Dell Inspiron M421R Owner's Manual

Owner's manual.
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Dell Inspiron 14R/M421R
Owner's Manual
Computer model: Inspiron 5420/7420/5425
Regulatory model: P33G
Regulatory type: P33G001/P33G002

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   Summary of Contents for Dell Inspiron M421R

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    Dell Inspiron 14R/M421R Owner’s Manual Computer model: Inspiron 5420/7420/5425 Regulatory model: P33G Regulatory type: P33G001/P33G002...

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    © 2012 Dell Inc. All rights reserved. Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. Trademarks used in this text: Dell™, the DELL logo, and Inspiron™ are trademarks of Dell Inc.; ® ®...

  • Page 3: Table Of Contents

    Contents Before You Begin ......Turn Off Your Computer and Connected Devices . . . Safety Instructions .

  • Page 4: Table Of Contents

    11 Removing the Memory Module(s) ..Prerequisites ......Procedure .

  • Page 5: Table Of Contents

    21 Removing the Power-Adapter Port ..Prerequisites ......Procedure .

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    31 Removing the Display Bezel ....Prerequisites ......Procedure .

  • Page 7: Table Of Contents

    41 Removing the System Board ....Prerequisites ......Procedure .

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    Contents...

  • Page 9: Before You Begin, Turn Off Your Computer And Connected Devices, Safety Instructions

    Before You Begin Turn Off Your Computer and Connected Devices CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn off your computer. Save and close all open files and exit all open programs. Follow the instructions to shut down your computer based on the operating system installed on your computer.

  • Page 10: Recommended Tools

    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 dell.com/ regulatory_compliance. WARNING: Disconnect all power sources before opening the computer cover or panels.

  • Page 11: After Working Inside Your Computer

    After Working Inside Your Computer After you complete replacement procedures, ensure the following: • Replace all screws and ensure that no stray screws remain inside your computer • Connect any external devices, cables, cards, and any other part(s) you removed before working on your computer •...

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    After Working Inside Your Computer...

  • Page 13: Removing The Switch, Procedure

    WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Slide the switch release latch to the side.

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    Removing the Switch...

  • Page 15: Replacing The Switch, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the tabs at the bottom of the switch with the slots on the display cover and snap the switch into place.

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    Replacing the Switch...

  • Page 17: Removing The Battery, Procedure

    WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Close the display and turn the computer over.

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    Removing the Battery...

  • Page 19: Replacing The Battery, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the tabs on the battery with the slots on the battery bay and snap the battery until it clicks into place.

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    Replacing the Battery...

  • Page 21: Removing The Keyboard, Prerequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

  • Page 22: Procedure

    Procedure CAUTION: The keycaps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Be careful when removing and handling the keyboard. Turn the computer over and open the display as far as possible. Using a plastic scribe, release the keyboard from the tabs on the palm rest and ease the keyboard up until it clears off the palm rest.

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    Carefully turn the keyboard over and place it on the palm rest. Lift the connector latches and pull the pull-tabs to disconnect the keyboard cable and keyboard-backlight cable from the connectors on the system board. Lift the keyboard away from the computer. 1 keyboard cable 2 connector latch 3 keyboard-backlight cable...

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    Removing the Keyboard...

  • Page 25: Replacing The Keyboard, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Slide the keyboard cable and keyboard-backlight cable into the connectors on the system board and press down on the connector latches to secure the cables.

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    Replacing the Keyboard...

  • Page 27: Removing The Base Cover, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Removing the Base Cover...

  • Page 29: Replacing The Base Cover, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Slide the tabs on the base cover into the slots on the computer base and snap the base cover into place.

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    Replacing the Base Cover...

  • Page 31: Removing The Memory Module(s), Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Removing the Memory Module(s)

  • Page 33: Replacing The Memory Module(s), Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure CAUTION: If you need to install memory modules in two connectors, install a memory module in the connector labeled "DIMM A"...

  • Page 34: Postrequisites

    Postrequisites Replace the base cover. See "Replacing the Base Cover" on page 28. Replace the battery. See "Replacing the Battery" on page 18. Follow the instructions in "After Working Inside Your Computer" on page 10. Turn on the computer. As the computer boots, it detects the memory module(s) and automatically updates the system configuration information.

  • Page 35: Removing The Hard Drive, Prerequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. CAUTION: To avoid data loss, do not remove the hard drive while the computer is On or in Sleep state.

