Elo TouchSystems IntelliTouch SecureTouch Hardware Troubleshooting, Video Alignment Problems

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For detailed troubleshooting information on MonitorMouse for Windows, MonitorMouse for DOS, MonitorMouse for DOS, ELODEV, and TouchBack, see the DOS and Windows Driver Guide, MonitorMouse for OS/2 User's Guide, MonitorMouse for Windows NT User's Guide, or MonitorMouse for Macintosh User's Guide as appropriate, or visit Elo’s Web Tech site, www.elotouch.com/ support.

Video Alignment Problems

If the touchscreen is responding and the data is linear, but a touch does not activate the appropriate zone in the application, try video alignment. Use ELOCALIB under DOS or the Touchscreen Control Panel with all versions of MonitorMouse. Improper video alignment may be indicated when the cursor does not move at the same pace as a sliding finger, or when it moves in the opposite direction. The cursor should always move in the same axis as your finger.

If you have a DOS application, erase any ELOGRAPH.CAL files and complete video alignment in the video mode used by your application. For example, you may have a VGA monitor with your application running in text mode, so complete video alignment in text mode rather than graphics mode.

Also see Calibration Problems in the DOS and Windows Driver Guide for additional information.

Hardware Troubleshooting

Troubleshooting the touchscreen system hardware may require analysis of the touchscreen, controller, cables, power supply, and the integration process. The best place to start is with the controller.

Use the controller power-on diagnostics which are displayed when the Elo driver software is loaded to check for specific faults (see Diagnostic Codes, page 59). If they are accessible, the diagnostic LED’s on serial and MX controllers may identify a problem (see Diagnostic LED’s, page 58).

Also, check whether the controller is transmitting any touch data. Use the COMDUMP program for serial controllers. The 2310B operates at 9600 baud, 8 data bits, 1 stop bit, and no parity, (see page 75 for controller jumper settings). You may encounter one of the following symptoms:

•No touch data. When no touch data is reported, the problem may be the touchscreen, controller, or cabling. If the controller power-on diagnostics or diagnostic LED’s do not identify the problem, substitute individual system components if they are available. Refer to the remainder of this appendix for information on troubleshooting each system component.

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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 Introduction Intellitouch TechnologyIntelliTouch Touchscreen IntelliTouch TouchscreenIntelliTouch controller IntelliTouch ControllerAgency Approvals Driver SoftwareWork Area Safety InformationGetting Started Design Considerations for CRTs and LCDsProtective Clothing Bezel design Bezel DesignCRT Integration Safety InformationSuggested Tools Definition of TermsTypical IntelliTouch Touchscreen Installation Summary of Installation StepsUnpacking the Touchscreen Testing the MonitorIncoming Inspection Disassembling the MonitorDischarge the CRT Remove the Back CaseRemove 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 Touchscreen Cabling System for Internal Serial Controller Internal Serial Controller 2500SP4 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 Reassembling the Monitor Routing the Touchscreen CablesProper Sealing Improper Sealing Sealing the MonitorSealing Material Selection System EvaluationProper Bezel Mounting Improper Bezel Mounting LCD Integration Unpacking the Touchscreen Definition of Terms Disassembling the LCD MonitorTools and Equipment Required Parts for Serial ConnectionRequired Parts for USB Connection Optional Parts for USB Connection Optional Parts for Serial ConnectionRemoving the LCD Removing the Rear CaseDetermining Touchscreen Fit Mounting the Touchscreen Attaching double-sided adhesive tape to the touchscreen Spacing the LCD from the Bezel Sealing10 2500S Internal Serial Controller 11 2500U USB controller Parasitic Tap of 5Vdc Power12 DC to DC converter Parasitic Tap of 7-30Vdc DC to DC converterModifying the Case for USB Output Modifying the Case for Serial Output13 Horizontal escutcheon plate Re-assembling the Display48I 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 Process Troubleshooting GuideSoftware Troubleshooting Display ProblemsVideo Alignment Problems Hardware TroubleshootingSerial Controller Using the Comdump UtilityByte Byte DescriptionP2 Pins DB25 Host Signal SourceRS-232 Connections Power Connections Touchscreen and Touchscreen Cables Figure A.2 Transducer and Wedge AssemblyIC1 Cable EC2 Cable2x6 Male Header DB9 Male Function IntelliTouch Serial Controllers Diagnostic LEDsDiagnostic Codes IntelliTouch Serial Controller 2500SAA Bit Value hex Description Figure A.4 DB9 and DB25 Connector Pin Positions DB9 and DB25 Connector Pin PositionsSpecifications Environmental IntelliTouch TouchscreensMechanical OpticalUL Compliance Fire Retardation FCC Compliance Agency ApprovalsPhysical Characteristics IntelliTouch 2500U USB ControllerElectrical Touchscreen Connector Power Connector, P4 P2 pin number Signal name Standard wire color Signal name P4 pin Signal function Signal name P3 pin Signal functionLED State Function LED Diagnostic CharacteristicsAgency Approvals LED Blink Rate FunctionFigure B.4 2500U USB Controller, top view 2500U USB Controller DrawingsFigure B.6 2500U USB Controller, bottom-view Environments IntelliTouch 2500S Serial Controller72I 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 Parameter Value Applicable Signals EIA-232 subsec Signal Name DB-9 P2 pin Sourced by Signal FunctionBoard mounted Cable applied Header Plug Jumper Function Jumper Settings76I 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 Figure B.11 2500S Serial Controller, top view DrawingsFigure B.13 2500S Serial Controller Part Number Description ELO Part NumbersCables 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
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