Monarch 9820TM Supply Sensing Systems, Supply DETECTION/TRACKING System, Version 5.2 or greater

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CHAPTER 8 SUPPLY SENSING SYSTEMS

Several supply sensing systems have been used for the 9800 series printers. This chapter contains:

Supply detection and tracking for each printer.

A description of the supply deflector, Bi-cell emitter, lower supply guide, and Bi-cell sensor.

Sensor tests and adjustments for each sensing system.

Information about the version 5.2 sensing system.

SUPPLY DETECTION/TRACKING SYSTEM

An electro-optical system, consisting of a single infrared emitter and a bi-cell sensor, allows the printer to support die-cut, butt-cut (black mark only), with aperture, and non-indexed supplies. The supply detection and tracking system detects the document edge position and out-of-stock condition. The infrared emitter is located above the web path and is positioned to allow the bi-cell sensor detector to serve as a receiver for recognizing die-cut supplies.

Version 5.2 or greater:

The software uses an adaptive threshold algorithm that has successfully been used in the M9446 printer. This method provides the benefit of accurately processing apertures, die cut gaps, and black marks even though the electronic signal response may vary greatly between supply types. It consists of measuring the difference between the minimum and maximum A/D (Analog to Digital converter) values captured from the sensor.

The amplitude of this signal range represents the sensor response to the feature. The minimum value captured plus half the height of the signal range constitutes the threshold level for both the Top of Form (TOF) and Bottom of Form (BOF). This means that on the leading edge of the feature when the threshold value is crossed the BOF is marked. Likewise when the feature is departing the sensor and the trailing edge threshold is crossed the TOF is marked.

TOF/BOF Threshold = Low value + ((High Value - Low Value) / 2)

The paragraph above describes how the algorithm is developed on one feature. For V5.2 the threshold will

be an average threshold value calculated from the previous two features.

TOF/BOF Average = (BOF/TOF Threshold1 + BOF/TOF Threshold2) / 2

SUPPLY DEFLECTOR/BI- CELL EMITTER (IR LED)

The supply deflector is attached to the bottom of the print module and pivots up and down to load labels and ribbon. The IR Emitter is mounted in the center of the deflector, which positions it in the middle of the paper path and above the supply sensor located in the supply guide.

Version 5.2 or greater:

The sensing system consists of three sensing systems: an edge justified transmissive sensor, a center justified reflective sensor, and a center justified transmissive sensor which contains an LED positioned directly over the phototransistor of the reflective sensor.

The edge justified transmissive sensor provides an index signal when using die cut labels and edge justified aperture tags. It is mounted on the inside supply guide and moves with the guide depending on the supply width. This sensor is connected with an integral harness to the reflective sensor junction board.

The center justified overhead LED is mounted in the upper supply guide (flapper) and the phototransistor of the reflective sensor (located below the web) and provides an index signal when using center justified aperture tags. The overheard LED is connected with a harness to the reflective sensor junction board. A wire harness connected between the main PCB and the reflective sensor junction board provides the path for the power, ground, LED power, and sensor output signals.

NOTE: The new supply guide mechanisms are not backward compatible.

