HP LaserJet 4000 Service Manual

HP LaserJet 4000 Service Manual Printheads too Early? Troubleshooting Repetitive Ink Cartridge Messages Troubleshooting Repetitive Printhead Error Messages Printhead Error Codes Summary of Solving Ink Supplies Problems Service Tests and Utilities Introduction Phone Support Diagnostics – Self Test Service Tests (Diagnostics) Entering the Service Tests Menu Ink Supply Station Carriage Movement Paper Advance Test Service Utilities Entering the Service Utilities Menu EEROM Setup Turn Drive Roller Unlock Carriage Prime Tubes Change Cutter Change Ink Tubes Printer Information Service Calibrations Entering the Service Calibrations Menu Printhead Alignment (includes PPS Calibration) Color Calibration Advance Calibration Factory Advance Calibration Print Quality Print Quality Troubleshooting Checklist How to Use the Troubleshooting Procedure What is the Troubleshooting Procedure? Considerations for Using the Troubleshooting Procedure. Performing the Troubleshooting Procedure Troubleshooting Procedure Flowchart No Printing Defects Found Using the Troubleshooting Procedure Solving Color Accuracy problems Color Consistency problems Long Term Color Bleeding (Glossy Papers) Media There are Smears or Scratching on the Printed Media Parts and Motor Drive Roller Miscellaneous Items Removal and Installation Introduction Safety Precautions Electrostatic Discharge (ESD) Precautions Required Tools Screw Types Left Hand Cover Right Hand Cover Front Panel Window and Top Cover Media Deflectors Pinch-Arm Mechanism Pinch-Arm Lever Table of Contents Pinch-Arm Sensor Fork Idler, Tensioner and Idler Pulley Encoder Strip Carriage Assembly (Including Belt) Paper-Axis Motor Drive Roller Gear Assemblies Preventive Maintenance Moisture on the Printer Noisy Carriage Bushing Belt Swelling Cleaning the Printer General Cleaning Cleaning the Drive Roller/Print Platen Scheduled Maintenance Level of Printer Usage Scan-Axis Maintenance Functional Overview Introduction SKU Overview Electrical System Introduction Hardware Description Power Supply Unit (PSU) Front Panel Ink Delivery System (IDS) Ink Supply Station (ISS) Tubes Assembly Service Station HP LaserJet 4000 Service Manual

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