Inspiron 20 Service Manual Computer Model: Inspiron 20 Model 3043 Regulatory Model: W13B Regulatory Type: W13B001
Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Copyright © 2014 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws.
Contents Before Working Inside Your Computer...................................8 Before You Begin............................................................................................... 8 Safety Instructions............................................................................................. 8 Recommended Tools........................................................................................ 9 After Working Inside Your Computer.................................... 11 Technical Overview.
Replacing the Battery............................................................... 26 Procedure........................................................................................................ 26 Post-requisites........................................................................................... 27 Removing the Control-Buttons Board..................................28 Prerequisites....................................................................................................
Replacing the Speakers............................................................ 39 Procedure ....................................................................................................... 39 Post-requisites................................................................................................. 39 Removing the System Board...................................................40 Prerequisites....................................................................................................
Replacing the Heat Sink........................................................... 56 Procedure........................................................................................................ 56 Post-requisites ................................................................................................ 56 Removing the Antenna............................................................. 57 Prerequisites..............................................................................................
Replacing the Display Bezel.................................................... 73 Procedure.........................................................................................................73 Post-requisites................................................................................................. 73 Flashing the BIOS...................................................................... 74 Getting Help and Contacting Dell..........................................75 Self-Help Resources........
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 1 Save and close all open files and exit all open applications. 2 Shut down your computer. – Windows 8.1: On the Start screen, click or tap the power icon Shut down.
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at dell.com/ regulatory_compliance. WARNING: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the computer, replace all covers, panels, and screws before connecting to the power source.
• Philips screwdriver • Plastic scribe 10
After Working Inside Your Computer CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. 1 Replace all screws and make sure that no stray screws remain inside your computer. 2 Connect any external devices, peripherals, and cables you removed before working on your computer. 3 Replace any media cards, discs, and any other part(s) that you removed before working on your computer. 4 Connect your computer and all attached devices to their electrical outlets.
Technical Overview WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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.
System Board Components Back View 1 memory-module slot (DDR3L) 2 hard-drive cable connector (HDD) 3 wireless-card slot (WLAN) 4 display-backlight cable connector 5 display-cable connector (LVDS) 6 speaker-cable connector (SPK) 7 power-status light board cable connector (LED) 13
Front View 1 camera and control-buttons board cable connector 3 coin-cell battery 14 2 coin-cell battery cable connector
Removing the Hard Drive WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive.
4 Lift and slide the hard-drive assembly out of the slot on the back cover. 1 hard-drive assembly 2 screws (4) 3 pull tab 4 hard-drive cable 5 interposer board 5 Turn the hard-drive assembly over. 6 Peel off the tape that secures the interposer board to the hard-drive assembly.
7 Turn the hard-drive assembly over. 8 Pull the interposer board to disconnect it from the hard-drive assembly. 9 Remove the screws that secure the hard-drive bracket to the hard drive. 10 Lift the hard-drive bracket off the hard drive.
Replacing the Hard Drive WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive.
Removing the Back Cover WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the procedure from step 1 to step 5 in “Removing the Hard Drive”.
2 Using a plastic scribe, pry the back cover from the display bezel starting from the notch at the bottom of the back cover. CAUTION: To avoid damaging the rubber foot, do not use the plastic scribe under the rubber-foot area.
3 Carefully lift the back cover and turn it over. 1 4 2 display bezel Disconnect the battery cable from the system board. 1 5 back cover system board 2 battery cable Carefully turn the back cover over and align the tabs on the back cover with the slots on the display bezel.
6 Press and hold the power button for 5 seconds to ground the system board. 1 7 2 back cover Carefully lift the back cover and turn it over.
8 Remove the hard-drive cable from the slot on the back cover. 1 9 back cover 2 hard-drive cable Remove the control-buttons board. 10 Place the back cover in a secure location.
Replacing the Back Cover WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Replace the control-buttons board. 2 Slide the hard-drive cable into the slot on the back cover.
Removing the Battery WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the instructions from step 1 to step 5 in “Removing the Back Cover”.
Replacing the Battery WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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.
Post-requisites Follow the instructions from step 4 to step 6 in “Replacing the Back Cover”.
Removing the ControlButtons Board WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the instructions from step 1 to step 7 in “Removing the Back Cover”.
4 Lift the control-buttons board off the back cover.
Replacing the Control-Buttons Board WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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.
Removing the Wireless Card WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the instructions from step 1 to step 8 in “Removing the Back Cover”.
3 32 Remove the wireless card from the wireless-card slot.
Replacing the Wireless Card WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure CAUTION: To avoid damaging the wireless card, do not place any cables under it.
Removing the Power-Status Light Board WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the instructions from step 1 to step 7 in “Removing the Back Cover”.
4 Lift the power status-light board off the display bezel.
Replacing the Power-Status Light Board WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Slide the power status-light board into the alignment post on the display bezel.
Removing the Speakers WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the instructions from step 1 to step 7 in “Removing the Back Cover”.
3 Lift the tape that secures the speaker cable to the display bezel. 4 Remove the screws that secure the speakers to the display bezel. 5 Lift the speakers along with the cable off the display bezel.
