Toshiba 4511, 3511 manual Black Toner Cartridge Drive Unit, General descriptions, Toner motor

Page 215

12.4 Black Toner Cartridge Drive Unit

12.4.1 General descriptions

The black toner cartridge is filled with black toner, and supplies the toner to the black developer unit by rotating the toner cartridge with the drive of the toner motor. The black toner cartridge detection switch ensures that the black toner cartridge is in rotation by detecting the protrusion of the toner cartridge. Also, the auto-toner sensor detects whether the toner cartridge is empty by detecting the toner density ratio of the black developer unit.

12.4.2 Toner motor

The toner motor supplies toner to the black developer unit from the toner cartridge. It is driven by the motor driver IC (TA8428K) through an overcurrent protection device. The overcurrent protection device is mounted to protect the toner motor and toner motor driver. When the motor abnormality occurred and the motor drive current exceeding the specified level surged, internal resistance of the overcurrent protection device becomes high to cut off the current.

Its circuit configuration is shown below.

 

 

Motor driver

 

Overcurrent

Toner motor

 

TD62385

TA8428K

 

PE0

protection

KTNA1A

 

device

 

PE2

 

KTNA1B

Gate array

 

 

 

 

 

 

 

LCA301-2

 

 

 

 

 

PB7

 

 

 

 

KTNDET

 

 

 

 

 

Black toner

 

 

 

 

 

cartridge

 

 

 

Fig. 12-401

 

 

Signal level for motor circuit

 

 

Signal

State

 

 

 

 

 

KTNA1A-0

KTNA1B-0

 

 

 

 

 

 

 

L

 

L

OFF

 

 

 

 

 

Level

L

 

H

CW (when supplying toner)

 

 

 

 

 

 

H

 

L

CCW (detecting cartridge installation)

 

 

 

 

 

 

H

 

