HP Pro c640 Chromebook Maintenance And Service Manual
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HP Pro c640 Chromebook Maintenance And Service Manual

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

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Summary of Contents for HP Pro c640 Chromebook

  • Page 1 Maintenance and Service Guide SUMMARY This guide provides information about spare parts, removal and replacement of parts, security, backing up, and more.
  • Page 2 Chrome, Chrome OS, Chromebook, Chromecast, bound by the terms of the HP End User License To access the latest user guides, go to Google, and Google Drive are trademarks of Agreement (EULA).
  • Page 3 Safety warning notice Reduce the possibility of heat-related injuries or of overheating the computer by following the practices described. WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface.
  • Page 4 Safety warning notice...

  • Page 5: Table Of Contents

    Table of contents 1 Product description ............................1 2 Components ..............................5 Right side ................................5 Left side ................................. 6 Display ..................................7 Keyboard area ................................ 8 Touchpad ............................. 8 Button, speakers and fingerprint reader .................... 9 Special keys ............................10 Bottom .................................
  • Page 6 Current BIOS steps ............................... 55 Nonvolatile memory usage ..........................57 Questions and answers ............................59 Using HP Sure Start (select products only) ......................60 9 Power cord set requirements ........................61 Requirements for all countries ..........................61 Requirements for specific countries and regions ....................61...
  • Page 7 Index ................................65...
  • Page 8 viii...

  • Page 9: Product Description

    Product components and their descriptions Category Description Product Name HP Pro c640 Chromebook Processors 10th Generation Intel® Core™ processors Intel Core i7-10610U (1.8 GHz [turbo up to 4.9 GHz], 4 cores, 8 MB L3 cache, 15 W) Intel Core i7-10510U (1.8 GHz [turbo up to 4.9 GHz], 4 cores, 8 MB L3 cache, 15 W) Intel Core i5-10310U (1.7 GHz [turbo up to 4.4 GHz], 4 cores, 6 MB L3 cache, 15 W)
  • Page 10 Integrated wireless options with dual antennas (M.2/PCIe) Intel Wi-Fi 6 AX201 + Bluetooth® 5 (non-vPro) (802.11ax 2 × 2, MU-MIMO, supporting gigabit file transfer speeds) Supports HP Connection Optimizer with Wi-Fi load balancing Support for Chromecast™ Supports turbo-lite antenna design (extended range wireless LAN)
  • Page 11 Table 1-1 Product components and their descriptions (continued) Category Description Power cord C5, 1 m Security Nano security lock slot Fingerprint sensor (select products only) H1 Secure Microcontroller Operating system Google® Chrome™ 64 Serviceability End user replaceable parts AC adapter...
  • Page 12 Chapter 1 Product description...

  • Page 13: Components

    Components Your computer features top-rated components. This chapter provides details about your components, where they are located, and how they work. Right side Use the illustration and table to identify the components on the right side of the computer. Table 2-1 Right-side components and their descriptions Component Description...

  • Page 14: Left Side

    Table 2-1 Right-side components and their descriptions (continued) Component Description Blinking amber: The battery has an error. ● ● Off: The battery is not charging. USB Type-C power connector and SuperSpeed Connects an AC adapter that has a USB Type-C connector, Plus port supplying power to the computer and, if needed, charging the computer battery.

  • Page 15: Display

    Table 2-2 Left-side components and their descriptions (continued) Component Description AC adapter and battery light White: The AC adapter is connected and the battery is fully ● charged. Amber: The AC adapter is connected and the battery is ● charging. Blinking amber: The battery has an error.

  • Page 16: Keyboard Area

    Table 2-3 Display components and their descriptions (continued) Component Description Camera(s) Allows(s) 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. Camera privacy cover By default, the camera lens is uncovered, but you can slide the camera privacy cover to block the camera's view.

  • Page 17: Button, Speakers And Fingerprint Reader

    Button, speakers and fingerprint reader Identify the button, speakers, and fingerprint reader. Table 2-5 Button, speakers, and fingerprint reader and their descriptions Component Description Speakers Produce sound. Vent Enables airflow to cool internal components. NOTE: The computer fan starts up automatically to cool internal components and prevent overheating.

  • Page 18: Special Keys

    Table 2-5 Button, speakers, and fingerprint reader and their descriptions (continued) Component Description IMPORTANT: To prevent fingerprint logon issues, be sure that when you register your fingerprint that all sides of your finger are registered by the fingerprint reader. Special keys Identify the special keys.

  • Page 19: Labels

    Table 2-7 Bottom component and description Component Description Vent Enables airflow 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. Labels The labels affixed to the computer provide information you may need when you troubleshoot system problems or travel internationally with the computer.
  • Page 20 Table 2-8 Service label components Component HP product name Product ID Serial number Warranty period Regulatory label(s)—Provide(s) regulatory information about the computer. ● Wireless certification label(s)—Provide(s) information about optional wireless devices and the approval ● markings for the countries or regions in which the devices have been approved for use.