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    Procedure Pull the pull-tab to disconnect the hard-drive cable from the system-board connector. Remove the screws that secure the hard-drive assembly to the computer base. Make a note of the hard-drive cable routing and remove the cable from the routing guides. Lift the hard-drive assembly along with its cable away from the computer base.

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    Pull the interposer to disconnect the hard-drive cable from the hard-drive. hard-drive assembly interposer Remove the screws that secure the hard-drive bracket to the hard drive. Slide the hard-drive off the hard-drive bracket. screws (4) hard-drive bracket hard drive Removing the Hard Drive...

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    Removing the Hard Drive...

  • Page 39: Replacing The Hard Drive, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. CAUTION: Hard drives are extremely fragile. Exercise care when handling the hard drive.

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    Replacing the Hard Drive...

  • Page 41: Removing The Optical Drive, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Carefully pry the optical-drive bezel and remove it from the optical-drive assembly. Remove the screws that secure the optical-drive bracket to the optical drive. Remove the optical-drive bracket. screws (2) optical-drive bracket optical drive optical-drive bezel Removing the Optical Drive...

  • Page 43: Replacing The Optical Drive, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the screw holes on the optical-drive bracket with the screw holes on the optical drive.

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    Replacing the Optical Drive...

  • Page 45: Removing The Palm Rest, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Turn the computer over and open the display as far as possible. Lift the connector latches and pull the pull-tabs to disconnect the power-button board cable, touchpad cable, and hot-key board cable from the connectors on the system board. Pull the pull-tab to disconnect the display cable from the connector on the system board.

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    Make a note of the display cable routing and remove the cable from the routing guides on the palm rest. Remove the screws that secure the palm rest to the computer base. CAUTION: Carefully separate the palm rest from the display assembly to avoid damage to the display assembly.

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    Removing the Palm Rest...

  • Page 49: Replacing The Palm Rest, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Slide the display cable through the slot on the palm rest.

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    Replacing the Palm Rest...

  • Page 51: Removing The Mini-card, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. If you ordered a wireless Mini-Card with your computer, the card is already installed.

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    Lift the Mini-Card out of the system-board connector. system-board connector 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" in the safety information that shipped with your computer. Removing the Mini-Card...

  • Page 53: Replacing The Mini-card, Procedure

    8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. NOTE: Dell does not guarantee compatibility or provide support for Mini-Cards from sources other than Dell. Your computer has one half Mini-Card slot which supports a Wireless Local Area Network (WLAN) + Bluetooth combo card, Wi-Fi, and Worldwide Interoperability for Microwave Access (WiMax).

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    Postrequisites Replace the palm rest. See "Replacing the Palm Rest" on page 48. Replace the keyboard. See "Replacing the Keyboard" on page 24. Replace the base cover. See "Replacing the Base Cover" on page 28. Replace the battery. See "Replacing the Battery" on page 18. Follow the instructions in "After Working Inside Your Computer"...

  • Page 55: Removing The Power-adapter Port, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Removing the Power-Adapter Port...

  • Page 57: Replacing The Power-adapter Port, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the screw hole on the power-adapter port with the screw hole on the computer base.

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    Replacing the Power-Adapter Port...

  • Page 59: Removing The Coin-cell Battery, Prerequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: The battery may explode if installed incorrectly. Replace the battery only with the same or equivalent type.

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    Procedure Turn the system board over. Using a plastic scribe, gently pry the coin-cell battery out of the battery socket on the system board. plastic scribe 2 coin-cell battery battery socket Removing the Coin-Cell Battery...

  • Page 61: Replacing The Coin-cell Battery, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. WARNING: The battery may explode if installed incorrectly. Replace the battery only with the same or equivalent type.

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    Replacing the Coin-Cell Battery...

  • Page 63: Removing The Fan, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Removing the Fan...

  • Page 65: Replacing The Fan, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Place the fan in the slot on the computer base.

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    Replacing the Fan...

  • Page 67: Removing The Speakers, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Removing the Speakers...

  • Page 69: Replacing The Speakers, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Use the alignment posts on the computer base to place the speakers in position.

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    Replacing the Speakers...

  • Page 71: Removing The Display Assembly, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Turn the computer over and open the display as far as possible. Disconnect the antenna cables from the connectors on the Mini-Card. 1 antenna cables (2) 2 Mini-Card Removing the Display Assembly...

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    Remove the screws that secure the display assembly to the computer base. Lift the display assembly off the computer base. 1 display assembly 2 screws (4) Removing the Display Assembly...

