Dell XPS 14 L421X Owners Manual

Dell XPS 14 L421X Manual

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  • Dell XPS 14 L421X | Owners Manual - Page 1
    Dell XPS 14 Owner's Manual Computer model: XPS L421X Regulatory model: P30G Regulatory type: P30G001
  • Dell XPS 14 L421X | Owners Manual - Page 2
    WARNING indicates a potential for property damage, personal injury, or death. © 2012 Dell Inc. Trademarks used in this text: Dell™, the DELL logo, and XPS™ are trademarks of Dell Inc.; Microsoft®, Windows®, and the Windows start button logo are either trademarks or registered trademarks of
  • Dell XPS 14 L421X | Owners Manual - Page 3
    You Begin 9 Turn Off Your Computer and Connected Devices . . . . . 9 Safety Instructions 9 Recommended Tools 10 After Working Inside Your Computer 11 Removing the Base Cover 12 Procedure 12 Replacing the Base Cover 15 Procedure 15 Removing the System Badge 16 Prerequisites 16
  • Dell XPS 14 L421X | Owners Manual - Page 4
    33 Removing the mSATA/WWAN Mini-Card 34 Prerequisites 34 Procedure 34 Replacing the mSATA/WWAN Card 35 Procedure 35 Postrequisites 35 Removing the Hard Drive 36 Prerequisites 36 Procedure 36 Replacing the Hard Drive 39 Procedure 39 Postrequisites 39 4 | Contents
  • Dell XPS 14 L421X | Owners Manual - Page 5
    Status-Light Board 40 Prerequisites 40 Procedure 40 Replacing the Power/Battery Status-Light Board 42 Procedure 42 Postrequisites 42 Removing the Coin-Cell Battery 43 Prerequisites 43 Procedure 43 Replacing the Coin-Cell Battery 44 Procedure 44 Postrequisites 44 Removing the
  • Dell XPS 14 L421X | Owners Manual - Page 6
    the Service Tag in the BIOS 57 Removing the Air Vent 58 Prerequisites 58 Procedure 58 Replacing the Air Vent 59 Procedure 59 Postrequisites 59 Removing the Display 60 Prerequisites 60 Procedure 60 Replacing the Display 62 Procedure 62 Postrequisites 62 Removing the Keyboard
  • Dell XPS 14 L421X | Owners Manual - Page 7
    Flashing the BIOS 72 Contents | 7
  • Dell XPS 14 L421X | Owners Manual - Page 8
    8 | Contents
  • Dell XPS 14 L421X | Owners Manual - Page 9
    all open programs. 2 Click Start and click Shut down. Microsoft Windows shuts down and then the computer turns off. NOTE: If you dell.com/regulatory_compliance. WARNING: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the computer, replace
  • Dell XPS 14 L421X | Owners Manual - Page 10
    any installed card from the media-card reader. Recommended Tools The procedures in this document may require the following tools: • Phillips screwdriver • Torx #5 (T5) screwdriver 10 | Before You Begin
  • Dell XPS 14 L421X | Owners Manual - Page 11
    Connect any external devices, cables, cards, and any other part(s) you removed before working on your computer. • Connect your computer and all attached devices to their electrical outlets. CAUTION: Before turning on your computer, replace all screws and ensure that no stray screws remain inside the
  • Dell XPS 14 L421X | Owners Manual - Page 12
    For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure 1 Close the display, and turn the computer over. 2 Place your fingertip at the indicator on the base-cover assembly. 3 Turn the system badge over and place it on the
  • Dell XPS 14 L421X | Owners Manual - Page 13
    the screws that secure the base-cover assembly to the palm-rest assembly. 6 Starting from the back of the computer, carefully pry the base-cover assembly, turn the base-cover assembly over, and place it on the palm-rest assembly. 2 1 3 1 screws (2) 3 base-cover assembly 4 2 T5 screws (6) 4 tabs
  • Dell XPS 14 L421X | Owners Manual - Page 14
    the battery-LED-board cable from the system-board. 5 1 2 3 4 1 connector latch 3 battery-LED-board cable 5 battery-LED board 2 pull-tab 4 base-cover assembly 8 Remove the battery-LED board from the base-cover assembly. See "Removing the Battery-LED Board" on page 19. 14 | Removing the Base Cover
  • Dell XPS 14 L421X | Owners Manual - Page 15
    best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Procedure 1 Replace the battery-LED board. See "Replacing the Battery-LED Board" on page 21. 2 Slide the battery-LED-board cable into the battery-LED-board cable connector and press down on the
