Dell Inspiron 14 N4120 Service Manual
Dell Inspiron 14 N4120 Service Manual

Dell Inspiron 14 N4120 Service Manual

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Dell™ Inspiron™ N4110

Service Manual

Regulatory model: P20G
Regulatory type: P20G001

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Summary of Contents for Dell Inspiron 14 N4120

  • Page 1: Service Manual

    Dell™ Inspiron™ N4110 Service Manual Regulatory model: P20G Regulatory type: P20G001...
  • Page 2 Information in this document is subject to change without notice. © 2011 Dell Inc. All rights reserved. Trademarks used in this text: Dell™, the DELL logo, and Inspiron™ are trademarks of Dell Inc.; Microsoft®, Windows®, and the Windows start button logo are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.
  • Page 3: Table Of Contents

    Contents Before You Begin ....Recommended Tools ....Turning Off Your Computer .
  • Page 4 Replacing the Optical Drive ....Memory Module(s) ....Removing the Memory Module(s) .
  • Page 5 11 Wireless Mini-Card(s) ....Removing the Mini-Card(s) ....Replacing the Mini-Card(s) ....12 Thermal Fan .
  • Page 6 Removing the Display Brackets ..Replacing the Display Brackets ..14 Camera Module ....Removing the Camera Module .
  • Page 7 19 Coin-Cell Battery ....Removing the Coin-Cell Battery ... . . Replacing the Coin-Cell Battery .
  • Page 8 Replacing the AC-Adapter Connector ..25 Flashing the BIOS ....Contents...
  • Page 9: Before You Begin

    • Phillips screwdriver • Plastic scribe • BIOS executable update program available at support.dell.com Turning Off Your Computer CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer.
  • Page 10: Before Working Inside Your Computer

    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.
  • Page 11 CAUTION: To help prevent damage to the system board, remove the main battery (see "Removing the Battery" on page 15) before working inside the computer. 7 Remove the battery (see "Removing the Battery" on page 15). 8 Turn the computer top-side up, open the display, and press the power button to ground the system board.
  • Page 12 Before You Begin...
  • Page 13: Top Cover

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 14: Replacing The Top Cover

    1 Follow the instructions in "Before You Begin" on page 9. NOTE: Ensure that the Dell logo is facing towards the back of the computer while replacing the top cover. 2 Align the top cover to the display back cover.
  • Page 15: Battery

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 16: Replacing The Battery

    battery release latch 2 battery battery lock latch Replacing the Battery 1 Follow the instructions in "Before You Begin" on page 9. 2 Slide the battery into the battery bay until it clicks into place. 3 Slide the battery lock latch to the lock position. Battery...
  • Page 17: Module Cover

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 18: Replacing The Module Cover

    captive screw module cover tabs (2) Replacing the Module Cover 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the tabs on the module cover with the slots on the computer base and gently snap the cover in place. 3 Tighten the captive screw that secures the module cover to the computer base.
  • Page 19: Optical Drive

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 20 optical-drive assembly screw 6 Remove the two screws that secure the optical-drive bracket to the optical drive. 7 Pull the optical-drive bezel to detach it from the optical drive. Optical Drive...
  • Page 21: Replacing The Optical Drive

    screws (2) optical-drive bracket optical drive optical-drive bezel Replacing the Optical Drive 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the tabs on the optical-drive bezel with the slots on the optical drive and snap the optical-drive bezel into place. 3 Align the screw holes on the optical-drive bracket with the screw holes on the optical drive and replace the two screws.
  • Page 22 Optical Drive...
  • Page 23: Memory Module(S)

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 24: Replacing The Memory Module(S)

    memory-module connector securing clips (2) memory module Replacing the Memory Module(s) CAUTION: If you need to install memory modules in two connectors, install a memory module in the connector labeled “DIMM A” before you install a memory module in the connector labeled “DIMM B.” 1 Follow the instructions in "Before You Begin"...
  • Page 25 notch 4 Replace the module cover (see "Replacing the Module Cover" on page 18). 5 Replace the battery (see "Replacing the Battery" on page 16), or connect the AC adapter to your computer and an electrical outlet. CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer.
  • Page 26 Memory...
  • Page 27: Keyboard

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 28 plastic scribe keyboard CAUTION: Be extremely careful when removing and handling the keyboard. Failure to do so could result in scratching the display panel. 6 Ease the keyboard up until it clears off the palm rest. 7 Carefully turn the keyboard over and place it on the palm-rest assembly. 8 Lift the connector latch that secures the keyboard cable to the connector on the system board and disconnect the keyboard cable.
  • Page 29: Replacing The Keyboard

    keyboard cable keyboard-cable connector Replacing the Keyboard 1 Follow the instructions in "Before You Begin" on page 9. 2 Slide the keyboard cable into the connector on the system board. Press down on the connector latch to secure the keyboard cable to the connector on the system board.
  • Page 30 6 Replace the battery (see "Replacing the Battery" on page 16). Keyboard...
  • Page 31: Palm-Rest Assembly

