HP Chromebook Pro c640 G2, Maintenance And Service Manual

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: ...d services are set forth in the express warranty statements accompanying such 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 June 2021 Document Part Number M73765 001 Product notice This guide describes features that are common to most models Some fe...

Page 3: ...ct the computer air vents Use the computer 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 come into contact with the skin or a soft surface such as pillows or rugs or clothing during operation The computer and the AC adapter comply with the...

Page 4: ...iv Safety warning notice ...

Page 5: ... 18 Service considerations 18 Plastic parts 18 Cables and connectors 18 Drive handling 18 Electrostatic discharge information 19 Generating static electricity 19 Preventing electrostatic damage to equipment 20 Personal grounding methods and equipment 20 Grounding the work area 21 Recommended materials and equipment 21 Cleaning your computer 22 Enabling HP Easy Clean select products only 22 Removin...

Page 6: ...40 Keyboard with top cover 47 6 Backing up resetting and recovering 49 Backing up 49 Resetting 49 Recovering 49 Installing the Chromebook Recovery Utility 50 Creating recovery media 50 Recovering the Chrome operating system 50 Setting up your computer after a reset or recovery 51 Erasing and reformatting the recovery media 51 7 Specifications 52 Computer specifications 52 35 6 cm 14 0 in display s...

Page 7: ...9 Power cord set requirements 60 Requirements for all countries 60 Requirements for specific countries and regions 60 10 Recycling 62 Index 63 vii ...

Page 8: ...viii ...

Page 9: ...e frequency up to 3 70 GHz with Intel Turbo Boost Technology 8 MB cache 4 cores Intel Core i3 1115G4 3 00 GHz base frequency up to 4 10 GHz with Intel Turbo Boost Technology 6 MB cache 2 cores Intel 7505 Pentium Gold 2 00 GHz base frequency up to 3 50 GHz with Intel Turbo Boost Technology 4 MB cache 2 cores Intel Celeron 6305 1 80 GHz base frequency 4 MB cache 2 cores Graphics Internal graphics In...

Page 10: ...er Wireless Integrated wireless options with dual antennas Intel Wi Fi 6 AX201 Bluetooth 5 non vPro Media card reader Supports microSD SDHC SDXC up to UHS 104 Push push insertion removal Ports HDMI v2 0 Audio out headphone audio in microphone combo jack 2 USB 3 2 Gen2 Type C 2 USB 3 2 Gen2 Type A Keyboard pointing devices Keyboard Full size island style textured not backlit with or without fingerp...

Page 11: ...d Category Description 45 W nPFC straight 1 8 m 6 ft Power cord C5 1 m 3 3 ft Security Fingerprint sensor select products only Camera privacy cover H1 Secure Microcontroller Operating system Google Chrome 64 Serviceability End user replaceable parts AC adapter 3 ...

Page 12: ...o remove a card Press in on the card and then remove it from the memory card reader 2 Audio out headphone Audio in microphone combo jack Connects optional powered stereo speakers headphones earbuds a headset 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 vol...

Page 13: ...nsfer 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 A charging cable or cable adapter purchased separately when charging a small external device Left Use the illustration and table to identify the components on the left side of the computer Table 2 2 Left side components and their descriptions Component Desc...

Page 14: ...device that has a USB Type C connector providing DisplayPort output 4 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 Off The battery is not charging 5 Security cable slot Attaches an optional security cable to the computer NOTE The security cable is designed to act as a deterrent but it m...

Page 15: ...o block the camera s view To use the camera slide the camera privacy cover in the opposite direction to reveal the lens 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 cou...

Page 16: ...peakers and fingerprint reader and their descriptions Component Description 1 Speakers 2 Produce sound 2 Fingerprint reader select products only The fingerprint reader allows you to unlock the computer screen or to resume computer operations The reader does not function as a login device Touch your finger to the fingerprint reader Special keys Use the illustration and table to locate the special k...

Page 17: ...y to exit Hibernation IMPORTANT Pressing and holding down the power button results in the loss of unsaved information If the computer has stopped responding and shutdown procedures are ineffective press and hold the power button for at least 10 seconds to turn off the computer 4 Search key Opens a search box Bottom Use the illustration and table to identify the bottom component Table 2 7 Bottom co...

