Muratec F-114P service manual Engine F/W, Feeding, Drive, Transfer

Page 34

Product spec and feature

2.2.6 Engine F/W

2.2.6.1 Feeding

If feeding from the cassette the drive of the pickup roller is controlled by controlling the pick-up solenoid. The on/off of the solenoid is controlled by controlling the general output port or the external output port. If feeding from the manual feeder the set decides to feed the paper according to the operation of the manual sensor, and by driving the main motor, insert the paper in front of the feed sensor. When paper moves the occurrence of a paper jam is judged as below.

2.2.6.1(a) Jam 0 – Jam in Feed area

•After a page was picked up, paper did not enter the unit due to a paper misfeed.

•After a page was picked up, paper entered but it did not reach the feed sensor in certain time due to slip, etc.

•After a page was picked up, if the feed sensor is not on try to pick up again. After retrying if the feed sensor is still not on after certain time, it is Jam 0.

-this indicates that the leading edge of the paper doesn't pass the feed sensor within a certain time.

•Even though the paper reaches the feed sensor, the feed sensor does not turn on.

-this indicates that the leading edge of the paper already passed the feed sensor or that the sensor is fauty.

2.2.6.1(b) Jam 1 – Jam inside the print engine

•After the leading edge of the paper passes the feed sensor, the trailing edge of the paper does not pass the feed sensor within certain time. (During this time the feed sensor cannot be Off)

•After the leading edge of the paper passes the feed sensor, the paper does not reach the exit sensor with- in certain time. (The exit sensor cannot be On during this time)

-There is already paper between the feed sensor and the exit sensor.

2.2.6.1(c) Jam 2 – Jam in the Exit area

•After the trailing edge of the paper passes the feed sensor the trailing edge of the paper does not pass the exit sensor within certain time.

2.2.6.2 Drive

The main motor drives the paper feed, developing unit and the Fuser It is driven by software which controls the acceleration, constant speed and deceleration profiles. The Motor is managed with an A3977 driver IC and controlled by step and enable signals from the CPU.

2.2.6.3 Transfer

The charging voltage, developing voltage and the transfer voltage are controlled by PWM (Pulse Width Modulation). Each output voltage is changeable according to the PWM duty cycle. The transfer voltage used when the paper passes the transfer roller is decided by environment recognition. The resistance value of the transfer roller changes due to the surrounding environment in the room or within the set, this change in resistance in turn changes the value of the voltage due to loading. This voltage is fed back into the set through the A/D converter. Based on this fed back value the PWM cycle is changed to maintain the required transfer voltage

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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