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Install New Small Fan
1. Reverse the removal procedure for replacement. Place the new fan in the same location as the old
fan, next to the chassis.
2. The fan needs to have the proper orientation for B1W1 to be connected to the CPU/Motherboard.
Refer to Figure 2, "Small Fan Assembly".
NOTE
When inserting the new plastic rivets, the sheath must be fully seated in the fan assembly
before the plunger can be depressed.
NOTE
Later models use screw, 0515-0374 (quantity 4) in place of rivets to secure the fan to chassis.
Torque to 9 in-lbs.
Verify Fan Operation
1. Once the fan has been installed, connect the power cord to the signal generator.
2. Turn on the signal generator and verify that the fan operates.
Reassemble the Instrument
1. Replace the cover-top chassis and secure it with the 11 screws. Torque to 9 in-lbs.
2. Slide the instrument cover (item 6) on from back of the signal generator. Refer to Figure 1,
"Instrument Cover and Associated Parts".
3. Replace the four rear feet (item 4) onto the signal generator by using the four screws (item 5) that
secure them. Torque the rear feet screws to 21 in-lbs.
4. Replace the four bottom feet (item 3).
5. Replace the two strap handles (item 1) onto each side of the signal generator using two screws
(item 2) on each handle. Torque the strap handle screws to 21 in-lbs.
Verify Instrument Operation
1. Verify instrument operation by performing the "Functionality Check" located on page 4.
Installation Note E4400-90344
7
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