H

Brake

12

November 2003 © TOSHIBA TEC

12 - 3

e-STUDIO3511/4511 DEVELOPER UNIT

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Contents STUDIO3511/4511 Toshiba TEC Corporation Service of Machines General Precautions Regarding the InstallationMain Service Parts for Safety Contents Control circuit for the exposure lamp Control Panel10-5 10.110-1 10.212.3 12.112-1 12.215.3 15.115-1 15.2STUDIO3511/4511 Contents November 2003 Toshiba TEC Specifications SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIESADU PFP LCF System copy speedM2 17-22 lb. Bond Automatic duplexing unit Stackless/switchback typeTo 550 sheets 64-80 g/m2 17-22 lb. Bond Sheets 64-80 g/m2 17-22 lb. Bond718 Accessories Supplies OptionsSTAPLE-600 System ListSTAPLE-2000 RadfSTUDIO3511/4511 Specifications November 2003 Toshiba TEC Front side view Outline of the MachineSectional View Toner recovery auger Recovery bladeDrum cleaning blade Drum cleaner brushRear side view Drive system Transport motor Drum cleaner brush motorScan motor Main motorFront side Electric Parts LayoutUnit construction EXP Scanner unit Motor, sensor, lampA4 series LT seriesControl panel unit Switch, PC board, heater, thermostat, other partDH1 ASD/AUD/CND/SAD/TWD models Standard NAD/MJD models OptionProcess unit Motor, sensor, switch, clutch, solenoid Laser unit Motor, switchS25 S26 M13 Front side CLT5 Paper feeder unitTransport unit CLT3ADU CLT7 Bypass unitAutomatic duplexing unit SFB CLT6 SOL3Drive unit Fuser unitHDD NIC BRK PC board unitLGC SYS Symbols and Functions of Various Components Sensors and switches CST-L-TRY-SNR CCL-F-POS-SWCCL-R-POS-SW CST-U-TRY-SNRSolenoids Electromagnetic clutchesPC boards Thermistors and thermostats Lamps and heatersOthers Transformer24GeneralDescription Function of each board CCD board Construction of boards Construction diagram of boardsPage HVT Receiving tray Disassembly and Replacement of Covers and PC boardsCovers Front cover / Toner bag Left cover Tray back coverFront lower cover Front right coverRight upper cover Left rear coverLeft upper cover Front upper coverRight rear cover IH terminal coverRear cover Right lower coverRight rear hinge cover Right front hinge coverUpper rear cover Hard disk HDD PC boards Logic PC board LGC board A-1 LGC board caseLGC board System control PC board case SYS board case NIC board / System control PC board SYS board Remove 4 screws and take off the SYS board caseFlow Power supply unitHigh-voltage transformer Fuse board FUS board Noise filterOptions MR-3015 Reversing Automatic Document Feeder Radf Driving PC board DRV boardPage KD-1011 Paper Feed Pedestal PFP Heater is installedKD-1012 Large Capacity Feeder LCF Page Lift up the equipment and take off the LCF MJ-1022 Hanging finisher When PFP/LCF is not installedRemove 2 screws Lift up the finisher and take it off When PFP/LCF is installedPage MJ-1023 Console finisher MJ-1024 Console finisher Page MJ-6004 Hole punch unit Page KN-3511 Bridge unit Remove 2 screws Lift up the punch unit and take it offNovember 2003 Toshiba TEC Expression of Colors and 4-Step Copy Process Copy ProcessPhotocon General Description of Copying ProcessDetails of Copying Process CCD board White background Image is not Developed Photoconductive Photoconductive Layer Aluminum Base Blade cleaning Recovery blade Drum rotation List of Copying Process Conditions Pressure roller Silicon sponge STUDIO3511/4511 Copy Process November 2003 Toshiba TEC Warming-up General OperationOverview of Operation Description of OperationDrawer feed copying Upper drawer paper feeding Ready ready for copyingPage Page Scan motor fwd Interruption copying Bypass feed copyingDescription of abnormality A-1 Add paper Detection of AbnormalityTypes of abnormality STUDIO3511/4511 General Operation November 2003 Toshiba TEC Paper jam E010 → The copying operation is Stopped Registration clutch turned on ↓ Approx 1.2 secApprox 1.2 seconds Paper jam E020 → The copying operation is Exit sensor detects jamming of the trailing edge PaperRegistration clutch turned OFF After approx 1.3 secondsNovember 2003 Toshiba TEC STUDIO3511/4511 General Operation Power on to ready Flow ChartReady Automatic feed copying Main charger on YES Control Panel and Display Panel Control PanelItems Shown on the Display Panel Display Copying Saddle StitchTray Full Ready Change Drawer To Correct Paper SizeThis Size Paper Check PaperLarge Capacity Feeder Cannot Punch Counter DepartmentTo Correct Media Type