Dell Inspiron 3470, Service Manual

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Removing the system board
WARNING: 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.
Topics:
• Prerequisites
• Procedure
Prerequisites
1 Remove the computer cover .
2 Remove the front bezel .
3 Follow the procedure from step 1 to step 6 in “ Removing the optical drive ”.
4 Remove the memory modules .
5 Remove the wireless card .
6 Remove the thermal-cooling assembly .
7 Remove the processor .
Procedure
NOTE: Note the routing of all cables as you remove them so that you can reroute them correctly after you replace the system
board. For information on system board connectors, see “ System-board components ".
1 Remove the screw (#6-32xL6.35) that secures the front-I/O bracket to the chassis.
2 Swivel open the front-I/O bracket away from the chassis.
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