Elo TouchSystems IntelliTouch SecureTouch manual Display Problems, Software Troubleshooting

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Display Problems

If you are experiencing display problems (such as no video, no horizontal or vertical synchronization, raster non-linearities, etc.), remember that the video function of the display and the Elo touchscreen installed on the display are separate systems. Therefore, problems with the display should be treated as display problems, not touchscreen problems Diagnostic procedures and possible corrections for display problems should be performed using the troubleshooting procedures outlined in your display manual.

The IntelliTouch touchscreen is powered from its controller. Usually the display and touchscreen controller have separate power supplies and operate independently. Thus it is possible for the touchscreen to interact with the computer even if the display is powered off. Internal serial controllers may be powered by a supply that is separate from the display's power supply, but controlled through the displays power switch. In this case, even if display problems exist, the touchscreen system will probably function if the display power switch is on.

Software Troubleshooting

Before beginning software troubleshooting, verify that the touchscreen hardware is working by running the COMDUMP program for serial controllers (see page 52, Using the COMDUMP Utility). If the touchscreen is operating, then the problem may be with the driver software, the application software, or a conflict with other hardware or software. (The problem may also be due to incorrect touchscreen video alignment, described on page 51, Video Alignment Problems.)

The general technique for troubleshooting software problems is to identify at what layer of software and associated hardware the problem exists. For example, if you have a Windows application, there are several layers of software and drivers. The problem could be with your application, Windows, MonitorMouse for Windows, MonitorMouse for DOS, the ELODEV driver, a conflict with another device, or the touchscreen hardware. The best approach to software troubleshooting is to remove the layers of software one by one, testing each layer until the problem is isolated. Also try removing other hardware and software that may be conflicting with the touchscreen hardware and driver software.

A-50I n t e l l i T o u c h / S e c u r e T o u c h G u i d e

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Contents Page Elo IntelliTouch /SecureTouch Touchscreen Guide Disclaimer Page Intellitouch 10-YEAR Warranty Page Table of Contents Index List of Figures Viii List of Tables Page Intellitouch Technology IntroductionIntelliTouch Touchscreen IntelliTouch TouchscreenIntelliTouch Controller IntelliTouch controllerDriver Software Agency ApprovalsSafety Information Work AreaProtective Clothing Getting StartedDesign Considerations for CRTs and LCDs Bezel Design Bezel designSafety Information CRT IntegrationDefinition of Terms Suggested ToolsSummary of Installation Steps Typical IntelliTouch Touchscreen InstallationDisassembling the Monitor Testing the MonitorIncoming Inspection Unpacking the TouchscreenRemove the Back Case Discharge the CRTRemove the Electronic Chassis 14I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Remove the CRT Verify Touchscreen Fit Page Attaching the Touchscreen Proper placement of adhesive tape to the touchscreen Spacing the CRT from the Bezel Installing the Controller Internal Serial Controller 2500S Touchscreen Cabling System for Internal Serial ControllerP4 Pins Signal Function 24I n t e l l i T o u c h / S e c u r e T o u c h G u i d e External Serial Controller 26I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Internal USB Controller 2500U Internal USB Controller 2500U28I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Routing the Touchscreen Cables Reassembling the MonitorSealing the Monitor Proper Sealing Improper SealingProper Bezel Mounting Improper Bezel Mounting Sealing Material SelectionSystem Evaluation LCD Integration Unpacking the Touchscreen Disassembling the LCD Monitor Definition of TermsRequired Parts for USB Connection Tools and EquipmentRequired Parts for Serial Connection Optional Parts for Serial Connection Optional Parts for USB ConnectionRemoving the Rear Case Removing the LCDDetermining Touchscreen Fit Mounting the Touchscreen Attaching double-sided adhesive tape to the touchscreen Sealing Spacing the LCD from the Bezel10 2500S Internal Serial Controller 11 2500U USB controller Power Parasitic Tap of 5VdcParasitic Tap of 7-30Vdc DC to DC converter 12 DC to DC converterModifying the Case for Serial Output Modifying the Case for USB OutputRe-assembling the Display 13 Horizontal escutcheon plate48I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Troubleshooting Guide Troubleshooting ProcessDisplay Problems Software TroubleshootingHardware Troubleshooting Video Alignment ProblemsUsing the Comdump Utility Serial ControllerByte Description ByteRS-232 Connections P2 Pins DB25Host Signal Source Power Connections Figure A.2 Transducer and Wedge Assembly Touchscreen and Touchscreen Cables2x6 Male Header DB9 Male Function IC1 CableEC2 Cable Diagnostic LEDs IntelliTouch Serial ControllersAA Bit Value hex Description Diagnostic CodesIntelliTouch Serial Controller 2500S DB9 and DB25 Connector Pin Positions Figure A.4 DB9 and DB25 Connector Pin PositionsSpecifications Optical IntelliTouch TouchscreensMechanical EnvironmentalAgency Approvals UL Compliance Fire Retardation FCC ComplianceElectrical Physical CharacteristicsIntelliTouch 2500U USB Controller Touchscreen Connector Power Connector, P4 P2 pin number Signal name Standard wire color Signal name P3 pin Signal function Signal name P4 pin Signal functionLED Blink Rate Function LED Diagnostic CharacteristicsAgency Approvals LED State Function2500U USB Controller Drawings Figure B.4 2500U USB Controller, top viewFigure B.6 2500U USB Controller, bottom-view IntelliTouch 2500S Serial Controller Environments72I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Signal Name DB-9 P2 pin Sourced by Signal Function Parameter Value Applicable Signals EIA-232 subsecBoard mounted Cable applied Header Plug Jumper Settings Jumper Function76I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Drawings Figure B.11 2500S Serial Controller, top viewFigure B.13 2500S Serial Controller ELO Part Numbers Part Number DescriptionCables Stylus 82I n t e l l i T o u c h / S e c u r e T o u c h G u i d e Glossary Page Glossary-85 Page Glossary-87 Vertical Refresh Rate-See Refresh Rate Index Page Page