Dell Inspiron 5521 Service Manual Download Page 4

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Removing the 4-cell battery..................................................................................................................................... 39
Installing the 4-cell battery....................................................................................................................................... 40

Assembly inner frame........................................................................................................................................................41

Removing the assembly inner frame........................................................................................................................41
Installing the assembly inner frame.........................................................................................................................43

LED board............................................................................................................................................................................44

Removing the LED board...........................................................................................................................................44
Installing the LED board.............................................................................................................................................45

Heat sink..............................................................................................................................................................................46

Speakers.............................................................................................................................................................................. 52

Removing the speakers..............................................................................................................................................52
Installing the speakers................................................................................................................................................52

USB type-C bracket......................................................................................................................................................... 53

Removing the USB type-C bracket........................................................................................................................ 53
Installing the USB type-C bracket...........................................................................................................................54

System board..................................................................................................................................................................... 55

Removing the system board.....................................................................................................................................55
Installing the system board....................................................................................................................................... 57

Power-button board.........................................................................................................................................................59

Removing the power-button board........................................................................................................................ 59
Installing the power-button board...........................................................................................................................60

Smart card reader..............................................................................................................................................................61

Removing the smart card reader..............................................................................................................................61
Installing the smart card reader............................................................................................................................... 62

Coin-cell battery................................................................................................................................................................64

Removing the coin-cell battery................................................................................................................................64
Installing the coin-cell battery..................................................................................................................................65

Keyboard assembly........................................................................................................................................................... 66

Removing the keyboard assembly...........................................................................................................................66
Installing the keyboard assembly............................................................................................................................. 67

Keyboard bracket.............................................................................................................................................................. 69

Removing the keyboard bracket..............................................................................................................................69
Installing the keyboard bracket................................................................................................................................ 70

Display assembly.................................................................................................................................................................71

Removing the display assembly................................................................................................................................ 71
Installing the display assembly..................................................................................................................................73

Display bezel....................................................................................................................................................................... 75

Removing the display bezel.......................................................................................................................................75
Installing the display bezel.........................................................................................................................................76

Display panel....................................................................................................................................................................... 77

Removing the display panel....................................................................................................................................... 77
Installing the display panel.........................................................................................................................................80

Camera/microphone module.......................................................................................................................................... 83

Removing the camera.................................................................................................................................................83
Installing the camera...................................................................................................................................................83

eDP/display cable..............................................................................................................................................................84

Contents

Summary of Contents for Inspiron 5521

Page 1: ...Latitude 5521 Service Manual Regulatory Model P104F Regulatory Type P104F003 P104F004 June 2021 Rev A00 ...

Page 2: ...ential damage to hardware or loss of data and tells you how to avoid the problem WARNING A WARNING indicates a potential for property damage personal injury or death 2021 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners ...

Page 3: ...ss card 22 Removing the wireless card 22 Installing the wireless card 23 Wireless Wide Area Network WWAN Card 25 Removing the WWAN card 25 Installing the WWAN card 26 Solid state drives 27 Removing the 2230 solid state drive 27 Installing the 2230 solid state drive 28 Removing the 2230 solid state drive slot 2 29 Installing the 2230 solid state drive slot 2 29 Removing the 2280 solid state drive 3...

Page 4: ...d 55 Removing the system board 55 Installing the system board 57 Power button board 59 Removing the power button board 59 Installing the power button board 60 Smart card reader 61 Removing the smart card reader 61 Installing the smart card reader 62 Coin cell battery 64 Removing the coin cell battery 64 Installing the coin cell battery 65 Keyboard assembly 66 Removing the keyboard assembly 66 Inst...

Page 5: ... Windows 108 Updating the BIOS in Linux and Ubuntu 109 Updating the BIOS using the USB drive in Windows 109 Updating the BIOS from the F12 One Time boot menu 109 System and setup password 110 Assigning a system setup password 110 Deleting or changing an existing system setup password 111 Clearing BIOS System Setup and System passwords 111 Chapter 5 Troubleshooting 112 Handling swollen Lithium ion ...

Page 6: ...Chapter 6 Getting help 118 Contacting Dell 118 6 Contents ...

Page 7: ... Dell technical assistance team Damage due to servicing that is not authorized by Dell is not covered by your warranty See the safety instructions that is shipped with the product or at www dell com regulatory_compliance CAUTION Before touching anything inside your computer ground yourself by touching an unpainted metal surface such as the metal at the back of the computer While you work periodica...

Page 8: ...ailures means that most of the time when damage occurs it is not immediately recognizable The DIMM receives a static shock but the tracing is merely weakened and does not immediately produce outward symptoms related to the damage The weakened trace may take weeks or months to melt and in the meantime may cause degradation of memory integrity intermittent memory errors etc The more difficult type o...

