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Maintaining the LightStream 1010 ATM Switch 4-23
Replacing the Chassis Fan Assembly
Step 3 Push the fan assembly into the chassis until the screws meet the chassis.
Step 4 Tighten each of the two captive installation screws.
Checking the Installation
To verify that the new fan assembly is installed correctly, you should immediately hear it
operating. If you do not hear it, turn off the system power and ensure that the fan assembly
is completely inserted in the chassis and the faceplate is flush with the switch back panel.
If after several attempts the fan assembly does not operate, or if you experience trouble with
the installation (for instance, if the captive installation screws do not align with the
backplane holes), contact a customer service representative for assistance.