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Dell P116G Service Manual

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Inspiron 5490
Service Manual
Regulatory Model: P116G
Regulatory Type: P116G001
August 2021
Rev. A01

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Summary of Contents for Dell P116G

  • Page 1 Inspiron 5490 Service Manual Regulatory Model: P116G Regulatory Type: P116G001 August 2021 Rev. A01...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2019-2021 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

    Contents Chapter 1: Working inside your computer..................6 Before working inside your computer..........................6 Before you begin ................................6 Safety instructions................................6 Electrostatic discharge—ESD protection........................7 ESD field service kit ................................7 Transporting sensitive components..........................8 After working inside your computer..........................8 Chapter 2: Removing and installing components................9 Recommended tools................................
  • Page 4 Updating the BIOS from the F12 One-Time boot menu..................68 Chapter 5: Troubleshooting......................70 Handling swollen Lithium-ion batteries........................70 Locate the Service Tag or Express Service Code of your Dell computer ..........70 System diagnostic lights..............................71 SupportAssist diagnostics............................... 72 Built-in self-test (BIST)..............................72...
  • Page 5 M-BIST................................... 72 LCD Built-in Self Test (BIST)........................... 72 Recovering the operating system..........................73 WiFi power cycle................................73 Flea power release................................74 Real Time Clock—RTC reset............................74 Chapter 6: Getting help and contacting Dell................75 Contents...

  • 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 #1 ● Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and...

  • Page 10: Base Cover

    Table 1. Screw list (continued) Component Secured to Screw type Quantity Screw image Touchpad bracket Palm-rest and keyboard M2x2 assembly Touchpad Palm-rest and keyboard M2x2 assembly Wireless-card bracket System board M2x3 Power-button board/ Palm-rest and keyboard M2x2 Fingerprint-reader board assembly bracket Power-button board/ Palm-rest and keyboard...
  • Page 11 Removing and installing components...

  • Page 12: Installing The Base Cover

    Steps 1. Loosen the two captive screws and remove the seven screws (M2x5) that secure the base cover to the palm-rest and keyboard assembly. 2. Pry the base cover starting from the right hinge and work your way around. 3. Lift the base cover off the palm-rest and keyboard assembly. 4.

  • Page 13: Battery

    Steps 1. Connect the battery cable to the system board, if applicable. 2. Adhere the tape that secures the battery connector to the system board. 3. Place the base cover on the palm-rest and keyboard assembly, and snap the base cover into place. 4.

  • Page 14: Removing The 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 15: Installing The Battery

    Steps 1. Peel off the tape that secures the battery cable to the system board. 2. Disconnect the battery cable from the system board. 3. Remove the two screws (M2x3) that secure the battery to the palm-rest and keyboard assembly. 4.
  • Page 16 Steps 1. Align the four tabs on the battery into the slots on the palm-rest and keyboard assembly and insert the battery into place. 2. Align the screw holes on the battery with the screw holes on the palm-rest and keyboard assembly and place the battery on the palm-rest and keyboard assembly.

  • Page 17: Memory Module

    Memory module Removing the memory module Prerequisites NOTE: The primary memory module is integrated into the system board. This procedure is for removing the secondary memory module. 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

  • Page 18: Installing The Memory Module

    2. With the memory module visible, use your fingertips to spread apart the securing clips on the memory-module slot until the memory module pops up. 3. Slide and remove the memory module from the memory-module slot. Installing the memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 19: Solid-State Drive

    3. Cover the memory module with the Mylar. Next steps 1. Install the battery. 2. Install the base cover. 3. Follow the procedure in After working inside your computer. Solid-state drive Removing the solid-state drive Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 20: Moving The Solid-State Drive Screw Mount

    M.2 2280 solid-state drive Steps 1. Remove the screw (M2x3) that secures the solid-state drive to the system board. 2. Slide and remove the solid-state drive from the solid-state drive slot on the system board. Moving the solid-state drive screw mount Prerequisites 1.

  • Page 21: Installing The Solid-State Drive

    About this task The following image indicates the location of the solid-state drive screw mount and provides a visual representation of the procedure to move the screw mount to another location that accommodates the form factor. Steps 1. Slide the screw mount out of the screw-mount slot on the palm-rest and keyboard assembly. 2.
  • Page 22 M.2 2242 solid-state drive M.2 2280 solid-state drive Removing and installing components...

