Extron electronic HSA 822 - Manual (Page 15)

Maintenance and Modifications
HSA 822 Hideaway ® Enclosure • Maintenance and Modifications HSA 822 Hideaway ® Enclosure • Maintenance and Modifications 3-2
The HSA 822 surface mount enclosures can be modified in the
future to replace an AAP. The most probable corrective
maintenance procedures required are leveling the top surface
and replacing the gas lift. Most of the maintenance procedures
require removing the surface mount enclosure from the table.
Replacing an AAP
Replace one or more AAPs as follows:
Ensure that AC power is disconnected before
servicing the HSA unit.
1 . On the underside of the clamshell and in the enclosure, cut
the tie wraps that route the AAP cables out of the way.
2 . Remove the top and bottom screws on the right and left
sides of the AAP panel (figure 3-1). Retain the screws. Lift
the panel away from the enclosure as far as the connected
cables allow and then allow the panel to dangle,
supported by its connected cables.
The center screws on each side of the AAP panel do not
fasten the AAP panel in place. They secure the
AC power outlet.
CAUTION Ensure that the edges of the AAP panels do not
scratch the finished surface of the top panel flange
or the furniture in which the HSA 822 is installed
when removing the panels.
Remove panel.
Remove two
screws ea. side.
HSA 822
COMPUTER INPUT SELECT AU DIO
Figure 3-1 — Removing the AAP panel
3 . Disconnect any cables from the rear of the AAPs that are
being replaced. If a cable is no longer required in your
system, carefully pull the cable through and out the
bottom of the surface mount enclosure and the clamshell.
4 . Remove the AAP(s) that you no longer want from the AAP
panel by unscrewing the nuts on the rear of the AAP panel
that secure the AAPs in place (figure 3-2).
#4-40 Nut w/ Captive
Washer
Cable
AAP Panel
HSA 822
RGB 580xi SI AAP
CO MPU TER
INP UT SEL ECT AU DIO
Figure 3-2 — Mounting an AAP device
5. Cable the rear of the AAPs to be installed before attaching
the AAPs to the enclosure. Route the cables through the
hole in the underside of the surface mount enclosure and
connect them to the rear of the AAPs. If applicable, refer
to the cabling information in the documentation for the
AAP.
6 . Insert each AAP’s screws through the holes in the AAP
opening of the AAP panel. Secure each AAP to the panel
with the provided captive washers and #4-40 nuts.
7 . Replace the AAP panel in the surface mount enclosure and
secure them in place with the screws removed in step 2. If
you lose an AAP panel screw, four spare screws are stored
in the underside of the enclosure (see figure 2-6 on
page 2-10).
8 . To prevent wear and tear caused by cable movement,
secure the AAP cables underneath the table. See
page 2-12, Routing the AAP Cables.
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