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Installation and Service Guide: Printer Controller EB-34
Replacing Parts
3
Place the CPU in the socket (see
The CPU and the socket are keyed to ensure correct installation. The notches on the edges of the CPU correspond
with the two small posts inside the socket. Align the yellow triangle on the CPU with the yellow arrow stenciled on
the motherboard next to the socket. Do not force the CPU.
Figure 25:
Locating the flat corner of the CPU socket
4
Close the load plate.
5
Lower the socket lever and place it in the locked position under the retention post.
6
Prepare the CPU cooling assembly for installation.
•
Make sure that the motherboard is placed on a padded, antistatic work surface.
•
Apply the fresh thermal compound square, as described in step 1 on page 60.
•
Align the cooling assembly so that when it is installed, the fan cable easily reaches the CPU fan power connector
CPUFAN on the motherboard.
7
Place the cooling assembly on the CPU.
•
Make sure that the thermal pad on the underside of the heatsink is positioned on top of the CPU.
•
Align the four screws with the four screw posts.
•
Tighten the screws. Partially tighten all the screws before tightening any one screw all the way.
8
Connect the CPU fan cable to the motherboard connector CPUFAN.
The cable connector is keyed to fit only one way. Make sure that the connector on the cable is securely attached to
connector CPUFAN on the motherboard.
1
Flat corner of socket
Caution:
Be sure to remove any protective material that may be covering the surface of the thermal pad.
Otherwise, the CPU may overheat.
1