Avid Technology Milan MLN-192, Руководство по установке

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MLN-192 Option Card Installation 13
Appendix A: Brackets
The MLN-192 Card package includes one Back Bracket and one
Option Card Bracket. These newer brackets are pre-installed in
all recently manufactured E6L engines. If you have an older E6L
engine that does not yet have these newer brackets, follow the in-
structions below.
Back Bracket
If your E6L-192 or E6L-144 Engine Core has the
original Back Bracket (shown below), you must replace the old
bracket with the included new Back Bracket. Note that the origi-
nal bracket has only three receivers for card-retaining thumb-
screws, while the new bracket has five.
Option Card Bracket
If your E6L-192 or E6L-144 Engine Core
has the original Option Card bracket, you must replace the origi-
nal bracket with the new Option Card Bracket included with the
MLN-192 Card.
Replace the Back Bracket
To remove the old bracket:
1
Make sure you have removed all AVB-192 Network Cards as
instructed previously.
2
Using a #2 Phillips screwdriver, remove the two fasteners
from the top of the back bracket. Set the fasteners aside (you
will use them to secure the new bracket).
3
Using a #2 Phillips screwdriver, loosen the two captive thumb-
screws that secure the back bracket to the interior wall of the
engine core.
Before loosening the second thumbscrew be sure to hold onto
the bracket with your other hand to prevent it from falling onto
other components.
4
Remove the old bracket (it can be discarded).
To install the new back bracket:
1
Orient the bracket in position as shown, making sure its upper
tabs are under the upper tabs on the chassis.
Use your fingers to start the upper captive thumbscrew,
enough to hold the new bracket in place.
2
Using a #2 Phillips screwdriver, align and insert the two cap-
tive thumbscrews on the back bracket into their threaded re-
ceivers on the inner wall of the core.
For the lower thumbscrew, a 12-inch long #2 Phillips screw-
driver is recommended.
Figure 52. Newer Back Bracket (left) and Option Card Bracket (right)
Figure 53. Original back bracket
Figure 54. Top fasteners to remove from the original back bracket
Figure 55. Removing back bracket captive thumbscrews
Figure 56. Positioning the new back bracket
Figure 57. Securing the new back bracket