Dell DimensionL Series Reference page 25

To install a DIMM, perform the following steps:
1. Remove the computer cover.
2. Rotate the power supply.
3. Press outward on the securing clips at each end of the DIMM socket to release the clips (step 1 in the preceding figure).
4. Align the cutouts on the edge connector of the DIMM with the crossbars in the central groove of the socket (step 2 in the preceding figure).
5. Insert the DIMM straight down into the socket, making sure that it fits into the vertical guides in the clips at each end of the socket (step 3 in
the preceding figure).
6. Press firmly until the DIMM snaps into place.
NOTICE: Do not press near the middle of the DIMM. Doing so could break the module.
If you have inserted the DIMM correctly, the tabs on the securing clips will snap into the cutouts at each end of the DIMM.
Heat Sink
The heat sink in your system will be one of those pictured in the preceding figure. To remove and replace the microprocessor and heat sink,
perform the following steps:
1. Remove the computer cover.
2. Rotate the power supply.
3. Locate the microprocessor socket on the
4. Release the metal clip that secures the heat sink and fan assembly to the microprocessor socket. Then remove the heat sink and fan
assembly from the microprocessor chip.
5. Disconnect the fan from the system board.
6. Remove and replace the microprocessor chip
7. Unpack the heat sink and fan assembly included in your upgrade kit.
NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
8. Peel the release liner from the adhesive tape that is attached to the bottom of the heat sink and fan assembly.
1 Securing clips (2)
2 Cutout
1 Heat sink and fan assembly
2 Heat-sink securing clip
3 Microprocessor
4 Microprocessor socket
5 Heat-sink securing tab
system board.
from the socket.