HP ELITEBOOK 840 G4 Page 67 Maintenance And Service Manual Download

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Touchpad board

Description

Spare part number

Touchpad board without NFC antenna

821171-001

Touchpad board with NFC antenna

821172-001

Before removing the touchpad board, follow these steps:

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.

Disconnect all external devices connected to the computer.

Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.

Remove the bottom cover (see

Bottom cover on page 32

Remove the battery (see

Battery on page 36

Remove the keyboard (see

Keyboard on page 47

Remove the internal base plate (see

Internal base plate on page 50

Remove the touchpad board:

Disconnect the cable from the touchpad to the smart card reader board (1), and then disconnect the NFC
antenna from the NFC module (2).

Lift the tape (3), and then remove the 2 Phillips M2.5x2.5 screws (4) that secure the touchpad button
board to the computer.

Lift the top of the touchpad board up, and then pull it forward to remove it from the computer (5).

Reverse this procedure to install the touchpad board.

Component replacement procedures

Summary of Contents for ELITEBOOK 840 G4

Page 1: ...HP EliteBook 840 G4 Notebook PC HP EliteBook 848 G4 Notebook PC Maintenance and Service Guide ...

Page 2: ...ribes features that are common to most models Some features may not be available on your computer Not all features are available in all editions of Windows This computer may require upgraded and or separately purchased hardware drivers and or software to take full advantage of Windows functionality Go to http www microsoft com for details Your product does not support Windows 8 or Windows 7 In acc...

Page 3: ...hat should only be accessed by an authorized service provider See Chapter 5 Removal and replacement procedures for Customer Self Repair parts for details Accessing parts described in Chapter 6 Removal and replacement procedures for Authorized Service Provider only parts can damage the computer or void your warranty iii ...

Page 4: ...iv Important Notice about Customer Self Repair Parts ...

Page 5: ...w 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 contact the skin or a soft surface such as pillows or rugs or clothing during operation The device and the AC adapter comply with the user accessible surface temperature limits defined by the International Standard for Safety of Inf...

Page 6: ...vi Safety warning notice ...

Page 7: ...18 Computer major components 18 Display assembly subcomponents 21 Plastics Kit 22 Mass storage devices 23 Cable Kit 24 Miscellaneous parts 24 4 Removal and replacement procedures preliminary requirements 27 Tools required 27 Service considerations 27 Plastic parts 27 Cables and connectors 28 Drive handling 28 Grounding guidelines 29 Electrostatic discharge damage 29 Packaging and transporting guid...

Page 8: ...uchpad board 57 NFC module 58 Smart card reader board 59 USB audio board 61 System board 62 Speaker assembly 66 Display assembly 67 Power button board 73 Top cover 75 7 Interpreting system validation diagnostic front panel LEDs and audible codes 76 8 Computer Setup BIOS TPM and HP Sure Start 78 Using Computer Setup 78 Starting Computer Setup 78 Navigating and selecting in Computer Setup 78 Restori...

Page 9: ...lect products only 87 Using HP Recovery media to recover 87 Changing the computer boot order 88 Removing the HP Recovery partition select products only 89 11 Specifications 90 Computer specifications 90 35 6 cm 14 0 in display specifications 91 Solid state drive specifications 91 Hard drive specifications 92 12 Power cord set requirements 93 Requirements for all countries 93 Requirements for speci...

Page 10: ...x ...

Page 11: ... PSR quad high definition QHD AntiGlare AG UWVA 2560 x 1440 340 nits display with and without webcam Slim full high definition FHD SVA 1920 x 1080 300 nits display with touch and webcam HP Sure View integrated privacy screen FHD SVA anti glare 1920 x 1080 with and without camera Privacy screen must be configured at time of purchase All Privacy screens including non touch are hinge up repair Planne...

Page 12: ...ection I219 LM 10 100 1000 for use with computer models with i7 7500U i5 7200U or i3 7100U processors Intel Ethernet Connection I219 V 10 100 1000 for use with computer models with i7 7600U i5 7300U processors S3 S4 S5 Wake on LAN Wireless networking WPAN Bluetooth Integrated wireless personal area network PAN supported by Bluetooth 4 2 combo card WLAN Integrated wireless local area network WLAN o...

