beautypg.com

Intel WiFi Link 5100 User Manual

Page 19

background image

Intel

®

5100 Memory Controller Hub Chipset for Communications, Embedded, and Storage Applications

July 2008

TDG

Order Number: 318676-003US

19

Intel

®

5100 MCH Chipset

2. Place the thermocouple wire inside the groove letting the exposed wire and bead

extend about 3.2 mm (0.125") past the end of the groove. Secure it with Kapton

tape (

Figure 9

).

3. Lift the wire at the middle of groove with tweezers and bend the front of the wire to

place the thermocouple in the channel ensuring that the tip is in contact with the

end of the channel grooved in the IHS (

Figure 10

A and B).

4. Place the MCH under the microscope unit (similar to the one used in

Figure 13

) to

continue with the process. It is also recommended to use a fixture to help hold the

unit in place for the rest of the attach process.

5. Press the wire down about 6 mm (0.125") from the thermocouple bead using the

tweezers. Look in the microscope to perform this task. Place a piece of Kapton tape

to hold the wire inside the groove (

Figure 12

). Refer to

Figure 11

for detailed bead

placement.

6. Using the micromanipulator, place the needle near the end of groove on top of the

thermocouple. Using the X, Y, and Z axes on the arm, place the tip of the needle on

top of the thermocouple bead. Press down until the bead is seated at the end of the

groove on top of the step (see

Figure 11

and

Figure 12

).

7. Measure resistance from thermocouple end wires (hold both wires to a DMM probe)

to the IHS surface. This should be the same value as measured during the

thermocouple conditioning. See

Section 5.1.4

, step

2.

, and

Figure 13

.

8. Place a small amount of Locite* 498* Super Bonder* adhesive in the groove where

the bead is installed. Using a fine point device, spread the adhesive in the groove

around the needle, the thermocouple bead, and the thermocouple wires already

installed in the groove during step

5.

Be careful not to move the thermocouple

bead during this step (

Figure 14

).

Figure 9.

Securing Thermocouple Wires with Kapton Tape Prior to Attach