Installing The Xpresschannel In The Rack - Overland Data DLT LibraryXpress Series Service Manual

9. Note: This step should be performed by two people. In front of the rack, lift the
module to its installed height. Engage the inner slides mounted on the module with
the intermediate slides protruding from the rack, and slide the module toward the
rack until the inner slide lock engages the intermediate slide. This leaves the entire
module protruding from the rack, locked in position, supported by slides.
10. Press inward (toward the module) on each of the inner slide locks to permit the
intermediate slides to move toward the rack.
11. Slide the module in and out several times, ensuring that the inner and outer slide
locks engage, and that the module does not bind against the slides. If other modules
are in place, ensure that the module does not bind against an adjacent module, and
that clearance between modules is evenly divided between top and bottom.
12. If binding occurs, loosen the four screws that secure the slides to the front rails and
the four screws that secure the slides to the rear rails, reposition the slides, then
retighten the screws.
13. If necessary, repeat steps 11 and 12 until the module does not bind against the slides
or against adjacent modules.
14. Install a clip nut on each front rail at the height of the captive screws on the front
panel of the module.
15. Slide the module into the rack until the captive screws just begin to engage, then
tighten the captive screws to fully seat the module. Note: Do not slam the module
against the rack. Doing so can dislodge the clip nuts.
16. Repeat this procedure for each of the modules to be mounted in the rack.
17. Loosen the captive screws of all modules except the top and bottom modules, and
pull them out so that the front panels are approximately one inch from the rails.
18. Go on to the section on installing the XpressChannel.

Installing the XpressChannel in the Rack

1. If you have not previously done so, install the angle brackets on the rack slide
extensions of the top and bottom modules, using one 10-32 screw and an L-shaped
nut plate for each angle bracket. The L-shaped nut plates should hang from the top
of the slide extensions on the outside. Place the angle brackets so the front edge of
the vertical part is 15/16" behind the rear edge of the slide body, as shown in the
inset in Figure 2-12.
2. Referring to Figure 2-12, position the XpressChannel against the back of the
installed modules so that the support braces rest on the previously installed angle
brackets. Install an M4 x 20 mm screw and washer through the rear hole in each
angle bracket into the support braces. Do not tighten.
3. Look closely at the right flange of the XpressChannel (left side as viewed from the
rear of the rack) as shown in the inset in Figure 2-12. At the top module, position
the XpressChannel horizontally so that the edge of the flange fits exactly into the
slot on the rear of the chassis of the top and bottom modules.
Chapter 2 - Installation 27