Page 9: ...meters away from sensitive parts before physically handling any hardware components ESD Packaging All ESD sensitive devices must be shipped and received in static safe packaging Metal static shielded bags are preferred However you should always return the damaged part using the same ESD bag and packaging that the new part arrived in The ESD bag should be folded over and taped shut and all the same...

Page 10: ...on the computer Your computer will automatically return to normal functioning mode After working inside your computer About this task CAUTION Leaving stray or loose screws inside your computer may severely damage your computer Steps 1 Replace all screws and ensure that no stray screws remain inside your computer 2 Connect any external devices peripherals or cables you removed before working on you...

Page 11: ...Memory Hard drive assembly Battery cable Battery Assembly inner frame LED board Heat sink Speakers USB type C bracket System board Power button board Smart card reader Coin cell battery Keyboard assembly Keyboard bracket Display assembly Display bezel Display panel Camera microphone module eDP display cable Sensor board Display hinges Display back cover Palm rest assembly Recommended tools The pro...

Page 12: ...y vary with the configuration ordered Table 1 Screw list Component Screw type Quantity Screw image Base cover Captive screws 8 N A Wireless card Captive screws 1 N A Wireless Wide Area Network WWAN Card M2x3 1 M 2 2230 solid state drive M2x3 4 M 2 2280 solid state drive M2x3 2 Assembly inner frame M2x3 M2x5 7 2 4 cell battery M2x3 2 Heat sink with fan assembly UMA M2x3 M2x5 for fan 4 2 Heat sink w...

Page 13: ...uantity Screw image Keyboard assembly M2x2 18 Keyboard bracket M2x2 5 Display assembly M2 5x5 display hinges to palm rest assembly 4 Display hinge M2 5x3 display hinges to display back cover 4 Display panel M2 5x3 2 Removing and installing components 13 ...

Page 14: ...Major components of your system 1 Base cover 14 Removing and installing components ...

Page 15: ...ct your Dell sales representative for purchase options SIM card tray Removing the SIM card tray Prerequisites Follow the procedure in Before working inside your computer NOTE SIM card or SIM card tray removal is only available on systems that are shipped with WWAN module The procedure for removal is only applicable for systems that are shipped with a WWAN module CAUTION Removing the SIM card with ...

Page 16: ...ing the SIM card Prerequisites If you are replacing a component remove the necessary component before the installation procedure NOTE SIM card or SIM card tray removal is only available on systems that are shipped with WWAN module Hence removing procedure is only applicable for systems that are shipped with WWAN module About this task The following image indicates the location of the SIM card and ...

Page 17: ...ter and carefully slide it in 5 Slide the SIM card tray into the slot until it clicks into place Next steps Follow the procedure in After working on your computer Micro Secure Digital SD Card Removing the microSD card Prerequisites Follow the procedure in Before working inside your computer Enter Service Mode About this task T The following images indicate the location of the microSD card and prov...

Page 18: ...icroSD card Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the microSD card and provides a visual representation of the installation procedure 18 Removing and installing components ...

Page 19: ...your computer Base cover Removing the base cover Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover About this task The following images indicate the location of the base cover and provide a visual representation of the removal procedure Removing and installing components 19 ...

Page 20: ... to release the base cover from the palm rest and keyboard assembly 3 Lift the base cover off the palm rest and keyboard assembly Installing the base cover Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following images indicate the location of the base cover and provide a visual representation of the in...

Page 21: ...Removing and installing components 21 ...

Page 22: ...teps 1 Install the microSD card 2 Install the SIM card 3 Exit Service Mode 4 Follow the procedure in After working inside your computer Wireless card Removing the wireless card Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover About this task The following images indicate the loca...

Page 23: ... the wireless card 3 Disconnect the antenna cables from the wireless card 4 Using a plastic scribe pry the wireless card from the adhesive pad 5 Slide and remove the wireless card from the wireless card slot Installing the wireless card Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indic...

Page 24: ...eless card with the tab on the wireless card slot on the system board 3 Slide and insert the wireless card at an angle into the wireless card slot on the system board 4 Adhere the wireless card to the adhesive pad 5 Align the screw hole on the wireless card bracket to the screw hole on the wireless card and system board 6 Tighten the captive screw that secures the wireless card bracket to the wire...

Page 25: ...ard 5 Remove the base cover About this task The following images indicate the location of the WWAN card and provide a visual representation of the removal procedure Steps 1 Remove the single M2x3 screw that secures the WWAN card bracket to the WWAN card 2 Lift the WWAN card bracket out of the system 3 Disconnect the antenna cables from the connectors on the WWAN card 4 Slide and remove the WWAN ca...