Page 13: ... hs3210 WW HSPA without GPS Supports no WWAN option External media cards Memory card reader SD SDHC SDXC Ports VGA Dsub 15 pin supporting 1920 x 1200 external resolution 60Hz hot plug unplug and auto detect USB 3 1 Gen 1 charging port USB 3 1 Gen 1 port USB Type C basic DisplayPort RJ 45 Docking connector Audio out headphone audio in microphone combo jack AC port Docking Ultraslim side Docking Sta...

Page 14: ... Module TPM 2 0 1 2 downgradeable after purchase Infineon soldered down Integrated Smart Card reader active Preboot authentication password smart card Operating system Preinstalled Windows 10 Home 64 Windows 10 Professional 64 FreeDOS 2 0 NeoKylin 64 bit Restore Media DR SR DVD Windows 10 NeoKylin Linux Restore Media OS DVD Windows 10 Professional 64 USB Restore Windows 10 Windows 10 drivers Certi...

Page 15: ...Category Description AC adapter Battery Hard drive Solid state drive Memory module WLAN module WWAN module Keyboard 5 ...

Page 16: ...til it is firmly seated To remove a card Press in on the card and then remove it from the memory card reader 4 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 microphone only devices WARNING To reduce the risk of pers...

Page 17: ...ent Description 1 Security cable slot Attaches an optional security cable to the computer NOTE The security cable is designed to act as a deterrent but it may not prevent the computer from being mishandled or stolen 2 Vents 2 Enable 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...

Page 18: ... using streaming video To use the webcam Type camera in the taskbar search box and then select Camera 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 country or region To ...

Page 19: ... gestures to move the pointer or activate items on the screen 5 Left TouchPad button Functions like the left button on an external mouse 6 Right pointing stick button Functions like the right button on an external mouse 7 Near Field Communications NFC tapping area select products only Allows you to touch an NFC compatible device to this area to wirelessly connect and communicate with the computer ...

Page 20: ...ivacy light select products only On Privacy screen is on Off Privacy screen is off 3 Microphone mute light Amber microphone sound is off Off microphone sound is on 4 Num lk light On Num lock is on 5 Wireless light On An integrated wireless device such as a wireless local area network WLAN device and or a Bluetooth device is on NOTE On some models the wireless light is amber when all wireless devic...

Page 21: ...er is on press the button briefly to initiate Sleep When the computer is in the Sleep state press the button briefly to exit Sleep When the computer is in Hibernation press the button briefly to exit Hibernation CAUTION 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 ...

Page 22: ...und 3 Wireless button Turns the wireless feature on or off but does not establish a wireless connection A wireless network must be set up before a wireless connection is possible 4 Volume mute button Mutes and restores speaker sound 5 Fingerprint reader select products only Allows a fingerprint logon to Windows instead of a password logon 12 Chapter 2 External component identification ...

Page 23: ...tem functions when pressed in combination with the fn key See Using the hot keys on page 14 5 Embedded numeric keypad A numeric keypad superimposed over the keyboard alphabet keys that enables you to add subtract and perform other numeric tasks When num lk is on the keypad can be used like an external numeric keypad NOTE If the keypad function is active when the computer is turned off that functio...

Page 24: ... the screen image among display devices connected to the system For example if a monitor is connected to the computer repeatedly pressing fn f4 alternates the screen image from computer display to monitor display to simultaneous display on both the computer and the monitor Most external monitors receive video information on the computer using the external VGA video standard The fn f4 hot key can a...

Page 25: ... optional docking device 2 Vents 2 Enable 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 Bottom 15 ...

Page 26: ...on Hibernation is a power saving state that uses the least amount of power 3 Battery light When AC power is connected White The battery charge is greater than 90 percent Amber The battery charge is from 0 to 90 percent Off The battery is not charging When AC power is disconnected battery not charging Blinking amber The battery has reached a low battery level When the battery has reached a critical...

Page 27: ... information to identify your computer When contacting support you will probably be asked for the serial number and possibly for the product number or the model number Locate these numbers before you contact support Component 1 Model name select products only 2 Product number 3 Serial number 4 Warranty period Regulatory label s Provide s regulatory information about the computer Wireless certifica...

Page 28: ...rted 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 See Labels on page 17 for details 18 Chapter 3 Illustrated parts catalog ...

