Dell XPS 14Z (L412z): System Board
System Board: Dell XPS 14Z (L412z)
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System Board
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: 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).
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.
CAUTION: Handle components and cards by their edges, and avoid touching pins
and contacts.
Removing the System Board
1
Follow the instructions in "Before You Begin" on page 7.
2
Remove any installed card or blank from the Media Card Reader.
3
Remove the base cover (see "Removing the Base Cover" on page 11).
4
Remove the battery (see "Removing the Battery" on page 15).
5
Remove the Mini-Card (see "Removing the Mini-Card" on page 21).
6
Remove the hard drive (see "Removing the Hard Drive" on page 25).
7
Remove the coin-cell battery (see "Removing the Coin-Cell Battery" on
page 29).
8
Remove the optical drive (see "Removing the Optical Drive" on page 31).
9
Remove the heat sink and fan (see "Removing the Heat Sink and Fan" on
page 41).
10
Gently peel off the keyboard-cable pull tab from the keyboard cable
connector on the system board.
System Board 45
11
Disconnect the speaker cable from the system-board connector.
12
Lift the connector latch and pull the pull-tab to disconnect the keyboard
cable, touch-pad cable, keyboard-backlight cable, and hall-sensor cable
from the system-board connectors.
1 speaker cable 2 hall-sensor cable
3 keyboard backlight cable 4 touch-pad cable
5 keyboard cable pull-tab
13
Gently peel off the tape from the network connector on the system board.
14
Lift the connector latch and pull the pull-tab to disconnect the power-
button board cable from the system-board connector.
15
Disconnect the display cable, ambient-light-sensor cable, and display-
converter board cable from the system-board connectors.
46 System Board
5
4
3
2
1
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1 tape 2 display cable connector
3 power-button board cable 4 display-converter board cable
connector
5 ambient-light-sensor cable
connector
16
Remove the five screws that secure the system board to the palm-rest
assembly.
17
Lift the system board off the palm-rest assembly.
18
Remove the memory module(s) (see "Removing the Memory Module(s)"
on page 17).
System Board 47
3
2
4
1
5
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1 system board 2 screws (5)
Replacing the System Board
1
Follow the instructions in "Before You Begin" on page 7.
2
Replace the memory module(s) (see "Replacing the Memory Module(s)"
on page 18).
3
Place the system board on the palm-rest assembly.
4
Replace the five screws that secure the system board to the palm-rest
assembly.
5
Slide the power-button board cable into the system-board connector and
press down on the connector latch to secure the cable.
6
Connect the display cable, ambient-light-sensor cable, and display-
converter board cable to the system-board connectors.
7
Adhere the tape over the network connector on the system board.
8
Connect the speaker cable to the system-board connector.
9
Slide the keyboard cable, touch-pad cable, keyboard-backlight cable, and
hall-sensor cable into the system board connectors and press down on the
connector latch to secure the cable.
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2
1
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10
Adhere the pull-tab on the keyboard cable over the keyboard cable
connector on the system board.
11
Replace the heat sink and fan (see "Replacing the Heat Sink and Fan" on
page 42).
12
Replace the optical drive (see "Replacing the Optical Drive" on page 33).
13
Replace the coin-cell battery (see "Replacing the Coin-Cell Battery" on
page 30).
14
Replace the hard drive (see "Replacing the Hard Drive" on page 28).
15
Replace the Mini-Card (see "Replacing the Mini-Card" on page 23).
16
Replace the battery (see "Replacing the Battery" on page 16).
17
Replace the base cover (see "Replacing the Base Cover" on page 12).
18
Replace any blank or card you removed from the Media Card Reader.
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.
19
Turn on the computer.
NOTE: After you have replaced the system board, enter the computer Service Tag
in the BIOS of the replacement system board.
20
Enter the Service Tag (see "Entering the Service Tag in the BIOS" on
page 49).
Entering the Service Tag in the BIOS
1
Ensure that the AC adapter is plugged in and that the main battery is
installed properly.
2
Turn on the computer.
3
Press <F2> during POST to enter the System Setup program.
4
Navigate to the Security tab and enter the Service Tag in the
Set Service
Ta g
field.
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50 System Board