  • Dell XPS 14 L421X | Owners Manual - Page 16
    on page 11. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. Procedure 1 Peel the tapes that secure the system badge to the
  • Dell XPS 14 L421X | Owners Manual - Page 17
    2 Turn the base-cover assembly over. 3 Using your fingertips, carefully turn the system badge over and remove the tapes from the slots on the base-cover assembly. 4 Lift the system badge off the base-cover assembly. 2 1 1 tabs (2) 2 system badge Removing the System Badge | 17
  • Dell XPS 14 L421X | Owners Manual - Page 18
    into place. 3 Turn the base-cover assembly over. 4 Peel the stickers from the tapes and adhere the tapes to secure the system badge to the base-cover assembly. Postrequisites 1 Follow the instructions from step 2 to step 6 in "Removing the Base Cover" on page 12. 18 | Replacing the System Badge
  • Dell XPS 14 L421X | Owners Manual - Page 19
    the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. Procedure 1 Peel the mylar from the battery-LED board. 2 Remove the screws that secure the battery-LED-board bracket to the base cover. 3 Lift the battery-LED-board bracket off the base cover. 2 1 1 battery-LED
  • Dell XPS 14 L421X | Owners Manual - Page 20
    4 Remove the screw that secures the battery-LED board to the base cover. 5 Lift and slide the battery-LED board out of the tab on the base cover. 2 1 1 battery-LED board 2 screw 20 | Removing the Battery-LED Board
  • Dell XPS 14 L421X | Owners Manual - Page 21
    holes on the base cover. 4 Replace the screws that secure the battery-LED-board bracket to the base cover. 5 Adhere the mylar on the battery- LED board. Postrequisites 1 Follow the instructions from step 2 to step 6 in "Removing the Base Cover" on page 12. Replacing the Battery-LED Board | 21
  • Dell XPS 14 L421X | Owners Manual - Page 22
    " on page 11. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance. Prerequisites Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. Procedure 1 Peel the mylar from the speakers. 1 1 mylar 22
  • Dell XPS 14 L421X | Owners Manual - Page 23
    2 Disconnect the speaker cable from the I/O-board connector. 3 Note the location of the tape that secures the speaker cable to the battery and peel the tape off. 4 Remove the screws that secure the speakers to the palm-rest assembly. 5 Lift the speakers, along with the speaker cable,
  • Dell XPS 14 L421X | Owners Manual - Page 24
    . 3 Adhere the mylar on the speakers. 4 Connect the speaker cable to the I/O-board connector. 5 Adhere the tape that secures the speaker cable to the battery. Postrequisites 1 Follow the instructions from step 2 to step 6 in "Removing the Base Cover" on page 12. 24 | Replacing the Speakers
  • Dell XPS 14 L421X | Owners Manual - Page 25
    . Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. Procedure 1 Remove the screws that secure the battery to the palm-rest assembly. 2 Lift the battery, along with its cable
  • Dell XPS 14 L421X | Owners Manual - Page 26
    with the screw holes on the palm-rest assembly. 3 Replace the screws that secure the battery to the palm-rest assembly. Postrequisites 1 Replace the speakers. See "Replacing the Speakers" on page 24. 2 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 26
  • Dell XPS 14 L421X | Owners Manual - Page 27
    1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure CAUTION: To prevent damage to the memory-module connector, do
  • Dell XPS 14 L421X | Owners Manual - Page 28
    your fingertips, carefully spread apart the securing clips on each end of the memory-module connector until the memory module pops up. 3 Remove the memory module from the memory-module connector. 1 3 2 1 memory-module connector 3 memory module 2 securing clips (2) 28 | Removing the Memory Module
  • Dell XPS 14 L421X | Owners Manual - Page 29
    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 You Begin" on page 9. After working inside your computer, follow the instructions in "After Working Inside Your Computer" on page 11.
