Paxar 656 / 636 Registration Sensor Adjustment, Squaring the Print Head, Print Head Tangent Point

Page 39

Squaring the Print Head

If the test pattern, printed on a wide web (4" (100mm) plus), is lighter on one edge than the other, it is possible that the printhead is out of square. This can be detected by looking at the front edge of the print head in reference to the printhead holder. To remedy this problem, power off the machine and remove the print head as outlined in the print head installation information. The printhead adjustment plate has been manufactured so when properly adjusted the head will be square. The printhead holder has a locator plate that must be slide up snug against the printhead mount plate. Install the head and it should be square to the web.

Print Head Tangent Point

The print head pressure adjustment must be done with the head pressure set light. Turn the pressure screw counterclockwise. Run a test pattern to determine the adjustment required.

If the entire test pattern is broken up, the printhead is probably not adjusted to the proper tangent point. To adjust the tangent point loosen the two print head lock screws one half turn with a 2.5mm ball driver provided in your spare parts kit. Do not remove the print head from the printer.

Once the screws have been loosened, use the adjustment thumb screw to move the head forward and backwards. Since the adjustment is very precise, do not turn the thumb screw more than 1/4 of a turn before running another test pattern to determine if you are adjusting the print head in the proper direction. Tighten the two mount screws (Do not over tighten). Run a test pattern again to determine further adjustment required.

Once you have restored a smooth even test pattern, re-tighten the two print head mount screws (Do not over tighten) and run one last test pattern.

Registration Sensor Adjustment

Adjusting Print Sensor Position

If you are running sense mark material with a hole or slot for registration:

-Open the feed roller and print head.

-Move the stock by hand in the feed direction until the registration desired is in the slot window for the pickup sensor.

-Close both the feed and print head.

-Slide the top sensor assembly using the sensor handle while looking at the registration index sensor. When the light turns on, and stays on, the sensor is over the registration hole.

If your machine stops, for no apparent reason, while it is in the middle of printing a batch of tickets, you may be missing sense marks (three consecutive tickets in which a sense mark was not found). Check for the following:

-The front panel will display a screen indicating that there has been a missed sensor error.

Users Manual Model 656/636

Maintenance / Adjustments • 33

Page 38 Page 40
Image 39
Page 38 Page 40
Contents Paxar Systems Group Manual Edition February Model 656This page intentionally blank Contents Electrical Connections Assembly Drawings Page Safety Issues / Warnings ScopeIntroduction Parts Warranty InformationLimited Warranty ServiceLocation of Printer Customer ResponsibilityUnpacking AC Power LinePaxar 656 / 636 Tool KIT #351390 Inventory of ComponentsInstalling the Stacker Printer SetupFuse Configuration Board InstallationInstall P.C. Boards as follows Installing the Power Cord TCB Dip Switch S2 SettingsInstalling the PC Software Installing the PC Interface CablePrinter Description Product DescriptionUnit Specification Personal Computer SpecificationsSelfform Installing Ink Ribbon Printer OperationPaxar Field Engineer Must be Present Stock Threading Loading StockButt Splice Web Guide AdjustmentFigure Print Head Open / Closed Print Head Open / CloseFeed Control Panel OperationPrinter Controls StartStop Sensor Indicator LightsError On LinePrint Reports Front Panel Menu FunctionsLCD Display Diagnostic TestsReady for Batches Imager VXX Batch ID QTY Building Image Imager VXXLast Batch WAS Imager VXX Press Enter to Print Last Verifier Scan Print Report ModeDisplay Modes Press Enter for Print ReportsSetup Mode Emulation MODE630 NEW Emulation MODE650 Cutter is Disabled Press Enter to EnableChange the CUT Change Strobe Strobe 0 NEW Strobe +2Press Enter for Life Counts Life Counters ModeTransfer TYPE052 NEW Transfer TYPE000 Press Enter to Print Checkout FormatProtected Mode Press Enter For 2ND Language Change Password 4 Digits NEW WordVerifier is Enabled Press Enter to Disable Change DATE/TIMEMaintenance / Adjustments Print Head HandlingHandling Print Head Cleaning ProcedureSupplies Print Head Replacement Tangent Print Head AdjustmentClean Platen Roller Print Head Pressure SettingPrint Head Tangent Point Registration Sensor AdjustmentAdjusting Print Sensor Position Squaring the Print HeadSensor Trim Pots Cleaning Print SensorHole / Slot Index Registration Sensor DIP Switch Bank LightsTP8 Reflective Index Registration SensorFilm Out Sensor / Top Ink Sensor Bottom Ink SensorFull Stacker Sensor Jam Sensor Stock out AdjustmentKnife Square Adjustment Headlift SensorStock Feed Adjustment Stacker AdjustmentsGeneral Mechanical Adjustment Of Feed Roller Pressure Blue RollerMechanical Adjustment of Stock Sense Mark Light Receiver Adjustment ProcedurePage Electrical Connections Machine WiringRelay Assembly Electrical System Schematic Motherboard Power Connectors Power Up / Sign On / Communications Electrical Trouble ShootingProblem Probable Cause Corrective Action Stock / Ink Advance Problem Probable Cause Corrective Action Print Problem Probable Cause Corrective Action Cut / Stack Electrical Trouble Shooting / Machine Set Up Sequence Stock Mechanical Trouble ShootingProblem Probable Cause Corrective Action Ink Print Knife Problem Probable Cause Corrective ActionTCB Composition Iglide Bearings Mechanical Trouble Shooting SequenceLubrication Procedure Cam Lubrication ProcedureAppendix a Error MessagesSoftware Upgrade Chip Placement Positions Appendix BThermal Control Board P/N Head Driver Board P/N Diskless Rom Board P/NFront Panel Board P/N Ink and Stock Transfer Types Appendix CValue Transfer Type Value Transfer Type Knife MFG Guideline Appendix DAppendix D Appendix D Page Assembly Drawings Unwind Assembly Drawing Description Qty Unwind Parts ListWeb Guide / Light Bar Assembly Drawing Web Guide / Light Bar Parts List Drive Assembly Drawing Drive Parts List Printhead Assembly Drawing Printhead Parts List Ink Unwind / Rewind Assembly Ink Unwind / Rewind Parts List Field Retrofit Kit Ink Rewind Arbor AssemblyInk Rewind Arbor Parts List Feed & Ink Drive Assembly Feed & Ink Drive Parts List Timing Belt Threading Diagram Timing Belt Parts List Ink Turn Roller Assembly Ink Turn Roller Parts List Knife Assembly Drawing Part Qty Description Number Knife Parts ListStacker Assembly Drawing Stacker Parts List Rewind Assembly Drawing Rewind Parts List Stock Out Sensor Assembly Drawing Part Qty Description Number Stock Out Sensor Parts ListOptional Stackers Stacker Specifications Optional 4.25 Pick-up Assembly Optional 4.25 Pick-up Parts List Optional 4.25 Stacker Assembly Optional 4.25 Stacker Parts List Optional Down Stacker Assembly Drawing Part Optional Down Stacker Parts List Part Optional Down Stacker Assembly Drawing Part Rear Support Stacker Optional Down Stacker Assembly Drawing Part #8 Thumb Screw Cap
Top Page Image Contents