AMX 8.5" Color Passive LCD Touch Panels - Manual (Page 45)

Upgrading the Firmware
41 Color Passive-Matrix LCD Touch Panels
Upgrading the Firmware
In order to upgrade the firmware in the panel, you can either return the panel to AMX or replace the
necessary EPROM chips yourself. Standard memory on the G3 boards for the CP series of touch
panels is 1 MB of base memory. The EPROM chips are pre-loaded with the firmware, and can be
obtained from the factory or dealer, then installed into the touch panel circuit board.
AXT-CP EPROM Replacement
Remove the EPROMs from the AXT-CP:
1. Discharge the static electricity from your body by touching a grounded object.
2. Remove the 2-pin power connector from the rear side of the panel. If you are using power via
AXlink, remove the AXlink connector.
3. Flip the touch panel face down onto a soft cloth, and remove the seven Phillips-head screws
from the bottom panel. Then, gently remove the panel.
4. Remove the Phillips-head screw located in the center of the circuit card.
5. Gently tilt the circuit card down towards the connector side and pull backwards until you clear
the connector housing. Then, slowly rotate the circuit card backwards until you can lay it down
flat with the EPROMs exposed as seen in FIG. 16. EPROMS have stickers indicating the
firmware version.
6. Carefully remove each EPROM individually by inserting a Phillips screwdriver with a non-
conducting flat-blade between the EPROM and the connection site (at the notch side).
7. Gently pry the EPROMs from their connection base until they begin to loosen. Carefully pull
them out by either using an EPROM removal device or by gently pulling them from the base
(making sure to evenly pull the prongs from the socket holes)
.
FIG. 16 EPROM location on a TiltScreen touch panel
1
4
ODD
32-pin sockets
EPROM Odd
and Even
E
VEN
Notches
Insert the EPROMs with the notches facing the correct direction. Match the Even and
Odd EPROM placement with the location shown above.
During the replacement process, cables may be pulled from their connections and
should be re-checked to confirm they are securely connected.