2-20 IntelliTouch/SecureTouch Guide
When you have a good feel for the placement of the touchscreen, clean the
back side of the touchscreen and the face of the CRT again. Avoid all contact
between the cleaning solution and the mo unting materials as the cleaner may
cause the mounting materials to e ventually release from the glas s. Remove
all lint with a brush or compressed air. Remove the liner from the adhesive
tape and align the touchscreen on the display. The thicker foam tape will
keep the adhesive tape away from the CRT until you are ready to adhere the
touchscreen to the display. Now press the touchscreen firmly against the
CRT.
If you must remove the touchscreen from the CRT, cut the adhesive tape
away with a sharp thin blade, such as an X-Acto knife. The touchscre en glass
will probably break if you try to pull it off by a corner or an edge. Shave the
old adhesive tape from the touchscreen and CRT with the knife. Adhesive
residues can be removed with denatured alcohol, which wil l l eave st reaks and
fingerprint smears. Use glass cleaner for the final cleaning prior to
reapplication of new tape.
4Place touchscreen on CRT straight and centered.
5Peel off 3 cm of tape backer in two opposite corners. Fold to make tabs.
6Pull back on tab to remove tape backer from under touchscreen while
pressing on touc hs c reen.
7Ensure there is nothing, such as tape, touching the reflector strips or
transducers.
Spacing the CRT fr om the B ezel
The last part of the touchscreen mounting procedure is to determine the
appropriate spacing of the CRT from the bezel, (with the touchscreen attached),
and to reinstall the CRT with the required spacers in place (refer to Figure2.8
on page31). Do not clamp the touchscreen between the bezel and the CRT
without proper spacers as breakage will almost certainly occur. The nominal
thickness of the touchscreen and the two layers of adhesive tape is 3/16-inch
(5 mm). If the touchscreen is to be in contact with the bezel, 3/16-inch (5 mm)
nominal spacers would be required.
Because the original CRT face-to-bezel mount is often an interference fit, with
the bezel shape altered slightly to draw it up tightly agains t the CRT, you should
start with a 1/16-inch (2 mm) thicker spacer than the nominal di mension above.
Two thicknesses of spacers, plus additional washers to use as shims, are
available in the Touchscreen Inst allation Kit. (See “Elo Part Num bers” on
pageC -79 for Touchscreen Installation Kit).