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 32 7 Remove the five screws on the palm-rest assembly. CAUTION: Pull on the plastic tab on top of the connectors to avoid damaging the connectors. 8 Lift the connector latches and pull the pull-tabs to disconnect the power-button cable, touch-pad cable, and hot-key board cable from the connectors on the system board.
  • Page 33 touch-pad cable power-button cable hot-key board cable Palm-Rest Assembly...
  • Page 34 CAUTION: Carefully separate the palm rest from the computer base to avoid damage to the palm rest. 9 Using a plastic scribe, carefully pry out the palm-rest assembly along the rear edge and then ease the palm-rest assembly from the computer base. 10 Lift the palm-rest assembly off the computer base.
  • Page 35: Replacing The Palm-Rest Assembly

    Replacing the Palm-Rest Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Replace the power button board (see "Replacing the Power Button Board" on page 42). 3 Replace the hot-key board (see "Replacing the Hot-Key Board" on page 38).
  • Page 36 Palm-Rest Assembly...
  • Page 37: Hot-Key Board

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 38: Replacing The Hot-Key Board

    screw hot-key board hot-key board cable Replacing the Hot-Key Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the slots on the hot-key board with the alignment posts on the palm- rest assembly and replace the screw. 3 Route the hot-key board cable through the slot on the palm-rest assembly.
  • Page 39 CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Hot-Key Board...
  • Page 40 Hot-Key Board...
  • Page 41: Power Button Board

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 42: Replacing The Power Button Board

    screw power button board power-button board cable Replacing the Power Button Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the slots on the power button board with the alignment posts on the palm-rest assembly and replace the screw. 3 Route the power-button board cable through the slot on the palm-rest assembly.
  • Page 43 8 Replace the module cover (see "Replacing the Module Cover" on page 18). 9 Replace the battery (see "Removing the Battery" on page 15). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer.
  • Page 44 Power Button Board...
  • Page 45: Wireless Mini-Card(S)

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 46 4 Follow the instructions from step 4 to step 5 in "Removing the Optical Drive" on page 19. 5 Remove the keyboard (see "Removing the Keyboard" on page 27). 6 Remove the palm-rest assembly (see "Removing the Palm-Rest Assembly" on page 31). 7 Disconnect the two antenna cables from the Mini-Card(s).
  • Page 47: Replacing The Mini-Card(S)

    10 If you are removing the WLAN Mini-Card, detach it from the WLAN Mini-Card bracket. Mini-Card bracket Mini-Card CAUTION: When the Mini-Card is not in the computer, store it in protective antistatic packaging. For more information, see "Protecting Against Electrostatic Discharge"...
  • Page 48 Failure to do so may result in damage to the computer. 12 Install the drivers and utilities for your computer, as required. NOTE: If you are installing a communication card from a source other than Dell, you must install the appropriate drivers and utilities. Wireless Mini-Card(s)
  • Page 49: Thermal Fan

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 50: Replacing The Thermal Fan

    screw thermal fan thermal fan connector display cable Replacing the Thermal Fan 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the thermal fan on the computer base and replace the screw. 3 Connect the thermal fan cable to the connector on the system board. 4 Connect the display cable to the connector on the system board.
  • Page 51 6 Replace the keyboard (see "Replacing the Keyboard" on page 29). 7 Replace the battery (see "Replacing the Battery" on page 16). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer.
  • Page 52 Thermal Fan...
  • Page 53: Display

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 54 6 Remove the keyboard (see "Removing the Keyboard" on page 27). 7 Remove the palm-rest assembly (see "Removing the Palm-Rest Assembly" on page 31). 8 Loosen the display cable grounding screw. 9 Disconnect the display cable from the connector on the system board. 10 Disconnect the Mini-Card antenna cables from the connectors on the Mini-Card(s) (see "Removing the Mini-Card(s)"...
  • Page 55 display cable grounding screw display-cable connector Mini-Card antenna cables (4) 11 Remove the four screws that secure the display assembly to the computer base. 12 Lift the display assembly off the computer base. Display...
  • Page 56: Replacing The Display Assembly

    display assembly screws (4) Replacing the Display Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the display assembly in position and replace the four screws that secure the display assembly to the computer base. 3 Route the display cable and Mini-Card antenna cables through the routing guides.
  • Page 57: Display Bezel