Replacing the Speakers WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Align the screw holes on the speakers with the screw holes on the display bezel.
Removing the System Board WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. NOTE: Your computer’s Service Tag is stored in the system board.
3 Using the pull tab, disconnect the hard-drive cable and display cable from the system board. For more information, see “System Board Components”. 1 hard-drive cable 2 display-backlight cable 3 display cable 4 speaker cable 5 power-status light cable 6 connector latch 4 Remove the screws that secure the system-board bracket to the display bezel. 5 Remove the tape that secures the system board bracket to the display panel.
6 7 42 Carefully lift the system-board bracket and turn it over. 1 tape (2) 3 system-board bracket 2 screws (3) Note the display-board cable routing and disconnect the display-board cable on the display board.
8 9 Lift the tape and disconnect the camera and control-buttons board cable from the system board. 1 camera and controlbuttons board cable 2 system board 3 system-board bracket 4 display-board cable Remove the screws that secure the system-board to the system-board bracket.
10 Lift the system board at an angle and release the ports on the system board from the slots on the system-board bracket. 1 coin-cell battery 2 coin-cell battery cable 3 screws (6) 4 system board 5 system-board bracket 11 Turn the system board over and place it on a clean and flat surface. 12 Remove the memory module. 13 Remove the heat sink.
Replacing the System Board WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. NOTE: Your computer’s Service Tag is stored in the system board.
13 Connect the hard-drive cable and display cable to the system board. For more information, see “System Board Components”. 14 Connect the power-status light cable to the system board. For more information, see “System Board Components”. 15 Connect the speaker cable and display-backlight cable to the system board. For more information, see “System Board Components”. Post-requisites 1 Replace the wireless card. 2 Follow the instructions from step 3 to step 6 in “Replacing the Back Cover”.
Removing the Coin-Cell Battery WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. CAUTION: Removing the coin-cell battery resets the BIOS settings to default.
2 48 Pry the coin-cell battery off the system board.
Replacing the Coin-Cell Battery WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Adhere the coin-cell battery to the system board.
Removing the Memory Module WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 1 Follow the instructions from step 1 to step 7 in “Removing the Back Cover”.
2 Remove the memory module from the memory-module slot on the system board.
Replacing the Memory Module WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Align the notch on the memory module with the tab on the memorymodule slot.
Post-requisites 1 Follow the instructions from step 3 to step 15 in “Replacing the System Board”. 2 Replace the wireless card. 3 Follow the instructions from step 3 to step 6 in “Replacing the Back Cover”.
Removing the Heat Sink WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. WARNING: The heat sink may become hot during normal operation.
2 Lift the heat sink off the system board.
Replacing the Heat Sink WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. CAUTION: Incorrect alignment of the heat sink can cause damage to the system board and processor.
Removing the Antenna WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 1 Follow the instructions from step 1 to step 8 in “Removing the Back Cover”.
3 58 Peel the tape and lift the aluminium foil that secures the antenna cable and camera and control-buttons board cable to the display panel.
4 Lift the connector latches and disconnect the flex cables from the display board. 1 flex cables (3) 3 display board 2 connector latches (3) 5 Note the antenna-cables routing and remove the antenna cables from the routing guides on the display bezel. 6 Peel the aluminium foil tapes that secure the antenna modules to the display bezel.
7 60 Lift the antenna modules off the display bezel.
Replacing the Antenna WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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.
Removing the Camera WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 Follow the instructions from step 1 to step 8 in “Removing the Back Cover”.
3 Disconnect the camera cable from the camera module.
Replacing the Camera WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Connect the camera cable to the camera module. 2 Turn the camera module over.
Removing the Display Assembly WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 1 Follow the instructions from step 1 to step 8 in “Removing the Back Cover”.
3 4 66 Peel the tapes and lift the display-backlight cable and display cable off the display panel. 1 connector latches (2) 2 display cable 3 tape 4 display-backlight cable Remove the screws that secure the display panel to the display bezel.
5 6 Lift the display panel off the display bezel. 1 screws (8) 3 display bezel 2 display panel Pry the display panel off the display bezel and place it on a flat and clean surface.
7 68 Remove the screws that secure the display-panel brackets to the display panel.
Replacing the Display Assembly WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure 1 Place the display panel on a flat and clean surface.
7 70 Follow the instructions from step 2 to step 6 in “Replacing the Back Cover”.
Removing the Display Bezel WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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 1 Follow the instructions from step 1 to step 8 in “Removing the Back Cover”.
1 72 display bezel
Replacing the Display Bezel WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in 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. Procedure Place the display bezel on a flat and clean surface.
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: 1 Turn on the computer. 2 Go to dell.com/support. 3 If you have your computer's Service Tag, type your computer's Service Tag and click Submit. If you do not have your computer's Service Tag, click Detect My Product to allow automatic detection of the Service Tag.
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 Accessing Windows Help Windows 8.1 — Open the Search charm, type Help and Support in the search box and press Enter. Windows 7 — Click Start → Help and Support. Information about Dell products and services See dell.com.
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.