Press Basic Radf Structure Dot matrix LCD circuitLoad Frame Data TransmissionFrame Method of LED display ex Displaying Copy LED display circuitSlide the stopper and pull it out Disassembly and ReplacementStopper November 2003 Toshiba TEC STUDIO3511/4511 Control Panel Remove 16 screws and take off the KEY board Function ScannerConstruction Mirror-2 Mirror-3 Scan motor PS-ACC-350 Scanning drive circuitInput/output signals On no YES Initialization at power-ONOnno YES OFF YESCPU Control of Exposure LampGeneral description PWA-CCD CCD PWA-CCDPWA-SLGExposure lamp Control circuit for the exposure lamp Shading correction General Description of CCD ControlOpto-electronic conversion Process of detection of original size Automatic Original Size Detection CircuitPrinciple of original size detection APS-1 APS-2 APS-3ST-R APS-C APS-R APS-1 APS-2 APS-3APS-C APS-R APS-2 APS-3 Original LEDPhototransistor SLG board cooling fan Original glassLens cover LT series Automatic original detection sensor APS sensor A4 seriesLens unit Carriages-1 Carriage-1 Carriage Refer to the Service Handbook for more details Scanning section control PC board SLG board Platen sensorCarriage home position sensor Followings are the boards used for image processing Image ProcessingGeneral Description CCD Asic ACS Configuration-201 shows the image processing section of this equipment AsicSYS Board PWA-F-SYS-350 FeaturesExample Functions of image processing circuit’ = + b + Example Reduction Example EnlargementPaper November 2003 Toshiba TEC STUDIO3511/4511 Image Processing Laser Driving PC Board LDR Board LGC Board PWA-F-LGC-350Laser Optical Unit Writing Section Overview Structure STUDIO3511/4511 Laser Optical Unit November 2003 Toshiba TEC Deviation STUDIO3511/4511 Laser Optical Unit November 2003 Toshiba TEC Laser power comparison circuit Laser driver Circuit Constant Polygonal Motor Polygonal motor ON/OFF signalPolygonal motor reference clock signal Laser Unit Cooling FanLaser optical unit Laser unit cooling fan Drive System Construction Main MotorDrive circuit of main motor Signal level of motor circuitTransport Motor Drive circuit of transport motor Developer Motor Normal Out of control Developer motor PLL signal Developer motor on signalDeveloper motor rotational direction signal Developer motor reference clock signalDeveloper motor drive unit Black developer lifting clutch Developer motorRemove 2 screws and take off the developer motor Transport motor drive unit Setscrew Transport motor drive unit Connector Main motor drive unit Tension plate Motor STUDIO3511/4511 Drive System November 2003 Toshiba TEC General Descriptions Paper Feeding SystemPage Paper Feeding Section Sectional View Front side Paper Feeding Section Drive System Rear side Operation of bypass pickup roller Operation of drawer pickup roller Separation of paper Bypass feeding General operation From power-ON to ready statusReady status Drawer feedingD-1 Lower drawer Stop Drive Circuit of Tray-up MotorIN1 IN2 Brake CCW Bypass unit A-1 Bypass unit Bypass tray slide guide width detection PC board Bypass pickup roller Bypass transport rollerBypass paper sensor Bypass pickup solenoidBypass separation roller Bypass feed rollerBypass feed sensor Lower drawer feed sensor/Side cover opening/closing switchRemove the arbor, shaft and spring Upper drawer feed sensor/Registration sensor Registration roller Remove 1 screw and take off the separation roller holder Drawer feeding unit E-1 Drawer feeding unitFeed clutch Separation rollerCLUTCH-6-L Pickup rollerDrawer paper stock sensor Remove the pulley, one-way clutch and 3 E-ringsFeed roller 6Drawer tray-up sensor and Drawer empty sensorTray drive unit Tray drive unitRegistration guide Lower transport clutch Low/High speedMiddle guide Drum Related Section Functions Page IC7 Output Control Circuits of High-Voltage TransformerCPU Drum Temperature Detection CircuitTemperature/Humidity Sensor Operation Charger Wire CleanerDrive circuit Cleaner unit Cleaner unit Main charger grid Main charger unit B-1 Main charger unitRemove 1 screw and take off the pad guide Charger wireWire pad Drum Remove the baseDrum cleaner brush Cleaner Drum cleaning bladeRecovery blade Remove the discharge LED Drum thermistorDischarge LED unit F-1 Discharge LED Charger cleaner detection switch Charger cleaner motorToner bag full detection sensor-2 Ozone exhaust fan Temperature/Humidity sensorOzone filter Latch Page Developer Unit Color auto-toner