Related Manuals for HP Pro c645 Chromebook
Summary of Contents for HP Pro c645 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 Bluetooth is a trademark owned by its bound by the terms of the HP End User License proprietor and used by HP Inc. under license. Agreement (EULA). If you do not accept these...
- 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...
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Page 5: Table Of Contents
Grounding the work area ........................19 Recommended materials and equipment ..................19 Cleaning your computer ............................20 Enabling HP Easy Clean (select products only) ................. 20 Removing dirt and debris from your computer ................20 Cleaning your computer with a disinfectant ..................21 Caring for wood veneer (select products only) ................. - Page 6 8 Statement of memory volatility ........................50 Current BIOS steps ............................... 50 Nonvolatile memory usage ..........................52 Questions and answers ............................54 Using HP Sure Start (select products only) ......................55 9 Power cord set requirements ........................56 Requirements for all countries ..........................56...
- Page 7 Requirements for specific countries and regions ....................56 10 Recycling ..............................58 Index ................................59...
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Page 9: Product Description
Product components and their descriptions Category Description Product Name HP Pro c645 Chromebook Processors AMD® processors AMD Ryzen™ 7-3700C with Radeon Vega™ 10 Graphics (2.3 GHz [up to 4.0 GHz], 4 cores, 6 MB cache, 15 W) AMD Ryzen 5-3500C with Radeon Vega 8 Graphics (2.1 GHz [up to 3.7 GHz], 4 cores, 6 MB cache, 15 W) AMD Ryzen 3-3250C with Radeon Vega 3 Graphics (2.6 GHz [up to 3.5 GHz], 2 cores, 5 MB cache, 15 W) - Page 10 Island style, 3-coat paint, backlit, fingerprint sensor Island style, 3-coat paint, backlit, without fingerprint sensor Power requirements Battery 3 cell, 58 Whr, polymer, HP Long Life, fast charge AC adapter, USB Type-C 65 W, nPFC, straight 45 W, nPFC, straight Power cord C5, 1 m (3.3 ft)
- Page 11 Table 1-1 Product components and their descriptions (continued) Category Description Serviceability End user replaceable parts AC adapter...
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Page 12: Components
Components Your computer features top-rated components. This chapter provides details about your components, where they are located, and how they work. Right 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 13: Left
Table 2-1 Right-side components and their descriptions (continued) Component Description Off: The battery is not charging. ● USB Type-C power connector and Connects an AC adapter that has a USB Type-C connector, SuperSpeed port supplying power to the computer and, if needed, charging the computer battery. -
Page 14: Display
Table 2-2 Left-side components and their descriptions (continued) Component Description Connects a USB device, provides high-speed data transfer, and (for select products) charges small devices (such as a smartphone) when the computer is on or in Sleep mode. NOTE: Use a standard USB Type-C charging cable or cable adapter (purchased separately) when charging a small external device. -
Page 15: Keyboard Area
Table 2-3 Display components and their descriptions (continued) Component Description Internal microphones Record sound. Camera light On (white): The camera is in use. Off: The camera is turned off by the software. 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 16: Button, Speakers, And Fingerprint Reader
Table 2-4 Touchpad component and description Component Description Touchpad zone Reads your finger gestures to move the pointer or activate items on the screen. Button, speakers, and fingerprint reader Speakers are located on the right and left of the keyboard. Fingerprint readers can be located on the touchpad, on a side panel of the computer, or on the top cover below the keyboard. -
Page 17: Special Keys
Table 2-5 Button, speakers, and fingerprint reader and their descriptions (continued) Component Description At the bottom-right of your Chromebook™ screen, select the displayed time. Select Settings. From the Device menu, select Power. Select an option from the list. Fingerprint reader The fingerprint reader allows you to unlock the computer screen or to resume computer operations. - Page 18 Your service label will resemble one of the following examples. Refer to the illustration that most closely matches the service label on your computer. Table 2-7 Service label components Component HP product name Model number Warranty period Product ID Serial number...
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Page 19: 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 20 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 Backlit M31759-xx1 Backlit, fingerprint sensor M31760-xx1 Not backlit M31761-xx1 Not backlit, fingerprint sensor M31762-xx1 Speaker Kit M00436-001...