Page 18: ...and Service label Provides important information to identify your computer When contacting support you might be asked for the serial number the product number or the model number Locate this information before you contact support 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 8 Service la...

Page 19: ...iod 4 Product ID 5 Serial number Regulatory labels Provide regulatory information about the computer Wireless certification labels Provide information about optional wireless devices and the approval markings for the countries or regions in which the devices have been approved for use Labels 11 ...

Page 20: ... 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 12 Chapter 3 Illustra...

Page 21: ...Core i5 1145G7 processor 8 GB of system memory 64 GB of eMMC memory models with a fingerprint sensor M57276 001 Intel Core i5 1135G7 processor 16 GB of system memory 64 GB of eMMC memory models without a fingerprint sensor M57272 001 Intel Core i5 1135G7 processor 8 GB of system memory no eMMC memory models with a fingerprint sensor M57274 001 Intel Core i5 1135G7 processor 8 GB of system memory 6...

Page 22: ...cludes cable M31755 001 10 Touchpad bracket available in the Bracket Kit M12524 001 11 Touchpad includes rubber and protective tape NOTE The touchpad cable is available as spare part number M57289 001 M59382 001 12 Fan M02014 001 13 Heat sink includes replacement thermal material M31753 001 14 Battery 3 cell 58 Whr M12585 005 USB door 15 Left door M00444 001 16 Right door M00445 001 Display assemb...

Page 23: ...lay panel FHD nontouch M57293 001 FHD touch M57294 001 HD nontouch M57295 001 HD touch M57296 001 3 Top bracket M00700 001 4 Hinges left and right M77032 001 5 Display cable Nontouch M57292 001 Touch M57291 001 6 Wireless antennas M00435 001 7 Hinge cover M00441 001 8 Camera cable M12614 001 Display assembly subcomponents 15 ...

Page 24: ...cludes cover tape and bezel tape M57290 001 Bracket Kit includes touchpad support bracket and fingerprint bracket M12524 001 Miscellaneous Hardware Kit includes touchpad dome rubber cap with protective tape and touchpad protective tape M57288 001 Plastics Kit includes WLAN protective tape and top rubber M31757 001 Power cord C5 1 0 m 3 3 ft Argentina L19357 001 Australia L19358 001 Brazil L19359 0...

Page 25: ...Table 3 3 Miscellaneous part descriptions and part numbers continued Component Spare part number The United Kingdom L19373 001 Duckhead power cord Japan L33157 001 Miscellaneous parts 17 ...

Page 26: ...rts Using excessive force during disassembly and reassembly can damage plastic parts Cables and connectors Handle cables with extreme care to avoid damage IMPORTANT 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 Apply only the tension required to unseat or seat the cables during rem...

Page 27: ...troy static sensitive devices or microcircuitry Often the spark is neither felt nor heard but damage occurs An electronic device exposed to electrostatic discharge ESD might not appear to be affected at all and can work perfectly throughout a normal cycle The device might function normally for a while but it has been degraded in the internal layers reducing its life expectancy Networks built into ...

Page 28: ...bags or boxes Protect all electrostatic parts and assemblies with conductive or approved containers or packaging Keep electrostatic sensitive parts in their containers until they arrive at static free stations Place items on a grounded surface before removing them from their container Always be properly grounded when touching a sensitive component or assembly Avoid contact with pins leads or circu...

Page 29: ... equipment Use fixtures made of static safe materials when fixtures must directly contact dissipative surfaces Keep the work area free of nonconductive materials such as ordinary plastic assembly aids and polystyrene foam 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 m...

Page 30: ...high touch external surfaces on your computer After you remove the dirt and debris you can also clean the surfaces with a disinfectant See Cleaning your computer with a disinfectant on page 23 for guidelines to help prevent the spread of harmful bacteria and viruses Removing dirt and debris from your computer Here are the recommended steps to clean dirt and debris from your computer For computers ...

Page 31: ...ores Follow these steps when disinfecting high touch external surfaces on your computer 1 Wear disposable gloves made of latex or nitrile gloves if you are latex sensitive when cleaning the surfaces 2 Turn off your device and unplug the power cord and other connected external devices Remove any installed batteries from items such as wireless keyboards CAUTION To prevent electric shock or damage to...

Page 32: ...nd 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 surf...

