Extron electronic HSA 822 user manual Maintenance and Modifications, Replacing an AAP

Maintenance and Modifications

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.
			Ensure that the edges of the AAP panels do not
	CAUTION
			scratch the finished surface of the top panel flange
			or the furniture in which the HSA 822 is installed
			when removing the panels.

Remove two screws ea. side.

INPUT
SELECT	COMPUTER	O
	AUDI

Remove panel.

HSA822

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
AAP Panel
					Cable
S UT				HSA
INP					822
ELE		A
CT CO	MP		UD	IO
	UTER

RGB 580xi SI AAP

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.

3-2 HSA 822 Hideaway® Enclosure • Maintenance and Modifications HSA 822 Hideaway® Enclosure • Maintenance and Modifications 3-3