Page 26: ... The following table provides the antenna cable color scheme Table 3 Antenna cable color scheme Connectors on the wireless card Antenna cable color Silkscreen marking Main White MAIN white triangle Auxiliary Black AUX black triangle 2 Align the notch on the WWAN card and slide the WWAN card at an angle into the WWAN card slot 3 Align and place the WWAN card bracket on the system board and WWAN car...

Page 27: ...e fragile Exercise care when handling the solid state drive NOTE To avoid data loss do not remove the solid state drive while the computer is in sleep or on state 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover About this task NOTE Depending on the configuration ordered your computer may support a 2230 solid state drive or a 2280 solid state drive in M ...

Page 28: ... support a 2230 solid state drive or a 2280 solid state drive in M 2 slot NOTE This procedure applies only if you are installing a 2230 solid state drive in M 2 slot The following image indicates the location of the 2230 solid state drive that is installed in M 2 slot and provides a visual representation of the installation procedure Steps 1 Align the notch on the 2230 solid state drive with the t...

Page 29: ...t NOTE This procedure applies only to computers shipped with a 2230 solid state drive installed in M 2 slot The following image indicates the location of the 2230 solid state drive that is installed and provides a visual representation of the removal procedure Steps 1 Remove the two M2x2 screws that secures the thermal plate to the palm rest assembly 2 Remove the single M2x2 screw securing the sol...

Page 30: ...olid state drive slot 3 Replace the single M2x2 screw securing the solid state drive to the solid state drive slot 4 Place the thermal plate on the solid state drive 5 Replace the two M2x2 screws that secure the thermal plate and solid state drive to the palm rest assembly Next steps 1 Install the microSD card 2 Install the SIM card 3 Install the base cover 4 Exit Service Mode 5 Follow the procedu...

Page 31: ...e out of the system 3 Slide and lift the 2280 solid state drive off the M 2 solid state drive slot on the system Installing the 2280 solid state drive Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task NOTE Solid state drives are fragile Exercise care when handling the solid state drive NOTE Depending on the con...

Page 32: ...te drive to the palm rest and keyboard assembly Next steps 1 Install the microSD card 2 Install the SIM card 3 Install the base cover 4 Exit Service Mode 5 Follow the procedure in After working inside your computer Memory Removing the memory module Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remo...

Page 33: ...s installed in your computer Installing the memory module Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task NOTE Latitude 5521 supports two memory slots The following image indicates the location of the memory module and provides a visual representation of the installation procedure Removing and installing comp...

Page 34: ...your computer Next steps 1 Install the base cover 2 Install the microSD card 3 Install the SIM card 4 Exit Service Mode 5 Follow the procedure in After working inside your computer Hard drive assembly Removing the Hard drive Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover About ...

Page 35: ...system board 4 Remove the Hard drive from the computer Installing the Hard drive Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The figure indicates the location of the HDD and provides a visual representation of the installation procedure Removing and installing components 35 ...

Page 36: ...edure in After working inside your computer Battery cable Removing the battery cable Prerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the SIM card 3 Remove the microSD card 4 Remove the base cover NOTE If battery is disconnected from system board for service then there is a delay during system boot as the system undergoes RTC battery reset About this task The fo...

Page 37: ...he battery cable off the battery Installing the battery cable Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the battery cable and provides a visual representation of the installation procedure Removing and installing components 37 ...

Page 38: ...ct the AC power adapter from the system and operate the computer solely on battery power the battery is fully discharged when the computer no longer turns on when the power button is pressed Do not crush drop mutilate or penetrate the battery with foreign objects Do not expose the battery to high temperatures or disassemble battery packs and cells Do not apply pressure to the surface of the batter...

Page 39: ...rerequisites 1 Follow the procedure in Before working inside your computer 2 Remove the SIM card 3 Remove the microSD card 4 Remove the base cover About this task The following image indicates the location of the 4 cell 64 Wh battery and provides a visual representation of the removal procedure Steps 1 Disconnect the battery cable from the connector system board 2 Remove the three M2x4 screws that...

Page 40: ...ment posts slide and place the 4 cell battery on the palm rest and keyboard assembly 2 Align the screw holes on the 4 cell battery with the screw holes on the palm rest and keyboard assembly 3 Replace the three M2x4 screws that secure the 4 cell battery to the palm rest and keyboard assembly 4 Connect the battery cable to the connector system board Next steps 1 Install the base cover 2 Install the...

Page 41: ... the SIM card 3 Remove the microSD card 4 Remove the base cover 5 Remove the battery 6 Remove the hard drive 7 Remove the WLAN card 8 Remove the WWAN card About this task The following image indicates the location of the assembly inner frame and provides a visual representation of the removal procedure Removing and installing components 41 ...

