Dell Inspiron 3502 Service Manual
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Dell Inspiron 3502 Service Manual

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Inspiron 3502
Service Manual
Regulatory Model: P90F
Regulatory Type: P90F003
August 2021
Rev. A03

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Summary of Contents for Dell Inspiron 3502

  • Page 1 Inspiron 3502 Service Manual Regulatory Model: P90F Regulatory Type: P90F003 August 2021 Rev. A03...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2020-2021 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: Table Of Contents

    Transporting sensitive components..........................8 After working inside your computer..........................8 Chapter 2: Removing and installing components................9 Recommended tools................................9 Screw list....................................9 Major components of Inspiron 3502..........................10 Base cover................................... 12 Removing the base cover............................12 Installing the base cover.............................14 Solid-state drive................................. 16 Removing the M.2 2230 solid-state drive......................16...
  • Page 4 Installing the heat sink..............................36 Power button with optional fingerprint reader......................37 Removing the power-button with optional fingerprint reader................37 Installing the power-button with optional fingerprint reader................38 Fingerprint-reader board..............................39 Removing the fingerprint-reader board......................... 39 Installing the fingerprint-reader board........................39 Display assembly................................40 Removing the display assembly..........................
  • Page 5 Updating the BIOS from the F12 One-Time boot menu..................72 Chapter 5: Troubleshooting......................73 Handling swollen Lithium-ion batteries........................73 Locate the Service Tag or Express Service Code of your Dell computer ..........73 System diagnostic lights..............................74 SupportAssist | On-board Diagnostics......................... 75 Recovering the operating system..........................

  • Page 6: Chapter 1: Working Inside Your Computer

    You should only perform troubleshooting and repairs as authorized or directed by the 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.

  • Page 7: Electrostatic Discharge-Esd Protection

    ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.

  • Page 8: Transporting Sensitive Components

    It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

  • Page 9: Chapter 2: Removing And Installing Components

    Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Recommended tools The procedures in this document may require the following tools: ● Phillips screwdriver #0 ● Phillips screwdriver #1 ●...

  • Page 10: Major Components Of Inspiron 3502

    Palm-rest and keyboard M2x4 assembly Touchpad Palm-rest and keyboard M2x2 assembly Touchpad bracket Palm-rest and keyboard M2x2 assembly Wireless-card bracket System board M2x3 Major components of Inspiron 3502 The following image shows the major components of Inspiron 3502. Removing and installing components...
  • Page 11 1. Base cover 2. Battery 3. Power-adapter port 4. Wireless card 5. M.2 2280 solid-state drive, if installed 6. System board 7. M.2 2230 solid-state drive, if installed 8. Memory module 9. Speakers 10. Palm-rest and keyboard assembly 11. Touchpad 12.

  • Page 12: Base Cover

    17. Heat sink NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
  • Page 13 Removing and installing components...

  • Page 14: Installing The Base Cover

    Steps 1. Remove the seven screws (M2.5x6) that secure the base cover to the palm-rest and keyboard assembly. 2. Loosen the two captive screws (M2.5x2.5+5) that secure the base cover to the palm-rest and keyboard assembly. 3. Using a plastic scribe, pry the base cover from the bottom left and continue to work on the sides to open the base cover. 4.
  • Page 15 Removing and installing components...

  • Page 16: Solid-State Drive

    Steps 1. Connect the battery cable to the connector on the system board. 2. Place and snap the base cover into place on the palm-rest and keyboard assembly. 3. Tighten the two captive screws (M2.5x2.5+5) that secure the base cover to the palm-rest and keyboard assembly. 4.

  • Page 17: Installing The M.2 2230 Solid-State Drive

    ● M.2 2230 solid-state drive + 2230 mounting bracket ● M.2 2280 solid-state drive The following images indicate the location of the M.2 2230 solid-state drive and provides a visual representation of the removal procedure. Steps 1. Remove the screw (M2x2.2) that secures the M.2 thermal shield to the palm-rest and keyboard assembly. 2.

  • Page 18: Removing The M.2 2280 Solid-State Drive

    Steps 1. Place the M.2 2230 solid-state drive on the M.2 thermal shield. 2. Align the screw hole on the M.2 2230 solid-state drive to the screw mount on the M.2 thermal shield. 3. Replace the screw (M2x2) that secures the M.2 2230 solid-state drive to the M.2 thermal shield. 4.

  • Page 19: Installing The M.2 2280 Solid-State Drive

    ● M.2 2280 solid-state drive The following images indicate the location of the M.2 2280 solid-state drive and provides a visual representation of the removal procedure. Steps 1. Remove the screw (M2x2.2) that secures the M.2 thermal shield to the palm-rest and keyboard assembly. 2.

