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Assembly Replacement
B1 Small Fan Assembly
B1 Small Fan Assembly
Tools Required
• knife blade (or equivalent)
• long nose pliers
Removal
NOTE: It is best to attempt this procedure without removing the front panel assembly. If the front
panel assembly is removed, you will be required to perform time-consuming “Power Level
Accuracy” verification tests and adjustments.
1. Remove the instrument cover. (Refer to "Instrument Cover" in this chapter.)
2. Disconnect B1W1 from the motherboard (A14).
3. Remove the four plastic rivets (item 1) that attach the fan as
sembly (B1) to the instrument chassis. Use a knife blade
(or equivalent) to pry up the head of the plunger portion of the rivet. Once the head of the plunger is adequately
raised, use a pair of long nose pliers to remove the rivet. Be careful not to damage the rivets with the blade.
NOTE: The plastic rivets consist of two pieces: a plunger and a sheath. Ensure both parts are
removed.
4. Remove the fan assembly.
Replacement
1. Reverse the removal procedure. When reinserting the plastic rivets, the sheath must be fully seated in the fan
assembly before the plunger can be depressed.
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