Dell Precision Tower 3420 - Removing the Input;Output (I;O) Panel; Installing the Input;Output (I;O) Panel; Removing the System Fan

Removing the Input/Output (I/O) panel
1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. front bezel
3. To remove the I/O panel:
a. Remove the screw that secures the I/O panel to the chassis [1].
b. Slide the I/O panel to the right and remove it from the computer [2].
Installing the Input/Output (I/O) panel
1. Insert the I/O panel on the chassis and slide it until it clicks into place.
2. Tighten the screws to secure the I/O panel to the chassis.
3. Install the:
a. front bezel
b. cover
4. Follow the procedure in After Working Inside Your Computer.
Removing the system fan
1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. front bezel
c. hard drive
d. optical drive
3. To remove the system fan:
a. Disconnect the system fan cable from the system board [1].
b. Slide the fan grommets toward the slot on the back wall [2].
c. Lift the fan away from the computer [3].
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