5-63
Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter5 Installing the Cisco MGX Switch or Gateway
Installing the MGX 8950 Switch
Step2 Position the AC power supply tray, which occupies 3 RUs of space, at the bottom of the configuration
or rack.
Step3 Use four mounting screws and a Phillips-head screwdriver to bolt the AC power supply tray in the rack.
See Figure5-39 for the correct placement of the AC power supply tray.
Step4 While you secure the front of the AC power supply tray with the front screw, hold the adjacent front
flange of the tray slightly to the outside so that the hinged door can freely open and close. (See “Front
flange” in Figure5-39.) The space betw een the right-angle edge of the flange and the edge of the hinged
door should be approximately 0.030 inch (about the thickn ess of a thumbnail).
Figure5-39 AC Power Supply Tray—Front View
Step5 If you are installing the AC power supply tray in a 19-inch cabinet, attac h the rear mounting brackets to
the rack and use screws to secure the tray to the rear-mounting brackets.
Step6 Repeat Step 1 through Step 5 to install a second AC power supply tray.
Reinstall the AC Power Supplies
Complete the following steps to reinstall power supplies that you have removed.
Caution Do not use a power screwdriver on captive screws.
Step1 Slide each AC power supply into the AC power supply tray. You will encounter a slight resistance as you
slide the AC power supply; apply even pressure to ensure full connector mating.
Step2 Secure each AC power supply to the tray by tightening the captive screw at the front bottom of each AC
power supply. For slots without a power supply, the hinged door on the tray should already have a
removable blank panel.
Step3 Rotate the hinged door and tighten the captive retainer screw in th e center of the hinged door using a
flat-blade screwdriver.
Step4 Replace the air intake grille by putting the lower hooks over the hinged panel and then rotating the grille
until it snaps into place.
Step5 Repeat Step1 through Step 4 to reinstall the AC power supplies in a second AC power supply tray. Refer
to Table 3 -13 to verify that yo u have the number of power supplies needed for your system.
17672
1200W
DC
AC
1200W
DC
AC
1200W
DC
AC
1200W
DC
AC
Air intake grille Front flange
Blank panelRelease