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Toshiba MR-3018, MR-3022 Troubleshooting for Electrical Errors, Check or replace the Radf board

Models: MR-3018 MR-3022

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6.2Troubleshooting for Electrical Errors

1)RADF does not work (except in the case of a paper jam or when the cover is open) Interface harness connected properly?

↓ NO→ Connect the harness properly or replace it

YES

DC+5V supplied to CN70-2, 3pin?

↓NO→ Connect the harness properly or replace it

YES

DC+24V supplied to CN70-6, 7pin?

↓NO→ Connect the harness properly or replace it

YES

DC+24V supplied to CN72-4pin?

↓NO→ Check or replace the jam access cover switch

YES

Empty sensor is ON when there is paper?

↓NO→ Check or replace the empty sensor

YES

Check or replace the RADF board

2)Communication error Interface cable normal?

↓ NO→ Replace the interface cable

YES

Check or replace the RADF board and check the equipment

3) Size detection error

Original tray sensor is ON when there is paper?

↓NO→ Replace the sensor or harness

YES

Registration roller does not catch the original?

↓YES→ Clean the roller with alcohol or replace

NO

Original width detection sensor-1 is ON when there is paper?

↓NO→ Replace the sensor or harness

YES

Original width detection sensor-2 is ON when there is paper?

↓NO→ Replace the sensor or harness

YES

Check or replace the RADF board

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

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Toshiba MR-3018, MR-3022 service manual Troubleshooting for Electrical Errors, Check or replace the Radf board

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 06/09 Main ComponentsLocation Components 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 Read motor drive section OutlineFeed 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 width sizes mixed at LG / LT-R standard LT series ORG-SRSLT series width sizes mixed at LD / LT 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 onRead motor and exit/reverse motor rotate at requested speed Transport request Signal received?Jam Original exit/reverse motor and read motor stop Sensor OFF? Exposure and scanning start OriginalScanning completed Jam Original exit/reverse Sensor OFF? Original exit/reverse motor and read motor stopOriginal intermediate Transport sensor ON? 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 Front cover 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 Stay Take off the jam access guideFeeder lower guide 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 Gate solenoid SOL2Mark-off line Sensor/switch Original tray width sensor S2Original tray sensor Original tray sensor S1Release 2 latches and take off the original tray sensor Jam access cover sensor S11 Jam access cover sensorOriginal empty sensor S3 Metal plate coverOriginal empty sensor Original length detection sensor Remove 2 screws and take off the bracketOriginal length detection sensor S4 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 screwADF board PC BoardRadf control PC board ADF 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 sensor11/04 Radf open jamCover open jam in the read ready status 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