Page 29: ...or use in Japan with a backlight 923273 291 3 Top cover Standard top cover 821173 001 Privacy 903979 001 4 Power button board 914382 001 5 Smart card reader board includes cable 914380 001 6 NFC module includes NFC cable antenna cable Mylar insulator and foam 821666 001 7 Fingerprint reader assembly includes cable 849912 001 8 TouchPad Without NFC antenna 821171 001 Including NFC antenna 821172 00...

Page 30: ...band wireless AC 3168 802 11AC 1x1 WiFi BT 4 2 Combo Adapter non vPro 852511 001 18 Solid state drive SSD 512 GB PCIe Gen3 4 SS DS NVMe MLC 914935 001 512 GB PCIe Gen3 4 SS NVMe TLC Opal 2 914934 001 512 GB PCIe NVMe Gen3x4 MLC 914933 001 512 GB SATA 3 FIPS 140 2 TLC 917382 003 360 GB PCIe Gen3 4 SS TLC 919691 003 256 GB PCIe Gen3x4 NVMe TLC 914931 001 256 GB SATA 3 Opal 2 TLC 914930 001 128 GB SA...

Page 31: ... FHD 806860 008 QHD 806862 005 4 Display webcam cable HD FHD and QHD 914381 001 Cable Kit 5 Hinge covers left and right for use in models without privacy displays 821166 001 Hinge Kit Hinge covers left and right for use in models with privacy displays 903007 001 6 Hinge Kit includes left and right hinges 821166 001 7 WLAN antenna spared with display enclosure Display assembly subcomponents 21 ...

Page 32: ...Display enclosure includes antennas 821161 001 Plastics Kit Item Component Spare part number Plastics kit 821175 001 1 Fingerprint reader blank 2 Fingerprint reader bracket 3 SD card blank 4 Solid state drive insert 5 RJ 45 door 6 Rubber feet 22 Chapter 3 Illustrated parts catalog ...

Page 33: ...3267 001 500 GB 5400 rpm hybrid 8 GB cache 732000 001 2 Hard drive hardware kit 821665 001 3 Solid state drive 512 GB PCIe Gen3 4 SS DS NVMe MLC 914935 001 512 GB PCIe Gen3 4 SS NVMe TLC Opal 2 914934 001 512 GB PCIe NVMe Gen3x4 MLC 914933 001 512 GB SATA 3 FIPS 140 2 TLC 917382 003 360 GB PCIe Gen3 4 SS TLC 919691 003 256 GB PCIe Gen3x4 NVMe TLC 914931 001 Mass storage devices 23 ...

Page 34: ...0412 001 65 W HP Smart AC adapter 3 prong EM 714635 850 65 W HP Smart AC Adapter for use in Argentina 710340 850 45 W HP Smart AC adapter 3 prong 741727 001 45 W HP Smart AC adapter 2 prong 742436 001 45 W HP Smart AC Adapter for use in Argentina 741553 852 HP DisplayPort to HDMI cable 749288 001 Power cord 3 pin black 1 83 m Argentina 401300 001 Australia 213356 001 Brazil 438722 001 Denmark 2133...

Page 35: ...Argentina 401300 007 Australia 213356 008 Brazil 438722 004 Denmark 213353 008 Europe Austria Belgium Finland France Germany the Netherlands Norway and Sweden 213350 009 India 404827 003 Israel 398063 003 Italy 213352 008 Japan 349756 002 North America 213349 009 People s Republic of China 286497 008 South Africa 361240 002 South Korea 267836 008 Switzerland 213354 008 Taiwan 393313 003 Thailand 2...

Page 36: ...Component Spare part number Pointing stick covers 20 count 828884 001 RJ 45 door 20 count 917396 001 26 Chapter 3 Illustrated parts catalog ...

Page 37: ...wing sections include some of the considerations that you must keep in mind during disassembly and assembly procedures NOTE As you remove each subassembly from the computer place the subassembly and all accompanying screws away from the work area to prevent damage Plastic parts CAUTION Using excessive force during disassembly and reassembly can damage plastic parts Use care when handling the plast...

Page 38: ...ut 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 Before handling a drive be sure that you are discharged of static electricity While handling a drive avoid touching the connector Before removing a diskette drive or optical drive be sure that a diskette or disc is not in the drive and be sure...

Page 39: ...ve these precautions Keep components in their electrostatic safe containers until you are ready to install them Before touching an electronic component discharge static electricity by using the guidelines described in this section Avoid touching pins leads and circuitry Handle electronic components as little as possible If you remove a component place it in an electrostatic safe container The foll...