  • Page 20: Memory Module

    Steps 1. Align the notch on the M.2 2280 solid-state drive with the tab on the M.2 card slot on the system board. 2. Slide the M.2 2280 solid-state drive into the M.2 card slot on the system board. 3. Place the M.2 thermal shield on the M.2 2280 solid-state drive. 4.

  • Page 21: Installing The Memory Module

    Steps 1. Use your fingertips to carefully spread apart the securing-clips on each end of the memory-module slot until the memory module pops up. 2. Lift at an angle and remove the memory module from its slot on the system board. 3.

  • Page 22: Wireless Card

    Steps 1. Align the slot on the memory module with the notch on the memory module slot on the system board. 2. Slide the memory module into the slot on the system board. 3. Press down on the memory module to snap it into place. 4.

  • Page 23: Installing The Wireless Card

    Steps 1. Remove the screw (M2x3) that secures the wireless-card bracket to the system board. 2. Lift the wireless-card bracket off the system board. 3. Disconnect the antenna cables from the wireless card. 4. Slide and remove the wireless card from the M.2 card slot on the system board. Installing the wireless card Prerequisites If you are replacing a component, remove the existing component before performing the installation process.
  • Page 24 Steps 1. Connect the antenna cables to the wireless card. The following table provides the antenna-cable color scheme for the wireless card supported by your computer. Table 2. Antenna-cable color scheme Connectors on the wireless card Antenna-cable color Main (white triangle) White Auxiliary (black triangle) Black...

  • Page 25: Battery

    ● If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.

  • Page 26: Installing The Battery

    Steps 1. Disconnect the battery cable from the system board, if applicable. 2. Remove the three screws (M2x3) that secure the battery to the palm-rest and keyboard assembly. 3. Slide and lift the battery off the palm-rest and keyboard assembly. Installing the battery Prerequisites If you are replacing a component, remove the existing component before performing the installation process.

  • Page 27: Hard Drive

    Steps 1. Slide the notch on the battery under the tab on the palm-rest and keyboard assembly and place the battery on the palm-rest and keyboard assembly. 2. Align the screw holes on the battery to the screw holes on the palm-rest and keyboard assembly. 3.

  • Page 28: Installing The Hard Drive

    Steps 1. Disconnect the hard-drive cable from the system board. 2. Remove the three screws (M2x3) that secure the hard-drive assembly to the palm-rest and keyboard assembly. 3. Lift the hard-drive assembly along with its cable from the palm-rest and keyboard assembly. 4.
  • Page 29 Steps 1. Place and slide the hard drive into the hard-drive bracket. 2. Align the screw holes on the hard-drive bracket with the screw holes on the hard drive. 3. Replace the four screws (M3x3) that secure the hard-drive bracket to the hard drive. 4.

  • Page 30: I/O Board

    I/O board Removing the I/O board Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The following images indicate the location of the I/O board and provides a visual representation of the removal procedure. Steps 1.

  • Page 31: Installing The I/O Board

    Installing the I/O board Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the I/O board and provides a visual representation of the installation procedure. Steps 1.

  • Page 32: Coin-Cell Battery

    Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the board. About this task The following images indicate the location of the coin-cell battery and provides a visual representation of the removal procedure. Steps 1.

  • Page 33: Speakers

    Steps 1. Place the coin-cell battery into the coin-cell battery holder on the I/O board with the plus sign facing up. 2. Press down on the coin-cell battery to lock it in place in the coin-cell battery holder. 3. Turn the I/O board over. Next steps 1.

  • Page 34: Installing The Speakers

    Steps 1. Disconnect the speaker cable from the system board. 2. Remove the speaker cable from the routing guides on the palm-rest and keyboard assembly. 3. Lift the speakers along with its cable off the palm-rest and keyboard assembly. Installing the speakers Prerequisites If you are replacing a component, remove the existing component before performing the installation process.

  • Page 35: Heat Sink

    Steps 1. Using the alignment posts, place the speakers on the palm-rest and keyboard assembly. NOTE: Ensure that the alignment posts are threaded through the rubber grommets on the speaker. 2. Route the speaker cable through the routing guides on the palm-rest and keyboard assembly. 3.

  • Page 36: Installing The Heat Sink

    Steps 1. In reverse sequential order (4>3>2>1) loosen the four captive screws that secure the heat sink to the system board. NOTE: The number of screws varies depending on the configuration ordered. 2. Remove the two screws (M2x5) that secure the heat sink to the palm-rest and keyboard assembly. 3.

  • Page 37: Power Button With Optional Fingerprint Reader

    Power button with optional fingerprint reader Removing the power-button with optional fingerprint reader Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the board. About this task The following images indicate the location of the power-button with optional fingerprint reader and provides a visual representation of the removal procedure.

