HP Pro c640 Chromebook, 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: ...cts 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 2020 Document Part Number L93860 001 Product notice This guide describes features that are common to most models Some features may not be available on your computer To access the latest user guides go to...

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: ...ocedures preliminary requirements 19 Tools required 19 Service considerations 19 Plastic parts 19 Cables and connectors 19 Drive handling 19 Workstation guidelines 20 Electrostatic discharge information 20 Generating static electricity 21 Preventing electrostatic damage to equipment 21 Personal grounding methods and equipment 22 Grounding the work area 22 Recommended materials and equipment 22 Pac...

Page 6: ...1 Creating recovery media 52 Recovering the Chrome operating system 52 Setting up your computer after a reset or recovery 52 Erase and reformat the recovery media 52 7 Specifications 53 Computer specifications 53 35 6 cm 14 0 in display specifications 53 8 Statement of memory volatility 55 Current BIOS steps 55 Nonvolatile memory usage 57 Questions and answers 59 Using HP Sure Start select product...

Page 7: ...Index 65 vii ...

Page 8: ...viii ...

Page 9: ...10110U 2 1 GHz turbo up to 4 1 GHz 2 cores 4 MB L3 cache 15 W Intel Pentium Gold 6405U 2 4 GHz 2 cores 2 MB L3 cache 15 W Graphics Internal graphics Intel UHD Graphics Supports HD Decode DX12 and HDMI Display 35 6 cm 14 0 in WLED antiglare eDP slim 3 0 mm narrow bezel nontouch Full high definition FHD 1920 1080 UWVA 220 nits High definition HD 1366 768 SVA 250 nits 35 6 cm 14 0 in slim 3 0 mm narr...

Page 10: ...S 104 Push push insertion removal Ports Hot plug unplug and autodetect for correct output to wide aspect vs standard aspect video HDMI v1 4b supporting up to 1920 1080 60 Hz via USB Type C Audio out headphone audio in microphone combo jack 2 USB 3 1 Gen 1 Type C right and left side support charging power delivery video and data 2 USB 3 1 Gen 1 Type A right and left side Keyboard pointing devices G...

Page 11: ...riptions 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 3 ...

Page 12: ...4 Chapter 1 Product description ...

Page 13: ...l it is firmly seated To 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 persona...

Page 14: ...llustration and table to identify the components on the left side of the computer Table 2 2 Left side components and their descriptions Component Description 1 USB SuperSpeed port Connects a USB device such as a cell phone camera activity tracker or smartwatch and provides high speed data transfer 2 HDMI port Connects an optional video or audio device such as a high definition television any compa...

Page 15: ... security cable is designed to act as a deterrent but it might not prevent the computer from being mishandled or stolen Display The computer display can include essential components such as antennas cameras and microphones Table 2 3 Display components and their descriptions Component Description 1 WLAN antennas Send and receive wireless signals to communicate with wireless local area networks WLAN...

Page 16: ... If you have both front facing and rear facing cameras when one camera lens is revealed and ready to use the other is concealed 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 ...

Page 17: ...iefly to turn on the computer When the computer is on press the button briefly to initiate Sleep When the computer is in the Sleep state press the button briefly to exit Sleep select products only When the computer is in Hibernation press the button briefly to exit Hibernation IMPORTANT Pressing and holding down the power button results in the loss of unsaved information If the computer has stoppe...

Page 18: ...keys Execute frequently used system functions 3 Power button When the computer is off press the button briefly to turn on the computer When the computer is on press the button briefly to initiate Sleep When the computer is in the Sleep state press the button briefly to exit Sleep select products only When the computer is in Hibernation press the button briefly to exit Hibernation IMPORTANT Pressin...

Page 19: ...e computer Labels may be in paper form or imprinted on the product IMPORTANT Check the following locations for the labels described in this section the bottom of the computer inside the battery bay under the service door on the back of the display or on the bottom of a tablet kickstand Service label Provides important information to identify your computer When contacting support you may be asked f...

Page 20: ...arranty 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 12 Chapter 2 Components ...

Page 21: ...TE 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 Computer major c...

Page 22: ...cement thermal material Intel Core i7 10610U processor 16 GB of system memory and 128 GB of eMMC memory models with a fingerprint sensor M00695 001 Intel Core i7 10610U processor 16 GB of system memory and 64 GB of eMMC memory models with a fingerprint sensor M00694 001 Intel Core i5 10310U processor 16 GB of system memory and 128 GB of eMMC memory models with a fingerprint sensor M00691 001 Intel...

Page 23: ...play 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 1 Display bezel M00701 001 2 Display panel FHD nontouch M00446 001 FHD touch M00447 001 HD nontouch M00448 001 HD touch M00449 001 Display assembly subcomponents 15 ...

