Daktronics AB-1600-1.5,2.5 - Manual (Page 21)

Mechanical Installation 2-5
Submit any plans for filtering air in an enclosed display to the Daktronics engineering staff for
evaluation and approval or the warranty will be null and void.
2.6 Verifying Correct Lens and Module Position
The final steps of mechanical installation involve verifying the proper positioning of all lenses upon
their respective lens/reflector assemblies and that all modules engage fully into the cabinet.
Look down the rows of louvers from either end of the display and secure all lenses properly. Lenses
not secured properly are easily noticeable as the lens removal tab, or the lens itself, will not be in
alignment with the other lenses or lens removal tabs of that row.
Refer to Figure 28 and the following steps to return a lens to its correct position.
1. First, insert the bottom indexing tabs into the slots. There is one indexing tab on each bottom
corner of the lens.
2. While gently pushing the above louver upward, grab the lens tab and push the top of the lens
behind and under the louver offset. Only push the louver upward enough to allow the lens to snap
into position behind the offset.
3. Release the louver and verify the lens aligns with others in the row.
Also, ensure that the rows of louvers are in proper alignment. If any rows seem out of position, this
may indicate the one, or both, sides of the lens/reflector assembly do not engage fully into the cabinet.
If this is the case, a firm push to both sides of the module at the same time should snap the module into
place.
Figure 28: Correct Lens Position