sensor Mixer Developer sleeve Toner motor Black Toner Cartridge Drive UnitGeneral descriptions Functions Black Developer UnitBlack developer unit drive section Converter Black auto-toner sensor circuitLCA301-1 Magnetic circuit STUDIO3511/4511 Developer Unit November 2003 Toshiba TEC Black developer unit lifting mechanism Color Developer Unit Gear G21 Color developer unit drive sectionColor auto-toner sensor circuit Page Color toner supply CDVDON-0 CDVAON-0 High-Voltage Transformer Output Control CircuitDeveloper material Black developer unit A-1 Black developer unitDoctor blade Pour the developer materialAuto-toner sensor Developer sleeve Remove 2 screws and take off the doctor bladeMixer Color developer unit B-1 Developer material Take off the mixer from the hole of front sideDischarge the developer material Pour the developer material Gear assembly Procedure for replacing an oil seal Take off the black developer toner supply unit .7 K Black developer lifting unitBlack toner supply unit Remove 2 screws and take off the cleaner rail stayCartridge switch with the whole bracket Black toner supply auger unit Remove 2 screws and take off the toner motorSTUDIO3511/4511 Developer Unit November 2003 Toshiba TEC Revolver Unit STUDIO3511/4511 Revolver Unit November 2003 Toshiba TEC Drive of Revolver Unit Revolver motor Revolver Motor Drive CircuitDuring warming-up OperationHome position detection Escape position movementDuring image quality control Color developer unit Color toner cartridgeRear Front Color toner cartridge sensorRemove 1 screw and take off the color toner cartridge sensor Revolver home position sensor Revolver unit Lock lever Remove 5 screws and take off the bracket Internal cooling fan Transfer Unit STUDIO3511/4511 Transfer Unit November 2003 Toshiba TEC Page Outline of 2nd transfer Outline of 1st transferPWA High-Voltage Power SupplyLCA-301-1 1000VTransfer belt unit Loosen 3 screws and take off the bracket Transfer belt Stand plate short 1st transfer roller Transfer belt home position sensor-2 Transfer belt home position sensor-1Transfer belt cleaning unit Remove 1 screw and take off the bracket on the front side Conductive tape Harness clamp Transfer belt cleaner auger motor 2nd transfer unit 2nd transfer roller2nd transfer roller contact clutch Paper clinging detection sensor 2nd transfer roller position detection sensorPaper clinging detection sensor Bracket Page Principle of the Sensor Image Quality ControlYES Flow Chart of Control ProcedureVarious image forming conditions Image quality sensor / Image quality sensor Shutter solenoid Fuser Unit / Paper Exit Section Functions Page Heater Control Circuit ConfigurationImage of Current Flowing form a to B Book Diagram of High Frequency Power SupplyHeating principle of IH Heater IH1 on IH control circuit interface+5VSW IH2 onFAX For ASD, AUD, CNDOFF Control of the surface temperature of the fuser belt Temperature detection sectionEnergy Saver Reference PC4/AN4 Condtion Priority of error checking Abnormality in the IH control circuit IH error Exit Motor Drive Control Circuit of Exit MotorOil roller Rear side Cleaning rollerFuser roller / Fuser belt guide IH coilBearing Fuser belt guide Fuser belt Separation finger Separation finger unit Thermostat Pressure rollerThermistor Remove 2 screws and take off the thermostat from the bracketExit sensor / Exit finger / Transport guide Exit roller IH control board cooling fan IH control PC board IH boardScraper FlowAutomatic Duplexing Unit ADU Description of Operations Page Page Page Unit msec EquipmentADU entrance sensor ADU exit sensor ADU clutch ADU motor Exit sensor Registration sensor Registration clutchDrive of ADU Yes Command signal Operation of DC Output Circuits Power Supply UnitOutput Channel November 2003 Toshiba TEC STUDIO3511/4511 Power Supply Unit F54A Semi time-lag +24VD4 Charger cleaner motor Power supply Power supply cooling fanFuse Bridge unit +24VD2Toshiba Configuration of Power Supply UnitPWR-EN Sequence of Power SupplyPWR-DN Scanner AC Wire HarnessSTUDIO3511/4511 Power Supply Unit November 2003 Toshiba TEC PC Boards PWA-F-LGC PWA-F-SLG PWA-F-CCD PWA-F-SDV PWA-F-DRV PWA-F-ADU PWA-F-LDR PWA-F-SNSPWA-F-DSP PWA-F-KEY PWA-F-FUS ASD/AUD/CND models Standard, MJD model Option PWA-F-FILNAD/SAD/TWD models Standard STUDIO3511/4511 PC Boards November 2003 Toshiba TEC Page Kanda NISHIKI-CHO, CHIYODA-KU, TOKYO, 101-8442 Japan
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