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    Removing the Display Assembly...

  • Page 75: Replacing The Display Assembly, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Place the display assembly in position and replace the screws that secure the display assembly to the computer base.

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    Replacing the Display Assembly...

  • Page 77: Removing The Display Bezel, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Removing the Display Bezel...

  • Page 79: Replacing The Display Bezel, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the display bezel with the display cover and gently snap the display bezel into place.

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    Replacing the Display Bezel...

  • Page 81: Removing The Display Panel, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Carefully lift the display panel and turn it over. Peel and lift the tape that secures the display cable to the display-board connector and then disconnect the display cable. 1 display cable 2 display-board connector 3 tape Lift the display panel away from the display cover. Removing the Display Panel...

  • Page 83: Replacing The Display Panel, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Connect the display cable to the display-board connector and secure it with the tape.

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    Replacing the Display Panel...

  • Page 85: Removing The Display Hinges, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the switch. See "Removing the Switch" on page 12.

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    Turn the display assembly over. Remove the screws that secure the display hinges to the display cover. Lift the display hinges off the display cover. 1 display panel 2 screws (10) 3 display hinges (2) Removing the Display Hinges...

  • Page 87: Replacing The Display Hinges, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the screw holes on the display hinges with the screw holes on the display cover.

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    Replacing the Display Hinges...

  • Page 89: Removing The Camera Module, Prerequisites, Procedure

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Turn the camera module over. Peel and lift the tape that secures the camera cable to the camera module. 1 tape 2 camera cable Removing the Camera Module...

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    Disconnect the camera cable from the connector on the camera module. 1 camera cable connector 2 camera module 3 camera cable Removing the Camera Module...

  • Page 92

    Removing the Camera Module...

  • Page 93: Replacing The Camera Module, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Connect the camera cable to the connector on the camera module and secure it with the tape.

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    Replacing the Camera Module...

  • Page 95: Removing The Processor, Prerequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

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    Procedure To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate the ZIF- socket cam screw counterclockwise until it comes to the cam stop. CAUTION: To ensure maximum cooling for the processor, do not touch the heat transfer areas on the processor thermal cooling assembly. The oils in your skin can reduce the heat transfer capability of the thermal pads.

  • Page 97: Replacing The Processor, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure NOTE: If you install a new processor, a new thermal cooling assembly including an affixed thermal pad or a new thermal pad along with documentation to illustrate proper installation is shipped.

  • Page 98

    Replace the battery. See "Replacing the Battery" on page 18. Follow the instructions in "After Working Inside Your Computer" on page 10. Replacing the Processor...

  • Page 99: Removing The System Board, Prerequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

  • Page 100

    Procedure NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS after you replace the system-board assembly. NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can reconnect them correctly after you replace the system-board assembly.

  • Page 101

    Lift the system board at an angle and release the connectors on the system board from the slots on the computer base. Remove the processor. See "Removing the Processor" on page 94. Remove the processor heat-sink. See "Removing the Processor Heat-Sink" on page 104.

  • Page 102

    Removing the System Board...

  • Page 103: Replacing The System Board, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Replace the screws that secure the daughter board to the system board.

  • Page 104: Entering The Service Tag In The Bios

    Entering the Service Tag in the BIOS Turn on the computer. Press <F2> during POST to enter the system setup program. Navigate to the main tab and enter the Service Tag in the Service Tag Setting field. Replacing the System Board...

  • Page 105: Removing The Processor Heat-sink, Prerequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Remove the battery. See "Removing the Battery" on page 16.

  • Page 106

    Procedure Turn the system-board assembly over. In sequential order (indicated on the processor heat-sink), loosen the captive screws that secure the processor heat-sink to the system board. Lift the processor heat-sink off the system board. 1 processor heat-sink 2 captive screws (6) Removing the Processor Heat-Sink...

  • Page 107: Replacing The Processor Heat-sink, Procedure, Postrequisites

    "Before You Begin" on page 8. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure Align the captive screws on the processor heat-sink with the screw holes on the system board.

  • Page 108

    Replacing the Processor Heat-Sink...

  • Page 109: Flashing The Bios

    • Choose from My Products and Services List • Choose from a list of all Dell products Click Continue and follow the instructions on the screen. A list of results appears on the screen. Click BIOS. Click Download File to download the latest BIOS file.

  • Page 110

    Flashing the BIOS...

This manual also for:

Inspiron 5420, Inspiron 7420, Inspiron 5425

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