Page 33: ...e left panel Details display in the right panel Chrome 1 Go to support google com chrome 2 Search collect Chrome device logs Technical bulletins To locate technical bulletins 1 Go to www hp com 2 Place the cursor over Problem solving to display more options 3 Select Support Troubleshooting 4 Type the serial number product number or product name to go to the product support page 5 Select Advisories...

Page 34: ...cial note of each screw size and location during removal and replacement Preparation for disassembly To remove and replace computer components use these procedures See Removal and replacement procedures preliminary requirements on page 18 for initial safety procedures 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 ...

Page 35: ...ove 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 Spare part number Battery 3 cell 58 Whr M12585 005 Component replacement procedures 27 ...

Page 36: ...ese steps 1 Prepare the computer for disassembly see Preparation for disassembly on page 26 2 Remove the bottom cover see Bottom cover on page 26 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 c...

Page 37: ...ttom cover on page 26 3 Remove the battery see Battery on page 27 Remove the solid state drive 1 Remove the Phillips M2 0 3 0 screw 1 that secures the drive to the computer 2 Pull the drive away from the socket to remove it 2 To install the solid state drive reverse the removal procedures NOTE Solid state drives are designed with a notch to prevent incorrect insertion Speakers To remove the speake...

Page 38: ...ad 4 5 Remove the cable from the clips located between the speakers under the battery 5 Reverse this procedure to install the speakers Touchpad To remove the touchpad use this procedure and illustration Table 5 5 Touchpad description and part number Description Spare part number Touchpad includes rubber and protective tape M59382 001 Touchpad cable M57289 001 Touchpad support bracket included in B...

Page 39: ... protective shielding from the top of the touchpad 3 6 Remove the three Phillips M2 0 2 0 screws 4 that secure the touchpad to the computer 7 Remove the touchpad from the computer 5 Reverse this procedure to install the touchpad To be sure the cable is properly positioned when replacing the touchpad first put the black protective tape back into place reconnect the cable to the touchpad and then re...

Page 40: ...ttom cover on page 26 3 Remove the battery see Battery on page 27 Remove the fingerprint sensor board 1 Remove the Phillips M2 0 2 0 screw 1 that secures the fingerprint sensor bracket 2 Lift the bottom of the bracket up and then pull bracket toward front and out from under lip at the top of the bracket 2 3 Disconnect the cable from the ZIF connector on the system board 3 and then peel the cable o...

Page 41: ... battery see Battery on page 27 Remove the fan assembly 1 Disconnect the fan cable from the system board 1 2 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 8 Heat sink descriptions and part numbers Description Spare part number Heat sink M00434 ...

Page 42: ...e Bottom cover on page 26 3 Remove the battery see Battery on page 27 Remove the heat sink 1 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 34 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 43: ...it Reverse this procedure to install the heat sink 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 1 Prepare the computer for disassembly see Preparation for disassembly on page 26 2 Remove the bottom cover see Bott...

Page 44: ...low these steps 1 Prepare the computer for disassembly see Preparation for disassembly on page 26 2 Remove the bottom cover see Bottom cover on page 26 3 Remove the battery see Battery on page 27 4 Remove the fan see Fan on page 32 Remove the USB board 1 Remove the tape from the connectors on the USB board 1 2 Disconnect the two cables from the reverse ZIF connectors on the USB board 2 3 Remove th...

Page 45: ...door left M00444 001 USB door right M00445 001 Before removing the USB door follow these steps 1 Prepare the computer for disassembly see Preparation for disassembly on page 26 2 Remove the bottom cover see Bottom cover on page 26 3 Remove the battery see Battery on page 27 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 comput...

Page 46: ... i5 1145G7 processor 8 GB of system memory no eMMC memory models with a fingerprint sensor M57277 001 Intel Core i5 1145G7 processor 8 GB of system memory 64 GB of eMMC memory models with a fingerprint sensor M57276 001 Intel Core i5 1135G7 processor 16 GB of system memory 64 GB of eMMC memory models without a fingerprint sensor M57272 001 Intel Core i5 1135G7 processor 8 GB of system memory no eM...

Page 47: ...e computer for disassembly see Preparation for disassembly on page 26 2 Remove the bottom cover see Bottom cover on page 26 3 Remove the battery see Battery on page 27 4 Remove the fan see Fan on page 32 5 Remove the heat sink see Heat sink on page 33 Remove the system board 1 Disconnect the following cables from the system board Antenna cables from integrated WLAN module 1 Camera cable 2 Display ...

