Cisco Nexus 7000 Series Manuel d'instructions de remplacement - Page 12

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12Cisco 7000 Air Filter and Chassis Blower Replacement Instructions

Purple (+24V)

Blower

Figure 8

Blower Power Connector

Step 4:

Disconnect the blower's power connector from the backplane by pinching

the sides of the connector inward and pulling the connector out and away

from the backplane. Lay the connector and wiring on top of the blower to

keep it out of the way while you remove the blower.

Step 5:

Using the long T-handle driver or Phillips screwdriver, loosen each of the

three captive screws by turning them counterclockwise two full turns. Use

the access hole in the lower lip of the chassis to guide the driver straight into

the hole to the for left screw.

Step 6:

When all three screws are loosened, unscrew them completely from the

backplane. These captive screws are ﬁxed to the blower; do not attempt to

remove them completely.

Step 7:

Two air ducts on the blower extend into the two cutouts in the backplane (see

Figure 1). Grasp the blower with both hands and pull it outward (toward you

and away from the backplane) while gently rocking it slightly up and down,

and left to right, to free the blower ducts from the backplane.

Step 8:

If the blower does not budge, check the three screws and ensure that they are

free (they are ﬁxed to the blower, but they should spin freely).

Step 9:

Pull the blower outward using steady pressure and wiggling it until it is free

from the backplane.

Step 10:

Lift the blower out of the chassis and place it aside.

Step 11:

Do not replace the front chassis panels until you install a new blower. If the

system is inadvertently turned on without the blower installed, the internal

chassis components may overheat, which can result in severe equipment

damage.

Backplane

Blower power connection

Black (ground)