User's Manual

Chapter 3 Installation
3.8.1 HPA Compartment Frame Pre-installation
Several components mounted on the HPA compartment frame
backplane must be loosened prior to installing the HPA’s. Not doing so
could damage a number of blind mate connectors.
During product shipment, shear forces may cause some components mounted to the HPA
compartment frame backplane to become slightly misaligned. It is important that these
components are loosened prior to installing the HPA’s. Loosening these components allows
the HPA’s to slide into the HPA compartment frame with fewer restrictions.
Please refer to Figure 3-28
for the locations of the components that should be loosened.
1. Ensure that the backplane components are installed properly and are free from
physical damage.
2. Loosen the four (4) 8-32 socket head cap screws which secure the top 4-way
combiner to the backplane (Figure 3-28
, item 1, item 2 and item 3).
3. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 3 input
adapter to the backplane (Figure 3-28
, item 4).
4. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 2 input
adapter to the backplane (Figure 3-28
, item not visible).
5. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 1 input
adapter to the backplane (Figure 3-28
, item not visible).
6. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 0 input
adapter to the backplane (Figure 3-28
, item 5).
7. Loosen the four (4) 8-32 socket head cap screws which secure the bottom 4-way
combiner to the backplane (Figure 3-28
, item 6, item 7 and item 8).
8. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 7 input
adapter to the backplane (Figure 3-28
, item 9).
9. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 6 input
adapter to the backplane (Figure 3-28
, item not visible).
10. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 5 input
adapter to the backplane (Figure 3-28
, item not visible).
11. Loosen the two (2) 8-32 socket head cap screws which secure the HPA 4 input
adapter to the backplane (Figure 3-28
, item 10).
Once the HPA compartment frame backplane components have been loosened, the installer
can proceed to install the HPA’s.
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