Page 42: ...nner frame bracket to the system board and the palm rest assembly 3 Remove the assembly inner frame bracket 4 Remove the seventeen screws M2x3 that secure the assembly inner frame to the system board and the palm rest assembly 5 Lift the assembly inner frame off the system board and the palm rest assembly 42 Removing and installing components ...

Page 43: ...stallation procedure About this task The following image indicates the location of the assembly inner frame and provides a visual representation of the installation procedure Steps 1 Align the screw holes on the assembly inner frame with the screw holes on the system board and the palm rest assembly Removing and installing components 43 ...

Page 44: ...he assembly inner frame Next steps 1 Install the battery 2 Install the hard drive 3 Install the WWAN card 4 Install the WLAN card 5 Install the base cover 6 Install the microSD card 7 Install the SIM card 8 Exit Service Mode 9 Follow the procedure in After working inside your computer LED board Removing the LED board Prerequisites 1 Follow the procedure in Before working inside your computer 2 Ent...

Page 45: ...he palm rest assembly 4 Lift the LED board and cable away from the palm rest assembly Installing the LED board Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the LED board and provides a visual representation of the installation procedure Removing and installing ...

Page 46: ...stem board 4 Connect the touchpad cable to the connector on the system board Next steps 1 Install the assembly inner frame 2 Install the battery 3 Install the hard drive 4 Install the WWAN card 5 Install the WLAN card 6 Install the 2280 solid state drive or 2230 solid state drive 7 Install the base cover 8 Install the microSD card 9 Install the SIM card 10 Exit Service Mode 11 Follow the procedure...

Page 47: ...ve the microSD card 5 Remove the base cover About this task The following images indicate the location of the heat sink and fan assembly for a system with UMA configuration and provide a visual representation of the removal procedure Steps 1 Remove the two M2x4 screws that secure the system fan to the frame 2 In reverse sequential order as indicated on the heat sink loosen the four captive screws ...

Page 48: ...eved About this task The following image indicates the location of the heat sink and fan assembly for a system with UMA configuration and provides a visual representation of the installation procedure Steps 1 Align the screw holes on the heat sink and fan assembly with the screw holes on the system board 2 In sequential order as indicated on the heat sink tighten the four captive screws that secur...

Page 49: ...eat transfer areas on the heat sink The oils in your skin can reduce the heat transfer capability of the thermal grease NOTE The heat sink may become hot during normal operation Allow sufficient time for the heat sink to cool before you touch it 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover About this task The following images indicate the location of...

Page 50: ...ration Prerequisites If you are replacing a component remove the existing component before performing the installation procedure CAUTION Incorrect alignment of the heat sink can damage the system board and processor NOTE If either the system board or the heat sink is replaced use the thermal pad paste provided in the kit to ensure that thermal conductivity is achieved About this task The following...

Page 51: ...ws that secure the heat sink to the system board 3 Connect the fan cable to the connector on the system board 4 Replace the two M2x4 screws that secure the system fan to the frame Next steps 1 Install the microSD card 2 Install the SIM card 3 Install the base cover 4 Exit Service Mode 5 Follow the procedure in After working inside your computer Removing and installing components 51 ...

Page 52: ...he palm rest and keyboard assembly 2 Note the speaker cable routing and remove the speaker cable from the routing guides on the palm rest and keyboard assembly 3 Disconnect the speaker cable from the system board 4 Lift the speakers along with the cable off the palm rest and keyboard assembly Installing the speakers Prerequisites If you are replacing a component remove the existing component befor...

Page 53: ...ttery 2 Install the hard drive 3 Install the base cover 4 Install the microSD card 5 Install the SIM card 6 Follow the procedure in After working inside your computer USB type C bracket Removing the USB type C bracket Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover About this ta...

Page 54: ...talling the USB type C bracket Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the USB type C bracket and provides a visual representation of the installation procedure 54 Removing and installing components ...

Page 55: ...orking inside your computer System board Removing the system board Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover 6 Remove the memory module 7 Remove the 2280 solid state drive or 2230 solid state drive 8 Remove the WLAN card 9 Remove the WWAN card 10 Remove the battery 11 Remo...

Page 56: ...About this task The following images indicate the location of the system board and provide a visual representation of the removal procedure 56 Removing and installing components ...

Page 57: ...lay cable from the connector on the system board 9 Disconnect IR camera cable from the connector on the system board for models shipped with an IR camera 10 Disconnect the touchscreen cable from the connector on the system board for models shipped with a touchscreen 11 Open the latch and disconnect the USH board cable from the connector on the system board 12 Open the latch and disconnect the touc...

