Muratec F-114P service manual Defective Image Quality

Page 114

Adjustment and Troubleshooting

4) Defective Image Quality

Description: The copied image is excessively light or dark

1. Check shading profile.

2.Check the gap between original and scanner glass.

Redo shading profile in the tech mode.

A gap of more than 0.5 mm can cause a blurred image. Ensure cover close correctly. Replace as necessary.

3. Check printing quality.	See "Print" troubleshooting

4-54Service Manual

Image 114

Contents 114 / F-114P Page Contents Alignment & Troubleshooting Exploded Views & Parts Lists Page Precautions Safety WarningElectric Shock and Fire Safety Precautions Toxic materialHandling Precautions Assembly / Disassembly PrecautionsBe careful with the high temperature part Disregarding this warning may cause bodily injuryESD Precautions Page Product specification and feature Product SpecificationsFcot Items 114Series SPL Twain Summary of Product Printer ComponentsFront View Items 114Series Control Panel Product spec and feature Overview of System Smps Board & Hvps Board Transfer Ass’y System LayoutFeeding section Driver Ass’yCIS Driver Circuit 3.4e Safety FeaturesScan Image Controller Tx Driver CircuitLSU Laser Scanner Unit Toner Cartridge Main Pbaspl Model Sdram Asic Chorus2Flash Memory Main function blockSensor input circuit Smps & Hvps HVPSHigh Voltage Power Supply Consumption Power Smps Switching Mode Power SupplyRated Power Output Length of Power Cord 1830 ± 50mm Power Switch FittedFuser AC Power Control Drive Engine F/WFeeding TransferOPE PBA FusingError Type 6.5 LSUPage General Precautions on Disassembly Releasing Plastic LatchesWhenever servicing the machine, you must perform as follows White Roller Ass,y Rear CoverSide Cover L Side Cover ROPE Unit Remove the seven screws securing the OPE PBA and remove it ADF Rubber Pad CIS Exit RollerFront Cover Assy Scan Assy Scan Motor Assy ADF Roller Sub Hook PBA Drive Assy DC-FanExit Cover Assy LSU-Unit Engine Shield AssyMain PBA Unplug one connector SmpsFuser Assy Unwrap the Thermister Harness, as shown below Transfer Assy Feed Assy Remove the Feed Gear1 Assy Pick up Assy SolenoidPage Alignment and Adjustments Paper pathADF Part Copy & Scan Document PathPrinter Paper Path Engine PartClearing Paper Jams Paper Jam1Bypass Jam Clearing Document Jams 2.1a Input Misfeed2.1b Exit Misfeed Clearing Paper Jams Message Location of JamAlignment & Troubleshooting Paper Exit Area Fuser Area or Around the Toner Cartridge Bypass Tray Tips for Avoiding Paper JamsSound/Volume Machine Setup Maintenance Paper Setting Copy Setup Fax SetupReports Advanced Fax Fax Feature User ModeSF-565PRTo enter the Tech mode Tech ModeHow to Enter Tech Mode Tech Mode settings mapData Setup MethodFlash Upgrade Switch Test Machine TestReport Protocol ListEngine Test Mode To enter the Engine Test Mode To enter the Engine Test modeDiagnostic Identify Sale Date Consumables and Replacement Parts Component Replacement CycleAbnormal Image Printing and Defective Roller Roller Abnormal image period Kind of abnormal imageError Messages Open Heat Error Line ErrorLow Heat Error LSU ErrorOperation NotAssigned NO. Not AssignedNo PaperAdd Paper Paper Jam 0Open/Close DoorTroubleshooting Procedure of Checkig the SymptomsCause and solution of image quality Vertical Black Line and BandVertical White Line Horizontal Black Bands Black/White Spot Light Image Digital PrinterDark image or Black Uneven Density Background Ghost1 Ghost Description Ghost occurs at 66.3 or 75.5 mm intervals Digital Printer Stains on the Face Stains on Back Digital Digital Pri Digital PrinterBlank Page Print out Blank Page Print out Fax & Phone Problems No Dial ToneDefective MF Dial Defective FAX FORWARD/RECEIVE Defective FAX Forward Defective FAX Receive Defective FAX Receive Defective FAX Receive Defective FAX Receive FAX Mode Defective Automatic ReceivingCopy Problems White CopyBlack Copy Abnormal noise Defective Image Quality Paper Feed problems Causes and Solutions Wrong Print PositionJAM PTL Feed JAM Toner Cartridge Multi-Feeding Paper rolled in the fuser Paper rolled on the OPC Drum Printer Faults Causes and Solutions Fuser ErrorLSU Error Fuser gear melts due to overheating causing Paper Jam Paper Empty Paper Empty without indication Cover Open No error message when the cover is open Defective motor operation No Power Printed Vertical Lines become curved Service for the Life of Toner Cartridge Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge 6.2a Redistributing TonerStandard of guarantee for consumable parts Error messages in the LCD window related to tonerSigns and Measures of Poor toner cartridge EndedFault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Software Problems Causes and Solutions Printer is not workingAbnormal Printing Spool Error How to delete the data in the spool manager Page Contents View Top Cover Exploded View OPE Ass’y Exploded View Scan Upper Ass’y Exploded View Service Main Frame Exploded ViewFuser Unit Exploded View Exit Cover Exploded View Cassette Unit Exploded View Page System Diagram Connection Diagram Tool for Troubleshooting DVMDigital Volt MeterAcronyms and Abbreviations HvpsLCD Select a location for the printer Sample Tests Patterns A4 ISO 19752 Standard PatternsPage Page Muratec America, Inc

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