Muratec F-114P service manual Smps Board & Hvps Board

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Product spec and feature

- SMPS Board & HVPS Board

These are integrated into a singe PBA. The Power Supply uses the 110VAC/220VAC supply voltage to generate the DC Voltages used by the system. The SMPS has 3 output channels (+5V, +12V, +24V, +24VS) and supplies the Main Board and the OPE Board.

The HVPS creates the high voltages (THV/MHV/Supply/Dev) used for the electrophotographic process. The high voltage is created from the 24VS line from the SMPS. High Voltage output is supplied to the Toner, the OPC Cartridge and the Transfer Roller.

- OPE Board

The Operation Panel is driven by its own internal program using the OPE MICOM chip separate from the Main Board processor. Data is transferred using the UART Port in the Main Controller serially. This unit

consists of the MICOM, the Key Pad Matrix and the LCD.

- Toner Cartridge

The Toner Cartridge consists of integrated Exposure and Developer units. The Exposure Unit consists of the OPC Drum and the Charge Roller, and the Developer Unit consists of the toner particles and its tank, the Supply Roller and the Developer Roller.

- LSU (Laser Scanner Unit)

This is the core of the laser printer. It converts the video data received from the computer into an electrostatic latent image on the surface of the OPC drum. This is achieved by controlling the laser beam and exposing the sur- face of the OPC drum to the laser light. A rotating polygon mirror reflects the laser light onto the OPC and each side of the mirror is one scan line. The OPC drum turns as the paper feeds to scan the image down the page.

The /HSYNC signal is created when the laser beam from LSU reaches the end of the polygon mirror and this sig- nal is sent to the controller. The controller detects the /HSYNC signal to adjust the vertical line of the image on paper. In other words after the /HSYNC signal is detected the image data is sent to the LSU to adjust the left mar- gin on the paper.

- Toner Transfer

Toner is transferred from the OPC drum onto the paper using a PTL (Pre-transfer Lamp) and a transfer roller. The PTL shines light onto the OPC, this reduces the electrical charge on the surface of the OPC

surface and improves the efficiency of the transfer.

The transfer roller transfers toner from the OPC drum to the paper. Life span: Print over 100,000 sheets (at 15~30ºC)

- Fuser

This consists of a heat lamp, heat roller, pressure roller, thermistor and thermostat. By use of heat and pressure toner is caused to melt and adhere to the paper surface in order to complete the printing process.

Service Manual

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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 Printer Components Summary of ProductFront 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 Releasing Plastic Latches General Precautions on DisassemblyWhenever 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 PartPaper Jam1 Clearing Paper JamsBypass 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 ListTo enter the Engine Test Mode To enter the Engine Test mode 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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