Page 40: ...er materials are selected to avoid static charging When grounding is not possible use an ionizer to dissipate electric charges Workstation guidelines Follow these grounding workstation guidelines Cover the workstation with approved 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 too...

Page 41: ...m resistance between the operator and ground To be effective the conductive must be worn in contact with the skin The following grounding equipment is recommended to prevent electrostatic damage Antistatic tape Antistatic smocks aprons and sleeve protectors Conductive bins and other assembly or soldering aids Nonconductive foam Conductive tabletop workstations with ground cords of one megohm resis...

Page 42: ... parts for your computer go to http partsurfer hp com select your country or region and then follow the on screen instructions There are as many as 26 screws that must be removed replaced and or loosened when servicing Customer Self Repair parts Make special note of each screw size and location during removal and replacement Bottom cover Description Spare part number Bottom cover includes RJ 45 do...

Page 43: ... using spare part number 821175 001 NOTE Multiple RJ 45 doors are available using spare part number 917396 001 The kit contains 20 doors 3 Remove the 10 Phillips M2 5x5 0 screws 1 10 and the Phillips M2 0x7 0 screw 11 in the order shown in the following image NOTE The longer Phillips M2 0x7 0 screw is located under the SD card reader Component replacement procedures 33 ...

Page 44: ... in the following image IMPORTANT Failure to install the screws in the correct order can result in uneven bottom cover installation NOTE There are five different sizes of rubber screw covers Be sure that you reinstall them over the correct screws as shown in the following images The rubber screw cover sizes are shown in the following image 34 Chapter 5 Removal and replacement procedures for Custom...

Page 45: ...o orient the covers in the correct direction 1 Place the lower edge into the recess 1 followed by the higher edge 2 2 Use a small plastic rod or the soft part of your finger not a fingernail to ensure compaction into the recess 3 Visually inspect all rubber caps to be sure that they installed in the correct locations Run a finger over the tops of the rubber caps to ensure they are properly seated ...

Page 46: ...e power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 To remove the battery CAUTION Removing a battery that is the sole power source for the computer can cause loss of information To prevent loss of information save your work and shut down the computer through Windows before removing the battery Loosen the two cap...

Page 47: ...hen shut it down through the operating system 2 Disconnect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 To remove a hard drive 1 Loosen the 4 captive sc...

Page 48: ... remove the 4 Phillips M3 0 3 0 screws 1 that secure the cover to the drive and then lift the cover up and off the hard drive 2 Reverse this procedure to install a hard drive 38 Chapter 5 Removal and replacement procedures for Customer Self Repair parts ...

Page 49: ...er is off or in Hibernation turn the computer on and then shut it down through the operating system 2 Disconnect the power from the computer by unplugging the power cord from the computer 3 Disconnect all external devices from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Disconnect the battery see Battery on page 36 Remove the solid state drive 1 Remove the Phillips M2 0 3 ...

Page 50: ...he operating system and then click Next 6 Under Step 2 Select a Download click the BIOS link 7 Click the link for the most recent BIOS 8 Click the Download button and then follow the on screen instructions Before removing the memory module follow these steps 1 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 t...

Page 51: ...orrect insertion into the memory module slot NOTE The computer uses two memory sockets The socket labeled 2 houses the expansion memory module and the socket labeled 1 houses the primary memory module The removal procedure is the same for both memory sockets Reverse this procedure to install a memory module Component replacement procedures 41 ...

Page 52: ...ected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 Remove the WLAN module 1 Disconnect the WLAN antenna cables 1 from the terminals on the WLAN module NOTE The WLAN antenna cable labe...

Page 53: ...ith a notch to prevent incorrect insertion NOTE If the WLAN antennas are not connected to the terminals on the WLAN module the protective sleeves must be installed on the antenna connectors as shown in the following illustration Reverse this procedure to install the WLAN module Component replacement procedures 43 ...

Page 54: ...the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 Remove the WWAN module 1 Position the computer upside down 2 Disconnect the WWAN antenna cables 1 from the terminals on the WWAN module NOTE ...

Page 55: ...ith a notch to prevent incorrect insertion NOTE If the WWAN antennas are not connected to the terminals on the WWAN module the protective sleeves must be installed on the antenna connectors as shown in the following illustration Reverse this procedure to install the WWAN module Component replacement procedures 45 ...

