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Inspiron 7390 2n1
Service Manual
Computer Model: Inspiron 7390 2n1
Regulatory Model: P113G
Regulatory Type: P113G001

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Table of Contents
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Summary of Contents for Dell Inspiron 7390 2n1

  • Page 1 Inspiron 7390 2n1 Service Manual Computer Model: Inspiron 7390 2n1 Regulatory Model: P113G Regulatory Type: P113G001...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2019 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 1 Before working inside your computer......................7 Before you begin ................................7 2 After working inside your computer....................... 8 3 Safety instructions............................9 Electrostatic discharge—ESD protection........................9 ESD field service kit ................................ 10 Components of an ESD field service kit........................10 ESD protection summary ............................10 Transporting sensitive components..........................
  • Page 4 13 Replacing the power-adapter port......................27 Procedure..................................27 Post-requisites..................................27 14 Removing the I/O board..........................28 Prerequisites..................................28 Procedure..................................28 15 Replacing the I/O board..........................29 Procedure..................................29 Post-requisites..................................29 16 Removing the fan............................30 Prerequisites..................................30 Procedure..................................30 17 Replacing the fan............................31 Procedure..................................31 Post-requisites..................................
  • Page 5 Prerequisites..................................41 Procedure..................................41 25 Replacing the speakers..........................42 Procedure..................................42 Post-requisites..................................42 26 Removing the heat sink..........................43 Prerequisites..................................43 Procedure..................................43 27 Replacing the heat sink..........................44 Procedure..................................44 Post-requisites..................................44 28 Removing the display assembly......................... 45 Prerequisites..................................45 Procedure..................................45 29 Replacing the display assembly........................47 Procedure..................................47 Post-requisites..................................48 30 Removing the system board........................49...
  • Page 6 36 Removing the palm-rest and antenna assembly..................65 Prerequisites..................................65 Procedure..................................65 37 Replacing the palm-rest and antenna assembly..................66 Procedure..................................66 Post-requisites................................. 66 Procedure..................................67 38 Device drivers............................68 Intel Chipset Software Installation Utility........................68 Video drivers..................................68 Intel Serial IO driver................................68 Intel Trusted Execution Engine Interface........................
  • Page 7: Before Working Inside Your Computer

    Before working inside your computer NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Before you begin Save and close all open files and exit all open applications. Shut down your computer. Click Start > Power >...
  • Page 8: After Working Inside Your Computer

    After working inside your computer CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. Replace all screws and ensure that no stray screws remain inside your computer. Connect any external devices, peripherals, or cables you removed before working on your computer. Replace any media cards, discs, or any other parts that you removed before working on your computer.
  • Page 9: Safety Instructions

    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 10: Esd Field Service Kit

    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 11: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. Lifting equipment Adhere to the following guidelines when lifting heavy weight equipment: CAUTION: Do not lift greater than 50 pounds.
  • Page 12: Recommended Tools

    Recommended tools The procedures in this document may require the following tools: • Philips screwdriver #1 • Flat-head screwdriver • Plastic scribe Recommended tools...
  • Page 13: Screw List

    Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.
  • Page 14: Removing The Base Cover

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Loosen the two captive screws that secure the base cover to the palm-rest assembly.
  • Page 15 NOTE: Disconnect the battery cable only when you continue to remove other components from your computer. Disconnect the battery cable from the system board. Removing the base cover...
  • Page 16: Replacing The Base Cover

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Connect the battery cable to the system board, if applicable.
  • Page 17 Tighten the two captive screws that secure the base cover to the palm-rest assembly. Replace the six screws (M2x4) that secure the base cover to the palm-rest assembly. Replacing the base cover...
  • Page 18: 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/...
  • Page 19 Turn the computer over, open the display, and then press and hold the power button for five seconds to ground the system board. Removing the battery...
  • Page 20 Removing the battery...
  • Page 21: Replacing The Battery

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts, place the battery on the palm-rest assembly.
  • Page 22: Removing The Wireless Card

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 23 Removing the wireless card...
  • Page 24: Replacing The Wireless Card

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure CAUTION: To avoid damage to the wireless card, do not place any cables under it.
  • Page 25: Post-Requisites

    Post-requisites Replace the base cover. Replacing the wireless card...
  • Page 26: Removing The Power-Adapter Port

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 27: Replacing The Power-Adapter Port

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the power-adapter port into the slot on the palm-rest assembly.
  • Page 28: Removing The I/O Board