    7 Replace the palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 35). 8 Replace the keyboard (see "Replacing the Keyboard" on page 29). 9 Replace the two screws at the bottom of the computer. 10 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive"...
  • Page 58: Replacing The Display Bezel

    display bezel Replacing the Display Bezel 1 Follow the instructions in "Before You Begin" on page 9. 2 Realign the display bezel over the display panel and gently snap it into place. 3 Replace the display assembly (see "Replacing the Display Assembly" on page 56).
  • Page 59: Replacing The Display Panel

    2 Remove the display assembly (see "Removing the Display Assembly" on page 53). 3 Remove the display bezel (see "Removing the Display Bezel" on page 57). 4 Remove the six screws that secure the display panel to the display cover. 5 Note the routing of the display cable and Mini-Card(s) cables and remove the cables from the routing guides on the display cover.
  • Page 60: Display Cable

    CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Display Cable Removing the Display Cable 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the display assembly (see "Removing the Display Assembly"...
  • Page 61: Hinge Caps

    Replacing the Display Cable 1 Follow the instructions in "Before You Begin" on page 9. 2 Connect the display cable to the connector on the display panel and secure it with the tape. 3 Turn the display panel over and place it on the display cover. 4 Replace the display panel (see "Replacing the Display Panel"...
  • Page 62: Replacing The Hinge Caps

    display hinges (2) hinge caps (2) Replacing the Hinge Caps 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the tabs on the hinge caps with the slots on the display panel brackets and snap them into place. 3 Turn the display panel over and place it on the display cover.
  • Page 63: Replacing The Display Brackets

    3 Remove the display bezel (see "Removing the Display Bezel" on page 57). 4 Remove the hinge caps (see "Removing the Hinge Caps" on page 61). 5 Remove the four screws (two on each side) that secure the display panel brackets to the display panel.
  • Page 64 6 Replace the display assembly (see "Replacing the Display Assembly" on page 56). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer.
  • Page 65: Camera Module

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 66: Replacing The Camera Module

    12 Remove the camera module. tape camera cable camera module plastic scribe Replacing the Camera Module 1 Follow the instructions in "Before You Begin" on page 9. 2 Connect the camera cable to the connector on the camera module. 3 Adhere the tape that secures the camera cable to the camera module. 4 Align the slots on the camera module with the alignment posts on the display cover.
  • Page 67 7 Replace the palm-rest assembly (see "Replacing the Palm-Rest Assembly" on page 35). 8 Replace the keyboard (see "Replacing the Keyboard" on page 29). 9 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 21. 10 Replace the module cover (see "Replacing the Module Cover"...
  • Page 68 Camera Module...
  • Page 69: Hinge Cover

    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: To help prevent damage to the system board, remove the main battery (see "Removing the Battery"...
  • Page 70 9 Release the two tabs that secure the hinge cover to the computer base. tabs (2) 10 Lift the hinge cover off the computer base. Hinge Cover...
  • Page 71: Replacing The Hinge Cover

    hinge cover Replacing the Hinge Cover 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the two tabs on the hinge cover with the slots on the computer base and snap the hinge cover into place. 3 Replace the two screws at the bottom of the computer.
  • Page 72 CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Hinge Cover...
  • Page 73: Vga Connector Board

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 74: Replacing The Vga Connector Board

    screw display cable Replacing the VGA Connector Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the connector on the VGA connector board with the slot on the computer base. 3 Connect the display cable to the connector on the system board. 4 Replace the screw that secures the VGA connector board to the computer base.
  • Page 75 9 Replace the battery (see "Replacing the Battery" on page 16). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. VGA Connector Board...
  • Page 76 VGA Connector Board...
  • Page 77: System Board

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 78 AC-adapter connector cable 8 Remove the keyboard (see "Removing the Keyboard" on page 27). 9 Remove the palm-rest assembly (see "Removing the Palm-Rest Assembly" on page 31). 10 Remove the thermal fan (see "Removing the Thermal Fan" on page 49). 11 Loosen the display cable grounding screw.
  • Page 79 display cable connector display cable grounding screw speakers cable connector 14 Lift the system board assembly to disconnect the connector on the system board from the connector on the I/O board. System Board...
  • Page 80 system board 15 Turn the system board over. 16 Remove the coin-cell battery (see "Removing the Coin-Cell Battery" on page 87). 17 Follow the instructions from step 3 to step 5 in "Removing the Hard-Drive Assembly" on page 95. 18 Remove the thermal cooling assembly (see "Removing the Thermal Cooling Assembly"...
  • Page 81: Replacing The System Board

    Replacing the System Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Replace the processor module (see "Replacing the Processor Module" on page 92). 3 Replace the thermal cooling assembly (see "Replacing the Thermal Cooling Assembly" on page 90. 4 Follow the instructions from step 5 to step 7 in "Replacing the Hard-Drive Assembly"...
  • Page 82: Entering The Service Tag In The Bios

