I/O Panel; Removing The I/O Panel - Dell OptiPlex 755 User Manual

I/O Panel

Removing the I/O Panel

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions located in the
Product Information Guide
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet before
removing the computer cover.
1 Follow the procedures in "Before You Begin" on page 21.
2 Remove the computer cover (see "Removing the Computer Cover" on page 168).
3 Remove the optical drive and floppy drive from the drive bays, if installed (see "Drives" on page 195).
4 Remove the hard drive (see "Removing a Hard Drive" on page 197).
5 Remove the processor heat sink (see "Processor" on page 213).
NOTE:
You'll also have to remove the heat sink base.
6 Remove the system board.
• Unscrew all retaining screws on the system board (see "Small Form Factor System Board Screws"
on page 310).
• Gently lift the system board out of the chassis.
7 Remove the front fan:
Press the tab that secures the fan to the interior base of the computer and lift the fan from the
computer; set the fan aside in the chassis.
8 Remove cables from the IO panel.
Note the routing of the cables as you lay them aside, so that you can replace them correctly.
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I/O Panel