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 29: Replacing The I/O Board

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Slide the I/O board into the slots on the palm-rest assembly.
  • Page 30: Removing The Fan

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 31: Replacing The Fan

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts, place the fan on the palm-rest assembly.
  • Page 32: Removing The Solid-State Drive

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
  • Page 33: Procedure To Remove M.2 2280 Solid-State Drive

    Procedure to remove M.2 2280 solid-state drive Locate the solid-state drive/Intel Optane storage module on your computer. Removing the solid-state drive...
  • Page 34 Remove the screw (M2x2) that secures the solid-state drive/Intel Optane storage module to the palm-rest assembly. Slide and remove the solid-state drive/Intel Optane storage module from the solid-state drive slot. Removing the solid-state drive...
  • Page 35: Replacing The Solid-State Drive

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
  • Page 36: Post-Requisites

    Post-requisites Replace the base cover. Replacing the solid-state drive...
  • Page 37: Removing The Coin-Cell Battery

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Removing the coin-cell battery resets the BIOS setup program’s settings to default. It is recommended that you note the BIOS setup program’s settings before removing the coin-cell battery.
  • Page 38: Replacing The Coin-Cell Battery

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Adhere the coin-cell battery to the palm-rest assembly. Connect the coin-cell battery cable to the system board.
  • Page 39: Removing The Touchpad

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 40: Replacing The Touchpad

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Slide the touchpad into the slot on the palm-rest assembly.
  • Page 41: Removing The Speakers

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 42: Replacing The Speakers

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts on the palm-rest assembly, place the speakers on the palm-rest assembly.
  • Page 43: Removing The Heat Sink

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. WARNING: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you touch it.
  • Page 44: Replacing The Heat Sink

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can damage the system board and processor.
  • Page 45: Removing The Display Assembly

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 46 Lift the display assembly off the palm-rest assembly. Removing the display assembly...
  • Page 47: Replacing The Display Assembly

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure CAUTION: Place the computer on a soft and clean surface to avoid scratching the display.
  • Page 48: Post-Requisites

    Post-requisites Replace the fan. Replace the base cover. Replacing the display assembly...
  • Page 49: Removing The System Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board.
  • Page 50 Peel the tape that secures the display cable to the system board. Open the latch and disconnect the display cable from the system board. Peel the tape that secures the display cable to the system board. Disconnect the power-adapter port cable from the system board. Peel the tape that secures the speaker cable to the connector.
  • Page 51 Remove the four screws (M2x2) that secure the system board to the palm-rest assembly. Lift the system board off the palm-rest assembly. Removing the system board...
  • Page 52: Replacing The System Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board.
  • Page 53 Connect the speaker cable to the system board. Adhere the tape that secures the speaker cable to the connector. Connect the power-adapter port cable to the system board. Adhere the tape that secures the display cable to the system board. Slide the display cable to the system board and close the latch to secure the cable.
  • Page 54: Post-Requisites

    Entering the Service Tag in the BIOS setup program Turn on or restart your computer. Press F2 when the Dell logo is displayed to enter the BIOS setup program. Navigate to the Main tab and enter the Service Tag in the Service Tag Input field.
  • Page 55: Removing The Keyboard

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 56 Remove the 29 screws (M1.2x1.8) that secures the keyboard bracket to the keyboard. NOTE: Lift the plastic sheet on the keyboard bracket to access the screws. Lift the keyboard bracket off the keyboard. Remove the 4 screws (M1.2x1.8) that secure the keyboard to the palm-rest assembly. Lift the keyboard off the palm-rest assembly.
  • Page 57 Removing the keyboard...
  • Page 58: Replacing The Keyboard

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the screw holes on the keyboard with the screw holes on the palm-rest assembly.
  • Page 59: Post-Requisites

    Replace the plastic sheet on the keyboard bracket. Adhere the tapes that secure the antenna cables to the keyboard bracket. Adhere the fingerprint-reader cable to the keyboard bracket. Post-requisites Replace the system board. Replace the power button with fingerprint reader Replacing the keyboard...
  • Page 60 Replace the board. Replace the display assembly. Replace the fan. Replace the speakers. Replace the wireless card. Replace the coin-cell battery. Replace the solid-state drive. Replace the battery. Replace the base cover. Replacing the keyboard...
  • Page 61: Removing The Power Button With Fingerprint Reader

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Applicable only for computers that are shipped with fingerprint reader.
  • Page 62 Removing the power button with fingerprint reader...
  • Page 63: Replacing The Power Button With Fingerprint Reader