Page 24: ...r M00441 001 8 Camera cable M12614 001 9 Camera module M00442 001 10 Display back cover M00439 001 Cables To identify the cables use this illustration and table Table 3 3 Cable descriptions and part numbers Item Component Spare part number Cable Kit includes M00703 001 1 Touchpad cable 2 USB board cable 3 USB board cable Miscellaneous parts To identify the miscellaneous parts use this table 16 Cha...

Page 25: ...eden L19361 001 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 Power cord C5 1 8 m Australia L19358 002 Brazil L19359 002 Denmark L19360 002 Europe Austria Belgium Finland Franc...

Page 26: ...tions 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 18 Chapter 3 Illustrated parts catalog ...

Page 27: ...to prevent damage Plastic parts 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 o...

Page 28: ... static shielding material Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment Use conductive field service tools such as cutters screw drivers and vacuums When fixtures must directly contact dissipative surfaces use fixtures made only of static safe materials Keep the work area free of nonconductive materials such as ordinary plastic assem...

Page 29: ...00 V 35 000 V 12 000 V 6 000 V 2 000 V Removing DIPs from vinyl tray Removing DIPs from polystyrene foam Removing bubble pack from PCB printed circuit board Packing PCBs in foam lined box 2 000 V 3 500 V 7 000 V 5 000 V 4 000 V 5 000 V 20 000 V 11 000 V 11 500 V 14 500 V 26 500 V 21 000 V Multiple electric components can be packaged together in plastic tubes trays or polystyrene foam NOTE As littl...

Page 30: ... To prevent static damage at the work area follow these precautions Cover the work surface with approved static dissipative material Provide a wrist strap connected to the work surface and properly grounded tools and equipment Use static dissipative mats foot straps or air ionizers to give added protection Handle electrostatic sensitive components parts and assemblies by the case or PCB laminate H...

Page 31: ...D 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 surface before removing items from their containers Always be properly grounded when touching a component or assembly Store reusable ESD sensitive parts from assemblies in protective packaging ...

Page 32: ...24 Chapter 4 Removal and replacement procedures preliminary requirements ...

Page 33: ...he parts described in this chapter Make special 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 19 for initial safety procedures 1 Turn off the computer If you are unsure whether the computer is off or in Hibernation ...

Page 34: ...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 60 Whr L84398 002 26 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 35: ...hich can cause shorting across the connectors Before removing the battery follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 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 f...

Page 36: ...ow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 3 Remove the battery see Battery on page 26 Remove the speakers 1 Disconnect the speaker cable from the system board 1 2 Disconnect the cable from the ZIF connector on the touchpad 2 You need to move this cable so you can remove the speaker cable that route...

Page 37: ...everse this procedure to install the speakers Touchpad To remove the touchpad use this procedure and illustration Table 5 4 Touchpad description and part number Description Spare part number Touchpad M00437 001 Touchpad cable included in Cable Kit M00703 001 Touchpad support bracket included in Bracket Kit M12524 001 Before removing the touchpad follow these steps 1 Prepare the computer for disass...

Page 38: ...3 Lift the tape that secures the speaker cable to the touchpad 1 4 Disconnect the cable from the ZIF connector on the touchpad 2 5 Remove the 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 30 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 39: ... bracket available in the Bracket Kit M12524 001 Before removing the fingerprint sensor board follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 3 Remove the battery see Battery on page 26 Remove the fingerprint sensor board 1 Disconnect the cable from the ZIF connector on the system board 1 2 Remove th...

Page 40: ...cription Spare part number Fan assembly M02014 001 Before removing the fan follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 3 Remove the battery see Battery on page 26 Remove the fan assembly 1 Disconnect the fan cable from the system board 1 32 Chapter 5 Removal and replacement procedures for authori...

Page 41: ...ion Spare part number Heat sink M00434 001 Before removing the heat sink follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 3 Remove the battery see Battery on page 26 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 ...

Page 42: ...is included with the heat sink and system board spare part kits The following illustration shows the replacement thermal material locations Thermal paste is used on one system board component 1 and on the heat sink area 2 that services it Reverse this procedure to install the heat sink 34 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 43: ...mbly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 3 Remove the battery see Battery on page 26 Remove the USB board 1 Disconnect the two cables from the ZIF connectors on the USB board 1 2 Remove the five Phillips M2 0 3 0 screws 2 that secure the board to the computer 3 Remove the board from the computer 3 Reverse this procedure to install the USB board ...

Page 44: ...reparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 3 Remove the battery see Battery on page 26 Remove the USB door 1 Insert a removal tool 1 under the USB door 2 2 Align the posts on the tool with the slots on the underside of the door 3 and then pull the tool away from the door to release it 4 36 Chapter 5 Removal and replacement procedures for authorized serv...

Page 45: ...3 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 37 ...

Page 46: ...or 8 GB of system memory and 64 GB of eMMC memory models with a fingerprint sensor M00685 001 Intel Pentium 6405U processor 8 GB of system memory and 32 GB of eMMC memory models without a fingerprint sensor M00696 001 Intel Pentium 6405U processor 8 GB of system memory and 32 GB of eMMC memory models with a fingerprint sensor M00698 001 Before removing the system board follow these steps 1 Prepare...

