Cisco Nexus 7000 Series Manual Petunjuk Penggantian - Halaman 11

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Replacing the Chassis Blower

The blower is located at the bottom of the chassis interior. (See .) Two air ducts on the rear of the

blower, shown shaded in the illustration, ﬁt snugly into the two cutouts in the backplane. The blower

is secured to the backplane with three large captive screws, which are shown in Figure 6. The captive

screws on most blowers are 3-mm center-hex Allen-head screws, but the earliest chassis shipped

used Phillips-head screws. A 3-mm T-handle driver with a long (9-inch) handle is shipped with the

spare blower.

Although the far left captive screw on the blower is slightly obscured from view by the left lip of the

chassis and the left blower air duct, an access hole in the lip of the chassis provides access to this

screw. By inserting the T-handle driver (or screwdriver) straight into the access hole, you should be

able to ﬁnd the screw without any trouble. However, if you do have trouble ﬁnding the screw, and if

the lighting around the chassis is poor, you may need a ﬂashlight to locate the screw and position the

driver correctly.

Warning

AC units; disconnect the power at the circuit breaker on DC units. (For translations of this safety

warning, refer to the section "Power Supply Disconnection Warning" on page 16.)

Note

Warning

the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that

services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of

the circuit breaker in the OFF position. (For translations of this safety warning, refer to the section

"DC Power Disconnection Warning" on page 17.)

Figure 6

Before working on a chassis or working near power supplies, unplug the power cord on

The following warning is for units equipped with a DC-input power supply.

Before performing any of the following procedures, ensure that power is removed from

Chassis Blower

Purple (+24V)

Captive Allen-head screws

Cisco 7000 and Cisco 7507 Air Filter and Chassis Blower Replacement Instructions

Blower power

connection

Black (ground)

Blower

Replacing the Chassis Blower