AccuTouch Product Guide - Elo TouchSystems

Reassembling the Monitor
With the touchscreen mounted, and the cable routing and exterior interface
determined, the monitor must be reassembled. Reassembly is generally in
reverse order of disassembly. Beware of potential clearance problems between
the bell of the CRT and the electronics chassis, as shorts in this area can produce
catastrophic failures of the monitor. Also, if the inside surface of the back case
is painted with a conductive coating, watch for shorts between the CRT circuit
board and the rear of the back case, as these can also produce disastrous results.
When the electronics chassis is reinstalled, the CRT circuit board is usually
carried along with it. It is often advisable to have a second person assist you, to
insure that this circuit board and various other cables do not interfere with the
yoke or neck of the CRT. Safety glasses, gloves, heavy protective clothing, and
caution are strongly advised for all participants.
Reconnect all cables that were removed during the disassembly procedure.
Watch for single ground connections from the CRT mount to the chassis,
between individual chassis members, etc., which may have lugs and screws to
connect them, or sometimes individual push-on solderless connectors. Failure
to reconnect these important cables may result in improper performance of the
monitor after reassembly and may render the unit unsafe.
Re-glue the CRT circuit board to the connector with an electronic-grade (noncorrosive)
silicone adhesive (such as GE RTV-162). Discharge the CRT again
(see “Discharging the CRT” on page 4-37), and then reconnect the anode lead to
the anode button, making sure the spring hooks catch inside the hole.
If practical, test the monitor and touchscreen at the earliest time possible before
reassembling the monitor, as the reassembly of the back case can be tedious. If
mistakes have been made, corrections are easier to make if the covers are still
off. Make sure, however, if you are using the 899389.000 cable for transient
protection, that the ground lead is connected to chassis ground of the monitor
and the cable is connected to the touchscreen.
Finally, remove any agency certifications (UL, CSA, FCC, TÜV, CE, etc.) for
which you have not resubmitted.
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