  • Dell XPS 14 L421X | Owners Manual - Page 30
    1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 4 Turn on the computer. As the computer boots, it detects the memory module
  • Dell XPS 14 L421X | Owners Manual - Page 31
    com/regulatory_compliance. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure 1 Disconnect the antenna cables from
  • Dell XPS 14 L421X | Owners Manual - Page 32
    3 Slide and remove the wireless-mini card from the system board. 1 2 1 wireless mini-card connector 2 wireless mini-card 32 | Removing the Wireless Mini-Card
  • Dell XPS 14 L421X | Owners Manual - Page 33
    Color Scheme white black Postrequisites 1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. Replacing the Wireless Mini-Card | 33
  • Dell XPS 14 L421X | Owners Manual - Page 34
    com/regulatory_compliance. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure 1 Peel the mylar from the mSATA/WWAN
  • Dell XPS 14 L421X | Owners Manual - Page 35
    stripe black with gray stripe Postrequisites 1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. Replacing the mSATA/WWAN Card | 35
  • Dell XPS 14 L421X | Owners Manual - Page 36
    . Exercise care when handling the hard drive. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure 1 Lift
  • Dell XPS 14 L421X | Owners Manual - Page 37
    6 Lift the hard-drive assembly, along with its cable, out of the palm-rest assembly. 1 2 3 5 4 1 screws (4) 3 hard-drive assembly 5 pull-tab 2 mylar 4 hard-drive cable 7 Disconnect the interposer from the hard-drive assembly. 1 1 hard-drive assembly 2 2 interposer Removing the Hard Drive | 37
  • Dell XPS 14 L421X | Owners Manual - Page 38
    8 Remove the screws that secure the hard-drive bracket to the hard drive. 9 Slide the hard drive out of the hard-drive bracket. 1 2 3 1 screws (4) 3 hard drive 2 hard-drive bracket 38 | Removing the Hard Drive
  • Dell XPS 14 L421X | Owners Manual - Page 39
    connector latch to secure the cable. Postrequisites 1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. Replacing the Hard Drive | 39
  • Dell XPS 14 L421X | Owners Manual - Page 40
    .com/regulatory_compliance. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure 1 Lift the connector latch and
  • Dell XPS 14 L421X | Owners Manual - Page 41
    4 Lift the power/battery status-light board, along with its cable, off the palm-rest assembly. 1 2 3 6 5 4 1 connector latch 3 power/battery-status-light cable 5 screw 2 pull-tab 4 power/battery status-light board 6 tape Removing the Power/Battery Status-Light Board | 41
  • Dell XPS 14 L421X | Owners Manual - Page 42
    -light cable. Postrequisites 1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 42 | Replacing the Power/Battery Status-Light Board
  • Dell XPS 14 L421X | Owners Manual - Page 43
    regulatory_compliance. CAUTION: Removing the coin-cell battery resets the BIOS settings to default. It is recommended that you note the BIOS settings before removing the coin-cell battery. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove
  • Dell XPS 14 L421X | Owners Manual - Page 44
    /WWAN card. "Replacing the mSATA/WWAN Card" on page 35. 2 Replace the battery. See "Replacing the Battery" on page 26. 3 Replace the speakers. See "Replacing the Speakers" on page 24. 4 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 44 | Replacing the Coin
  • Dell XPS 14 L421X | Owners Manual - Page 45
    com/regulatory_compliance. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure 1 Disconnect the fan cable from
  • Dell XPS 14 L421X | Owners Manual - Page 46