  • Page 21: Illustrated Parts Catalog

    To identify the computer major components, use this illustration and table. 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 22 Table 3-1 Computer major component descriptions and part numbers Item Component Spare part number Display assembly NOTE: Display assemblies are spared only at the subcomponent level. Top cover with keyboard 3-coat paint, backlit, with fingerprint sensor M03451-xx1 3-coat paint, backlit, without fingerprint sensor M03452-xx1 Textured, not backlit, without fingerprint sensor M03453-xx1...

  • Page 23: Display Assembly Subcomponents

    Table 3-1 Computer major component descriptions and part numbers (continued) Item Component Spare part number Right door M00445-001 (13) Bottom cover M00432-001 Display assembly subcomponents To identify the display assembly subcomponents, use this illustration and table. Table 3-2 Display component descriptions and part numbers Item Component Spare part number...

  • Page 24: Cables

    Table 3-2 Display component descriptions and part numbers (continued) Item Component Spare part number Top bracket M00700-001 Hinges (left and right) M00440-001 Display cable M00702-001 Wireless antennas M00435-001 Hinge cover M00441-001 Camera cable M12614-001 Camera module M00442-001 (10) Display back cover M00439-001 Cables To identify the cables, use this illustration and table.
  • Page 25 Table 3-4 Miscellaneous part descriptions and part numbers Component Spare part number AC adapter, USB Type-C (nPFC, 1.8 m) 65 W L67440-001 45 W L43407-001 Screw Kit M00443-001 Bracket Kit (includes touchpad support bracket and fingerprint bracket) M12524-001 Power cord (C5, 1.0 m) Australia L19358-001 Brazil...
  • Page 26 Table 3-4 Miscellaneous part descriptions and part numbers (continued) Component Spare part number South Africa L19369-002 South Korea L19366-002 Switzerland L19370-002 Taiwan L19372-002 Thailand L19371-002 The United Kingdom L19373-002 Chapter 3 Illustrated parts catalog...

  • Page 27: Removal And Replacement Procedures Preliminary Requirements

    Removal and replacement procedures preliminary requirements Use this information to properly prepare to disassemble and reassemble the computer. Tools required You need the following tools to complete the removal and replacement procedures: Tweezers ● Nonconductive, nonmarking pry tool ● Magnetic Phillips P1 screwdriver ●...

  • Page 28: Workstation Guidelines

    IMPORTANT: Drives are fragile components. Handle them 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 29: Generating Static Electricity

    IMPORTANT: To prevent damage to the device when you remove or install 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 Personal grounding methods and equipment on page Avoid touching pins, leads, and circuitry.

  • Page 30: Personal Grounding Methods And Equipment

    ● foam. Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive. ● Recommended materials and equipment HP recommends certain materials and equipment to prevent static electricity. ● Antistatic tape ● Antistatic smocks, aprons, or sleeve protectors Conductive bins and other assembly or soldering aids ●...

  • Page 31: 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 32 Chapter 4 Removal and replacement procedures preliminary requirements...

  • Page 33: Removal And Replacement Procedures For Authorized Service Provider Parts

    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. You must remove, replace, or loosen as many as 50 screws when you service the parts described in this chapter.

  • Page 34: Battery

    Use a nonmarking, nonconductive tool (1) to release the edges of the bottom cover from the computer (2). Remove the bottom cover from the computer (3). To replace the bottom cover, reverse the removal procedures. Battery To remove the battery, use this procedure and illustration. Table 5-2 Battery description and part number Description...
  • Page 35 WARNING! To reduce potential safety issues, use only the user-replaceable battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP. IMPORTANT: Removing a battery that is the sole power source for the computer can cause loss of information.

  • Page 36: Speakers

    Remove the battery from the computer (3). To insert the battery, reverse the removal procedures. Speakers To remove the speakers, use this procedure and illustration. Table 5-3 Speaker description and part number Description Spare part number Speaker Kit M00436-001 Before removing the speakers, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 25).

  • Page 37: Touchpad

    Lift the tape that secures the speaker cable to the touchpad (3). Remove the speaker cable from the clips in the computer chassis (4). Remove the two Phillips M2.0 × 5.0 screws (5) that secure the speakers to the computer. NOTE: When installing the speakers, be sure that the gaskets are correctly installed in the speaker screw holes (6).
  • Page 38 Remove the touchpad: Remove the four Phillips M2.0 × 2.5 screws (1) that secure the touchpad bracket to the computer. Remove the touchpad bracket from the computer (2). Lift the tape that secures the speaker cable to the touchpad (1). Disconnect the cable from the ZIF connector on the touchpad (2).

