User`s guide

Clarity Visual Systems
November 1998
16
Alignment Procedure in Detail
Read through all the detailed parts of each numbered step before starting it.
1. Remove the screens from all
the display units
.
Look down on the top of the screen and locate the two
retaining screws. Remove these screws, using the
5/64-inch Allen hex wrench, and set them aside.
Grab the sides of the screen, or use the finger holes,
and lift it up about half an inch (one centimeter), and
remove it from the Adapter Plate. Set it aside.
2. Build the video wall.
Assemble the lower row first. Line up the legs for the
bottom row as straight as possible. Insert a ¼” X 2
½” bolt through the holes as shown in Figure 1.
Tighten a nut securely on this bolt, but not so tight
as to bend the legs. Secure the legs to the floor
using the tapped 5/16-18 holes in the front and rear
of the legs when stacking more than two units high
or use the optional BAS-520 base to secure the
WN-5220-S.
Stack the next higher row. Sliding the legs of each
display into the mating sockets of the display in the
first (lower) row.
Insert a bolt (supplied). Insert a bolt through the hole
in side wall of the lower unit and into each leg of the
unit above. Tighten a nut on this bolt to lock the
units together. See Figure 1 above.
Continue with subsequent rows of displays. Lock each
display to the adjacent displays after the row above
it (if any) has been installed
For added stability, use the tapped holes in the rear of
the legs of the upper units to fasten to a solid
support, such as a structural wall. The threaded
inserts in each leg are female 5/16-18 UNC.
Check that all displays in the video wall are locked
together.
3. Start with the display unit in the
center of the bottom row and
align its Adapter Plate. If the
bottom row has an even
number of display units,
choose either one. (This step
can be done before the wall is
built, if necessary.)
Look at the sides of the Adapter Frame. (See Figure
3, below.) Starting at the top edge and moving down
you will see a large Locking Screw, a pointed
Alignment Bolt, and an Alignment Hole. Near the
middle of each side is a threaded hole for the
Alignment Tool’s spring-loaded screws. (Do not
attach the Alignment Tool yet.) At the bottom of the
side notice the Alignment Hole, the Alignment Bolt,
and the Locking Screw.
Check to see that the two bottom Locking Screws are
tight.
Measure the opening diagonally, from corner to corner
in both directions, and compare the results. Be sure
to measure from exactly the same points each time.
An accuracy of 1/32nd inch (0.8 mm) is sufficient for
most applications, but the more accurately you can
measure this, particularly in the bottom center unit,
the better the video wall will be aligned and the
better the picture will look.
If the two measurements are the same, you may go
on to Ste
p
4. If the two measurements are not the