Toshiba 350, 452, 453, 353 service manual Electromagnetic clutches, Solenoids

Page 38

2

(3)Electromagnetic clutches

Symbol

Name

Function

Remarks

P-I

 

 

 

 

 

CLT1

CST-U-FEED-CLT

Driving the upper drawer pickup roller

F

P14 - I29

 

Upper drawer feed clutch

 

 

 

 

 

 

 

 

CLT2

CST-L-FEED-CLT

Driving the lower drawer pickup roller

F

P14 - I29

 

Lower drawer feed clutch

 

 

 

CLT3

SFB-FEED-CLT

Driving the bypass pickup roller and

H

P17 - I20

 

Bypass feed clutch

bypass feed roller

 

 

 

 

 

 

 

CLT4

ADU-CLT

Driving the automatic duplexing unit

I

P32 - I16

 

ADU clutch

 

 

 

 

 

 

 

 

CLT5

RGST-CLT

Driving the registration roller

K

P19 - I31

 

Registration clutch

 

 

 

 

 

 

 

 

CLT6

DEV-CLK

Driving the magnetic roller of the

K

P12 - I36

 

Developer drive clutch

developer unit

 

 

 

 

 

 

 

CLT7

CST-TR-L-CLT

Driving the transport roller

K

P15 - I20

 

Transport clutch (Low speed)

(Low speed)

 

 

CLT8

CST-TR-H-CLT

Driving the transport roller

K

P15 - I16

 

Transport clutch (High speed)

(High speed)

 

 

 

 

 

 

 

(4)Solenoids

Symbol

Name

Function

Remarks

P-I

 

 

 

 

 

SOL1

SFB-SOL

Driving the bypass pickup roller

H

P18 - I11

 

Bypass pickup solenoid

 

 

 

 

 

 

 

 

e-STUDIO350/352/353/450/452/453

2 - 18 © 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved

OUTLINE OF THE MACHINE

 

