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Dell Inspiron 3050 Service Manual
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Dell Inspiron 3050 Service Manual

3000 series inspiron micro desktop
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Inspiron Micro Desktop
3000 Series
Service Manual
Computer Model: Inspiron 3050
Regulatory Model: D12U
Regulatory Type: D12U001

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Summary of Contents for Dell Inspiron 3050

  • Page 1 Inspiron Micro Desktop 3000 Series Service Manual Computer Model: Inspiron 3050 Regulatory Model: D12U Regulatory Type: D12U001...
  • Page 2 WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Copyright © 2015 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. Dell and the Dell logo are trademarks ™...

  • Page 3: Table Of Contents

    Contents Before working inside your computer........7 ....................7 Before you begin ....................8 Safety instructions ..................9 Recommended tools After working inside your computer........10 Technical overview..............11 ................11 Inside view of your computer ............12 System-board components (top view) .............13 System-board components (bottom view) Removing the base cover............14 ......................14 Procedure...
  • Page 4 Replacing the processor fan........... 26 ......................26 Procedure ....................26 Post-requisites Removing the processor heat-sink........27 .....................27 Prerequisites ......................27 Procedure Replacing the processor heat-sink........29 ......................29 Procedure ....................29 Post-requisites Removing the wireless card............ 30 ....................30 Prerequisites ......................31 Procedure Replacing the wireless card.............33 ......................33...
  • Page 5 Replacing the solid-state drive..........43 ......................43 Procedure ....................43 Post-requisites Removing the hard drive............44 ....................44 Prerequisites ......................45 Procedure Replacing the hard drive............48 ......................48 Procedure ....................48 Post-requisites Removing the system board........... 49 ....................49 Prerequisites ......................49 Procedure Replacing the system board............
  • Page 6 ................... 59 Post-requisites .................. 59 Clearing CMOS Settings ....................59 Prerequisites ....................60 Procedure ................... 62 Post-requisites Flashing the BIOS..............63 Getting help and contacting Dell...........64 ..................64 Self-help resources ....................64 Contacting Dell...

  • Page 7: Before Working Inside Your Computer

    Before working inside your computer CAUTION: To avoid damaging the components and cards, handle them by their edges and avoid touching pins and contacts. 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.

  • Page 8: Safety Instructions

    CAUTION: 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 shipped with the product or at dell.com/regulatory_compliance.

  • Page 9: Recommended Tools

    CAUTION: Press and eject any installed card from the media-card reader. Recommended tools The procedures in this document may require the following tools: • Philips screwdriver • Plastic scribe...

  • Page 10: 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, and cables you removed before working on your computer.

  • Page 11: Technical Overview

    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 dell.com/regulatory_compliance. Inside view of your computer processor heat-sink processor fan system board...

  • Page 12: System-Board Components (Top View)

    memory module brackets (2) System-board components (top view) memory-module slot processor-fan cable connector (CPU FAN) processor...

  • Page 13: System-Board Components (Bottom View)

    System-board components (bottom view) solid-state drive slot (NGF_SSD) 2 CMOS and password reset jumper (CMOS+PW) wireless-card slot (NGF_WLAN) coin-cell battery hard-drive cable connector coin-cell battery cable (SATA_HDD) connector (BATTERY)

  • Page 14: Removing The Base Cover

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. Procedure CAUTION: Place the computer on a soft and clean surface to avoid scratching the top cover.
  • Page 15 Remove the screws that secure the base cover to the top-cover assembly. screws (4) base cover Hold the base cover and gently loosen it to release the tabs that secure the base cover to the top-cover assembly.
  • Page 16 Lift the base cover off the top-cover assembly. base cover top-cover assembly tabs (4)

  • Page 17: Replacing The Base Cover

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. Procedure Align the tabs on the top-cover assembly with the slots on the base cover and snap the top-cover assembly in place.

