Toshiba MR-3018 Symbols and Functions of Various Components, Motors, Sensors and Switches

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2.4Symbols and Functions of Various Components

1) Motors

Symbol	Name	Function

M1	Original feed motor	Drives the original feed roller, pickup roller and registration roller.

M2	Read motor	Transports originals by driving the intermediate transport roller,
		front read roller, rear read roller and reverse registration roller.
M3	Original exit/reverse motor	Drives the original exit/reverse roller.

M4	Fan motor	Cools off the ADF drive section and ADF board.

2) Sensors and Switches

Symbol	Name	Function

S1	Original tray sensor	Detects the length of the original set on the original tray.

S2	Original tray width sensor	Detects the width of the original set on the original tray.

S3	Original empty sensor	Detects the original set on the original tray.

S4	Original length detection	Detects the length of the original.
	sensor
S5	Original registration sensor	Detects transport of the original at the registration roller section.

S6	Original width detection sen-	Detects the width of the original.
	sor-1
S7	Original width detection sen-	Detects the width of the original.
	sor-2

S8	Original intermediate trans-	Detects the original transported to the Pre-scanning section.
	port sensor
S9	Read sensor	Detects the leading edge of the original at the original scanning section.

S10	Original exit/reverse sensor	Detects the exit (transit) of an original. Also detects the stop reference
		position for an original when in reverse.
S11	Jam access cover sensor	Detects opening/closing of the Jam access cover.

S12	RADF opening/closing sen-	Detects opening/closing of the RADF.
	sor

SW1	Jam access cover opening/	Switches between cutoff and supply state of the 24 V power by open-
	closing switch	ing/closing of the jam access cover.

3) Solenoid

Symbol	Name	Function

SOL1	Original pickup solenoid	Drives up and down the original pickup roller.

SOL2	Gate solenoid	Drives the reverse flap. (Switches the flap to the reverse side when
		turned to ON.)

4) PC board

Symbol	Name	Function

ADF	RADF control PC board	Controls the RADF.
	(ADF board)

MR-3018/3020/3021/3022	© 2005 - 2011 TOSHIBA TEC CORPORATION All rights reserved
GENERAL DESCRIPTION