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Page 21: Display Assembly Subcomponents
Table 3-1 Computer major component descriptions and part numbers (continued) Item Component Spare part number Fingerprint sensor board (includes cable) M31755-001 (10) Touchpad bracket (available in the Bracket Kit) M12524-001 (11) Touchpad (includes rubber and protective tape) M41141-001 NOTE: The touchpad cable is available in the Cable Kit as spare part number M34155-001. (12) M02014-001 (13) -
Page 22: Miscellaneous Parts
Table 3-2 Display component descriptions and part numbers Item Component Spare part number Display bezel M00701-001 Display panel FHD, nontouch M34158-001 FHD, touch M34159-001 HD, nontouch M34160-001 HD, touch M34161-001 Top bracket M00700-001 Hinges (left and right) M00440-001 Display cable M00702-001 Wireless antennas M00435-001... - Page 23 Table 3-3 Miscellaneous part descriptions and part numbers (continued) Component Spare part number India L19363-001 Israel L19362-001 Italy L19364-001 Japan L19365-001 North America L19367-001 People's Republic of China L19368-001 South Africa L19369-001 South Korea L19366-001 Switzerland L19370-001 Taiwan L19372-001 Thailand L19371-001 The United Kingdom L19373-001...
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Page 24: 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 25: Electrostatic Discharge Information
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 26: Preventing Electrostatic Damage To Equipment
Table 4-1 Static electricity occurrence based on activity and humidity (continued) Relative humidity Walking across vinyl floor 3,000 V 5,000 V 12,000 V Motions of bench worker 400 V 800 V 6,000 V Removing DIPs (dual in-line packages) from plastic tube 400 V 700 V 2,000 V... -
Page 27: Grounding The Work Area
Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ● Avoid contact with pins, leads, or circuitry. Recommended materials and equipment HP recommends certain materials and equipment to prevent static electricity. Antistatic tape ● ● Antistatic smocks, aprons, or sleeve protectors ●... -
Page 28: Cleaning Your Computer
Keep liquids away from the product. Avoid getting moisture in any openings. If liquid makes its way inside your HP product, it can cause damage to the product. Do not spray liquids directly on the product. Do not use aerosol sprays, solvents, abrasives, or cleaners containing hydrogen peroxide or bleach that might damage the finish. -
Page 29: Cleaning Your Computer With A Disinfectant
Keep liquids away from the product. Avoid getting moisture in any openings. If liquid makes its way inside your HP product, it can cause damage to the product. Do not spray liquids directly on the product. Do not use aerosol sprays, solvents, abrasives, or cleaners containing hydrogen peroxide or bleach that might damage the finish. -
Page 30: Caring For Wood Veneer (Select Products Only)
Caring for wood veneer (select products only) Your product might feature high-quality wood veneer. As with all natural wood products, proper care is important for best results over the life of the product. Because of the nature of natural wood, you might see unique variations in the grain pattern or subtle variations in color, which are normal. -
Page 31: 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 32: Battery
Use a nonmarking, nonconductive tool near the hinges (1) to release 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 33 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.
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Page 34: Solid-State Drive
Solid-state drive To remove the M.2 solid-state drive, use this procedure and illustration. Table 5-3 Solid-state drive description and part number Description Spare part number 128 GB, PCIe M11040-005 Before removing the solid-state drive, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 23). -
Page 35: Touchpad
Remove the speakers: Disconnect the speaker cable from the system board (1). Remove the Phillips M2.0 × 5.0 screw (2) that secures each speaker to the computer. Lift the bottom of the speakers up, and then pull the speaker toward the front to remove the tab on top of the speaker from the slot that holds it in place (3). - Page 36 Remove the bracket from the computer (2). Lift the tape that covers the touchpad (1). Disconnect the cable from the ZIF connector on the touchpad (2). Remove the protective shielding from the top of the touchpad (3). Remove the three Phillips M2.0 × 2.0 screws (4) that secure the touchpad to the computer. Remove the touchpad from the computer (5).
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Page 37: Fingerprint Sensor Board
Fingerprint sensor board To remove the fingerprint sensor board, use this procedure and illustration. Table 5-6 Fingerprint sensor board description and part number Description Spare part number Fingerprint sensor board M31755-001 Fingerprint sensor bracket (available in the Bracket Kit) M12524-001 Before removing the fingerprint sensor board, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page... -
Page 38: Heat Sink
Table 5-7 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 (Preparation for disassembly on page 23). Remove the bottom cover (Bottom cover on page 23). - Page 39 Prepare the computer for disassembly (Preparation for disassembly on page 23). Remove the bottom cover (Bottom cover on page 23). Remove the battery (see Battery on page 24). Remove the heat sink: In the order indicated on the heat sink, remove the four Phillips M2.0 × 2.0 screws (1), and then remove the heat sink from the computer (2).