Page 47: ... Fingerprint reader cable ZIF 9 Speaker cable 10 2 Remove the four Phillips M2 0 5 0 screws that secure the system board to the computer Component replacement procedures 39 ...

Page 48: ... 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 1 Prepare the computer for disassembly Preparation for disassembly on page 25 2 Remove the bottom cover Bottom cover on page 25 40 Chapter 5 Removal and replacement procedures for authorized service p...

Page 49: ...e the display assembly 1 Disconnect the antennas from the WLAN module 1 2 Disconnect the camera cable 2 3 Disconnect the display cable 3 4 Remove the four Phillips M2 5 5 0 screws 1 that secure the display to the computer 5 Open the computer to open the hinges 2 Component replacement procedures 41 ...

Page 50: ...nents 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 M00701 001 42 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 51: ...f the panel 1 b The display 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 ...

Page 52: ...els are available as the following spare part numbers M00446 001 FHD nontouch M00447 001 FHD touch M00448 001 HD nontouch M00449 001 HD touch d Disconnect the cable from the panel 1 e Remove the panel 2 44 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 53: ...y back cover The display cable is available as spare part number M00702 001 11 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 Component replacement procedures 45 ...

Page 54: ...camera cable is available as spare part number M12614 001 12 If you need to remove the hinges from the display a Remove the two Phillips broadhead 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 M00440 001 46 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 55: ...isplay bracket from the display 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 Component replacement procedures 47 ...

Page 56: ...e 5 11 Keyboard with top cover descriptions and part numbers Description Spare part number Keyboard with top cover 3 coat paint backlit with fingerprint sensor M03451 xx1 Keyboard with top cover 3 coat paint backlit without fingerprint sensor M03452 xx1 Keyboard with top cover textured not backlit without fingerprint sensor M03453 xx1 Keyboard with top cover textured not backlit with fingerprint s...

Page 57: ...ion Spare part number Czech Republic Slovakia FL1 Japan 291 Taiwan AB1 Denmark Finland and Norway DH1 The Netherlands B31 Thailand 281 French Canada DB1 Northern Africa FP1 Turkey 141 France 051 Portugal 131 Ukraine BD1 Germany 041 Romania 271 United Kingdom 031 Greece 151 Russia 251 United States 001 Hungary 211 Saudi Arabia 171 Component replacement procedures 49 ...

Page 58: ...50 Chapter 5 Removal and replacement procedures for authorized service provider parts ...

Page 59: ...any data synced to your Google Drive storage are not affected by a system recovery NOTE For more information about performing a system recovery on your computer go to http www support google com Before beginning the recovery process you need the following A USB flash drive or SD memory card with a capacity of 4 GB or greater All data is erased from this storage device when the recovery media is cr...

Page 60: ...perform the initial setup process For details on setting up the computer go to http www support google com Erase and reformat the recovery media During the process of creating recovery media the USB flash drive or SD memory card is formatted for use as a recovery tool After you recover your computer you will need to erase the recovery media if you want to reuse your USB flash drive or SD memory ca...

Page 61: ... kg 3 35 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 pro...

Page 62: ... 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 Backlight WLED Display panel interface eDP 54 Chapter 7 Specifications ...

Page 63: ...se before beginning 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...

Page 64: ...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 esc b Select ...

Page 65: ...OS or by 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 mann...

Page 66: ...ting 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 to this...

Page 67: ...em 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 sy...

Page 68: ...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 69: ...wer cord sets must 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 E...

Page 70: ...ance coupler flexible 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 3 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 3 conductor 0 75 mm conductor size P...

Page 71: ...he battery in general household waste Follow the local laws and regulations in your area for battery disposal HP encourages customers to recycle used electronic hardware HP original print cartridges and rechargeable batteries For more information about recycling programs see the HP website at http www hp com recycle 63 ...

Page 72: ...64 Chapter 10 Recycling ...

Page 73: ...ents 7 display panel illustrated 15 spare part number 15 E electrostatic discharge ESD 19 20 preventing damage 19 20 21 erase and reformat recovery media removal 52 esc key identifying keys esc 10 F factory reset 51 fan illustrated 13 removal 32 spare part number 13 32 fingerprint sensor board removal 31 spare part numbers 31 frecovering Chrome operating system 52 G grounding methods 19 20 22 guid...

Page 74: ...fter reset or recovery 52 slots memory card reader 5 spare part country codes 48 speaker illustrated 13 removal 28 spare part number 13 spare part numbers 28 special keys using 10 specifications computer 53 display 53 hard drive 53 static electricity 19 20 21 system board illustrated 13 removal 38 spare part number 13 spare part numbers 38 system memory removing personal data from volatile 55 T to...