Image 38
Contents STUDIO350/450 e-STUDIO352/452 e-STUDIO353/453 Trademarks Transportation / Installation Service of MachinesMain Service Parts for Safety Contents Scanner 11-1 12-5 12.412-4 12-7Specifications Set 55.47 54.68 Sets 126.21 118.07 System copy speed Copy mode SecApprox seconds temperature 20C Sets 196.93 181.36Sheets 64 to 80 g/m2 17 to 22 lb Automatic duplexing unit Stackless, Switchback typeLCF-Option Stack height 137.5 mm x 2 equivalent to 80 g/m2 17 to 22 lbSpecifications Accessories Options STUDIO350/450STUDIO352/353/452/453 2nd line for fax board07/11 Supplies System List RadfSTAPLE-2000 12 2003 2008 Toshiba TEC Corporation All rights reserved Outline of the Machine Sectional View04/05  0 22 24 25 2 27 2 2003 2008 Toshiba TEC Corporation All rights reserved Electric Parts Layout Unit constructionLT series Scanner unit Motor, sensor, lampA4 series Control panel unit PC board, heater, thermostat, other partASD/AUD/CND/SAD/TWD models Standard NAD/MJD models Option Process unit Motor, sensor, switch, PC board Motor, sensor, lamp, heater, thermistor, thermostatLaser unit Paper feeder unitTransport unit Bypass unitAutomatic duplexing unit Fuser unitDrive unit CLT5 CLT6 CLT7 CLT8 HVTPC board unit STUDIO350/450STUDIO352/353/452/453 Symbols and Functions of Various Components Sensors and switches SFB-SNR CST-U-SWCST-L-SW SFB-FED-SNRElectromagnetic clutches SolenoidsPC boards Lamps and heaters Thermistors and thermostatsTransformer OthersSystem block diagram General Description2003 2008 Toshiba TEC Construction of boards Construction diagram of boards Function of each boardOutline of the Machine HVT Front left cover Installation and Replacement Covers and PC boardsExternal covers Front cover Open the front cover Remove 1 screw and front left coverRear cover STUDIO350/450 Remove 7 screws and take off the rear coverRight upper cover Left upper coverFront upper cover Upper rear coverTray back cover Receiving trayRemove 2 screws and take off the receiving tray Left coverRight front hinge cover Left rear coverIH terminal cover STUDIO350/352/353/450/452/453Front right cover Right lower coverRight rear cover LGC board unit PC boardsLogic PC board LGC board A-1 LGC board Hard disk / HDD cooling fan Remove 4 screws and take off the hard disk SYS board coverHDD cooling fan System control PC board case SYS board case STUDIO350/450Hard disk 05/1107/11 NIC board NIC board / System control PC board SYS board STUDIO350/450Remove 10 screws, take off the SYS board Switching power supply SYS boardNoise filter Power supply cooling fanHigh-voltage transformer MR-3015 Reversing Automatic Document Feeder Radf Turn OFF the power and unplug the power Cable KD-1011 Paper Feed Pedestal PFPKD-1012 Large Capacity Feeder LCF 44 2003 2008 Toshiba TEC Corporation All rights reserved MJ-1022 Hanging finisher D-1 When PFP/LCF is not installed Lift up the equipment and take off the LCFWhen PFP/LCF is installed Remove 2 screws Lift up the finisher and take it offMJ-1023 Console finisher 48 2003 2008 Toshiba TEC Corporation All rights reserved MJ-1024 Console finisher MJ-6004 Hole punch unit Outline of the Machine 52 2003 2008 Toshiba TEC Corporation All rights reserved Lift up the punch unit and take it off KN-3520 Bridge unitMJ-5004 Job separator Outline of the Machine MJ-5005 Offset tray MR-3018 Reversing Automatic Document Feeder Radf 58 2003 2008 Toshiba TEC Corporation All rights reserved MJ-1101 Console finisher MJ-6101Hole punch unit60 2003 2008 Toshiba TEC Corporation All rights reserved Remove 2 screws Take off the hole punch unit 62 2003 2008 Toshiba TEC Corporation All rights reserved Copy Process General Description of Copying ProcessDetails of Copying Process ExampleImage processing sec Tion Example CCD light Value of image Magnet Magnetic roller Toner 30-100 µm Additional Explanation Charger Separation charger during printing. As the result Paper may not be separated from the drum surfaceBecause of moisture or malfunction of the transfer Used to forcibly separate the paper which was leftRecovery blade Cleaning blade Drum rotation Comparison with DP4500/3500 Copying operation Bypass feed copying Interrupt copying Overview of OperationDescription of Operation Warming-upReady state ready for copying Drawer feed copying Upper drawer paper feedingGeneral Operation Page Press the Interrupt button Bypass feed copyingInterruption copying Detection of Abnormality Types of abnormalityDescription of abnormality General Operation Paper jam E010 → The copying operation is stopped. Timer Paper jam E010Paper jam E020 General Operation Flow Chart Immediately after the power is turned onYES Automatic paper feed copying Paper jam E00Ready 16 2003 2008 Toshiba TEC Corporation All rights reserved Control Panel Control Panel and Display PanelItems Shown on the Display Panel Display Change Drawer To Correct Paper Size Saddle StitchTray Full Ready CopyingThis Size Paper Check PaperLarge Capacity Feeder Cannot Punch To Correct Media Type Press Basic DepartmentCounter According to the messages displayed Radf Dot matrix LCD circuit StructureSystem control PC board Control panel Method of LED display ex Displaying Copy Data TransmissionLED display circuit Disassembly and Replacement DSP board Hinge bracketRemove 16 screws and take off the KEY board KEY boardScanner FunctionConstruction Mirror-2 Mirror-3 Scan motor Scanning drive circuit Moten MotclkMotdir MotrefInitialization at power-ON Control of Exposure Lamp General descriptionExposure lamp Working conditions Control circuit for the exposure lampSLG board Shading correction General Description of CCD ControlOpto-electronic conversion Process of detection of original size Automatic Original Size Detection CircuitPrinciple of original size detection A4 Series LT SeriesStlt When the platen sensor is OFF APS-C APS-RLED Automatic original detection sensor APS sensor A4 series Original glassLens cover ProtrusionLT series 704LLens unit Rear side Carriage-1Remove 2 seals and release the cable Fix it with a seal After the installation, move carriage-1With the position as shown in the figure Align the bent portion of the lampMirror-1 Carriage wire / Carriage-2Rear sides Remove the carriage wires on both front INV boardMirrors-2 Platen sensor / Carriage home position sensorSLG board 24 2003 2008 Toshiba TEC Corporation All rights reserved Image Processing Followings are the boards used for image processingSignal amplifi Configuration