Page 58: ...58 Removing and installing components ...

Page 59: ...w holes on the system board 12 Replace the two M2x3 screws that secure the eDP display cable bracket to the system board 13 Connect the touchscreen cable from the connector on the system board for models shipped with a touchscreen 14 Connect IR camera cable from the connector on the system board for models shipped with an IR camera 15 Route the coin cell battery cable under the system board and co...

Page 60: ...on of the removal procedure Steps 1 Remove the two screws M2x2 that secure the power button board to the palm rest assembly 2 Lift the power button board off the palm rest assembly Installing the power button board About this task The following images indicate the location of the power button board and provide a visual representation of the installation procedure 60 Removing and installing compone...

Page 61: ...solid state drive or 2230 solid state drive 7 Install the memory module 8 Install the base cover 9 Install the microSD card 10 Install the SIM card 11 Follow the procedure in After working inside your computer Smart card reader Removing the smart card reader Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD c...

Page 62: ...d disconnect the smart card reader cable from the connector on the USH board 2 Peek back the adhesive tape from the smart card reader 3 Remove the three screws M2x3 that secure the smart card reader to the palm rest assembly 4 Lift the smart card reader off the palm rest assembly Installing the smart card reader Prerequisites If you are replacing a component remove the existing component before pe...

Page 63: ... reader to the palm rest assembly 3 Adhere the adhesive tape back on the smart card reader 4 Connect the smart card reader cable to the connector on the USH board Next steps 1 Install the assembly inner frame 2 Install the battery 3 Install the WWAN card 4 Install the WLAN card 5 Install the 2280 solid state drive or 2230 solid state drive 6 Install the memory module 7 Install the base cover 8 Ins...

Page 64: ...d 4 Remove the microSD card 5 Remove the base cover 6 Remove the memory module 7 Remove the 2280 solid state drive or 2230 solid state drive 8 Remove the WLAN card 9 Remove the WWAN card 10 Remove the battery 11 Remove the heat sink UMA or discrete based on the system configuration 12 Remove the assembly inner frame About this task The following images indicate the location of the coin cell batter...

Page 65: ...re the coin cell battery to the slot on the palm rest assembly 2 Connect the coin cell battery cable to the connector Next steps 1 Install the assembly inner frame 2 Install the battery 3 Install the WWAN card 4 Install the WLAN card 5 Install the 2280 solid state drive or 2230 solid state drive 6 Install the memory module 7 Install the base cover 8 Install the microSD card 9 Install the SIM card ...

Page 66: ...9 Remove the WWAN card 10 Remove the battery 11 Remove the heat sink UMA or discrete based on the system configuration 12 Remove the assembly inner frame 13 Remove the system board NOTE The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink About this task The following images indicate the ...

Page 67: ...embly to the palm rest 3 Carefully lift the keyboard assembly from the palm rest 4 Remove the keyboard assembly off the palm rest assembly Installing the keyboard assembly Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task NOTE The system board can be installed with the heat sink attached in order to simplify th...

Page 68: ...ble and keyboard backlit cable to its connectors on the touchpad NOTE For models shipped with a USH module connect the USH cable to the keyboard bracket Next steps 1 Install the system board 2 Install the assembly inner frame 3 Install the heat sink UMA or discrete based on the system configuration 4 Install the battery 5 Install the WWAN card 6 Install the WLAN card 7 Install the 2280 solid state...

Page 69: ...ory module 7 Remove the 2280 solid state drive or 2230 solid state drive 8 Remove the WLAN card 9 Remove the WWAN card 10 Remove the battery 11 Remove the heat sink UMA or discrete based on the system configuration 12 Remove the assembly inner frame About this task The following images indicate the location of the keyboard bracket and provide a visual representation of the removal procedure Steps ...

Page 70: ...and place the keyboard on the keyboard bracket 2 Replace the fourteen M2x2 screws to secure the keyboard to the keyboard bracket Next steps 1 Install the keyboard assembly 2 Install the system board 3 Install the assembly inner frame 4 Install the speakers 5 Install the heat sink UMA or discrete based on the system configuration 6 Install the battery 7 Install the WWAN card 8 Install the WLAN card...

Page 71: ...r 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover 6 Remove the WLAN card 7 Remove the WWAN card About this task The following images indicate the location of the display assembly and provide a visual representation of the removal procedure Removing and installing components 71 ...

Page 72: ...72 Removing and installing components ...

Page 73: ... connector on the system board for models shipped with an IR camera 8 Disconnect the touchscreen cable from its connector on the system board for models shipped with a touchscreen 9 Remove the six M2 5x5 screws that secure the display hinges to the system board 10 Open the display assembly to a 180 degrees and flip over the system and then place the system on a flat surface 11 Remove the display a...

