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14
Status Light (LED) Diagnostics
3M Touch Systems controllers are highly reliable units; however, there may be occasions
when the controller does not perform exactly as you expected. The SC400 controller
provides diagnostic feedback with a light emitting diode (LED) on the component side of
the board that indicates the status of the touch screen unit. During normal operation,
when you touch the touch screen the LED becomes bright as long as the controller
detects a touch. A flashing (or blinking) LED during power-up indicates the controller's
power-on self-test failed. Refer to Table 2 for a description of each error code.
Table 2 LED Diagnostic Codes for SC400 Controllers
Flashes Self Test
Condition
1
Reserved.
2
ROM Error
3
Reserved.
4
Block 1
checksum Error
5
Hardware error
6
Reserved.
7
Reserved.
What's Next?
Installing and Using MicroTouch™ Software
The MicroTouch™ Software Suite includes a driver and tools that enable your touch
screen to work with your computer. 3M Touch Systems has touch screen drivers for
many operating systems, including Microsoft® Windows® XP, 2000, 9X, Windows Me,
and Windows NT 4.0. Be sure to install the touch screen software for your operating
system.
TouchWare 5.64 SR4 supports the SCxxx family of controllers. Please check the
corporate website for the latest releases of software and dcoumentation.
For more information on connecting your cables and installing and using the touch
screen, refer to the TouchWare™ for Windows User's Guide (19-224). All 3M Touch
Systems documentation is available from the corporate website at
from the Touch Solutions CD (P/N 19-640).
Self Test
Description
Bit
0
Reserved
1
Firmware EPROM checksum
verification error
2
Reserved
3
Operating parameters invalid
(using defaults).
4
Power up touch screen
connector voltages out of range
5
Reserved
6
Reserved
3M Touch Systems Proprietary Information
SC400 Controller Reference Guide
What to do...
No recovery. Replace the controller.
Cycle power off and on.
Check connections to touch screen
www.3Mtouch.com
or
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