Cisco 7000 and 7507 LED Board MAS-7KLED Инструкции по замене Руководство - Страница 2
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Product Overview
Product Overview
This section describes the top and bottom front chassis panels and the LED board.
Top and Bottom Front Chassis Panels
The top and bottom front chassis panels each comprise a plastic injected-molded bezel on a metal
frame. The top front panel covers the entire front chassis opening and attaches to the bottom of the
chassis frame with two captive screws. (See Figure 1)
Figure 1
Filter
(gray)
The lower section of the top front panel houses the air filter, which cleans intake air drawn in by the
blower. Three cutouts in the top of the panel contain semiopaque black plastic windows, through
which the three system
LEDs are visible when they are on. EMI shielding surrounds the entire outer edge of the top front
panel. The shielding acts as a spring, and compresses when you push the panel into the chassis to
keep the panel fitted tightly into the chassis opening.
The bottom front panel is vented and covers the lower area of the top front panel that houses the air
filter. The bottom front panel fits over the lower section of the top front panel and attaches to the
chassis with ball studs. You must remove the bottom front panel before you can remove the top front
panel. You can remove the bottom front panel while the system is operating to access or clean the
air filter, but always turn system power off before removing the top front panel.
The chassis panels provide shielding against electromagnetic interference (EMI) and work with the
blower and air filter to maintain a constant flow of cooling air through the chassis. Replace the
chassis panels if they become warped or broken.
2 Cisco 7000 and Cisco 7507 LED Board Replacement Instructions
Chassis Top Front Panel (Shown with Bottom Front Panel Removed)
Captive screws
Frame