Craden Peripherals DP8 No Document Motion, Carriage Fault or No Carriage Motion, Ribbon Smear

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3.13.3 No Document Motion

If a document will not advance upon insertion:

1.Press EJECT if a previous document had been manually removed without an eject command.

2.Press Aif configured for DOCUMENT INSERT WITH AKEY (see 3.5.1).

3.Use 9 0 FUNCT to check the front document sensor (see 3.6.2).

3.13.4Carriage Fault or No Carriage Motion

If the carriage will not move after a document is inserted:

1.Remove the foam packing blocks from both sides of the carriage.

2.Press ENTER if configured for PRINT AFTER ENTER KEY (see 3.5.1).

3.13.5No Printing or Light Printing

If no print noise occurs when the carriage traverses a document, check that the printhead is plugged into the carriage flex cable. If printhead noise is present, but no or light printing occurs:

1.Correctly install the ribbon cartridge (see 3.1).

2.Remove the cartridge and check for jammed ribbon.

3.Check that the cartridge knob rotates as the carriage traverses.

4.Check that QUIET MODE is off (see 3.5.1).

3.13.6Ribbon Smear

If there is ribbon smear on the document and it is not very wrinkled:

1.Check for too thick a document or printing too close to a fold or edge (see 1.2).

2.Check for a displaced or missing ribbon shield.

3.Ribbon life may be increased by reducing the print darkness (see 3.5.4).

4.A generic ribbon is being used. Change to a Craden ribbon.

3.13.7Erratic Document Feed, Mispositioning or Overprinting

If feeding is erratic or preprinted forms are not correctly positioned:

1.Check for correct LINES/INCH (see 3.5.1).

2.Check that LINE #1 is NOT set to a negative “-” number (see 3.5.1).

3.Check that all service parameters are correctly set (see 3.5.4).

3.13.8Rollers Run at Power-Up or After Document Ejected

If the feed rollers continue to rotate when power is turned on or after a document is ejected, blow the document sensors (near the left end of the front rollers) free of dust and debris.

3.13.9 Erratic Character Spacing or Carriage Hitting End Stops

If horizontal character spacing is erratic or forms are not correctly printed:

1.Check for correct CHARACTERS/INCH settings (see 3.5.1).

2.Check that the ribbon cartridge is seated.

3.Check that all service parameters are correctly set (see 3.5.4).

4.If the carriage shaft has any residue build-up, clean it with a soft, dry cloth.

5.With power off, check that the carriage moves freely by hand.

3.13.10 Interface Inoperative

If the printer works in self test, but won't run from the interface:

1.Check for firm mounting of the interface cable to the rear panel.

2.Check for communication parameters set identically to the host system.

3.Check for correct interface wiring (see 3.11.3).

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Contents Revision R I P H E R a L S R P O R a T I O NAirport HIGHWAY, PENNSAUKEN, NJ Pages Affected Record of ChangesALL Operation DP8 & DP9 Technical Manual Table of ContentsTheory of Operation MaintenanceRecommended Spare Parts Recommended Service Tools TroubleshootingMajor Assembly Illustrations & Parts Lists Physical Characteristics Document CharacteristicsInterface Environment & StandardsInstallation Procedure Operation Ribbon Cartridge Loading ReshipmentDisplay Operation Keypad OperationKeypad & Display Panel Configuration Category Press ConfigurationDocument Insertion Display Printer ParametersRemarks Override Parameters Communication ParametersDisplay Remarks Diagnostics Power Up Diagnostics Service ParametersError Conditions Document Jam Enhanced DiagnosticsCarriage Fault Self TestHex Command Command SummaryProgramming AsciiESC K ESC HESC L ESC RPrint Commands Stops double height print High Density Graphics Commands Low Density Graphics CommandsDisplay Commands DC3Status and Keypad Commands Configuration CommandsDP XE DJ KB BZ BA Ascii Installing Craden Drivers on Windows 95 orMeaning DriversInstalling Craden USB Drivers on Windows NT, 2000 or XP Installing Craden Drivers on Windows NT, 2000 or XPUsing Printer Resident Device Fonts Interfacing Writing to the Printer LCD DisplayFunct Input Buffer OperationPin Signal Description Interface Signals & CablesPrinter Pin PC-25 Pin PC-9 Pin Signal Problem SolvingRollers Run at Power-Up or After Document Ejected Carriage Fault or No Carriage MotionNo Document Motion No Printing or Light PrintingDocument Drive Assembly Carriage Drive AssemblySwitching Power Supply Theory of Operation OverviewMain Printed Circuit Board Keypad/Display AssemblyMicroprocessor System Stepper Motor DriversPhase a I0A I1A Phase B I0B I1B Current U20 15 a Stepper Motor Drive CircuitPrinthead Drivers Keypad and Display Refer to Schematic #72135Sensors Character PrintingPrinthead Drive Circuit I LLubrication and Cleaning 5.1.1 Lubrication MaintenanceDocument Feed Roller Cleaning Sensor CleaningDocument Print Area Cleaning Printhead CleaningCabinet Exterior Cleaning Harsh, abrasive cleanersElectrical Adjustments Service Parameter SET-UP ProcedureMechanical Adjustments 5.4.1 Printhead Gap Ribbon Shield Removal / Replacement Ribbon Shield Face Inspection Document Drive Belt Tension Carriage Drive Belt TensionCarriage Shaft Cam and Shaft Rack Rear Document Roller Spring ForceAuto Alignment Gate Height Auto Alignment Gate RampFront Document Roller Spring Force Replacement ProceduresAuto Alignment Skew Sensor Calibration CabinetSensor PCB Power Supply PCBKeypad DisplayPrinthead Document MotorCarriage Drive Belt Document Drive BeltBasic Troubleshooting Procedure TroubleshootingNo Display Defective KeypadNo Document Motion Defective SensorNo Carriage Motion No Print or Light Print Symptom Condition RemedyPrint Quality Erratic Document Feed or Mispositioning Missing DotsErratic Character Spacing or False Document Jams Interface InoperativeUse this flow chart to assist in troubleshooting Diagnostic FlowchartRecommended Spare Parts Recommended Service ToolsDescription PART# Printer Diagram DWG REV. C DP8 & DP9 Assembly TreeAll assemblies not ending in X are used both on DP8 and DP9 Page Page Page Page Page Page Page