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Page 40: Lock Bracket
Lock bracket To remove the lock bracket, use this procedure and illustration. Table 5-9 Lock bracket description and part number Description Spare part number Lock bracket M00433-001 Before removing the lock bracket, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 23). -
Page 41: Usb Door
Before removing the USB board, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page 23). Remove the bottom cover (Bottom cover on page 23). Remove the battery (see Battery on page 24). Remove the fan (see Fan on page 29). -
Page 42: System Board
Remove the USB door: Insert a removal tool under the back of the USB door, and then lift to remove the USB door from the ▲ computer. USB doors are available for both sides of the computer. Use the same removal and replacement procedures for both doors. - Page 43 Table 5-12 System board descriptions and part numbers (continued) Description Spare part number AMD Athlon Silver 3050C, 8 GB of system memory, 64 GB of eMMC memory (models with a fingerprint M31743-001 sensor) AMD Athlon Silver 3050C, 4 GB of system memory, 32 GB of eMMC memory (models without a fingerprint M31742-001 sensor) Before removing the system board, follow these steps:...
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Page 44: Display Assembly
Lift the right side of the system board (2), and then pull the board up and to the right to remove it (3). Reverse this procedure to install the system board. Display assembly To remove and disassemble the display assembly, use these procedures and illustrations. Before removing the display panel, follow these steps: Prepare the computer for disassembly (Preparation for disassembly on page... - Page 45 Remove the camera cable and one antenna cable from their routing at the top of the chassis (6). Remove the four Phillips M2.5 × 4.5 screws (1) that secure the display to the computer. Open the computer to open the hinges (2). Separate the computer from the display (3).
- Page 46 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 47 Rotate the display panel over and place it next to the display enclosure. Display panels are available as the following spare part numbers: M34158-001: FHD, nontouch M34159-001: FHD, touch M34160-001: HD, nontouch M34161-001: HD, touch Disconnect the cable from the panel (1). Remove the panel (2).
- Page 48 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 49 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 M31758-001. 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 50 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. Chapter 5 Removal and replacement procedures for authorized service provider parts...
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Page 51: 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 52 Table 5-14 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...
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Page 53: Backing Up, Resetting, And Recovering
Backing up, resetting, and recovering This chapter provides information about the standard procedures of backing up your personal data, resetting your computer to original factory conditions, and recovering your operating system with the Chromebook Recovery Utility. 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 54: Installing The Chromebook Recovery Utility
NOTE: For more information about performing a system recovery on your computer, go to http://www.support.google.com. Before you begin the recovery process, you need the following prerequisites: A USB flash drive or SD memory card with a capacity of 4 GB or greater. All data is erased from this ●... -
Page 55: Setting Up Your Computer After A Reset Or Recovery
NOTE: If you need to cancel the recovery during the verification process, press and hold the power button until the computer turns off. Do not disrupt the system recovery process after the verification step is complete. NOTE: If an error message is displayed, you might need to run the Chrome Recovery Utility again or use a different USB flash drive or SD memory card. -
Page 56: 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 57 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 Brightness 250 nits Viewing angle UWVA (FHD panels) SVA (HD panels) Backlight WLED Display panel interface 35.6 cm (14.0 in) display specifications...
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Page 58: 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 59 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.
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Page 60: 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 61 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...
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Page 62: 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 63: 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 64: 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 three-conductor power cord set included with the computer meets the requirements for use in the country or region where the equipment is purchased. - Page 65 Table 9-1 Power cord requirements for specific countries and regions (continued) Country/region Accredited agency Applicable note number India Israel Italy Japan Netherlands KEMA New Zealand SANZ Norway NEMKO People's Republic of China Saudi Arabia SASO Singapore South Africa SABS South Korea Sweden SEMKO Switzerland...
- Page 66 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 67 13 illustrated 13 spare part number 11 display cable spare part number 13 Bluetooth label 9 illustrated 13 HP Sure Start 50, 55 bottom cover spare part number 13 illustrated 11 display panel removal 23 illustrated 13...
- Page 68 lights regulatory information removal 27 AC adapter and battery 4, 6 regulatory label 9 spare part number 11 camera 7 wireless certification labels 9 spare part numbers 27 lock bracket removal and replacement touchpad zone, identifying 7 removal 32 procedures 23 transporting guidelines 16, 22 spare part number 32 solid-state drive 26...