  • Page 23: Wireless Card

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive slot. 2. Slide the solid-state drive into the solid-state slot on the system board. 3. Replace the screw (M2x3) that secures the solid-state drive to the system board. Next steps 1.

  • Page 24: Installing The Wireless Card

    Steps 1. Remove the screw (M2x3) that secures the wireless-card bracket to the wireless card. 2. Remove the wireless-card bracket off the wireless card. 3. Disconnect the antenna cables from the wireless card. 4. 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.
  • Page 25 Steps 1. Slide the wireless card at an angle into the wireless-card slot. 2. 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)

  • Page 26: 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. 3. Remove the battery. About this task The following image indicates the location of the I/O board and provides a visual representation of the removal procedure. Steps 1.

  • Page 27: Heat Sink

    Steps 1. Using the alignment posts, place the I/O board on the palm-rest and keyboard assembly. 2. Route the I/O-board cable through the routing guides on the fan. 3. Replace the two screws (M2x3) that secure the I/O board to the palm-rest and keyboard assembly. 4.

  • Page 28: Installing The Heat Sink (Integrated Graphics)

    Steps 1. In reverse-sequential order (as indicated on the heat sink), loosen the four captive screws that secure the heat sink to the system board. 2. Lift the heat sink off the system board. Installing the heat sink (integrated graphics) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 29: Removing The Heat Sink (Discrete Graphics)

    Steps 1. Align the screw holes on the heat sink with the screw holes on the system board. 2. In sequential order (indicated on the heat sink), tighten the four captive screws that secure the heat sink to the system board.

  • Page 30: Installing The Heat Sink (Discrete Graphics)

    Steps 1. In reverse-sequential order (as indicated on the heat sink), loosen the seven captive screws that secure the heat sink to the system board. 2. Lift the heat sink off the system board. Installing the heat sink (discrete graphics) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 31: Touchpad

    Steps 1. Align the screw holes on the heat sink with the screw holes on the system board. 2. In sequential order (indicated on the heat sink), tighten the seven captive screws that secure the heat sink to the system board.

  • Page 32: Installing The Touchpad

    Steps 1. Peel the tapes that secure the antenna cables to the palm-rest and keyboard assembly. 2. Open the latch and disconnect the touchpad cable from the system board. 3. Gently slide the touchpad-cable connector under the antenna cables so that the touchpad cable is over the antenna cables. 4.

  • Page 33: Fan

    Steps 1. Align and place the touchpad into the slot on the palm-rest and keyboard assembly. 2. Replace the four screws that (M2x2) secure the touchpad to the palm-rest and keyboard assembly. 3. Align and place the touchpad bracket into the slot on the palm-rest and keyboard assembly. 4.

  • Page 34: Installing The Fan

    Steps 1. Peel the tape off the I/O-board cable connector. 2. Lift the latch and disconnect the I/O-board cable from the I/O board. 3. Remove the I/O-board cable from the routing guides on the fan. 4. Remove the two screws (M2x3) that secure the fan to the system board. 5.

  • Page 35: Display Assembly

    Steps 1. Connect the fan cable to the system board. 2. Align the screw holes on the fan with the screw holes on the palm-rest and keyboard assembly. 3. Replace the two screws (M2x3) that secure the fan to the palm-rest and keyboard assembly. 4.
  • Page 36 Steps 1. Peel the tape that secures the display-cable connector to the system board. 2. Open the latch and disconnect the display cable from the system board. 3. Remove the four screws (M2.5x5) that secure the left and the right display hinges to the palm-rest and keyboard assembly. Removing and installing components...

  • Page 37: Installing The Display Assembly

    4. Open the display hinges at an angle of 90 degrees. 5. Gently slide and lift the palm-rest and keyboard assembly off the display assembly. Installing the display assembly 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 display assembly and provides a visual representation of the installation procedure.
  • Page 38 Removing and installing components...
  • Page 39 Removing and installing components...