Page 74: ...74 Removing and installing components ...

Page 75: ... its connector on the system board for models shipped with a touchscreen 10 Align the screw holes on the eDP cable bracket with the screw holes on the system board 11 Replace the two screws M2x3 that secure the eDP cable bracket to the system board 12 Route the WLAN and WWAN antenna cables through the routing guide and adhere the tape to secure the cables to the system board Next steps 1 Install t...

Page 76: ...Carefully pry and remove the display bezel to minimize the risk of display panel damages 1 Insert a plastic scribe into the recesses near both hinge caps to start the prying process to release the display bezel 2 Pry along the outside edge of the display bezel and work your way around the entire display bezel until the display bezel is separated from the display cover 3 Lift the display bezel from...

Page 77: ...microSD card 6 Install the SIM card 7 Exit Service Mode 8 Follow the procedure in After working inside your computer Display panel Removing the display panel Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover 6 Remove the WLAN card 7 Remove the WWAN card 8 Remove the display assemb...

Page 78: ...Remove the display bezel About this task The following images indicate the location of the display panel and provide a visual representation of the removal procedure 78 Removing and installing components ...

Page 79: ...Removing and installing components 79 ...

Page 80: ...anel to access the display cable 3 Peel the conductive tape on the display cable connector 4 Peel the clear tape covering the display cable connector 5 Open the latch and disconnect the cable from the connector on the display panel 6 Lift the display panel away from the display back cover Installing the display panel Prerequisites If you are replacing a component remove the existing component befo...

Page 81: ...Removing and installing components 81 ...

Page 82: ...ble NOTE Ensure that the display panel tabs are inserted into the slots on the display cover 5 Replace the four M2 5x3 5 screws to secure the display panel to the display back cover Next steps 1 Install the display bezel 2 Install the display assembly 3 Install the WWAN card 4 Install the WLAN card 5 Install the base cover 6 Install the microSD card 7 Install the SIM card 8 Exit Service Mode 9 Fol...

Page 83: ...tation of the removal procedure Steps 1 Peel the tape that secures the camera cable NOTE An abrupt peeling may also remove the camera shutter from the display bezel and damage the camera shutter 2 Lift the latch and disconnect the camera cable from the connector on the camera module 3 Carefully pry up the camera module starting from the prying point at the bottom edge of the camera module 4 Carefu...

Page 84: ...y panel 3 Install the display bezel 4 Install the display assembly 5 Install the base cover 6 Install the microSD card 7 Install the SIM card 8 Exit Service Mode 9 Follow the procedure in After working inside your computer eDP display cable Removing the eDP cable Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the micr...

Page 85: ...tape and unroute the eDP display cable to release it from adhesive and lift the eDP display cable from the display back cover Installing the eDP cable Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following image indicates the location of the eDP cable and provides a visual representation of the install...

Page 86: ...play cable to the display back cover Next steps 1 Install the display panel 2 Install the display bezel 3 Install the display assembly 4 Install the WWAN card 5 Install the WLAN card 6 Install the base cover 7 Install the microSD card 8 Install the SIM card 9 Exit Service Mode 10 Follow the procedure in After working inside your computer 86 Removing and installing components ...

Page 87: ... NOTE This procedure applies only to computers shipped with a sensor board The following images indicate the location of the sensor board and provide a visual representation of the removal procedure Steps 1 Open the latch and disconnect the LED cable from connector on the sensor board 2 Gently lift the sensor board away from the display back cover Installing the sensor board About this task The fo...

Page 88: ...ver 7 Install the microSD card 8 Install the SIM card 9 Exit Service Mode 10 Follow the procedure in After working inside your computer Display hinges Removing the display hinges Prerequisites 1 Follow the procedure in Before working inside your computer 2 Enter Service Mode 3 Remove the SIM card 4 Remove the microSD card 5 Remove the base cover 6 Remove the WLAN card 7 Remove the WWAN card 8 Remo...

Page 89: ... cover 3 Remove the single M2 5x3 5 screw that secures the left hinge to the display back cover 4 Lift and remove the left hinge from the display back cover Installing the display hinges Prerequisites If you are replacing a component remove the existing component before performing the installation procedure About this task The following images indicate the location of the display hinges and provid...

Page 90: ...e display back cover 4 Replace the single M2 5x3 5 screw to secure the right hinge to the display back cover Next steps 1 Install the display panel 2 Install the display bezel 3 Install the display assembly 4 Install the WWAN card 5 Install the WLAN card 6 Install the base cover 7 Install the microSD card 8 Install the SIM card 9 Exit Service Mode 10 Follow the procedure in After working inside yo...

