Craden Peripherals DP8 Maintenance, Lubrication and Cleaning 5.1.1 Lubrication, Sensor Cleaning

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5.0MAINTENANCE

5.1LUBRICATION AND CLEANING 5.1.1 Lubrication

There are no lubrication points in the printer. All parts are either permanently lubricated or are designed to operate dry. No lubricants should be used. They may adversely affect operation.

5.1.2Document Feed Roller Cleaning

1.Open the cabinet.

2.Moisten a lint-free cloth with isopropyl alcohol and wipe the front rollers while rotating the gear on the end of the roller shaft. Do not use any strong solvents in place of alcohol.

3.In similar fashion, clean the rear rollers. Make sure all rollers are dry and free of residue.

5.1.3Sensor Cleaning

Clear sensor light paths of paper, paper dust and other obstructions if rollers continue to run when no document is present or other sensor problems occur.

L - Left (Home) Sensor – synchronizes carriage motion

Input Guide

MultiSensor Cable

Must be seated in connector properly

F-

Front Sensor

Senses document insertion

B-

Back Sensor

Senses document top edge

M-

Middle Sensor

Detects skew

R-

Right Sensor

Detects skew

1.Insert the flexible nozzle tube of a compressed air can under the input guide and near each of the document sensors. Clear each sensor area with a 5-second burst of air.

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Contents Airport HIGHWAY, PENNSAUKEN, NJ R I P H E R a L S R P O R a T I O NRevision ALL Record of ChangesPages Affected DP8 & DP9 Technical Manual Table of Contents OperationMaintenance Theory of OperationMajor Assembly Illustrations & Parts Lists TroubleshootingRecommended Spare Parts Recommended Service Tools Document Characteristics Physical CharacteristicsInterface Environment & StandardsInstallation Procedure Reshipment Operation Ribbon Cartridge LoadingKeypad & Display Panel Keypad OperationDisplay Operation Document Insertion ConfigurationConfiguration Category Press Remarks Printer ParametersDisplay Display Remarks Communication ParametersOverride Parameters Service Parameters Diagnostics Power Up DiagnosticsEnhanced Diagnostics Error Conditions Document JamCarriage Fault Self TestCommand Summary Hex CommandProgramming AsciiESC H ESC KESC L ESC RPrint Commands Stops double height print Low Density Graphics Commands High Density Graphics CommandsDisplay Commands DC3DP XE DJ KB BZ BA Configuration CommandsStatus and Keypad Commands Installing Craden Drivers on Windows 95 or AsciiMeaning DriversUsing Printer Resident Device Fonts Installing Craden Drivers on Windows NT, 2000 or XPInstalling Craden USB Drivers on Windows NT, 2000 or XP Writing to the Printer LCD Display InterfacingFunct Input Buffer OperationInterface Signals & Cables Pin Signal DescriptionPrinter Pin PC-25 Pin PC-9 Pin Signal Problem SolvingCarriage Fault or No Carriage Motion Rollers Run at Power-Up or After Document EjectedNo Document Motion No Printing or Light PrintingCarriage Drive Assembly Document Drive AssemblySwitching Power Supply Theory of Operation OverviewKeypad/Display Assembly Main Printed Circuit BoardMicroprocessor System Stepper Motor DriversPhase a I0A I1A Phase B I0B I1B Current Stepper Motor Drive Circuit U20 15 aKeypad and Display Refer to Schematic #72135 Printhead DriversSensors Character PrintingI L Printhead Drive CircuitMaintenance Lubrication and Cleaning 5.1.1 LubricationDocument Feed Roller Cleaning Sensor CleaningPrinthead Cleaning Document Print Area CleaningCabinet Exterior Cleaning Harsh, abrasive cleanersService Parameter SET-UP Procedure Electrical AdjustmentsMechanical Adjustments 5.4.1 Printhead Gap Ribbon Shield Removal / Replacement Ribbon Shield Face Inspection Carriage Drive Belt Tension Document Drive Belt TensionCarriage Shaft Cam and Shaft Rack Rear Document Roller Spring ForceAuto Alignment Gate Ramp Auto Alignment Gate HeightReplacement Procedures Front Document Roller Spring ForceAuto Alignment Skew Sensor Calibration CabinetPower Supply PCB Sensor PCBKeypad DisplayDocument Motor PrintheadCarriage Drive Belt Document Drive BeltTroubleshooting Basic Troubleshooting ProcedureNo Display Defective KeypadNo Carriage Motion Defective SensorNo Document Motion Print Quality Symptom Condition RemedyNo Print or Light Print Missing Dots Erratic Document Feed or MispositioningErratic Character Spacing or False Document Jams Interface InoperativeDiagnostic Flowchart Use this flow chart to assist in troubleshootingDescription PART# Recommended Service ToolsRecommended Spare Parts Printer Diagram All assemblies not ending in X are used both on DP8 and DP9 DP8 & DP9 Assembly TreeDWG REV. C Page Page Page Page Page Page Page