  • Page 39: Fingerprint Sensor Board

    Remove the touchpad from the computer (5). Reverse this procedure to install the touchpad. Fingerprint sensor board To remove the fingerprint sensor board, use this procedure and illustration. Table 5-5 Fingerprint sensor board description and part number Description Spare part number Fingerprint sensor board M00438-001 Fingerprint sensor bracket (available in the Bracket Kit)

  • Page 40: Fan

    Remove the fingerprint sensor board from the computer (4). Reverse this procedure to install the fingerprint sensor board. To remove the fan, use this procedure and illustration. Table 5-6 Fan description and part number Description Spare part number Fan assembly M02014-001 Before removing the fan, follow these steps: Prepare the computer for disassembly...

  • Page 41: Heat Sink

    Remove the three Phillips M2.0 × 3.0 screws (2), and then remove the fan (3). Reverse this procedure to install the fan assembly. Heat sink To remove the heat sink, use these procedures and illustrations. Table 5-7 Heat sink descriptions and part numbers Description Spare part number Heat sink...
  • Page 42 Thoroughly clean the thermal material from the surfaces of the heat sink and the system board components each time the heat sink is removed. Replacement thermal material is included with the heat sink and system board spare part kits. The following illustration shows the replacement thermal material locations.

  • Page 43: Usb Board

    USB board To remove the USB board, use this procedure and illustration. Table 5-8 USB board description and part number Description Spare part number USB board M00433-001 USB board cables (included in Cable Kit) M00703-001 Before removing the USB board, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 25).
  • Page 44 Table 5-9 USB door description and part number Description Spare part number USB door, left M00444-001 USB door, right M00445-001 Before removing the USB door, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 25). Remove the bottom cover (Bottom cover on page 25).
  • Page 45 Remove the USB door from the computer (5). USB doors are available for both sides of the computer. Reverse this procedure to install the USB door. Component replacement procedures...

  • Page 46: System Board

    System board To remove the system board, use these procedures and illustrations. Table 5-10 System board descriptions and part numbers Description Spare part number Intel Core i7-10610U processor, 16 GB of system memory, and 128 GB of eMMC memory (models with a fingerprint M00695-001 sensor) Intel Core i7-10610U processor, 16 GB of system memory, and 64 GB of eMMC memory (models with a fingerprint...
  • Page 47 Fingerprint reader cable (ZIF) (9) ● ● Speaker cable (10) Remove the four Phillips M2.0 × 5.0 screws that secure the system board to the computer. Component replacement procedures...

  • Page 48: Display Assembly

    Lift the right side of the system board (1), and then pull the board up and to the right to remove it (2). If you need to remove the USB cables from the system board, disconect the bottom (1) and top (2) cables.

  • Page 49: Remove The Battery (See Battery

    Remove the battery (see Battery on page 26). Remove the heat sink (see Heat sink on page 33). Remove the display assembly: Disconnect the antennas from the WLAN module (1). Disconnect the camera cable (2). Disconnect the display cable (3). Remove the four Phillips M2.5 ×...
  • Page 50 Separate the computer from the display (3). If you need to replace display assembly subcomponents: Remove the three Phillips M2.0 × 3.0 screws (1) that secure the bezel to the display. Slide a flat tool (2) under each side of the bezel to remove it (3). The bezel is available as spare part number M00701-001.
  • Page 51 If you need to remove the hinge cover, squeeze near both ends of the cover (1), and then pull the cover off the hinges (2). The hinge cover is available as spare part number M00441-001. If you need to remove the display panel: Lift the bottom of the panel (1).
  • Page 52 Rotate the display panel over and place it next to the display enclosure. Display panels are available as the following spare part numbers: M00446-001: FHD, nontouch M00447-001: FHD, touch M00448-001: HD, nontouch M00449-001: HD, touch Disconnect the cable from the panel (1). Remove the panel (2).
  • Page 53 If you need to remove the display cable: ▲ Remove the cable from the right hinge and along the bottom of the display back cover. The display cable is available as spare part number M00702-001. If you need to remove the camera module and cable: Use a flat tool to lift up evenly across the camera module to remove it from the display back cover (1), and then remove the cable and module assembly (2).
  • Page 54 Lift the latch on the reverse ZIF connector on the camera module (1), and then disconnect the cable (2). The camera module is available as spare part number M00442-001. The camera cable is available as spare part number M12614-001. If you need to remove the hinges from the display: Remove the two Phillips broadhead M2.5 ×...
  • Page 55 If you need to remove the top display bracket from the display: Remove the four Phillips broadhead M2.0 × 2.5 screws (1) from the bracket. Remove the bracket from the display (2). The bracket is available as spare part number M00700-001. Component replacement procedures...