Page 48: ... see Preparation for disassembly on page 26 2 Remove the bottom cover see Bottom cover on page 26 3 Remove the battery see Battery on page 27 4 Remove the heat sink see Heat sink on page 33 Remove the display assembly 1 Remove the plastic that covers the integrated WLAN module 1 and then disconnect the antennas from the module 2 2 Disconnect the camera cable 3 3 Disconnect the display cable 4 4 Re...

Page 49: ... 7 Open the computer to open the hinges 2 8 Separate the computer from the display 3 9 If you need to replace display assembly subcomponents a Remove the three Phillips M2 0 3 0 screws 1 that secure the bezel to the display b Slide a flat tool 2 under each side of the bezel to remove it 3 The bezel is available as spare part number M59381 001 Component replacement procedures 41 ...

Page 50: ...lay panel is secured to the display enclosure with tape that is installed under the left and right sides of the panel To remove the panel use tweezers to grasp the end of the tape 2 While turning the tweezers wrap the tape around the tweezers 3 as you continue to pull the tape out from behind the display panel 4 You must pull the tape multiple times before it is completely removed 42 Chapter 5 Rem...

Page 51: ...lay enclosure Display panels are available as the following spare part numbers M57293 001 FHD nontouch M57294 001 FHD touch M57295 001 HD nontouch M57296 001 HD touch d Disconnect the cable from the panel 1 e Remove the panel 2 Component replacement procedures 43 ...

Page 52: ...e part number M57292 001 for nontouch models and M57291 001 for touch models 13 If you need to remove the camera module and cable a 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 44 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 53: ...t number M00442 001 The camera cable is available as spare part number M12614 001 14 If you need to remove the hinges from the display a Remove the two Phillips broad head M2 5 2 5 screws 1 from each hinge b Remove the hinges from the display 2 The display hinges are available as spare part number M77032 001 Component replacement procedures 45 ...

Page 54: ...isplay a Remove the four Phillips broadhead M2 0 2 5 screws 1 from the bracket b Remove the bracket from the display 2 The bracket is available as spare part number M00700 001 46 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 55: ...boards The second table provides the country codes Table 5 13 Keyboard with top cover descriptions and part numbers Description Spare part number Keyboard with top cover backlit with fingerprint sensor M57281 xx1 Keyboard with top cover backlit without fingerprint sensor M57282 xx1 Keyboard with top cover not backlit without fingerprint sensor M57283 xx1 Keyboard with top cover not backlit with fi...

Page 56: ...taly 061 Switzerland BG1 Denmark 081 Japan 291 Taiwan AB1 Denmark Finland and Norway DH1 The Netherlands B31 Thailand 281 French Canada DB1 Northern Africa FP1 Turkey 141 Finland Sweden B71 Norway 091 Turkey F 541 France 051 Portugal 131 Ukraine BD1 Germany 041 Romania 271 United Kingdom 031 Greece 151 Russia 251 United States 001 48 Chapter 5 Removal and replacement procedures for authorized serv...

Page 57: ...tings You restarted your computer and it still doesn t work properly You want to change the owner of your computer To reset your computer 1 Under the Settings menu select Advanced 2 Under Reset settings in the Powerwash section select Reset 3 In the window that appears select Powerwash and then select Continue 4 Follow the on screen instructions to reset your computer and sign in with your Google ...

Page 58: ...eb Store search for chrome recovery select Chromebook Recovery Utility from the Apps list and follow the on screen instructions Creating recovery media You can use recovery media to recover the original operating system and software programs that were installed at the factory To create recovery media 1 Turn on a computer that has internet access NOTE You must have administrative rights to the comp...

Page 59: ...pport google com Erasing and reformatting the recovery media When you create recovery media the USB flash drive or SD memory card is formatted as a recovery tool After recovery you must erase the recovery media to reuse your storage device Follow these steps to use the Chromebook Recovery Utility to erase the recovery media 1 Select the Launcher icon and then select All Apps 2 In the apps window s...