  • Page 40: Coin-Cell Battery

    Steps 1. Place the display assembly on a clean and flat surface. 2. Align and place the palm-rest and keyboard assembly on the display assembly. 3. Using the alignment posts, close the left and the right display hinges. 4. Replace the four screws (M2.5x5) that secure the left and the right display hinges to the palm-rest and keyboard assembly. 5.

  • Page 41: Installing The Coin-Cell Battery

    3. Note the speaker-cable routing and remove the speaker cable from the routing guides. 4. Disconnect the coin-cell battery cable from the system board. 5. Remove the coin-cell battery cable from the routing guides. NOTE: Depending on the configuration ordered, you may need to peel-off additional tape that adheres the coin-cell battery cable to the palm-rest and keyboard assembly.

  • Page 42: Speakers

    2. Install the wireless card. 3. Install the battery. 4. Install the base cover. 5. Follow the procedure in After working inside your computer. Speakers Removing the speakers Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

  • Page 43: Power-Adapter Port

    About this task The following image indicates the location of the speakers and provides a visual representation of the installation procedure. Steps 1. Using the alignment posts, place the speakers on the palm-rest and keyboard assembly. 2. Route the speaker cables through the routing guides on the palm-rest and keyboard assembly. 3.

  • Page 44: Installing The Power-Adapter Port

    Steps 1. Disconnect the power-adapter port cable from the system board. 2. Remove the screw (M2x3) that secures the power-adapter port to the palm-rest and keyboard assembly. 3. Lift the power-adapter port, along with its cable, off 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 procedure.

  • Page 45: Power Button

    Steps 1. Place the power-adapter port into the slot on the palm-rest and keyboard assembly. 2. Replace the screw (M2x3) that secures the power-adapter port to the palm-rest and keyboard assembly. 3. Connect the power-adapter cable to the connector on the system board. Next steps 1.

  • Page 46: Installing The Power-Button Board

    Steps 1. Remove the two screws (M2.5x5) that secure the right display hinge to the palm-rest and keyboard assembly. 2. Lift the right display hinge. 3. Lift the latch and disconnect the power-button cable from the system board. 4. Peel the adhesive tape above the power-button board. 5.
  • Page 47 Steps 1. Align and place the power-button board into the slot on the palm-rest and keyboard assembly. 2. Replace the two screws (M2x2) and the two screws (M2x3) that secure the power-button board to the palm-rest and keyboard assembly. 3. Adhere the adhesive tape above the power-button board. 4.

  • Page 48: Power Button With Fingerprint Reader (Optional)

    Power button with fingerprint reader (optional) Removing the power button with fingerprint reader (optional) Prerequisites NOTE: This procedure is only applicable to computers shipped with a power button with fingerprint reader. 1. Follow the procedure in Before working inside your computer.

  • Page 49: Installing The Power Button With Fingerprint Reader (Optional)

    Steps 1. Remove the two screws (M2.5x5) that secure the right display hinge to the palm-rest and keyboard assembly. 2. Lift the right display hinge. 3. Open the latch and disconnect the power-button cable from the connector on the system board. 4.
  • Page 50 Steps 1. Align and place the power button with fingerprint reader into the slot on the palm-rest and keyboard assembly. 2. Replace the two screws (M2x3) that secure the power button with fingerprint reader to the palm-rest and keyboard assembly. 3.

  • Page 51: System Board

    System board Removing the system board Prerequisites NOTE: The system board is removed and installed with the heat sink attached, when replacing the palm-rest and keyboard assembly. This simplifies the procedure and avoids breaking the thermal bond between system board and the heat sink. 1.
  • Page 52 Steps 1. Open the latch and disconnect the I/O-board cable from the system board. 2. Open the latch and disconnect the power-adapter port cable from the system board. 3. Disconnect the coin-cell battery cable and the speaker cable from the system board. Removing and installing components...

  • Page 53: Installing The System Board

    4. Open the respective latches and disconnect the touchpad cable, the keyboard-backlight cable, and the keyboard cable from their connectors on the system board. 5. Remove the five screws (M2x2) and the two screws (M2x3) that secure the system board to the palm-rest and keyboard assembly.

  • Page 54: Palm-Rest And Keyboard Assembly

    3. Connect the touchpad cable, the keyboard-backlight cable, and the keyboard cable to their respective connectors on the system board and close the respective latches. 4. Connect the coin-cell battery cable and the speaker cable to the connectors on the system board. 5.

