available as spare part number L73310-001. -
Page 36: System Board
System board Table 5-7 System board descriptions and part numbers Description Spare part number Intel Pentium Silver N5030 processor, 8 GB system memory, and 128 GB eMMC memory L91521-001 Intel Pentium Silver N5030 processor, 4 GB system memory, and 64 GB eMMC memory L91520-001 Intel Pentium Silver N5000 processor, 8 GB system memory, and 128 GB eMMC memory M03106-001... - Page 37 Touchpad cable (ZIF) (7) ● ● Flat USB board cable from bottom of system board (ZIF) (8) ● Flat USB board cable from bottom of system board (ZIF) (9) Remove the six Phillips M2.0 × 3.5 screws (1) that secure the system board to the computer. Lift the left side of the system board upward (2), and then pull the system board to the left to remove it from the computer (3).
- Page 38 Reverse this procedure to install the system board. When replacing the system board, be sure to replace the thermal pad in the location as shown in the following illustration. Chapter 5 Removal and replacement procedures for authorized service provider parts...
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Page 39: Power Connector (Dc In) Cable
Power connector (DC in) cable Table 5-8 Power connector cable description and part number Description Spare part number Power connector cable L99191-001 Before removing the power connector cable, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 20). -
Page 40: Display Assembly
Display assembly NOTE: Display assemblies are offered as spare parts only at a subcomponent level. Before removing the display assembly, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 20). Remove the bottom cover (see Bottom cover on page 21). - Page 41 Separate the display from the computer (3). If it is necessary to replace display assembly subcomponents: IMPORTANT: Be careful not to bend or break the narrow sections of the bezel when removing. Release the top edge of the display bezel (1) from the display assembly. Release the left and right edges of the display bezel (2) from the display assembly.
- Page 42 Remove the display bezel from the display (4). The display bezel is available as spare part number L91534-001 in ash grey and L91535-001 in mineral silver. If it is necessary to remove the display panel: Tape behind the left and right sides of the display panel secures the panel to the display. Use tweezers to grasp the tape, and then roll the tape around the tweezers (1) as you pull the tape from behind the panel (2).
- Page 43 Rotate the display panel over and place it next to the display back cover (3). Component replacement procedures...
- Page 44 Lift the tape from the connector on the rear of the panel (1), and then disconnect the cable from the panel (2). Display panels are available as the following spare part numbers: L91591-001: FHD, antiglare L91592-001: FHD, antiglare, Touch-on Panel (TOP) L91593-001: HD, antiglare L91594-001: HD, BrightView, Touch-on Panel (TOP) The display cable is available as the following spare part numbers:...
- Page 45 If it is necessary to remove the display hinges: Remove the Phillips M2.0 × 2.5 screw (1) from the top of each hinge. Remove the three Phillips M2.5 × 2.5 screws (2) from the bottom of each hinge. Remove the display hinges from the display back cover (3). The display hinges are available as spare part number L91537-001.
- Page 46 If necessary, remove the top bracket from the display back cover. For installation, use the following illustration to determine proper cable routing around the hinge. If it is necessary to remove the webcam cable: Remove the cable from its routing path along the bottom of the display back cover (1). Chapter 5 Removal and replacement procedures for authorized service provider parts...
- Page 47 Peel the cable off the inside of the display back cover (2) to remove it. The webcam cable is available as spare part number L91541-001. If it is necessary to remove the wireless antennas: Peel the antennas off the top of the display back cover (1). Remove the antenna cables from the channels on the sides and bottom of the display back cover (2), and then remove the antennas and cables (3).
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Page 48: Keyboard With Top Cover
Keyboard with top cover The top cover with keyboard remains after removing all other spare parts from the computer. In this section, the first table provides the main spare part number for the top cover. The second table provides the keyboard country codes. Table 5-9 Keyboard/top cover description and part number Description... -
Page 49: Specifications
Specifications Computer specifications Table 6-1 Computer specifications Metric U.S. Computer dimensions Width 325.5 mm 12.8 in Depth 218.5 mm 8.6 in Height 17.9 mm 0.7 in Weight (lowest configuration) 1325 g 2.9 lbs Input power rating Operating voltage and current 18.5 V dc @ 3.5 A –... -
Page 50: 35.6 Cm (14.0 In) Display Specifications
35.6 cm (14.0 in) display specifications Table 6-2 Display specifications Metric U.S. Active diagonal size 35.6 cm 14.0 in Resolution FHD: 1920 × 1080 HD: 1366 × 768 Surface treatment Antiglare or BrightView Brightness HD: 220 nits FHD: 250 nits Viewing angle HD: SVA FHD: UWVA... -
Page 51: 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 V ac, or from 220 to 240 V 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 52: Requirements For Specific Countries And Regions
Requirements for specific countries and regions Table 7-1 Power cord requirements for specific countries and regions Country/region Accredited agency Applicable note number Argentina IRAM Australia Austria Belgium CEBEC Brazil ABNT Canada Chile Denmark DEMKO Finland FIMKO France Germany India Israel Italy Japan The Netherlands... - Page 53 Table 7-1 Power cord requirements for specific countries and regions (continued) Country/region Accredited agency Applicable note number The flexible cord must be Type SVT/SJT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type with a NEMA 5-15P (15 A, 125 V ac) or NEMA 6-15P (15 A, 250 V ac) configuration. CSA or C-UL mark. UL file number must be on each element.
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Page 54: 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 website at http://www.hp.com/recycle. -
Page 55: Index
Index transporting 19 AC adapter and battery light, camera workstation 16 identifying 3, 4 identifying 5 action keys 8 camera light, identifying 5 hinge back 8 cautions removal 39 brightness down 8 electrostatic discharge 16 spare part number 39 brightness up 8 components hinges forward 8... - Page 56 microphone video 2 product description 2 wireless networking 2 USB board model name 1 product name 1 removal 29 mute action key 8 product name and number, spare part numbers 11, 29 computer 9 USB cable spare part number 12 next window action key 8 USB SuperSpeed port with Sleep and regulatory information...