Page 60: ... kg 3 4 lb Input power Operating voltage and current 19 5 V dc 3 33 A 65 W 19 5 V dc 2 31 A 45 W Temperature Operating 5 C to 35 C 41 F to 95 F Nonoperating 20 C to 60 C 4 F to 140 F Relative humidity noncondensing Operating 10 to 90 Nonoperating 5 to 95 Maximum altitude unpressurized Operating 15 m to 3 048 m 50 ft to 10 000 ft Nonoperating 15 m to 12 192 m 50 ft to 40 000 ft NOTE Applicable prod...

Page 61: ...tive 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 eDP 35 6 cm 14 0 in display specifications 53 ...

Page 62: ...steps in this chapter Current BIOS steps Use these instructions to restore nonvolatile memory 1 Follow these steps to restore the nonvolatile memory that can contain personal data Restoring or reprogramming nonvolatile memory that does not store personal data is neither necessary nor recommended a Turn on or restart the computer and then quickly press esc NOTE If the system has a BIOS administrato...

Page 63: ...t least 24 hours 2 Complete one of the following Remove and retain the storage drive or Clear the drive contents by using a third party utility designed to erase data from an SSD or Clear the contents of the drive by using the following BIOS Setup Secure Erase command option steps If you clear data using Secure Erase you cannot recover it a Turn on or restart the computer and then quickly press es...

Page 64: ...y changing the Windows date time This memory is not write protected Controller NIC EEPROM 64 KB not customer accessible No Yes Stores NIC configuration and NIC firmware NIC EEPROM is programmed using a utility from the NIC vendor that can be run from DOS A utility must be used to write data to this memory and is available from the NIC vendor Writing data to this ROM in an inappropriate manner will...

Page 65: ...for updating the firmware Only firmware updates digitally signed by Intel can be applied using this utility Bluetooth flash select products only 2 megabits No Yes Stores Bluetooth configuration and firmware Bluetooth flash is programmed at the factory Tools for writing data to this memory are not publicly available but can be obtained from the silicon vendor A utility must be used for writing data...

Page 66: ...diagnostics The UEFI BIOS provides functionality beyond that of the legacy BIOS In addition the UEFI BIOS works to initialize the computer s hardware before loading and executing the OS the runtime environment allows the loading and execution of software programs from storage devices to provide more functionality such as advanced hardware diagnostics with the ability to display more detailed syste...

Page 67: ...ear or delete all Secure Boot Keys a Turn on or restart the computer and then quickly press esc b Select the Security menu select Secure Boot Configuration and then follow the on screen instructions c At the Secure Boot Configuration window select Secure Boot select Clear Secure Boot Keys and then follow the on screen instructions to continue Using HP Sure Start select products only Select compute...

Page 68: ...t be approved by an acceptable accredited agency responsible for evaluation in the country or region where the power cord set will be used The power cord sets must have a minimum current capacity of 10 A and a nominal voltage rating of 125 V ac or 250 V ac as required by the power system of each country or region The appliance coupler must meet the mechanical configuration of an EN 60 320 IEC 320 ...

Page 69: ...le cord and wall plug must bear a T mark and registration number in accordance with the Japanese Dentori Law The flexible cord must be Type VCTF three conductor 0 75 mm or 1 25 mm conductor size The wall plug must be a two pole grounding type with a Japanese Industrial Standard C8303 7 A 125 V ac configuration 4 The flexible cord must be Type RVV three conductor 0 75 mm conductor size Power cord s...

Page 70: ...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 website at http www hp com recycle 62 Chapter 10 Recycling ...

Page 71: ...oval 32 spare part number 32 fingerprint reader identifying 8 fingerprint sensor board removal 32 spare part numbers 32 G grounding methods 18 19 20 guidelines packaging 18 24 transporting 18 24 workstation 18 H hard drive specifications 52 HDMI port identifying 5 headphone audio out jack 4 heat sink removal 33 spare part numbers 33 HP Sure Start 54 59 I illustrated parts catalog 12 internal micro...

Page 72: ...al and replacement 29 spare part country codes 47 speaker removal 29 spare part numbers 29 speakers identifying 8 specifications computer 52 display 52 hard drive 52 static electricity 18 19 support information 24 system board removal 38 spare part numbers 38 system memory removing personal data from volatile 54 system recovery Chrome operating system 50 Chromebook Recovery Utility 50 recovery med...