  • Page 55: Installing The Palm-Rest And Keyboard Assembly

    Installing the palm-rest and keyboard assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task Place the palm-rest and keyboard assembly on a flat surface. Next steps 1. Install the system board.

  • Page 56: 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 57: Chapter 4: System Setup

    Boot Sequence allows you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical 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...

  • Page 58: One Time Boot Menu

    ● 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: ● Removable Drive (if available) ● STXXXX Drive (if available) NOTE: XXX denotes the SATA drive number.
  • Page 59 Table 4. System setup options—System information menu (continued) Overview AC Adapter Displays whether an AC adapter is installed. PROCESSOR Processor Type Displays the processor type. Maximum Clock Speed Displays the maximum processor clock speed. Minimum Clock Speed Displays the minimum processor clock speed. Current Clock Speed Displays the current processor clock speed.
  • Page 60 Table 5. System setup options—Boot options menu (continued) Boot Options Default: OFF UEFI Boot Path Security Enables or disables the system to prompt the user to enter the Admin password when booting a UEFI boot path from the F12 boot menu. Default: Always Except Internal HDD BIOS Setup Advanced Mode Enables or disables advanced BIOS settings.
  • Page 61 Table 6. System setup options—System Configuration menu (continued) System Configuration Default: 10 seconds Keyboard Backlight Timeout on Battery Configures the timeout value for the keyboard when the computer is running on battery. The keyboard backlight timeout value is only effect when the backlight is enabled.
  • Page 62 Table 8. System setup options—Security menu (continued) Security Default: OFF Clear Enables or disables the computer to clear the PTT owner information, and returns the PTT to the default state. Default: OFF Intel SGX Enables or disables the Intel Software Guard Extensions (SGX) to provide a secured environment for running code/storing sensitive information.
  • Page 63 Enable USB Wake Support Enables the USB devices to wake the computer from Standby mode. Default: OFF Wake on Dell USB-C Dock Enables the computer to wake from Standby when it is connected to a Dell USB-C dock. Default: ON Auto On Time Enables the computer to automatically power on for defined days and times.
  • Page 64 Table 12. System setup options—Power Management menu (continued) Power Management Default: OFF Power On Lid Open Enables the computer to power up from the off state whenever the lid is opened. Default: ON Table 13. System setup options—Wireless menu Wireless Wireless Device Enable Enables or disables internal WLAN/Bluetooth devices.
  • Page 65 Table 15. System setup options—Virtualization menu (continued) Virtualization VT for Direct I/O Enables the computer to perform Virtualization Technology for Direct I/O (VT- d). VT-d is an Intel method that provides virtualization for memory map I/O. Default: ON Table 16. System setup options—Maintenance menu Maintenance Asset Tag Asset Tag...

  • Page 66: System And Setup Password

    SupportAssist Dell Auto operating system Recovery Controls the automatic boot flow for SupportAssist System Resolution Console Threshold and for Dell operating system Recovery tool. Default: 2 SupportAssist OS Recovery Enables or disables the boot flow for SupportAssist operating system Recovery tool in the even of certain system errors.

  • Page 67: Deleting Or Changing An Existing System Setup Password

    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 68: Updating The Bios

    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 69 ● USB drive formatted to the FAT32 file system (key does not have to be bootable) ● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive ● AC power adapter that is connected to the computer ●...

  • Page 70: 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 71: System Diagnostic Lights

    System diagnostic lights Battery-status light Indicates the power and battery-charge status. Solid white — Power adapter is connected and the battery has more than 5 percent charge. Amber — Computer is running on battery and the battery has less than 5 percent charge. ●...

  • Page 72: Supportassist Diagnostics

    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.

  • Page 73: Recovering 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.

  • Page 74: Flea Power Release

    Real Time Clock—RTC reset The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Latitude and Precision systems from No POST/No Boot/No Power situations. You can initiate the RTC reset on the system from a power-off state only if it is connected to AC power.

  • Page 75: 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 22. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com Tips Dell Help & Support app NOTE: Availability varies by country.
  • Page 76 NOTE: If you do not have an active internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Getting help and contacting Dell...

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