  • Page 18: Removing The Memory Module

    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 dell.com/regulatory_compliance. Prerequisites Remove the base cover. Procedure Use your fingertips to carefully spread apart the securing clips on each end of the memory-module slot until the memory module pops up.
  • Page 19 Slide and remove the memory module from the memory-module slot. memory-module slot securing clips (2) memory module...

  • Page 20: Replacing The Memory Module

    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 dell.com/regulatory_compliance. Procedure Align the notch on the memory module with the tab on the memory- module slot.
  • Page 21 Slide the memory module firmly into the slot at an angle and gently press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it. notch memory-module slot memory module...

  • Page 22: Post-Requisites

    Post-requisites Replace the base cover.

  • Page 23: Removing The Processor 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 dell.com/regulatory_compliance. Prerequisites Remove the base cover. Procedure...
  • Page 24 Lift the brackets off the system board. screws (4) brackets (2) Remove the screws that secure the processor fan to the system board.
  • Page 25 Disconnect the processor-fan cable from the system board and lift the processor fan off the system board. screws (2) processor fan processor fan-cable...

  • Page 26: Replacing The Processor Fan

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. Procedure Connect the processor-fan cable to the system board. Align the screw holes on the processor fan with the screw holes on the system board.

  • Page 27: Removing The Processor Heat-Sink

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. CAUTION: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.
  • Page 28 Lift the processor heat-sink off system board. processor heat-sink captive screws (4)

  • Page 29: Replacing The Processor Heat-Sink

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. CAUTION: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The oils in your skin can reduce the heat transfer capability of the thermal grease.

  • Page 30: 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 dell.com/regulatory_compliance. Prerequisites Remove the base cover. Follow the procedure from step 1 to step 2 in "Removing the processor...

  • Page 31: Procedure

    Procedure Carefully lift the system-board assembly and turn it over. top-cover assembly system-board assembly alignment posts (4) Remove the screw that secures the wireless-card bracket to the wireless card. Slide and lift the wireless-card bracket off the wireless card. Disconnect the antenna cables from the wireless card.
  • Page 32 Slide and remove the wireless card from the wireless-card slot. wireless-card bracket antenna cables (2) screw wireless card wireless-card slot...

  • Page 33: 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 dell.com/regulatory_compliance. Procedure CAUTION: To avoid damage to the wireless card, do not place any cables under it.
  • Page 34 Press the other end of the wireless card down and 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: Connectors on the wireless card Antenna-cable sticker color Main (white triangle) White Auxiliary (black triangle)

  • Page 35: Post-Requisites

    Align the screw hole on the wireless-card bracket with the screw hole on the wireless card and replace the screw that secures the wireless-card bracket to the wireless card. wireless-card bracket screw Turn the system-board assembly over and using the alignment posts, snap the system-board assembly into place.

  • Page 36: Removing The Coin-Cell Battery

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at 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 37: Procedure

    Procedure Carefully lift the system-board assembly and turn it over. top-cover assembly system-board assembly alignment posts (4) Disconnect the coin-cell battery cable from the system board.
  • Page 38 Peel off the coin-cell battery from the system board. coin-cell battery connector coin-cell battery cable coin-cell battery...

  • Page 39: Replacing The Coin-Cell Battery

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. Procedure Adhere the coin-cell battery to the system board. Connect the coin-cell battery cable to the system board.

  • Page 40: Removing The Solid-State Drive

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. CAUTION: Solid-state drives are fragile. Exercise care when handling the hard drive. CAUTION: To avoid data loss, do not remove the solid-state drive while the computer is in sleep or on state.

  • Page 41: Procedure

    Procedure Carefully lift the system-board assembly and turn it over. top-cover assembly system-board assembly alignment posts (4) Using a plastic scribe, push the securing tab to release the solid-state drive.
  • Page 42 Slide and lift the solid-state drive off the system-board assembly. securing tab plastic scribe solid-state drive solid-state drive slot...

  • Page 43: 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 dell.com/regulatory_compliance. CAUTION: Solid-state drives are fragile. Exercise care when handling the hard drive. Procedure Slide the solid-state drive firmly into the slot at an angle and gently press the solid-state drive down until it snaps into position.