    the screw that secures the fan to the palm-rest assembly. Postrequisites 1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 46
  • Dell XPS 14 L421X | Owners Manual - Page 47
    /regulatory_compliance. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. Procedure 1 In sequential order (indicated
  • Dell XPS 14 L421X | Owners Manual - Page 48
    -sink to the system board. Postrequisites 1 Replace the battery. See "Replacing the Battery" on page 26. 2 Replace the speakers. See "Replacing the Speakers" on page 24. 3 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 48 | Replacing the Processor Heat-Sink
  • Dell XPS 14 L421X | Owners Manual - Page 49
    .com/regulatory_compliance. Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. 4 Remove the mSATA/WWAN card. See "Removing
  • Dell XPS 14 L421X | Owners Manual - Page 50
    4 Remove the screws that secure the I/O board to the palm-rest assembly. 5 Lift the I/O board at an angle and release it from the tab on the palm-rest assembly. 6 Remove the I/O board off the palm-rest assembly. 1 2 3 1 screws (2) 3 tab 2 I/O board 50 | Removing the I/O Board
  • Dell XPS 14 L421X | Owners Manual - Page 51
    . See "Replacing the mSATA/WWAN Card" on page 35. 2 Replace the battery. See "Replacing the Battery" on page 26. 3 Replace the speakers. See "Replacing the Speakers" on page 24. 4 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. Replacing the I/O Board
  • Dell XPS 14 L421X | Owners Manual - Page 52
    . Prerequisites 1 Follow the instructions from step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. 4 Remove the memory module(s). See "Removing the Memory Module" on page
  • Dell XPS 14 L421X | Owners Manual - Page 53
    under the system badge. You must enter the Service Tag in the BIOS after you replace the system board. 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. 1 Peel the mylar from
  • Dell XPS 14 L421X | Owners Manual - Page 54
    4 Lift the connector latch and using, the pull-tab, disconnect the ribbon cable from the system board. 1 2 1 camera cable 3 connector latch 5 ribbon cable 54 3 2 display cable 4 pull-tab 54 | Removing the System Board
  • Dell XPS 14 L421X | Owners Manual - Page 55
    from the system board. 8 1 1 hard-drive cable 3 pull-tab 5 keyboard cable 7 tape 23 4 5 6 7 2 connector latch 4 touchpad cable 6 power/battery status-light cable 8 keyboard-backlight cable 6 Note the routing of the antenna cables and remove the cables from the routing guides on the palm-rest
  • Dell XPS 14 L421X | Owners Manual - Page 56
    8 Lift the system-board assembly at an angle and release the ports on the system board from the slots on the palm-rest assembly 1 2 1 system board 2 screws (6) 56 | Removing the System Board
  • Dell XPS 14 L421X | Owners Manual - Page 57
    See "Replacing the Memory Module" on page 29. 5 Replace the battery. See "Replacing the Battery" on page 26. 6 Replace the speakers. See "Replacing the Speakers" on page 24. 7 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. Entering the Service Tag in the BIOS
  • Dell XPS 14 L421X | Owners Manual - Page 58
    Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. 4 Follow the instructions from step 1 to step 5 in "Removing the Hard Drive" on page 36. 5 Remove the memory from the routing guides on the air vent
  • Dell XPS 14 L421X | Owners Manual - Page 59
    to step 8 in "Replacing the Hard Drive" on page 39. 6 Replace the memory module(s). See "Replacing the Memory Module" on page 29. 7 Replace the battery. See "Replacing the Battery" on page 26. 8 Replace the speakers. See "Replacing the Speakers" on page 24. 9 Follow the instructions from step 2 to
