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CAUTION: The microprocessor SEC cartridge/heat sink assembly can get extremely hot. Be sure that the assembly has had
sufficient time to cool before you touch it.
CAUTION: Use a wrist grounding strap as explained in
NOTE: Dell recommends that only a technically knowledgeable person perform this procedure.
To replace a microprocessor, perform the following steps:
1.
Remove the computer
cover.
2. Locate the microprocessor socket on the system board.
3. Unplug the fan power connector on the system board
4. Remove the screws securing the fan to the top of the heat sink assembly. Then remove the fan.
5. Remove the metal clip that secures the heat sink to the microprocessor socket. Then remove the heat sink from the microprocessor chip.
6. Press down on the folded part of the clip with a small screwdriver to release the clip (see Figure 27).
The securing clip hooks over tabs on the sides of the socket.
NOTICE: Be careful not to bend any of the pins when removing the microprocessor chip from its socket. Bending the pins can
permanently damage the microprocessor chip.
7. Remove the microprocessor chip from the socket.
Your microprocessor socket is a zero insertion force (ZIF) socket with a lever-type handle that secures the chip in, or releases it from, the
socket.
To remove the chip, pull the microprocessor-socket release lever straight out until the chip is released (see Figure 28). Then remove the chip
from the socket. Leave the release lever extended so that the socket is ready for the new microprocessor.
Figure 28. Microprocessor Removal
CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer.
NOTICE: Positioning the microprocessor chip incorrectly in the socket can permanently damage the chip and the computer when
you turn on the system.
NOTICE: Be careful not to bend any of the pins when unpacking the microprocessor. Bending the pins can permanently damage
the microprocessor.
8. Unpack the new microprocessor.
If any of the pins on the chip appear to be bent, see your Installation and Troubleshooting Guide for instructions on obtaining technical
assistance.
9. Align the pin-1 corner of the microprocessor chip with the pin-1 corner of the microprocessor socket (see
NOTE: Identifying the pin-1 corners is critical to positioning the chip correctly.
The pin-1 corner of the microprocessor is the squared off corner (see
10. Install the microprocessor chip in the socket (see
If the release lever on the microprocessor socket is not all the way out, move it to that position now.
With the pin-1 corners of the chip and socket aligned, align the pins on the chip with the holes in the socket. Set the chip lightly in the socket
and make sure all pins are headed into the correct holes. Because your system uses a ZIF microprocessor socket, there is no need to use
force (which could bend the pins if the chip is misaligned). When the chip is positioned correctly, it should seat itself in the socket with
"Precautionary
1 Microprocessor chip
2 Release lever
3 Microprocessor socket
Figure
Figure
29).
Measures."
Figure
29).
29).
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