Page 91: ...e display assembly 9 Remove the display bezel 10 Remove the display panel 11 Remove the camera microphone module 12 Remove the eDP display cable 13 Remove the sensor board 14 Remove the display hinges About this task The following images indicate the location of the display back cover and provide a visual representation of the removal procedure Steps After performing the steps in the pre requisite...

Page 92: ...lace the display back cover on a flat surface Next steps 1 Install the display hinges 2 Install the sensor board 3 Install the eDP display cable 4 Install the camera microphone module 5 Install the display panel 6 Install the display bezel 7 Install the display assembly 8 Install the WWAN card 9 Install the WLAN card 10 Install the base cover 11 Install the microSD card 12 Install the SIM card 13 ...

Page 93: ...rete based on the system configuration 12 Remove the speakers 13 Remove the assembly inner frame 14 Remove the system board NOTE The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink 15 Remove the power button board 16 Remove the LED board 17 Remove the smart card reader 18 Remove the keyb...

Page 94: ...at surface 2 Remove the dummy SIM card filler for the non WWAN LTE configuration Next steps 1 Install the display assembly 2 Install the keyboard assembly 3 Install the smart card reader 4 Install the LED board 5 Install the power button board 6 Install the system board 7 Install the assembly inner frame 8 Install the speakers 9 Install the heat sink UMA or discrete based on the system configurati...

Page 95: ...16 Install the microSD card 17 Install the SIM card 18 Exit Service Mode 19 Follow the procedure in After working inside your computer Removing and installing components 95 ...

Page 96: ... for browser specific instructions 8 Click View Drivers for My System 9 Click Download and Install to download and install all driver updates detected for your computer 10 Select a location to save the files 11 If prompted approve requests from User Account Control to make changes on the system 12 The application installs all drivers and updates identified NOTE Not all files can be installed autom...

Page 97: ...ntering BIOS setup program Navigation keys One time boot menu Boot Sequence System setup options Updating the BIOS System and setup password Clearing BIOS System Setup and System passwords BIOS overview The BIOS manages data flow between the computer s operating system and attached devices such as hard disk video adapter keyboard mouse and printer Entering BIOS setup program About this task Turn o...

Page 98: ...ical drive or hard drive During the Power on Self Test POST when the Dell logo appears you can Access System Setup by pressing F2 key Bring up the one time boot menu by pressing F12 key The one time boot menu displays the devices that you can boot from including the diagnostic option The boot menu options are Windows Boot Manager UEFI HTTPs Boot UEFI RST Micron 2300 NVMe 512 GB 20502C1A4567 ONBOAR...

Page 99: ...e size Microcode Version Displays the microcode version Intel Hyper Threading Capable Displays whether the processor is Hyper Threading HT capable 64 Bit Technology Displays whether 64 bit technology is used Memory Information Memory Installed Displays the total computer memory installed Memory Available Displays the total computer memory available Memory Speed Displays the memory speed Memory Cha...

Page 100: ...lect the custom values for expert key management Table 6 System setup options Integrated Devices menu Integrated Devices Date Time Displays the current date in MM DD YYYY format and current time in HH MM SS AM PM format Camera Enables or disable the camera By default the Enable Camera option is selected Audio Enable Audio Enable or disable the integrated audio controller By default all the options...

Page 101: ...abled Audio Enable or disable the usage of audio on Dell Dock external ports By default the Audio option is enabled Lan Enable or disable the usage of LAN on Dell Dock external ports By default the Lan option is enabled Miscellaneous Devices Enable or disable Fingerprint Reader device By default the Enable Fingerprint Reader Device option is enabled Unobtrusive Mode Enable Unobtrusive Mode Enable ...

Page 102: ...ion menu Connection Network Controller Configuration Integrated NIC Controls the on board LAN controller By default the Enabled with PXE option is enabled Enable UEFI Network Stack Enable or disable UEFI Network Stack By default the Enable UEFI Network Stack and Enabled w PXE option are enabled Wireless Device Enable WWAN GPS Enable or disable the internal WWAN GPS device By default the option ena...

Page 103: ...the Adaptive option is enabled Advanced Configuration Enable Advanced Battery Charge Configuration Enable or disable the advanced battery charge configuration By default the Enable Advanced Battery Charge Configuration option is disabled Peak Shift Enables the computer to run on battery during peak power usage hours By default the Enable Peak Shift option is enabled Enable Peak Shift USB PowerShar...