Page 56: ...onnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 Remove the RTC battery 1 Disconnect the battery cable from the system board 1 2 Lift the Mylar from atop the battery 2 3 Using a flat tool pry the battery out o...

Page 57: ...71 Czech Republic and Slovakia FL1 Latin America 161 Switzerland BG1 Denmark 081 The Netherlands B31 Taiwan AB1 Denmark Finland and Norway DH1 Northern Africa FP1 Thailand 281 France 051 Norway 091 Turkey 141 Germany 041 Portugal 131 Turkey F 541 Greece 151 Romania 271 United Kingdom 031 Hungary 211 Russia 251 United States 001 Iceland DD1 Saudi Arabia 171 Before removing the keyboard follow these...

Page 58: ...ot to prematurely pull the keyboard cables out of the system board connectors 5 Position the computer upright with the front toward you and then open the computer as far as possible 6 Slide the keyboard slightly downward and then lift and rotate the keyboard over onto the palm rest 1 7 Lift the ZIF connector 2 for the pointing stick cable connector then and remove the cable from the connector 3 8 ...

Page 59: ...10 Remove the keyboard 8 Reverse this procedure to install the keyboard Component replacement procedures 49 ...

Page 60: ... and then follow the on screen instructions There are as many as 45 screws that must be removed replaced and or loosened when servicing Authorized Service Provider only parts Make special note of each screw size and location during removal and replacement Internal base plate Description Spare part number Internal base plate 821164 001 Before removing the internal base plate follow these steps 1 Sh...

Page 61: ...llips M2 0x7 0 screws 1 and the 4 broadhead Phillips M2 5x2 5 screws 2 that secure the internal base plate to the computer 2 Remove the 9 Phillips M2 5x5 0 screws that secure the internal base plate to the computer Component replacement procedures 51 ...

Page 62: ... antenna cables from the base plate 1 and then remove the base plate from the computer 2 Reverse this procedure to install the internal base plate 52 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 63: ...all external devices from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 Remove the heat sink fan assembly Loosen the six captive screws on the fan and heat sink following the sequence stamped on the fan and heat sink 1 di...

Page 64: ...m board components each time the heat sink is removed Replacement thermal material is included with the heat sink processor and system board spare part kits Reverse this procedure to install the heat sink fan assembly 54 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 65: ...power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate Internal base plate on page 50 Remove the fingerprint reader assembly 1 Position the computer upright and open all the way 2 Disconnect the ...

Page 66: ...fingerprint reader board and cable assembly from the computer 3 Reverse this procedure to install the fingerprint reader assembly 56 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 67: ...lugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 Remove the touchpad board 1 Disconnect the cable from the touchpad to the smart card reader board 1 and then disconnect the NFC antenna from the NF...

Page 68: ... Disconnect all external devices from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 Remove the NFC module 1 Disconnect the system board cable 1 and the NFC antenna 2 from the NFC module 2 Pry the NFC module from the smart...

Page 69: ... AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 Remove the smart card reader board NOTE Before you remove the smart card reader make sure nothing memory card or plastic ins...

Page 70: ...l to pry up the side of board near touchpad 6 and then pull the board away from the side of the computer to remove it from the clips built into the computer 7 Reverse this procedure to install the card reader board 60 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 71: ...m the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 Remove the USB audio board 1 Disconnect the cable from the system board 1 2 Remove the 2 Phillips M2 5 5 0 screws 2 tha...

Page 72: ...d to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 When replacing the sys...

Page 73: ...nnect the card reader cable from the system board by lifting the ZIF connector 1 and removing the cable from the connector 2 3 Close the computer and position it upside down Component replacement procedures 63 ...

Page 74: ... 4 Power button board cable 5 USB audio board cable 6 Card reader cable 5 Remove the 2 Phillips M2 5 5 0 screws 1 that secure the system board to the computer 6 Lift the right side of the system board up at an angle 2 64 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 75: ...stem board up and toward the right to disengage the connectors from the left side of the computer and remove the system board 3 Reverse this procedure to install the system board Component replacement procedures 65 ...

Page 76: ...he bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the keyboard see Keyboard on page 47 7 Remove the internal base plate see Internal base plate on page 50 8 Remove the system board see System board on page 62 Remove the speaker assembly 1 Remove the antennas from the clip in the speaker assembly 1 2 Use a thin tool to pry the middle of the speaker ass...