July 1998

TC9830SM Rev. B 7/98 Confidential

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Contents Monarch 9820/ 9830 Printers Table of Contents Troubleshooting DiagnosticsTests and Adjustments TC9830SM Rev. B 7/98 ConfidentialService Procedures Using FlashSupply Sensing Systems TC9830SM Rev. B 7/98 Confidential IiiAppendix a Printer ERROR/STATUS Codes Appendix B Connectors and CablesAppendix C Connector Locations Appendix D Model 928 Stacker Appendix E 926 Knife AssemblyList Of Tables Figure B CN 6 Transformer Output Power Safety Summary TC9830SM Rev. B 7/98 Confidential ViiViii TC9830SM Rev. B 7/98 Confidential Printer Features Printer SpecificationsPrinter Options July TC9830SM Rev. B 7/98 ConfidentialTC9830SM Rev. B 7/98 Confidential July Stock SpecificationsVersion 5.2 or Documentation Setting DIP SwitchesUnpacking the Printer Fuse Replacement Connecting to a HostExterior Rear SW2 and SW3 DIP Switch Settings Upper DIP SwitchesLower DIP Switches Functional Description Overview of ModulesFunctional Description Control Board AssemblyPower Transformer Assembly Power Conversion MemoryPrinter Control Operator Control PanelPrint Assembly Feed Assembly Printhead Locking Supply Holder AssemblyControl Panel Assembly Troubleshooting Analyzing Failure During Power UPEvaluation of a 616 Error DOT Shifting Failed Evaluation of a 704 Error OUT of SupplyEvaluation of a 754 Error OUT of Ribbon Evaluation of a 755 Error Printhead OpenEvaluation of a 765 Error Printhead Failure Evaluation of the Control Board AssyGeneral Troubleshooting Suggestions Problem Suggested ActionSendfile Test Label Level DiagnosticsPOWER-UP SELF-TEST Service Diagnostics Accessing Diagnostic ModesData Dump Mode DiagnosticsDiagnostics Test Mode Performing a Virgin Printer ResetSerial Loop Back Test Parallel Port TestDiagnostics Continuity Tests Tests and AdjustmentsService Tests Ribbon Tension Adjustment Print Contrast AdjustmentPlaten Motor Gear Adjustment Checking Supply Quality Eccentric And Locking ScrewTC9830SM Rev. B 7/98 Confidential July Service Procedures Maintenance OverviewGeneral Safety Tips Cover Housing RemovalPower Transformer Assembly Transformer RemovalBridge Rectifier Removal AC Inlet RemovalControl Board Assy. Removal Ribbon Spool Assembly Removal Ribbon Roller Assembly RemovalUpper Supply Guide Removal Printhead Module RemovalPlaten Module Removal Print Assembly RemovalLatch Fascia Removal Platen Module Replacement Bi-Cell Sensor ReplacementBi-Cell Sensor Removal Lower Supply Guide RemovalPeel Module Supply HolderPlaten Motor TC9830SM Rev. B 7/98 Confidential July Using Flash Flash Downloading ProceduresUsing Flash Supply Sensing Systems Supply DETECTION/TRACKING SystemSupply DEFLECTOR/BI- Cell Emitter IR LED Version 5.2 or greaterSupply Sensing Lower Supply GUIDE/BI- Cell SensorSupply Feeding Mechanical Adjustments Bi-Cell Sensor AdjustmentBi-Cell Sensor Adjustment Replacing a SensorSensor Setup with Version 5.2 or Greater Power UP Sensor RecognitionTo set/adjust the aperture center sensor To set/adjust the die cut edge sensorPerforming a Sensor Display Test DescriptionReading AN Error Label Code DescriptionPrinter Error/Status Codes Printer Error/Status Codes TC9830SM Rev. B 7/98 Confidential July Communication Failures 410 CodeMachine Faults 700 Data Formatting Failures 571Code Description Hard Printer Faults 900 Flash Faults 930Appendix B Connectors and Cables Printhead Assembly July TC9830SM Rev. B 7/98 ConfidentialFigure B- 3. CN Platen Stepper Motor Figure B- 6. CN 6 Transformer Output Power Board Ground Daughter Board Connectors Figure B- 10. CNTC9830SM Rev. B 7/98 Confidential July Appendix C Connector Locations Figure C- 1. Control Board Assy. Mother BoardFigure C-2. Control Board Assy. Daugher Board Specifications InstallationAppendix D Model 928 Stacker Functional DescriptionTroubleshooting Cables and ConnectorsError Messages Knife Connector Pin Signal Control Board CN1 PinControl Board CN3 Pin Full Sensor S1 Pin Jam Sensor S2 Pin Power Supply Connector J1 Signal Power Switch SW1Connector J2 Pin Signal/Pin Control Board Connector CN2 Pin Lubrication Maintenance ProceduresConnector J1 Pin Color Replacing Transport Assembly Replace RollersReplace Power Supply Replace DC MotorReplace Stepper Motor Replace Stacker SensorsAppendix E 926 Knife Assembly Knife SpecificationsTAG CUT Dimensions Evaluation of ErrorConnector Voltage Connector Pin VoltageModel 926 Knife Motor Replacement Blade Assembly ReplacementDrive Board Replacement Connectors and Cables TC9830SM Rev. B 7/98 Confidential July

9835TM, 9820TM, 9830TM specifications

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