Dell M4040/14-N4050 owner manual Before Working Inside Your Computer

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Before Working Inside Your Computer

Use the following safety guidelines to help protect your computer from potential damage and to ensure your own personal safety.

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as a connector on your computer).

CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.

CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and aligned.

CAUTION: To avoid damaging the computer, perform the following steps before you begin working inside the computer.

1Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.

2Turn off your computer, see "Turning Off Your Computer" on page 9, and all attached devices.

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.

3Disconnect all telephone or network cables from the computer.

4Press and eject any installed cards from the 3-in-1 media card reader.

5Disconnect your computer and all attached devices from their electrical outlets.

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Before You Begin

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Contents Regulatory model P22G Regulatory type P22G001 P22G002 Regulatory model P22G Contents Replacing the Optical Drive Palm-Rest Assembly Thermal Cooling Assembly Removing the Camera Module Replacing the Camera Module Contents Contents Recommended Tools Before You BeginTurning Off Your Computer Before Working Inside Your Computer Before You Begin Before You Begin Battery Removing the BatteryReplacing the Battery Keyboard Removing the KeyboardPlastic scribe Tabs Keyboard Replacing the Keyboard Keyboard Memory Modules Removing the Memory ModulesReplacing the Memory Modules Click Start → Control Panel→ System and Security→ System Memory Optical Drive Removing the Optical DriveReplacing the Optical Drive Palm-Rest Assembly Removing the Palm-Rest AssemblyPalm-Rest Assembly Power-button board cable Touch-pad cable Replacing the Palm-Rest Assembly Replace the battery. See Replacing the Battery on Palm-Rest Assembly Power Button Board Removing the Power Button BoardReplacing the Power Button Board Hard Drive Removing the Hard DriveHard-drive assembly Replacing the Hard Drive Hard Drive Wireless Mini-Card Removing the Mini-CardReplacing the Mini-Card Wireless Mini-Card Wireless Mini-Card Audio Board Removing the Audio BoardReplacing the Audio Board Coin-Cell Battery Removing the Coin-Cell BatteryBattery socket Coin-cell battery Coin-cell battery cable Replacing the Coin-Cell Battery Coin-Cell Battery USB Board Removing the USB BoardReplacing the USB Board Thermal Cooling Assembly Removing the Thermal Cooling AssemblyReplacing the Thermal Cooling Assembly Processor Module For Inspiron 14-N4050 Only Removing the Processor ModuleReplacing the Processor Module Processor Module For Inspiron 14-N4050 Only Processor Module For Inspiron 14-N4050 Only Hinge Cover Removing the Hinge CoverHinge Cover Replacing the Hinge Cover Hinge Cover Display Assembly DisplayDisplay cable Mini-Card Mini-Card antenna cables Replacing the Display Assembly Display Bezel Removing the Display BezelDisplay Panel Replacing the Display BezelDisplay cable Display cover Display panel Display-panel brackets Replacing the Display Panel Display Display Camera Module Removing the Camera ModuleReplacing the Camera Module Camera Module Camera Module System Board Removing the System BoardDisplay cable AC-adapter cable Speakers cable Replacing the System Board Entering the Service Tag in the Bios Flashing the Bios Click Enter a TagFlashing the Bios