Dell XPS 15 9575 2-in-1 XPS 15 2-in-1 Service Manual - Page 44

Removing the system board, Prerequisites, Procedure

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25 Removing the system board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. NOTE: Your computer's Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. NOTE: Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program. You must make the appropriate changes again 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 the cables correctly after you replace the system board. Prerequisites 1. Remove the base cover. 2. Remove the solid-state drive. 3. Remove the I/O-board interposers. 4. Remove the battery. 5. Remove the heat sink. 6. Remove the fans. Procedure 1. Open the latch and disconnect the camera cable from the system board. 2. Peel the tape that secures the display-cable bracket to the system board. 3. Remove the two screws (M1.6x1.8) that secure the display-cable bracket to the system board and lift the bracket off the system board. 4. Using the pull tab, disconnect the display cable from the system board. 5. Open the latch and disconnect the keyboard-back light cable from the system board. 6. Open the latch and disconnect the fingerprint-reader cable from the system board. CAUTION: Removing the coin-cell battery resets the BIOS setup program's settings to default. It is recommended that you note the BIOS setup program's settings before removing the coin-cell battery. 7. Disconnect the coin-cell battery cable from the system board. 44 Removing the system board

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Removing the system board
NOTE:
Before working inside your computer, read the safety information that shipped with your computer and follow
the steps in
Before working inside your computer
. After working inside your computer, follow the instructions in
After
working inside your computer
. For more safety best practices, see the Regulatory Compliance home page at
www.dell.com/regulatory_compliance
.
NOTE:
Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup
program after you replace the system board.
NOTE:
Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program. You
must make the appropriate changes again 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 the cables correctly after you replace the system board.
Prerequisites
1.
Remove the
base cover
.
2.
Remove the
solid-state drive
.
3.
Remove the
I/O-board interposers
.
4.
Remove the
battery
.
5.
Remove the
heat sink
.
6.
Remove the
fans
.
Procedure
1.
Open the latch and disconnect the camera cable from the system board.
2.
Peel the tape that secures the display-cable bracket to the system board.
3.
Remove the two screws (M1.6x1.8) that secure the display-cable bracket to the system board and lift the bracket off the system
board.
4.
Using the pull tab, disconnect the display cable from the system board.
5.
Open the latch and disconnect the keyboard-back light cable from the system board.
6.
Open the latch and disconnect the fingerprint-reader cable from the system board.
CAUTION:
Removing the coin-cell battery resets the BIOS setup program’s settings to default. It is recommended
that you note the BIOS setup program’s settings before removing the coin-cell battery.
7.
Disconnect the coin-cell battery cable from the system board.
25
44
Removing the system board