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WN-5230-S VideoWall User’s Guide
17
For an image that is way out of alignment and that needs major adjustment, start with
everything in a “normal” position:
• If the screen is Ultra-Thin Mullion, remove the screen and check that
all the pointed alignment bolts are at the same distance. Put the
shipping shim behind each bolt and tighten the bolt to it. (Later, when
building a wall, make sure that the main chassis of the cubes are
aligned. It is a mistake to move the screens in and out a great
distance with the pointed alignment bolts to compensate for main
chassis that are not even with each other. Moving these bolts a lot will
change the image size, because the lens-to-screen distance
changes.)
• Each corner of the optical engine mount should start at the same
distance out. Factory default is 3 cm, but any distance near this
amount will do a good job. Make a block of wood that is 3 cm thick
and use it as a gauge at the four corners of the metal engine mount.
Then adjust S1, 2, 3, and 4 to make the engine mount just touch the
block.
• Adjust the lens screws, LS1 and LS2, so they are part way in. As
these screws turn out, eventually they reach a point where the spring
no longer pushes the lens toward the screw. Have the lens in a
middle position, so that the spring is pressed some, but not as much
as half way.
Adjusting the Image
There are four nuts on the engine mounting plate,
S1, S2, S3, and S4. Adjust these in pairs and turn
them equal amounts.
Figure 2. Diagram of optical engine,
mirror and screen as seen from the side.
Figure 1. Optical engine, seen
from rear, showing location of
four “S” adjustment screws.