Metrologic Instruments MLPN 2358 manual Possible CAUSES/SOLUTIONS

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SYMPTOMS

The unit powers up properly, lasers come on, but the unit does not scan and does not beep when a bar code is presented

POSSIBLE CAUSE(S)/SOLUTION(S)

Improper settings can be the cause for a scanner not to scan. The following would be typical examples:

1.Scanning a particular symbology that is not enabled. (UPC/EAN, Code 39, Interleaved 2 of 5, Code 93, Code 128 and Codabar are enabled by default.) Verify that the type of bar code being read has been selected.

2.The scanner has been programmed for a character length lock, or a minimum length and the bar code being scanned does not satisfy the programmed criteria. Verify that the bar code that is being scanned falls into the criteria. (Typical of Non-UPC/EAN codes.)

3.The scanner scans a bar code but the scanner locks up (green LED comes on and stays on) after the first scan. The scanner is configured to support some form of host handshaking but is not receiving the signal. If the scanner is setup to support ACK/NAK, RTS/CTS, XON/XOFF or D/E, verify that the host cable and host are supporting the handshaking properly.

4.The scanner scans and transmits but the data is not correct at the host. Verify that the scanner’s data format matches that required by the host. Make sure that the scanner is connected to the proper host port.

SYMPTOMS

Scanner beeps at some bar codes and NOT for others of the same bar code symbology

POSSIBLE CAUSE(S)/SOLUTION(S)

1.The print quality of the bar code is suspect.

2.The aspect ratio of the bar code is out of tolerance.

3.The bar code may have been printed incorrectly. (check digit/character/or border problem.)

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Contents Metrologic INSTRUMENTS, INC Locations USA Corporate Headquarters EuropeTable of Contents Appendix a Appendix BAppendix C Appendix DIntroduction Scanner and Accessories MCA Metrologic Connector Adaptor Mlpn MCA951Quick Start Operational Test Scanner Installation Powered by External Power Supply Scanner Installation Powered by Host Device Manufacturer’s Recommendation MS6720 Stand Complete Stand Kit MlpnScanner Parts Green and Red LEDAudible Indicators Three Beeps after power upOne Beep Razzberry ToneThree Beeps on power up Failure ModesFlashing Red and One Razzberry Tone Flashing Red and Green and Two Razzberry TonesVisual Indicators No Red or Green LEDLabel Depth of Field Specifications Normal Depth of FieldShort Depth of Field Extended Depth of Field Optional Depth of Field Automatic Turn-On Specifications IR Sensor Normal Depth of Field Short Depth of FieldScan Pattern Specifics Omnidirectional Scan VolumeProjection Axis Cross-Sectional Scan Pattern Maintenance All Interfaces All Interfaces Possible CAUSES/SOLUTIONS Keyboard Wedge Only RS-232 only Applications and Protocols Scanner Version Identifier Communication ProtocolsKeyboard Type Keyboard Country TypeDesign Specifications Appendix aMechanical ElectricalOperational EnvironmentalDefault Settings Appendix BDTS/NIXDORF NCR F NCR S ACK/NAK Ocia Appendix C Pin Assignments Cable Pin Assignments for the Coil CableVersion 9 Ocia Version 11 Pin Function Version 14 Version 15 Ltpn FuPinction FunctionPin Assignments for the MCA951 DEC9S Version 14 Version 15 Ltpn Pin Function FuPinctionPin Function Pin Female DINPin Male DIN Pin Male mini-DIN Function Warranty and Disclaimer Limited Warranty Appendix DDisclaimer Appendix E RemarqueAnmerkung Appendix F PatentsIndex MCALtpn System interfaces