2 - 4

06/06

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Contents MR-3018/3020/3021/3022 Trademarks 11/1211/12 Page Contents Circuit Diagram / Harness Diagram Rewriting ROM Firmware UpdatingSpecifications MR-3018/3020 MR-3021/3022Specifications Main Components Location Components06/09 Sectional View Electric Parts Layout S12S11 S7 S6 S5 S8S4 S10Symbols and Functions of Various Components Sensors and SwitchesMotors SolenoidDiagram of Signal Blocks Description of Interface Signals Outline Feed motor drive sectionRead motor drive section Original feed motor drive section Read motor drive section Intermediate transfer rollerOriginal exit/reverse motor drive section Gate solenoid Reverse flap Exit/reverse motorReverse Exit/reverse rollerOriginal Size Detection Original tray width sensor= high level Open = low level Short Original width sizeA4 series width sizes mixed at A3 / A4 standard A4 series width sizes mixed at B4 / B5 standardA4 series width sizes mixed at A4-R standard A4 series width sizes mixed at B5-R standardLT series ORG-SRS LT series width sizes mixed at LD / LT standardLT series width sizes mixed at LG / LT-R standard Power on Standby Radf jam access Cover OPEN? All sensors OFF?Empty sensor ON? JamOriginal Certain period Time passed?Read motor rotates Registration roller rotates. Feed motor rotates reverseScanning start signal Certain periodDuplex? Sent level HighOriginal exit/reverse Sensor ON? Jam Read sensor OFF?Certain period Time passed? Read motor stops Certain period Time passed?Scanning start signal sent level Low Scanning completed Gate solenoid onTransport request Signal received? Jam Original exit/reverse motor and read motor stopRead motor and exit/reverse motor rotate at requested speed Exposure and scanning start Original Scanning completedSensor OFF? Original exit/reverse motor and read motor stop Original intermediate Transport sensor ON?Jam Original exit/reverse Sensor OFF? Description of Circuit Drive Circuit for Feed MotorDrive Circuit for Read Motor Drive Circuit for Exit Motor Drive Circuit for FAN MotorReset Circuit Drive Circuit for Pickup SolenoidDrive Circuit for Gate Solenoid Cover Front coverFront cover Jam access cover Rear coverRear cover PinTake off the jam access cover by sliding it Remove 1 screw and the hinge pinLeft cover Left coverOriginal tray Original reverse tray Original reverse trayRoller Paper feeder unitRemove 1 clip and slide 2 bushings Take off the paper feeder unitPickup roller PM Feed roller PMShaft Clip Pickup rollerSlide the pulley and remove 1 pin Pull out the shaft and take off the feed rollerPulley ShaftSeparation roller PM Take off the jam access guide Feeder lower guideStay Registration roller Exit/reverse rollerExit guide Exit/reverse rollerPre-reading guide Intermediate transport rollerHinge pin Pre-reading guideConnector Pre-reading rollerPost-reading roller Screw BushingFlange Bearing Bushing BushingHolder Platen guideReverse registration roller Upper guidePost-reading roller RingOpen the RADF. Take off the reverse regis- tration roller RollerMotor / Motor drive section Fan motor M4Read motor M2 Read motorRead motor drive section SpringSpring Harness clampRemove 3 screws and then take off the bracket Take off 1 timing belt and 4 bushingsTiming belt Screw Tensioner RingOriginal feed motor M1 Original feed motor drive sectionTake off the timing belt, bushings and pulley Ring Bushing Bracket White BlackRed 09/01Disconnect 1 connector from the Radf con Original exit/reverse motor M3Original feed motor drive SectionSolenoid Original pickup solenoid SOL1Original pickup solenoid BracketGate solenoid SOL2 Mark-off lineGate solenoid Sensor/switch Original tray width sensor S2Original tray sensor S1 Release 2 latches and take off the original tray sensorOriginal tray sensor Jam access cover sensor S11 Jam access cover sensorOriginal empty sensor S3 Metal plate coverRemove 2 screws and take off the bracket Original length detection sensor S4Original empty sensor Original length detection sensor Original registration sensor S5 Take off the feeder lower guide Feeder lower guideOriginal width detection sensor-1 S6 Original width detection sensor-2 S7Read sensor S9 Take off the pre-reading upper guide Pre-reading guideOriginal intermediate transport sensor S8 Original exit/reverse sensor S10Original exit/reverse sensor Original jam access cover opening/closing switch SW1 Take off the original jam access coverRadf opening/closing sensor S12 Disconnect 3 terminals. Remove 1 screwPC Board Radf control PC board ADF boardADF board Others Hinge stopperRemove 1 screw and then take off the hinge StopperDisassembly and Assembly Adjustment of Position CheckingAdjustment 05/12 05/12 Install the right-hand hinge screw at the rear Install the bracket on the left-hand hingeSide MR-3021/3022 only05/12 Adjustment of Height ~0.5mm 0mmTurn it counterclockwise Heightened Turn it clockwiseAdjustment of Skew 19 Chart OriginalAdjustment Simplex copying 05/12 Adjustment of the Leading Edge Position 26 Chart OriginalAdjustment 11/12 Adjustment of Horizontal Position 11/12 Adjustment of Copy Ratio 11/12 Adjustment of Radf Opening/Closing Sensor Adjustment Troubleshooting Troubleshooting for Mechanical ErrorsTroubleshooting for Electrical Errors Check or replace the Radf boardFeed signal reception jam JamJam not reaching the original registration sensor Jam not reaching the read sensorRadf jam access cover open jam Stop jam at the original registration sensorStop jam at the read sensor Stop jam at the original exit/reverse sensorRadf open jam Cover open jam in the read ready status11/04 09/05 Periodic Maintenance Symbols used in the checklistRewriting ROM Firmware Updating Assembly of PC Board Component side Soldered sideDiagram Circuit2005 2011 Toshiba TEC Corporation All rights reserved Control PC Board Circuit 1 MR-3018/3020Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram 2 MR-3021 11 09/05 09/05 13 09/05 09/05 15 09/05 3 MR-3022 17 09/05 09/05 19 09/05 09/05 21 09/05 Circuit Diagram / Harness Diagram

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