6620Q Maintenance Manual Brandname: TallyGenicom Category: Printer Total Pages: 474 Table of contents TrademarkAcknowledgements4Nergy5CommunicationNotices6Directives9Tallygenicom17OrderTheCorrectSpares18PrinterConfigurationCode20ImportantMaintenanceNotes21AboutThisManual22SafetyNotices23HinweiseZurSicherheit24ControlsandIndicators25MechanicalControls28ToolsAndTestEquipment30PluggingInThePrinter31CorporateOffices33CleaningThePrinter35CleaningTheInterior36Introduction43StartHere44ListOfMessages46GeneralSymptomList112CommunicationsFailures134DiagnosticPrinterTests136BootDiagnosticsMenu141FactoryMenu144ExceptionMenu146FirmwareDiagnosticPort147