    2 Turn on the computer. 3 Press <F2> as soon as you see the Dell logo to enter the system setup program. 4 Navigate to the security tab and enter the service tag in the Set Service Tag field.
  • Page 83: Speakers

    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: To help prevent damage to the system board, remove the main battery (see "Removing the Battery"...
  • Page 84: Replacing The Speakers

    speakers (2) speakers cable Replacing the Speakers 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the speakers on the computer base and route the speakers cable through the routing guides. 3 Follow the instructions from step 7 to step 20 in "Replacing the System Board"...
  • Page 85 CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. Speakers...
  • Page 86 Speakers...
  • Page 87: Coin-Cell Battery

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 88: Replacing The Coin-Cell Battery

    plastic scribe coin-cell battery Replacing the Coin-Cell Battery 1 Follow the instructions in "Before You Begin" on page 9. 2 Hold the coin-cell battery with the positive side up. 3 Slide the coin-cell battery into the slot and gently press until it snaps in place.
  • Page 89: Thermal Cooling Assembly

    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: 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).
  • Page 90: Replacing The Thermal Cooling Assembly

    thermal cooling assembly captive screws (7) Replacing the Thermal Cooling Assembly NOTE: The original thermal grease can be reused if the original processor and heat sink are reinstalled together. If either the processor or the heat sink is replaced, use the thermal pad provided in the kit to ensure that thermal conductivity is achieved.
  • Page 91: Processor Module

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 92: Replacing The Processor Module

    ZIF socket ZIF-socket cam screw Replacing the Processor Module 1 Follow the instructions in "Before You Begin" on page 9. NOTE: If a new processor is installed, you will receive a new thermal-cooling assembly, which will include an affixed thermal pad, or you will receive a new thermal pad along with documentation to illustrate proper installation.
  • Page 93 CAUTION: To avoid damage to the processor, hold the screwdriver perpendicular to the processor when turning the cam screw. 3 Tighten the ZIF socket by turning the cam screw clockwise to secure the processor module to the system board. 4 Replace the thermal cooling assembly (see "Replacing the Thermal Cooling Assembly"...
  • Page 94 Processor Module...
  • Page 95: Hard-Drive Assembly

    Dell does not guarantee compatibility or provide support for hard drives from sources other than Dell. NOTE: If you are installing a hard drive from a source other than Dell, you need to install an operating system, drivers, and utilities on the new hard drive. Removing the Hard-Drive Assembly 1 Follow the instructions in "Before You Begin"...
  • Page 96 4 Slide the hard-drive assembly in the direction shown in the illustration to disconnect it from the connector on the system board. 5 Lift the hard-drive assembly off the system board. hard-drive assembly screw 6 Remove the four screws that secure the hard-drive bracket to the hard drive.
  • Page 97: Replacing The Hard-Drive Assembly

    screws (4) hard-drive bracket hard drive Replacing the Hard-Drive Assembly 1 Follow the instructions in "Before You Begin" on page 9. 2 Remove the new hard drive from its packaging. Save the original packaging for storing or shipping the hard drive. 3 Place the hard drive in the hard-drive bracket.
  • Page 98 8 Follow the instructions from step 6 to step 20 in "Replacing the System Board" on page 81. CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer.
  • Page 99: O Board

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 100: Replacing The I/O Board

    screws (2) I/O board Replacing the I/O Board 1 Follow the instructions in "Before You Begin" on page 9. 2 Align the connectors on the I/O board into the slots on the computer base. 3 Replace the two screws that secure the I/O board to the computer base. 4 Replace the hinge cover (see "Replacing the Hinge Cover"...
  • Page 101: Ac-Adapter Connector

    Regulatory Compliance Homepage at dell.com/regulatory_compliance. 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: 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).
  • Page 102 screw AC-adapter connector cable Replacing the AC-Adapter Connector 1 Follow the instructions in "Before You Begin" on page 9. 2 Place the AC-adapter connector on the computer base. 3 Replace the screw that secures the AC-adapter connector to the computer base.
  • Page 103 AC-Adapter Connector...
  • Page 104 AC-Adapter Connector...
  • Page 105: Flashing The Bios

    The BIOS may require flashing when an update is available or when replacing the system board. To flash the BIOS: 1 Turn on the computer. 2 Go to support.dell.com/support/downloads. 3 Locate the BIOS update file for your computer: NOTE: The Service Tag for your computer is located on a label at the bottom of your computer.
  • Page 106 8 Double-click the file icon on the desktop and follow the instructions on the screen. Flashing the BIOS...

This manual is also suitable for:

Inspiron 14rInspiron n4110Inspiron n4120

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