Page 77: ... 1 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 2 Disconnect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the bottom cover see ...

Page 78: ...adation of the computer s wireless performance 4 If you need to remove the display bezel flex the top 1 of the bezel the inside edges of the left and right sides 2 and then the bottom 3 of the bezel until it disengages from the display enclosure NOTE Make sure the hinges are not bent see hinge position in following image when you remove the bezel 68 Chapter 6 Removal and replacement procedures for...

Page 79: ... thin tool to pry the module away from the double sided tape on the display enclosure 1 lift the module up enough to access the cable connector 2 and then disconnect the cable from the module 3 The webcam module is available using spare part number 800575 020 The microphone module is available using spare part number 920485 001 Component replacement procedures 69 ...

Page 80: ...he raw display panel is available using spare part number 806861 005 for HD panels 806860 008 for FHD panels and 806862 005 for QHD panels 8 On the back of the display panel lift the tape from atop the connector 1 and then disconnect the display cable from the rear of the panel 2 9 Remove the display panel from the enclosure 3 70 Chapter 6 Removal and replacement procedures for Authorized Service ...

Page 81: ...sure 4 Display hinge covers for non privacy displays and hinges are available in the Hinge Kit using spare part number 821166 001 Display hinge covers for privacy displays and hinges are available using spare part number 903007 001 12 If it is necessary to replace the display webcam cable lift the display webcam cable assembly 1 from the routing path on the side of the display enclosure 2 and then...

Page 82: ... it is necessary to replace the WWAN antenna cables peel the transceivers from the top of the display enclosure 1 remove the antenna cables from the on the sides of the display enclosure 2 and then remove the antenna cables 3 NOTE The WWAN antennas are spared with the display enclosure The display enclosure is available using spare part number 821161 001 Reverse this procedure to reassemble and in...

Page 83: ...computer 4 Remove the bottom cover see Bottom cover on page 32 5 Remove the battery see Battery on page 36 6 Remove the internal base plate see Internal base plate on page 50 7 Rotate the right display hinge upward see Display assembly on page 67 NOTE The power button board sits under the right display hinge You do not have to remove the display to remove the board but you do have to rotate the ri...

Page 84: ...connector side of board upward 4 and then remove it from the computer 5 Reverse this procedure to install the power button board 74 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 85: ...over Description Spare part number Top cover standard 821173 001 Top cover privacy 903979 001 The top cover remains after removing all other spared parts from the computer Component replacement procedures 75 ...

Page 86: ...part code Major the category of the error Minor the specific error within the category NOTE Single beep blink codes are not used Number of long beeps blinks Error category 1 Not used 2 BIOS 3 Hardware 4 Thermal 5 System board Patterns of blink beep codes are determined by using the following parameters 1 second pause occurs after the last major blink 2 second pause occurs after the last minor blin...

Page 87: ...ntroller is recovering the boot block or DXE Since it takes 10 sec or so to load the DXE image and get video in the DXE case this blink code is necessary SureStart Battery LED White and Amber blinking 2 4 Power LED red white Wait for DXE recovery to complete Hardware 3 2 The embedded controller has timed out waiting for BIOS to return from memory initialization CAP NUM Blink 3 3 2 Power LED red wh...

Page 88: ... and then press enter or use a pointing device to select the item To scroll up and down select the up arrow or the down arrow in the upper right corner of the screen or use the up arrow key or the down arrow key on the keyboard To close open dialog boxes and return to the main Computer Setup screen press esc and then follow the on screen instructions To exit Computer Setup menus choose one of the ...

Page 89: ...OS may be available on the HP website Most BIOS updates on the HP website are packaged in compressed files called SoftPaqs Some download packages contain a file named Readme txt which contains information regarding installing and troubleshooting the file Determining the BIOS version To decide whether you need to update Computer Setup BIOS first determine the BIOS version on your computer BIOS vers...

Page 90: ... downloaded to your hard drive b Follow the on screen instructions to download your selection to the hard drive Make a note of the path to the location on your hard drive where the BIOS update is downloaded You will need to access this path when you are ready to install the update NOTE If you connect your computer to a network consult the network administrator before installing any software update...

