Manuals / Hand Held Products / Computer Equipment / Barcode Reader

Hand Held Products 3700 CCD Service/Technical Assistance, Maintenance, Troubleshooting Guide

Models: 3700 CCD

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SERVICE/TECHNICAL ASSISTANCE	5

5.1Maintenance

The Hand Held Products SCANTEAM 3700 Machine Mount CCD Bar Code Scanner and Decoder is designed to provide reliable and efficient operation, requiring no routine maintenance. The 3700 has no moving physical parts. Convection air flow serves to cool the unit. Maintenance, therefore is related to troubleshooting and replacement of the 3700 Machine Mount CCD.

Troubleshooting procedures are described in the following section. Section 5.4 provides procedures for removing and replacing a SCANTEAM 3700 Machine Mount CCD.

5.2Troubleshooting Guide

This section describes procedures for identifying problems that prevent the SCANTEAM

3700 from operating normally. Field repair procedures include the following:

•Power supply troubleshooting

•3700 Machine Mount CCD troubleshooting

5.2.1Troubleshooting Hints

If there is no power to the 3700 Machine Mount CCD, check the following:

•Host power supply output to the 3700. Check that the output voltage from the host is +5 VDC. If the voltage isn’t present or is out of range, there may be a problem with power distribution from the host system. Appendix B provides the specific voltage range.

•If there is no output voltage, check to be sure the host instrument power switch is set to “ON”; if this switch is on and there is no output voltage, there may be a problem with the host power supply.

•Check all cables for secure connections and continuity (with an ohm/volt/meter).

Warning: Only a qualified person should attempt to replace a power supply.

Service/Technical Assistance

5–1

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Hand Held Products 3700 CCD manual Service/Technical Assistance, Maintenance, Troubleshooting Guide, Troubleshooting Hints