  • Dell XPS 14 L421X | Owners Manual - Page 60
    step 1 to step 7 in "Removing the Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. 4 Follow the instructions from step 1 to step 5 in "Removing the Hard Drive" on page 36. 5 Remove the Mini
  • Dell XPS 14 L421X | Owners Manual - Page 61
    3 Remove the screws that secure the display hinges to the palm-rest assembly. 4 Open the palm-rest assembly as far as possible. 1 2 3 1 screws (6) 3 palm-rest assembly 2 display hinges 5 Slide and remove the palm-rest assembly from the display hinges and lift the palm-rest assembly away from
  • Dell XPS 14 L421X | Owners Manual - Page 62
    from step 4 to step 8 in "Replacing the Hard Drive" on page 39. 6 Replace the battery. See "Replacing the Battery" on page 26. 7 Replace the speakers. See "Replacing the Speakers" on page 24. 8 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. 62
  • Dell XPS 14 L421X | Owners Manual - Page 63
    Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. 4 Remove the memory module(s). See "Removing the Memory Module" on page 27. 5 Follow the instructions from step 1 to step 5 in "Removing the Hard Drive
  • Dell XPS 14 L421X | Owners Manual - Page 64
    are fragile, easily dislodged, and time-consuming to replace. Be careful when removing and handling the keyboard. 1 Note the location of the mylars and peel them from the keyboard bracket. 1 1 mylars (3) 2 Remove the screws that secure the keyboard bracket to the palm-rest assembly. 64 | Removing
  • Dell XPS 14 L421X | Owners Manual - Page 65
    3 Lift the keyboard bracket off the keyboard. 1 1 keyboard bracket 4 Remove the screws that secure the keyboard to the palm-rest assembly. Removing the Keyboard | 65
  • Dell XPS 14 L421X | Owners Manual - Page 66
    5 Lift the keyboard off the palm-rest assembly. 1 1 keyboard 66 | Removing the Keyboard
  • Dell XPS 14 L421X | Owners Manual - Page 67
    35. 7 Follow the instructions from step 4 to step 8 in "Replacing the Hard Drive" on page 39. 8 Replace the memory module(s). See "Replacing the Memory Module" on page 29. 9 Replace the battery. See "Replacing the Battery" on page 26. 10 Replace the speakers. See "Replacing the Speakers" on page
  • Dell XPS 14 L421X | Owners Manual - Page 68
    instructions Base Cover" on page 12. 2 Remove the speakers. See "Removing the Speakers" on page 22. 3 Remove the battery. See "Removing the Battery" on page 25. 4 Follow the instructions from step 1 to step 5 in "Removing the Hard Drive Heat-Sink" on page 47. 10 Remove the system board. See "
  • Dell XPS 14 L421X | Owners Manual - Page 69
    Procedure 1 Remove the screws that secure the palm rest to the display hinges. 2 Open the palm rest as far as possible. 1 2 3 1 screws (6) 3 palm rest 2 display hinges (2) Removing the Palm Rest | 69
  • Dell XPS 14 L421X | Owners Manual - Page 70
    3 Slide and remove the palm rest from the display hinges and lift the palm rest away from the display. 3 2 1 1 display 3 palm rest 2 tabs (2) 70 | Removing the Palm Rest
  • Dell XPS 14 L421X | Owners Manual - Page 71
    4 to step 8 in "Replacing the Hard Drive" on page 39. 10 Replace the battery. See "Replacing the Battery" on page 26. 11 Replace the speakers. See "Replacing the Speakers" on page 24. 12 Follow the instructions from step 2 to step 6 in "Replacing the Base Cover" on page 15. Replacing the Palm Rest
  • Dell XPS 14 L421X | Owners Manual - Page 72
    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 beneath the system
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Dell XPS 14
Owner’s Manual
Computer model: XPS L421X
Regulatory model: P30G
Regulatory type: P30G001