Page 91: ...TE If you change the TPM setting to Hidden TPM is not visible in the operating system To access TPM settings in Computer Setup 1 Start Computer Setup See Starting Computer Setup on page 78 2 Select Security select TPM Embedded Security and then follow the on screen instructions Using HP Sure Start select products only Select computer models are configured with HP Sure Start a technology that monit...

Page 92: ...he following order a Connected USB drive NOTE To download the HP PC Hardware Diagnostics UEFI tool to a USB drive see Downloading HP PC Hardware Diagnostics UEFI to a USB device on page 82 b Hard drive c BIOS 3 When the diagnostic tool opens select the type of diagnostic test you want to run and then follow the on screen instructions NOTE If you need to stop a diagnostic test press esc Downloading...

Page 93: ... BIOS crisis recovery tool through the HP PC Hardware Diagnostics 3 in 1 USB key This tool can be used by HP authorized service providers to recover systems that have failed due to a corrupted BIOS For more information about using the 3 in 1 USB key for BIOS crisis recovery go to http www hp com go techcenter pcdiags Additional information is included in the web based training offered by HP Univer...

Page 94: ...HP Recovery partition on the computer The backup can be used to reinstall the original operating system in cases where the hard drive is corrupted or has been replaced For information on creating recovery media see Creating HP Recovery media select products only on page 84 For information on the recovery options that are available using the recovery media see Using Windows tools on page 85 Use Win...

Page 95: ...urchased separately to create recovery discs If you use an external optical drive it must be connected directly to a USB port on the computer the drive cannot be connected to a USB port on an external device such as a USB hub If you cannot create DVD media yourself you can obtain recovery discs for your computer from HP See the Worldwide Telephone Numbers booklet included with the computer You can...

Page 96: ...ove the recovery partition to reclaim hard drive space HP Recovery Manager offers the Remove Recovery Partition option For more information see Removing the HP Recovery partition select products only on page 89 Recovering using HP Recovery Manager HP Recovery Manager software allows you to recover the computer to its original factory state by using the HP Recovery media that you either created or ...

Page 97: ...overy discs or a recovery USB flash drive This type of recovery can be used only if the hard drive is still working To start HP Recovery Manager from the HP Recovery partition IMPORTANT For a tablet with a detachable keyboard connect the keyboard to the keyboard dock before beginning these steps select products only 1 Type recovery in the taskbar search box select Recovery Manager and then select ...

Page 98: ... boot order IMPORTANT For a tablet with a detachable keyboard connect the keyboard to the keyboard dock before beginning these steps 1 Insert the HP Recovery media 2 Access the system Startup menu For computers or tablets with keyboards attached Turn on or restart the computer or tablet quickly press esc and then press f9 for boot options For tablets without keyboards Turn on or restart the tablet...

Page 99: ...m the HP Recovery partition So before you remove the Recovery partition create HP Recovery media see Creating HP Recovery media select products only on page 84 NOTE The Remove Recovery Partition option is only available on products that support this function Follow these steps to remove the HP Recovery partition 1 Type recovery in the taskbar search box and then select HP Recovery Manager 2 Select...

Page 100: ...5 C 32 F to 95 F Operating writing to optical disc 5 C to 35 C 41 F to 95 F Nonoperating 20 C to 60 C 4 F to 140 F Relative humidity Operating 10 to 90 Nonoperating 5 to 95 Maximum altitude unpressurized Operating 14 7 to 10 1 psia 15 m to 3 048 m 50 ft to 10 000 ft Nonoperating 14 7 to 4 4 psia 15 m to 12 192 m 50 ft to 40 000 ft Shock Operating 125 g 2 ms half sine Nonoperating 200 g 2 ms half s...

Page 101: ...factor M 2 2280 D2 B M M 2 2280 D2 B M M 2 2280 D2 B M Transfer rate up to 540 MB sec up to 540 MB sec up to 540 MB sec Interface type SATA 3 SATA 3 SATA 3 Ready time maximum to not busy 1 0 ms 1 0 ms 1 0 ms Access times logical 0 1 ms 0 1 ms 0 1 ms Total logical sectors 234 441 648 468 883 296 937 766 592 Operating temperature 0 C to 70 C 32 F to 158 F 1 GB 1 billion bytes when referring to hard ...