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Applicable only for computers that are shipped with fingerprint reader.
  • Page 64 Replace the speakers. Replace the wireless card. Replace the coin-cell battery. Replace the solid-state drive. Replace the battery. Replace the base cover. Replacing the power button with fingerprint reader...
  • Page 65: Removing The Palm-Rest And Antenna Assembly

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover.
  • Page 66: Replacing The Palm-Rest And Antenna Assembly

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the palm rest on a flat surface. Post-requisites...
  • Page 67: Procedure

    Replace the fan. Replace the battery. Replace the base cover. Procedure Place the palm rest on a flat surface. Replacing the palm-rest and antenna assembly...
  • Page 68: Device Drivers

    Device drivers Intel Chipset Software Installation Utility In the Device Manager, check if the chipset driver is installed. Install the Intel chipset updates from www.dell.com/support. Video drivers In the Device Manager, check if the video driver is installed. Install the video driver update from www.dell.com/support.
  • Page 69: 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: •...
  • Page 70: System Setup Options

    • STXXXX Drive (if available) NOTE: XXX denotes the SATA drive number. • Optical Drive (if available) • SATA Hard Drive (if available) • Diagnostics NOTE: Choosing Diagnostics, will display the ePSA diagnostics screen. The boot sequence screen also displays the option to access the System Setup screen. System setup options NOTE: Depending on this computer and its installed devices, the items that are listed in this section may or may not be displayed.
  • Page 71 Overview 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 Channel Mode Displays single or dual channel mode. Memory Technology Displays the technology that is used for the memory. Device Information Video Controller Displays the integrate graphics information of the computer.
  • Page 72 System Configuration Enable SMART Reporting Enables or disables SMART (Self-Monitoring, Analysis, and Reporting Technology) during computer startup to report hard drive errors. Default: OFF. Enable Audio Enables or disables all integrated audio controller. Default: ON. Enable Microphone Enables or disables microphone. Default: ON.
  • Page 73 Table 6. System setup options—Video menu Video LCD Brightness Brightness on battery power Sets the screen brightness when the computer is running on battery power. Brightness on AC power Sets the screen brightness when the computer is running on AC power. EcoPower Enables or disables EcoPower which increases the battery life by reducing the screen brightness when appropriate.
  • Page 74 Security NOTE: This feature may cause compatibility issues or loss of functionality with some legacy tools and applications. Enable Strong Passwords Enables or disables strong passwords. Default: OFF. Password Configuration Control the minimum and maximum number of characters that are allowed for Admin and System passwords.
  • Page 75 Performance Default: ON. Intel TurboBoost Technology Enabled or disabled the Intel TurboBoost mode of the processor. If enabled, the Intel TurboBoost driver increases the performance of the CPU or graphics processor. Default: ON. Multi-Core Support Changes the number of CPU cores available to the operating system. The default value is set to the maximum number of cores.
  • Page 76 Table 12. System setup options—Wireless menu Wireless Wireless Switch Determines which wireless devices can be controlled by the Wireless Switch. For Windows 8 systems, this is controlled by an operating system drive directly. As a result, the setting does not affect the Wireless Switch behavior. NOTE: When both WLAN and WiGig are present, enable/disable controls are tied together.
  • Page 77 Table 14. System setup options—Virtualization menu Virtualization Intel Virtualization Technology Enables the computer to run a virtual machine monitor (VMM). Default: ON. 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.
  • Page 78: System And Admin Password

    Dell Auto operating system Recovery Controls the automatic boot flow for SupportAssist System Resolution Console and Threshold for Dell operating system Recovery tool. Default: 2. SupportAssist operating system Recovery Enables or disables the boot flow for SupportAssist operating system Recovery tool in the even of certain system errors.
  • Page 79: Deleting Or Changing An Existing System/Admin Password

    Clearing BIOS (System Setup) and System passwords 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 80: Troubleshooting

    Running the ePSA diagnostics Turn on your computer. As the computer boots, press the F12 key as the Dell logo appears. On the boot menu screen, select the Diagnostics option. Click the arrow at the bottom left corner.
  • Page 81: Recovering The Operating System

    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 82: Flashing Bios (Usb Key)

    For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell.com/ support. Flashing BIOS (USB key) Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file.
  • Page 83 Press and hold the power button for 15 seconds to drain the flea power. Connect the power adapter to your computer. Turn on your computer. Troubleshooting...

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