  • Page 38: Installing The Power-Button With Optional Fingerprint Reader

    Installing the power-button with optional fingerprint reader Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the power-button with optional fingerprint reader and provides a visual representation of the installation procedure.

  • Page 39: Fingerprint-Reader Board

    Fingerprint-reader board Removing the fingerprint-reader board Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task NOTE: The fingeprint-reader board is an optional component and will only be installed in systems shipped with a fingerprint reader.

  • Page 40: Display Assembly

    Steps 1. Place and slide the fingerprint-reader board under the securing clip on the palm-rest and keyboard assembly. 2. Connect the fingerprint-reader board cable to the fingerprint-reader board and close the latch. 3. Connect the power-button cable to the fingerprint-reader board and close the latch. Next steps 1.
  • Page 41 Removing and installing components...

  • Page 42: Installing The Display Assembly

    Steps 1. Disconnect the display cable from the system board. 2. Remove the display cable from the routing guides on the palm-rest and keyboard assembly. 3. Open the display and place the computer with the lid open at the edge of a stable elevation with the display hanging downwards.

  • Page 43: Display Bezel

    Steps 1. Place the display assembly on the palm-rest and keyboard assembly. 2. Align the screw holes on the display hinges with the screw holes on the palm-rest and keyboard assembly. 3. Replace the 6 screws (M2.5x6) that secure the display hinges to the palm-rest and keyboard assembly. 4.

  • Page 44: Installing The Display Bezel

    Steps 1. Using a plastic scribe, pry the display bezel from the outer edge to separate it from the display assembly. 2. Lift the display bezel from the display assembly. Installing the display bezel Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the display bezel and provides a visual representation of the installation procedure.

  • Page 45: Display Panel

    Steps 1. Place the display panel and display assembly on a clean and flat surface. 2. Place the display bezel on the display assembly. 3. Align the tabs on the display bezel to the slots on the display assembly. 4. Press down on the display bezel and snap the display bezel in place. Next steps 1.
  • Page 46 5. Remove the display bezel. About this task The following images indicate the location of the display panel and provides a visual representation of the removal procedure. Removing and installing components...

  • Page 47: Installing The Display Panel

    Steps 1. Remove the six screws (M2.5x2.5) that secure the display panel to the display assembly. 2. Remove the two screws (M2x2.5) that secure the display panel to the display assembly. 3. Lift and rotate the display panel forward. NOTE: Ensure that the display panel has a smooth and clean surface to rest on to prevent damage.
  • Page 48 Removing and installing components...

  • Page 49: Camera

    Steps 1. Place the display panel and display assembly on a clean and flat surface. 2. Connect the display cable to the connector on the diplay panel and close the latch. 3. Adhere the tape that secures the display-cable connector latch to the display panel. 4.

  • Page 50: Installing The Camera

    About this task The following images indicate the location of the camera and provides a visual representation of the removal procedure. Steps 1. Using the pull tab, disconnect the camera cable from the camera. 2. Using a plastic scribe, pry the camera from the display assembly. 3.

  • Page 51: Touchpad

    Steps 1. Adhere the camera in its slot on the display assembly. 2. Connect the camera cable to the camera. Next steps 1. Install the display panel. 2. Install the display bezel. 3. Install the display assembly. 4. Install the wireless card.

  • Page 52: Installing The Touchpad

    Steps 1. Open the latch and disconnect the the touchpad cable from the touchpad. 2. Remove the three screws (M2x2) that secure the touchpad bracket to the palm-rest and keyboard assembly. 3. Lift the touchpad bracket off the touchpad. 4. Remove the two screws (M2x2) that secure the touchpad to the palm-rest and keyboard assembly. 5.

  • Page 53: System Board

    Steps 1. Place the touchpad into its slot on the palm-rest and keyboard assembly. 2. Align the screw holes on the touchpad to the screw holes on the palm-rest and keyboard assembly. 3. Turn the computer over and open the display to ensure that the touchpad is equally aligned on all sides. 4.
  • Page 54 About this task The following images indicate the connectors on the system board. 1. Power-adapter port cable 2. Speaker cable 3. Keyboard cable 4. Keyboard-backlight cable 5. Touchpad cable 6. Battery cable 7. Hard-drive cable 8. I/O-board cable 9. Fingerprint-reader cable 10.
  • Page 55 Steps 1. Disconnect the power-adapter port cable from the system board. 2. Open the latch and disconnect the fingerprint-reader cable from the system board, if applicable. 3. Open the latch and disconnect the I/O-board cable from the system board. 4. Open the latch and disconnect the hard-drive cable from the system board, if applicable. 5.