Features SLG BoardFunctions of image processing circuit After correction Example Enlargement Example Reduction 2003 2008 Toshiba TEC Corporation All rights reserved LGC Board ON/OFF control of the semiconductive laser APC Auto Power ControlLaser Driving PC Board LDR board Laser Optical Unit Drve PC board Structure Laser beam Drum Devaton Laser Optical Unit Rent reaches or becomes larger than the threshold Light emission is started when the forward curLaser Diode Current and outputs the monitor current which isDrive circuit of the polygonal motor Laser Optical Unit Cooling FanPolygonal Motor Laser optical unit Laser unit fan LRL PC boardFunctions   20,2 Feeding system Paper Feeding System Paper Feeding System Operation of drawer pickup roller OperationOperation of bypass pickup roller Separation of paper Feed rollerBypass feeding General operation From power-ON to ready statusReady status Paper feeding Drive Circuit of Tray-up Motor IN1 IN2Screw Bypass unit A-1 Bypass unitRemove 2 screws and take off the right rear hinge cover Hinge assembly Open the side coverSFB board Pull out the hinge assembly from the bypass trayHinge assembly Plate Bracket SpringSolenoid arm Bypass pickup solenoidSolenoid Bypass paper sensor Bypass pickup rollerBypass feed roller Bypass transport rollerDrive unit Bypass feed clutchBypass separation roller Bypass feed sensor Sensor plateLower drawer feed sensor Disconnect 3 connectorsDisconnect the connector on the front side Jam access cover Terminal Lead wireConnector CoverUpper drawer Feed sensorRegistration roller SetscrewDrive gear unit Screw Ring Bushing Registration Roller Tray drive unit/Tray-up motor Paper Feeding System Lower transport Transport clutch upper/lowerUpper transport clutch ClutchDrawer feeding unit upper/lower H-1 Drawer feeding unit Drawer detection switch upper/lowerAttach the clutches to the shafts as shown on the right Tray-up sensorPaper stock sensor Separation rollerDrawer feed clutch Feed rollerPickup roller 0.5mm Drive System Main Motor 10.3.1Main motor drive10.3.2Control signals Signal names are for the connector CN318 LGC boardGear unit Main motorRegistration clutch Developer drive clutch Drive System Drum Related Section 11 2003 2008 Toshiba TEC Corporation All rights reserved Detection standard line Drum Related Section Description of operations Output Control Circuits of High-Voltage TransformerOverview CN30-B7 Hvdvr Drum Temperature Detection Circuit Drum temperature detection circuit11.5.2Construction Temperature/Humidity Sensor11.5.1General description Main charger grid Cleaner unitMain charger B-1 Main charger Main charger wire Charger wire cleaning padDrum Seal Cleaner Cleaning bladeCleaning blade Recovery blade Separation fingerCharger wire Exhaust fan / Sub-separation fanDischarge LED Toner bag full detection sensor-2 Developer unit cooling fan I-1 Developer unit cooling fan-2Developer unit cooling fan-1 Developer unit cooling fan unit-1Middle fan Temperature / Humidity sensor 11 20 2003 2008 Toshiba TEC Corporation All rights reserved Development System Sectional view of developer unitFunctions Drive Circuit of Toner Motor Auto-Toner Circuit STUDIO352/353/452/453 STUDIO350/450Function of auto-toner sensor Drve ndng Adjustment using the temperature / humidity sensor Adjustment using the drum thermistorDeveloper unit Developer material Discharge of developer materialGuide roller Front side Guide roller Rear sideRemove 1 E-ring and 4 gears Take off the guide roller Auto-toner sensor Drum thermistorReplace the oil seal on the shaft on the de Replacement of Oil SealDeveloper sleeve Veloper sleeve rear side, if necessaryOil seal Mixer-1Mixer-2 BushingToner cartridge drive unit I-1 Toner cartridge drive unit Rice grains on entire surface of the oil seal Evenly Toner cartridge detection switchToner motor Wipe off the excessive grease12 16 2003 2008 Toshiba TEC Corporation All rights reserved Fuser Unit / Paper Exit Section 13 2003 2008 Toshiba TEC Corporation All rights reserved Fuser Unit / Paper Exit Section Circuit Configuration13.4 13.4.1Image of current flowng from a to B 13.4.2Heating principle of IH HeaterVDD IH control circuit interfaceIH2 on IH1 onFAX 13.4.5Temperature detection section Control of the surface temperature of the fuser beltEnergy Saver Reference CPU Checking timing Condition Temperature judged Error 13.4.6Abnormality in the IH control circuit H1ERR1 CPU PA2 H1ERR2 PA3IH error Control Circuit of Exit Motor Exit Motor DriveFuser unit cooling fan Harness clampExit sensor Exit fingerSeparation finger for fuser roller Cleaning rollerSeparation finger for pressure roller Stepped screwFuser Unit / Paper Exit Section Pressure roller IH coilFuser roller Thermistor Take off the IH terminal cover Chapters 2.5.1 L ThermostatIH control PC board IH board IH board unit IH board cooling fanMetal bushing Exit motorExit roller Take off the lower exit roller Automatic Duplexing Unit ADU Description of Operations 2003 2008 Toshiba TEC Corporation All rights reserved Automatic Duplexing Unit  2 2003 2008 Toshiba TEC Corporation All rights reserved Timing chart for duplex copying from upper PmentEquEqupment Drive of ADU Yes Yes Right front hinge cover Screw Right rear hinge coverTape ADU inside rear coverSnap pin ADU insideADU cover ADU opening / closing switchPaper guide Rear latchADU entrance sensor, ADU exit sensor Remove the screw and release the rear latchOpening /Closing lever Rear latchADU gear unit ADU driving PC board ADU boardADU motor MotorADU clutch ADU clutchUpper transport roller Pin Remove the clip on the front sideRemove 2 bushings and take off the upper BeltMiddle transport roller Lower transport roller 14 20 2003 2008 Toshiba TEC Corporation All rights reserved Power Supply Unit Operation of DC Output CircuitsOutput Channel Power Supply Unit PFP/LCF FuseLGC SLGConfiguration of Power Supply Unit STUDIO350/352/353/450/452/453 Power Supply UnitPWR-EN Sequence of Power SupplyPWR-DN AC Wire Harness 2003 2008 Toshiba TEC Corporation AllPower Supply Unit PC Boards PWA-F-SYS e-STUDIO350/450STUDIO352/353/452/453 PWA-F-LGC e-STUDIO350/450 STUDIO352/353/452/453 PWA-F-SLG e-STUDIO350/450 STUDIO352/353/452/453 PWA-F-CCD PWA-F-ADU PWA-F-DSP e-STUDIO350/450 STUDIO352/353/452/4532003 2008 Toshiba TEC Corporation All rights reserved PWA-F-FUS ASD/AUD/CND models Standard, MJD model Option
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350, 353, 453, 452 specifications