  • Page 56: Keyboard With Top Cover

    If you need to remove the antenna cables, remove the cables from the clips on the inside of the cover (1), and then peel the antennas off the cover to remove them (2). Antenna cables are available as spare part number M00435-001. The display back cover is available as spare part number M00439-001.
  • Page 57 Table 5-12 Spare part country codes (continued) For use in country or Spare part For use in country or Spare part For use in country or Spare part region number region number region number Czech Republic/Slovakia -FL1 Japan -291 Taiwan -AB1 Denmark, Finland, and -DH1...
  • Page 58 Chapter 5 Removal and replacement procedures for authorized service provider parts...

  • Page 59: Backing Up, Resetting, And Recovering

    Backing up, resetting, and recovering This chapter provides information about processes that are standard procedure for most products. Backing up You can back up your data to an optional USB flash drive or SD memory card or through Google Drive. For detailed information about creating a backup, go to http://www.support.google.com.

  • Page 60: Creating Recovery Media

    Creating recovery media Recovery media is used to recover the original operating system and software programs that were installed at the factory. Recovering the Chrome operating system To recover the Chrome operating system on your computer using the recovery media you created: Setting up your computer after a reset or recovery After a reset or recovery is complete, perform the initial setup process.

  • Page 61: Specifications

    Specifications This chapter provides specifications for your computer. Computer specifications This section provides specifications for your computer. When traveling with your computer, the computer dimensions and weights, as well as input power ratings and operating specifications, provide helpful information. Table 7-1 Computer specifications Metric U.S.
  • Page 62 Table 7-2 Display specifications Metric U.S. Active diagonal size 35.6 cm 14.0 in Resolution 1920 × 1080 (FHD) 1368 × 766 (HD) Surface treatment Antiglare (FHD panels) Brightview (FHD, HD panels) Brightness 250 nits (FHD panels) 220 nits (HD panels) Viewing angle UWVA (FHD panels) SVA (HD panels)

  • Page 63: Statement Of Memory Volatility

    No applications, features, or functionality were added to or installed on the system. ● Following system shutdown and removal of all power sources from an HP Business computer system, personal data can remain on volatile system memory (DIMMs) for a finite period of time and also remains in nonvolatile memory.
  • Page 64 If a DriveLock password is set, select the Security menu, and scroll down to Hard Drive Utilities under the Utilities menu. Select Hard Drive Utilities, select DriveLock, and then clear the check box for DriveLock password on restart. Select OK to proceed. Select the Main menu, and then select Reset BIOS Security to factory default.

  • Page 65: Nonvolatile Memory Usage

    HP Sure Start only) backup of The content is managed Embedded Controller. critical System solely by the HP Sure Start BIOS code, EC Embedded Controller. firmware, and critical computer configuration data for select...
  • Page 66 How is this memory memory type Amount (Size) data? is removed? memory? memory? write-protected? on the HP website; go to http://www.hp.com/ support. Select Find your product, and then follow the on-screen instructions. Intel Management 1.5 MB or 7 MB Stores...

  • Page 67: Questions And Answers

    HP has provided options in Computer Setup (BIOS) to allow you to run in legacy BIOS, if required by the operating system. Examples of this requirement would be if you upgrade or downgrade the OS.

  • Page 68: Using Hp Sure Start (Select Products Only)

    BIOS for attacks or corruption. If the BIOS becomes corrupted or is attacked, HP Sure Start restores the BIOS to its previously safe state, without user intervention. Those select computer models ship with HP Sure Start configured and enabled. HP Sure Start is configured and already enabled so that most users can use the HP Sure Start default configuration.

  • Page 69: Power Cord Set Requirements

    Power cord set requirements This chapter provides power cord requirements for countries and regions. The wide-range input feature of the computer permits it to operate from any line voltage from 100 V ac to 120 V ac, or from 220 V ac 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 70 Table 9-1 Power cord requirements for specific countries and regions (continued) Country/region Accredited agency Applicable note number India Israel Italy Japan The Netherlands KEMA New Zealand SANZ Norway NEMKO The People's Republic of China Saudi Arabia SASO Singapore South Africa SABS South Korea Sweden...

  • Page 71: 10 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 72 Chapter 10 Recycling...
  • Page 73 15 Bluetooth label 11 illustrated 15 spare part number 15 bottom components 10 spare part number 15 HP Sure Start 55, 60 bottom cover illustrated 13 removal 25 electrostatic discharge (ESD) 19, 20 illustrated parts catalog 13 spare part number 13, 25...
  • Page 74 left side components 6 USB door lights Screw Kit, spare part number 16 removal 35 camera 7 serial number, computer 11 spare part numbers 35 service labels, locating 11 USB ports setting up computer after reset or identifying 6 memory recovery 52 USB Type-C port nonvolatile 55...

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