Dell OptiPlex GX260 Series System User's Manual page 106

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Microprocessor
Dell™ OptiPlex™ GX260 Systems User's Guide
CAUTION: Before you begin any of the procedures in this section, follow the steps in
Instructions."
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before
opening the cover.
1. Perform an orderly computer shutdown using the operating system menu.
NOTICE: To disconnect a network cable, first unplug the cable from your computer, and then unplug it from the
network wall jack.
2. Turn off any attached devices and disconnect them from their electrical outlets.
3. Disconnect the computer power cable from the wall outlet, and then press the power button to ground the system
board.
4. Remove the computer stand, if it is attached.
5. Open the computer cover.
6. Disconnect the cooling fan power cable from the
7. Disconnect the 12-volt power cable from the
NOTICE: Before you remove the heat sink, gently rock the heat sink and then slightly twist it as you lift it from the
system board.
8. Remove the heat sink/blower assembly.
a. The heat sink is attached to the blower. Press and lower the green lever on the retention mechanism until it is
parallel to the system board.
b. Gently rock the heat sink and then slightly twist it as you lift it from the microprocessor.
NOTICE:
Lay the heat sink down with the thermal solution facing upward.
Heat Sink/Blower Assembly Removal
FAN connector on the system board.
12VPOWER connector on the system board.
"CAUTION: Safety