Page 104: ...option is disabled PPI ByPass for Clear Commands Controls the TPM Physical Presence Interface PPI By default the PPI ByPass for clear Commands option is disabled Intel Total Memory Encryption Total Memory Encryption Enable or disable you to protect memory from physical attacks including freeze spray probing DDR to read the cycles and others By default the Total Memory Encryption option is disabled...

Page 105: ... Changes Enable Non Admin Password Changes Enable or disable to change computer and hard drive password without the need for admin password By default the option is enabled Admin Setup Lockout Enable Admin Setup Lockout Enables administrators control over how their users can or cannot access BIOS setup By default the option is disabled Master Password Lockout Enable Master Password Lockout When en...

Page 106: ... Tag of the computer Asset Tag Create a computer Asset Tag AC Behavior Wake on AC Enable or disable the wake on AC option By default the option is disabled Wake on LAN Wake on LAN Enable or disable the computer to power on by special LAN signals when it receives a wakeup signal from the WLAN By default the Disabled option is selected Auto on Time Enable to set the computer to turn on automatically...

Page 107: ...ault the Prompt on Warnings and Errors option is enabled Fastboot Enable to set the speed of the boot process By default the Minimal option is enabled Extend BIOS POST Time Set the BIOS POST time By default the 0 seconds option is enabled MAC Address Pass Through Replaces the external NIC MAC address with the selected MAC address from the computer By default the System Unique MAC Address option is...

Page 108: ... If BitLocker is not suspended before updating the BIOS the next time you reboot the system it will not recognize the BitLocker key You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot If the recovery key is not known this can result in data loss or an unnecessary operating system re install For more information on this subject see Knowled...

Page 109: ... setup program filename and press Enter The BIOS Update Utility appears 8 Follow the on screen instructions to complete the BIOS update Updating the BIOS from the F12 One Time boot menu Update your computer BIOS using the BIOS update exe file that is copied to a FAT32 USB drive and booting from the F12 One Time boot menu About this task CAUTION If BitLocker is not suspended before updating the BIO...

Page 110: ...d setup password Password type Description System password Password that you must enter to log on to your system Setup password Password that you must enter to access and make changes to the BIOS settings of your computer You can create a system password and a setup password to secure your computer CAUTION The password features provide a basic level of security for the data on your computer CAUTIO...

Page 111: ...ress Enter The System Security screen is displayed 2 In the System Security screen verify that Password Status is Unlocked 3 Select System Password alter or delete the existing system password and press Enter or Tab 4 Select Setup Password alter or delete the existing setup password and press Enter or Tab NOTE If you change the System and or Setup password re enter the new password when prompted I...

Page 112: ...ystem To discharge the battery unplug the AC adapter from the system and operate the system only on battery power When the system will no longer power on when the power button is pressed the battery is fully discharged Do not crush drop mutilate or penetrate the battery with foreign objects Do not expose the battery to high temperatures or disassemble battery packs and cells Do not apply pressure ...

Page 113: ...nce Check Steps 1 Turn on your computer 2 As the computer boots press the F12 key as the Dell logo appears 3 On the boot menu screen select the Diagnostics option 4 Click the arrow at the bottom left corner Diagnostics front page is displayed 5 Click the arrow in the lower right corner to go to the page listing The items detected are listed 6 To run a diagnostic test on a specific device press Esc...

Page 114: ...shown check to see if the display cable is properly connected 4 For cases when a 2 8 error code is shown replace the system board LCD Built in Self Test BIST Dell laptops have a built in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with the LCD screen of the Dell laptop or with the video card GPU and PC settings When you notice scre...

Page 115: ... board 1 2 Unrecoverable SPI flash failure Replace the system board 1 5 EC unable to program i Fuse Replace the system board 1 6 Generic catch all for ungraceful EC code flow errors Disconnect all power source AC battery coin cell and drain flea power by pressing holding down power button 2 1 CPU failure Run the Intel CPU diagnostics tools If problem persists replace the system board 2 2 System Bo...

Page 116: ... the operating system It enables you to diagnose hardware issues repair your computer back up your files or restore your computer to its factory state You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures For more information about the Dell SupportAssist OS Recovery...

Page 117: ...tery is removed For your safety and to protect the sensitive electronic components in your computer you are requested to drain residual flea power before removing or replacing any components in your computer Draining residual flea power also known as a performing a hard reset is also a common troubleshooting step if your computer does not power on or boot into the operating system To drain residua...

Page 118: ...and telephone based support and service options Availability varies by country and product and some services may not be available in your area To contact Dell for sales technical support or customer service issues Steps 1 Go to Dell com support 2 Select your support category 3 Verify your country or region in the Choose a Country Region drop down list at the bottom of the page 4 Select the appropr...

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Dell Inspiron 5521, Service Manual

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