The Toshiba 452, 282, and 352 models represent a significant leap in multifunction printing technology, designed for office environments that prioritize efficiency, reliability, and advanced features. These models are part of Toshiba's commitment to innovation and sustainability, emphasizing quality output while reducing environmental impact.

One of the standout features of the Toshiba 452, 282, and 352 is their exceptional print quality. These multifunction printers utilize a high-resolution printing technology that ensures sharp text and vibrant images, making them suitable for a wide range of business applications, from standard documents to high-quality marketing materials. The printers are equipped with a versatile paper handling system, allowing users to accommodate various paper sizes and types, thereby enhancing their overall productivity.

In terms of speed, these models deliver impressive performance, with the capability to print up to 45 pages per minute for the 452, 28 pages per minute for the 282, and 35 pages per minute for the 352. This high-speed output is coupled with a fast first-page out time, ensuring that users spend less time waiting and more time focusing on their core business activities.

Moreover, the Toshiba 452, 282, and 352 are designed with user-friendly interfaces. Their intuitive touch-screen displays simplify navigation and operation, allowing users to quickly access frequently used functions. Customizable workflows and one-touch shortcuts further enhance usability, enabling employees to optimize their time in busy office settings.

Another crucial aspect of these models is their commitment to energy efficiency. Toshiba employs advanced technologies to ensure that the printers consume less power without compromising on performance. This not only helps businesses reduce their carbon footprint but also contributes to cost savings on energy bills.

Security is another critical feature integrated into the Toshiba 452, 282, and 352. With the increasing importance of data protection, these printers offer robust security measures, such as user authentication, secure printing, and data encryption. These features help safeguard sensitive information and ensure compliance with industry regulations.

Additionally, the multifunction capability of these printers allows them to serve as copiers, scanners, and fax machines, providing a comprehensive solution for office document management. Their ability to scan documents to email or to network folders enhances collaboration among team members.

In summary, the Toshiba 452, 282, and 352 models are versatile multifunction printers that offer a blend of speed, quality, and user-friendly features. Their commitment to sustainability and security makes them ideal choices for modern office environments looking to enhance productivity and efficiency.