Dell OptiPlex GX400, Service Manual

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Computer Cover
Dell™ OptiPlex™ GX400 Service Manual
Removing the Computer Cover
Replacing the Computer Cover
Removing the Computer Cover
1. Turn off the computer and peripherals, and disconnect them from their electrical outlets.
2. If installed, remove the padlock from the padlock ring on the back panel.
3. Remove the computer cover.
a. Face the back of the computer and slide the outer padlock ring to the left to unlock the cover release mechanism.
Cover Release Mechanism
b. Press the cover release button located at the bottom-left corner of the front panel.
c. Rotate the bottom of the cover outward, away from the chassis.
d. Lift the cover away from the chassis.
e. Lay the computer down on its right side before you begin working inside the chassis.
Replacing the Computer Cover
1. Check all cable connections and fold cables out of the way so that they do not catch on the computer cover. Ensure that cables are not routed over the drive
cage — they will prevent the cover from closing properly.
2. Ensure that no tools or extra parts (including screws) are left inside the computer chassis.
3. Replace the computer cover.
a. Hold the cover at a slight angle. While aligning the top of the cover with the top of the chassis, insert the three hooks on the cover into the three recessed
slots on the computer chassis.
CAUTION: Before you perform this procedure, see " Precautionary Measures ."