  • Page 56: Installing The System Board

    Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the connectors on the system board. 1. Power-adapter port cable 2. Speaker cable 3.
  • Page 57 Steps 1. Place the system board on the palm-rest and keyboard assembly. 2. Align the screw hole on the system board to the screw hole on the palm-rest and keyboard assembly. 3. Replace the screw (M2x4) that secures the system board to the palm-rest and keyboard assembly. 4.

  • Page 58: Power-Adapter Port

    11. Connect the power-adapter port cable to the system board. Next steps 1. Install the display assembly. 2. Install the wireless card. 3. Install the heat sink. 4. Install the memory module. 5. Install the M.2 2230 solid-state drive, if applicable. 6.

  • Page 59: Installing The Power-Adapter Port

    Steps Lift the power-adapter port from its slot on the palm-rest and keyboard assembly. Installing the power-adapter port Prerequisites If you are replacing a component, remove the existing component before performing the installation process. About this task The following images indicate the location of the power-adapter port and provides a visual representation of the installation procedure.

  • Page 60: Palm-Rest And Keyboard Assembly

    Steps Place the power-adapter port into its slot on the palm-rest and keyboard assembly. Next steps 1. Install the system board. 2. Install the display assembly. 3. Install the wireless card. 4. Install the M.2 2230 solid-state drive, if applicable. 5.

  • Page 61: Installing The Palm-Rest And Keyboard Assembly

    12. Remove the power-button with optional fingerprint reader. 13. Remove the system board. NOTE: The system board can be removed along with the heat sink. 14. Remove the power-adapter port. About this task The following images indicate the location of the palm-rest and keyboard assembly and provides a visual representation of the removal procedure.
  • Page 62 Steps Place the palm-rest and keyboard assembly on a flat and clean surface and perform the post-requisites to install the palm-rest and keyboard assembly. Next steps 1. Install the power-adapter port. 2. Install the system board. 3. Install the power-button with optional fingerprint reader.

  • Page 63: Chapter 3: Drivers And Downloads

    Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ 000123347. Drivers and downloads...

  • Page 64: Chapter 4: System Setup

    System setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.

  • Page 65: One Time Boot Menu

    One time boot menu To enter one time boot menu, turn on your computer, and then press F2 immediately. NOTE: It is recommended to shutdown the computer if it is on. The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are: ●...

  • Page 66: Advanced

    Advanced Table 5. Advanced Option Description Intel SpeedStep Enables or disables the Intel SpeedStep mode of processor. ● Enable Intel SpeedStep Default: Enabled Virtualization Enables or disables the Intel Virtualization Technology feature for the processor. Default: Enabled USB Emulation Enables or disables the USB emulation feature. This feature defines how the BIOS, in the absence of a USB-aware operating system, handles USB devices.

  • Page 67: Security

    Hard Drive to be set to Enabled. Default: Disabled. SupportAssist System Resolution Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery tool. Default: 2 SupportAssist OS Recovery Enables or disables SupportAssist OS recovery. Default: Enabled...
  • Page 68 Table 6. Security (continued) Option Description ● Confirm new password: Click OK once you set the password. NOTE: For the first time login, "Enter the old password:" field is not shown. Hence, password has to be set for the first time you login and then you can change or delete the password. System Password Enables you to set, change, or delete the System password.

  • Page 69: Boot

    Boot Table 7. Boot Option Description Boot List Option Displays the available boot options. ● Legacy ● UEFI Default: UEFI File Browser Add Boot Option Enables you to add the boot options. File Browser Del Boot Option Enables you to delete the boot options. Boot Option Priorities Displays the boot sequence.

  • Page 70: Assigning A System Setup Password

    Assigning a system setup password Prerequisites You can assign a new System or Admin Password only when the status is in Not Set. About this task To enter the system setup, press F2 immediately after a power-on or reboot. Steps 1.

  • Page 71: Clearing Bios (System Setup) And System Passwords

    Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

  • Page 72: Updating The Bios From The F12 One-Time Boot Menu

    One-Time boot menu on the computer. Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option.

  • Page 73: Chapter 5: Troubleshooting

    ● Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other computers with your computer.

  • Page 74: System Diagnostic Lights

    The following diagnostic light codes and recommended solutions are intended for Dell service technicians to troubleshoot problems. You should only perform troubleshooting and repairs as authorized or directed by the Dell technical support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Table 10. Diagnostic-light codes...

  • Page 75: Supportassist | On-Board Diagnostics

    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.

  • Page 76: Drain Residual Flea Power (Perform Hard Reset)

    5. Press and hold the power button for 20 seconds to drain the flea power. 6. Install the battery. 7. Install the base cover. 8. Connect the power adapter to your computer. 9. Turn on your computer. NOTE: For more information about performing a hard reset, see the knowledge base article 000130881 www.dell.com/support. Troubleshooting...

  • Page 77: Chapter 6: Getting Help And Contacting Dell

    Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 11. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...

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