Dell OptiPlex GX745 User'smanual page 137

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Dell™ OptiPlex™ 745 User's Guide
I/O Panel
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
2. Remove the optical drive and floppy drive from the drive bays, if installed (see Drives).
3. Remove the processor heatsink (see Processor).
4. 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.
5. Disconnect all cables that are connected to the I/O panel that you can access without removing the I/O panel.
Note the routing of the cables as you lay them aside, so that you can replace them correctly.
1 fan cable connector
2 air temperature sensor
cable
3 I/O cable connector
4 screw
5 I/O panel
6. From inside the computer cover, remove the mounting screw that secures the I/O panel to the computer.
7. Ease the I/O panel back and forth to release its circular tabs from the two holes in the chassis that secure it.
8. Remove any remaining cables; note the routing of all cables, so that you can reroute them
9. Remove the I/O panel from the computer.
Begin.