Datamax Allegro 2 manual Printhead Alignment

Page 70

Troubleshooting

Figure 4-1 Printhead Alignment

The horizontal placement of the Printhead is adjusted by turning the right and left Head Adjustment Screws that correspond to the right and left sides of the Printhead. Turning the screws 1/2 turn counter- clockwise will move the Printhead 0.012" (0.3 mm) forward. Likewise, a 1/2 turn clockwise will move the Printhead back 0.012" (0.3 mm). Therefore, only a small adjustment of even a 1/4 turn will cause a big difference in print quality.

Caution

Do not turn the Head Adjustment Screws more than 2 complete turns in either direction. Damage to the head mount assembly will result if the adjustment screws are turned too far.

The alignment procedure and the sequence that should be followed is described in section 4.2.1. This procedure should cure any Printer that may be troubled by poor print quality. All adjustments must be performed with label stock that is at least 4" (102mm) wide. If the final media used is different, then make the specific adjustments needed after the standard adjustments are completed.

62

Allegro2

Image 70

Contents Allegro2 Operator’s Manual Part Number Revision A3 Agency Compliance and Approvals Page Important Safety Instructions Page Contents Maintenance Introduction Getting StartedUnpacking and Inspection Location of Parts on Your Printer Mechanism DetailRear View Tear- off Assembly Installation Tear Bar Assembly InstallationUsing the Printer Control Panel Buttons, Lights and SwitchesGetting Started Light SwitchPaper/Ribbon RibbonInstallation Media InstallationLabels Label Loading Instructions Ribbon Loading Instructions Ribbon LoadingTo install a Memory Module Using the Printer OptionsAvailable Modules Font ROM Modules OptionsCutter 256K and 512K RAM ModulesPresent Sensor Peel and PresentMedia Rewinder Getting Started Allegro2 Power Up Self-Test Setting Up Your PrinterChecking Voltage Selection Test Label Part Number Description Interfacing to the PrinterInterface Cables Connecting to a CRT Sample InstallationsConnecting to a PC Connecting to Your Minicomputer Connecting to Your Non-ASCII DeviceSwitch Settings Switch SettingsBaud Rate Setting the Baud RateBaud 9600 4800 2400 1200 300 Test Word LengthOther Switches Switch Settings and FunctionsProgramming Commands Immediate CommandsSystem-Level Commands Char Description FormatBatch, 1-Cutter Enable Label-Formatting Commands Description FormatSpecial Label-Formatting Commands 10 Font-Loading Commands Programming ExamplesExample line Setting Up Your Printer Allegro2 Creating Labels Using Internal Batch Software Printer Used With a Link CRT Check Link CRT SettingsConnect Cables Function Default Settings Batch System InitializationVerify Setup, Power Up, and Load Media Menu Screens Formatting and Printing LabelsAvailable Fonts and Barcodes Function KeysLabel Name NEW Label Name ALT-P Screen Description Default Range Print ParametersOther Important Keys Create/Modify Label Screen Print Label Screen HeaderCreating Labels Using Internal Batch Software Sample Label Format Creating Labels Using Internal Batch Software Invalid Font Type Smooth Font Valid BH Ranges Smooth Font InformationNumber OUT of Range Creating Labels Using Internal Batch Software Not Enough Room for Field Data Lines Lhhhvvv Creating Labels Using Internal Batch Software Time and Date Information Format = Day number 1 = MondaySample PrintsPrint Label Screen Print Label ScreenCreating Labels Using Internal Batch Software System Maintenance Screen System Maintenance MenuMetric Reset PrinterCopy Module Print Test LabelCommand Valid Inputs Create/Modify Label CommandsQuick Reference Listing Special Keys Print Parameters ALT-PKey Function Troubleshooting Controlling Print Quality Direct-Thermal Stock Mechanical AdjustmentsAligning the Printhead Tag Stock or Stiff MediaPrinthead Alignment Label Stock Tracking Adjustment Printhead Alignment ProcedureRibbon Feed and Tracking Adjustments Fine Printhead Alignment Troubleshooting Allegro2 Adjusting Printhead Pressure and Support Printhead Mount AssemblyUnacceptable Print Quality TroubleshootingPrinter Does Not Print, or Prints Several Labels at once Skips Every Other Label Erratic PrintingRibbon Does Not Advance Unable to print in rotationPrints Light on the Right Side of the Label Printer fails to turn onInterior and Exterior MaintenanceDrive Roller Cleaning Schedule Area Method IntervalCleaning the Printhead Cleaning the PrintheadMaintenance Allegro2 Page Ascii Control Code Chart Appendix aMaintenance Allegro2 Char Hex Dec Page Table B-2 Word Length Appendix B Switch Settings and Cable InterfacingTable B-1 Baud Rate Table B-3 OptionsParamete Default Value Signal PinTable B-1 I/O Port Wiring Table B-2 Printer Default Communication ParametersFonts Appendix CAvailable Fonts and Barcodes Table C-1 Valid Human-Readable Font Ascii CharactersTable C-2 Font Sizes Font 6 62-character alphanumeric, uppercase Available Fonts and Barcodes Table C-3 Barcode Characteristics BarcodesHbic Barcode I Codabar Kmart NON EDI Uppercase R Error CodesLowercase Uppercase TAllegro2 Pin Description Appendix ETable E-1 Printer Interface Cables Table E-2 Printer Pin ConnectionsStraight Cable MXM PC DB25P to Printer ∙ Parallel to Serial Adapter Part Number Figure E-5 Centronics Parallel Interface ConverterAppendix F PrintingFonts BarcodesMedia Label MaterialLabel/Tag Media Specifications Table F-1 Media DimensionsCommunications Interfacing Lights, Buttons, Switch and POTLists of Approved Media ElectricalPhysical EnvironmentalOptions 256K Flash Eeprom Specifications Allegro2 Appendix G PrinterWarranty Service Procedures Thermal PrintheadGeneral Warranty Provisions Limitation of Liability