  • Page 44: Removing The Hard Drive

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. CAUTION: To avoid data loss, do not remove the hard drive while the computer is in sleep or on state.

  • Page 45: Procedure

    Procedure Carefully lift the system-board assembly and turn it over. top-cover assembly system-board assembly alignment posts (4) Using your fingertips, gently release the securing tabs on the hard-drive cable. Disconnect the hard-drive cable from the system board. Remove the screws that secure the hard drive to the hard-drive bay.
  • Page 46 Slide and lift the hard-drive assembly off the hard-drive bay. securing tabs (2) hard-drive cable hard-drive assembly hard-drive bay screws (4)
  • Page 47 Disconnect the interposer from the hard drive. interposer hard drive...

  • Page 48: Replacing The Hard 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 dell.com/regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. Procedure Connect the interposer to the hard drive.

  • Page 49: Removing The System Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at 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 system board...

  • Page 51: Replacing The System Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at 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 52: Removing The Top-Cover 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 dell.com/regulatory_compliance. Prerequisites Remove the base cover. Follow the procedure from step 1 to step 2 in "Removing the processor...
  • Page 53 Lift the top-cover assembly and keep it aside. top-cover assembly antenna cables (2) wireless-card bracket screw top-cover assembly...

  • Page 54: Replacing The Top-Cover Assembly

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance. Procedure Press the other end of the wireless card down and connect the antenna cables to the wireless card.

  • Page 55: Bios Setup Program

    Entering BIOS setup program Turn on (or restart) your computer. During POST, when the DELL logo is displayed, watch for the F2 prompt to appear and then press F2 immediately. NOTE: The F2 prompt indicates that the keyboard has initialized.

  • Page 56: Clearing Forgotten Passwords

    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 dell.com/regulatory_compliance. Prerequisites Remove the base cover. Follow the procedure from step 1 to step 2 in "Removing the processor...

  • Page 57: Procedure

    Procedure Carefully lift the system-board assembly and turn it over. top-cover assembly system-board assembly alignment posts (4) Locate the CMOS and password reset jumper (CMOS+PW) on the system board. For more information on the location of CMOS and password reset jumper, see “System-board components”.
  • Page 58 Remove the jumper plug and replace it on the password jumper-pins. jumper plug CMOS jumper-pins password jumper-pins Follow the procedure from step 4 to step 5 in “Replacing the processor fan”. Replace the base cover. Turn on your computer and wait till the operating system is completely loaded.

  • Page 59: Post-Requisites

    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 dell.com/regulatory_compliance. Prerequisites Remove the base cover. Follow the procedure from step 1 to step 2 in "Removing the processor...

  • Page 60: Procedure

    Procedure Carefully lift the system-board assembly and turn it over. top-cover assembly system-board assembly alignment posts (4) Locate the CMOS and password reset jumper (CMOS+PW) on the system board. NOTE: For more information on the location of CMOS and password reset jumper, see “System-board components”.
  • Page 61 Remove the jumper plug and replace it on the CMOS jumper-pins. jumper plug CMOS jumper-pins password jumper-pins Follow the procedure from step 4 to step 5 in “Replacing the processor fan”. Replace the base cover. Turn on your computer and wait till the operating system is completely loaded.

  • Page 62: Post-Requisites

    Post-requisites Follow the procedure from step 4 to step 5 in "Replacing the processor fan”. Replace the base cover.

  • Page 63: Flashing The Bios

    You may need to flash (update) the BIOS when an update is available or when you replace the system board. To flash the BIOS: Turn on the computer. Go to dell.com/support. Click Product Support, enter the Service Tag of your laptop and click Submit.

  • Page 64: 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 online self-help resources: Self-Help Information Self-Help Options Windows 8.1—Open the Search Accessing Windows Help charm, type Help and Support in the search box, and press Enter.
  • Page 65 NOTE: Availability varies by country and product, and some services may not be available in your country. 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.

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