Contents

SCANTEAMR3700 CCD E2000 Welch Allyn Data Collection, Inc. All rights reserved Patents Page Chapter TABLE OF CONTENTSSet-Up and Installation Disclaimer Agency ComplianceChapter Configuring the SCANTEAMService/Technical Assistance Command ConventionsAppendices Glossary Index SCANTEAM 3700 Limited WarrantyTechnical Specifications Serial Commands SummaryList of Illustrations List of TablesIntended Audience PrefaceOverview of the Technical Manual Related Publications 1.1 Introduction SCANTEAM 3700 DESCRIPTION1.2 SCANTEAM 3700 Hardware Description 1.2.1 Interface Port 1.3 SCANTEAM 3700 Software Description1.2.2 Nonvolatile Memory Figure 2.1 Basic System Operation SYSTEM HARDWARE DESCRIPTION2.1 Introduction Host SystemSide View 2.2 General Characteristics of theFigure 2.2 3700 Fixed Mount CCD Dimensions Top View2.2.4 Mounting Inserts 2.2.2 Single Modular Input /Output/Power Port2.2.3 Audible Indicator 2.3 Operating Theory2.4.1 Communications Port 2.4 Scanner/Host Communication2.4.2 Asynchronous Serial ASCII Interface Auxiliary Trigger 2.4.3 Hardwire PinoutsSystem Hardware Description 2.5 Power Requirements3.1 Introduction SET-UP AND INSTALLATION3.2 General Preparation for Use 3.3.1 Preparation 3.3 Set-up Procedure for Evaluation of theSet-up Checklist Figure 3.1 SCANTEAM 3700 Identification LabelTo setup serial communications to the scanner 3.3.2 Set-up ProcedureA B C 1 2 3.4 Installation in the Host Instrument Front View Figure 3.2 Mounting Dimensions for theTop View Side ViewFront View Figure 3.3 Examples of SCANTEAM 3700 Barcode OrientationSKEW OR YAW Figure 3.4 SCANTEAM 3700 Pitch, Skew and Tilt ToleranceFigure 3.5 Specular Reflection Interference PITCH OR ROLLSide View = Minimum clearance required for scanner illumination of target= Receive path/area Figure 3.6 Scanner Illumination Clearance4.1 Preparation CONFIGURING THE SCANTEAMCommand Format 4.2 Command ConventionsEnable Decoding Command DC2 4.3 Operational CommandsReset Command A Disable Decoding Command DC4Serial Trigger Command Serial Trigger CommandSave Configuration Command Z Trigger Mode, a configuration command, is described in sectionFormat for a Configuration Comand 4.4 Configuration CommandsK modeglobal , modeport1 , modeport2 Set Communications Port Command Ka Set Preamble Command Kd Table 4.1 SCANTEAM 3700 Code ID ValuesSet Postamble Command Ke ASCII Set Communications Protocol Command KfCOMMAND Kf mode ParameterSet Read Timeout Command Kh Set Trigger Mode Command KgSet Votes Command Km Set No Read Message Command Kkone to seven ASCII characters Parameter Set Code 39 Command KpSet Codabar Command Kq COMMAND Kq enable, send start/stop, minimum length, maximum lengthSet UPC A/E, EAN 8/13 Command Ks Set I 2 of 5 Command Kr100 scans per second Set Code 128 Command KtSet Beeper Mode Command Ku Set Scan Rate Command Kv4.5 Configuration Status Query Commands Default Configuration Settings 4.6 Default Operating ParametersDefault Configuration Symbology Settings 5.2.1 Troubleshooting Hints SERVICE/TECHNICAL ASSISTANCE5.1 Maintenance 5.2 Troubleshooting GuideProblem 5.2.2 Diagnostic Procedure5.2.3 Troubleshooting Checklist Table 5.1 SCANTEAM 3700 Troubleshooting ChecklistEuropean Office 5.3 Obtaining Factory ServiceMain Office Welch Allyn Data Collection, Inc. d/b/a Hand Held Products5.3.2 Out Of Warranty Service 5.3.1 Service Under Warranty5.4 Help Desk 5.4 SCANTEAM 3700 Removal/Replacement Service/Technical Assistance Figure A.1 Main Elements of the 3700 CCD Bar Code System A.2 Scanning and Decoding a Bar Code SymbolCCD OPERATION AND BAR CODE SCANNING A A.1 ObjectivesCCD Sensor LED ReflectorPeak Detectors and Comparator Timing Sequence MicroprocessorFigure A.2 SCANTEAM 3700 Timing Sequence A.3 Bar Code Basics and Scanning Tips A Closer Look At Bar Code SymbolsBar Code Scanning Scanning Direction TECHNICAL SPECIFICATIONSB.2 Optical Specifications B.1 Scanner PerformancePitch Angle Focal Distance selected at time of order from scanner windowMRD minimum reflective difference 37.5% Skew AngleSignal B.3 Electrical SpecificationsCommunications Port Connector Pin Assignments 10-Pin Modular ConnectorOperating Temperature B.4 Environmental SpecificationsB.5 Mechanical Specifications IndicatorsVoids and Specks B.6 Bar Code Symbol SpecificationsBackground Substrate Ink Color and TypeOptional P3 B.7 SCANTEAM 3700 Interface CableCable part number 42205204-01 or 42205204-02 external power required Pin 9 is unused if an exter- nal power supply is used P3C.1 Configuration Commands SERIAL COMMANDS SUMMARYC.3 Configuration Status Query Commands C.2 Operational CommandsDefault Settings C.4 Default Configuration SettingsConfiguration CommandDefault Settings Symbology ConfigurationSerial Commands Summary ASCII CONVERSION TABLE ASCII Conversion Table SCANTEAM 3700 GLOSSARY Byte- is a group of 8 bits handled as a unit LED- is an acronym for “light emitting diode.” Glossary-4 SMT- is an acronym for “surface mount technology.” Glossary-6 INDEX Interface Cable, B-6 Page Index-4 SCANTEAM 3700 LIMITED WARRANTY 3700/TM Rev E 4619 Jordan Road P.O. Box Skaneateles Falls, New York