Page 102: ...cluding setting Single track 1 4 ms 3 ms 2 ms Average 10 ms 13 ms 12 ms Maximum 12 ms 24 ms 22 ms Logical blocks 1 938 921 461 1 048 576 000 976 773 168 Disc rotational speed 5400 rpm 7200 rpm or 5400 rpm 5400 rpm Operating temperature 1 GB 1 billion bytes when referring to hard drive storage capacity Actual accessible capacity is less Actual drive specifications may differ slightly NOTE Certain r...

Page 103: ...s 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 amps and a nominal voltage rating of 125 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 3...

Page 104: ...and wall plug must bear a T mark and registration number in accordance with the Japanese Dentori Law The flexible cord must be Type VCT or VCTF 3 conductor 1 00 mm conductor size The wall plug must be a two pole grounding type with a Japanese Industrial Standard C8303 7 A 125 V configuration 4 The flexible cord must be Type RVV 3 conductor 0 75 mm conductor size Power cord set fittings appliance c...

Page 105: ...llow steps a through l below 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 press esc while the Press the ESC key for Startup Menu message is displayed at the bottom of the screen IMPORTANT If the Main menu displays Restor...

Page 106: ...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 IMPORTANT If you clear data using Secure Erase it cannot be recovered a Turn on or restart the computer and then press esc while the Press the ESC key for Startup Menu message is displayed at the b...

Page 107: ...then select Reset BIOS Security to factory default Click Yes at the warning message g Select the Main menu select Save Changes and Exit select Yes to save changes and exit and then select Shutdown h Reboot the system If the system has a Trusted Platform Module TPM and or fingerprint reader one or two prompts will appear one to clear the TPM and the other to Reset Fingerprint Sensor press or tap F1...

Page 108: ... models only on page 101 Data cannot be written to this device via the host processor The content is managed solely by the HP Sure Start Embedded Controller This memory is protected by the HP Sure Start Embedded Controller Real Time Clock RTC battery backed up CMOS configuration memory 256 Bytes No Yes Stores system date and time and noncritical data RTC battery backed up CMOS is programmed using ...

Page 109: ...e Management Engine MEBx setup utility The third party data store contents can be populated by a remote management console or local applications that have been registered by an administrator to have access to the space The Intel chipset is configured to enforce hardware protection to block all direct read write access to this area An Intel utility is required for updating the firmware Only firmwar...

Page 110: ...dustry standard software interface between the platform firmware and an operating system OS It is a replacement for the older BIOS architecture but supports much of the legacy BIOS functionality Like the legacy BIOS the UEFI BIOS provides an interface to display the system information and configuration settings and to change the configuration of your computer before an OS is loaded BIOS provides a...

Page 111: ...Secure Boot Keys be reset Secure Boot is a feature to ensure that only authenticated code can start on a platform If you enabled Secure Boot and created Custom Secure Boot Keys simply disabling Secure Boot will not clear the keys You must also select to clear the Custom Secure Boot Keys Use the same Secure Boot access procedure you used to create the Custom Secure Boot Keys but make the selection ...

Page 112: ...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 Web site at http www hp com recycle 102 Chapter 14 Recycling ...

Page 113: ...estoring factory settings 78 computer specifications 90 connector power 7 D display assembly removal 67 spare part numbers 67 subcomponents 21 display bezel removal 68 display cable spare part number 21 display enclosure spare part number 22 display hinge removal 70 display image switching 14 display panel product description 1 display specifications 91 docking product description 3 docking connec...

Page 114: ...art numbers 40 microphone product description 2 microphone module spare part number 21 microphone mute key identifying 14 microphone mute light identifying 10 minimized image recovery 87 minimized image creating 86 model name 1 N Near Field Communications NFC tapping area identifying 9 network jack identifying 7 NFC module removal 58 spare part number 19 58 nonvolatile memory 95 num lk light 10 O ...

Page 115: ...ns 91 solid state drive spare part numbers 23 speaker assembly removal 66 spare part number 66 speakers identifying 12 specifications computer 90 display 91 hard drive 92 solid state drive 91 supported discs recovery 85 Sure Start using 81 system board removal 62 spare part number 19 spare part numbers 62 system memory removing personal data from volatile 95 system recovery 86 system restore point...

Page 116: ...WLAN Bluetooth combo card removal 42 spare part number 20 42 WWAN antenna spare part number 22 WWAN antennas identifying 8 WWAN module removal 44 spare part number 20 44 106 Index ...

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HP ELITEBOOK 840 G4, Maintenance And Service Manual

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