Service Manual

Replacing the I/O-board interposers
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.
Procedure
1. Using the alignment posts, place the two I/O-board interposers on the system board.
2. Align the screw holes on the I/O-board cable with the screw holes on the I/O-board interposers and adhere the I/O-board cable to
the fans.
NOTE:
When installing the I/O board cable, align and connect the I/O board end to the I/O board side and the system
board end to the system board side.
CAUTION: Wrong alignment of the cable might cause damage to the connectors.
3. Replace the four screws (M1.6x5.5) that secure the I/O-board cable to the system board.
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Replacing the I/O-board interposers 19