Pre-reading roller, Post-reading roller | Toshiba MR-3018, MR-3022

[J]Pre-reading roller

(1)Take off the pre-reading upper guide.

( P. 4-13 "[H] Pre-reading guide")

(2)Take off the read motor drive section.

( P. 4-19 "[C] Read motor drive section")

(3)Remove 1 bushing, 1 screw, 1 pulley and 1 bearing from the rear side of the pre-reading roller shaft.

(4)Remove 1 clip and 1 bushing from the front side of the pre-reading roller shaft.

(5)Take off the pre-reading roller.

Screw
Bushing	Bearing
Bushing	Pulley
	Fig. 4-38

Pre-reading roller
Bushing	Clip
Fig. 4-39

[K]Post-reading roller

(1)Take off the pre-reading lower guide.

( P. 4-13 "[H] Pre-reading guide")

(2)Disconnect 1 connector.

Connector

Fig. 4-40

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

4 - 14

07/06

Image 48

Toshiba MR-3018, MR-3022 service manual Post-reading roller, Screw Bushing, Pre-reading roller Bushing, Connector

Contents

MR-3018/3020/3021/3022 Trademarks 11/12 11/12 Page Contents Circuit Diagram / Harness Diagram Rewriting ROM Firmware Updating Specifications MR-3018/3020 MR-3021/3022 Specifications Main Components Location Components06/09 Sectional View Electric Parts Layout S12S11 S7 S6 S5 S8S4 S10 Symbols and Functions of Various Components Sensors and SwitchesMotors Solenoid Diagram 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 roller Original exit/reverse motor drive section Gate solenoid Reverse flap Exit/reverse motorReverse Exit/reverse roller Original Size Detection Original tray width sensor= high level Open = low level Short Original width size A4 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 standard LT 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? Jam Original Certain period Time passed?Read motor rotates Registration roller rotates. Feed motor rotates reverse Scanning start signal Certain periodDuplex? Sent level High Original 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 on Transport 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 Motor Drive Circuit for Read Motor Drive Circuit for Exit Motor Drive Circuit for FAN Motor Reset Circuit Drive Circuit for Pickup Solenoid Drive Circuit for Gate Solenoid Cover Front coverFront cover Jam access cover Rear coverRear cover Pin Take off the jam access cover by sliding it Remove 1 screw and the hinge pinLeft cover Left cover Original tray Original reverse tray Original reverse tray Roller Paper feeder unitRemove 1 clip and slide 2 bushings Take off the paper feeder unit Pickup roller PM Feed roller PMShaft Clip Pickup roller Slide the pulley and remove 1 pin Pull out the shaft and take off the feed rollerPulley Shaft Separation roller PM Take off the jam access guide Feeder lower guideStay Registration roller Exit/reverse roller Exit guide Exit/reverse roller Pre-reading guide Intermediate transport rollerHinge pin Pre-reading guide Connector Pre-reading rollerPost-reading roller Screw Bushing Flange Bearing Bushing BushingHolder Platen guide Reverse registration roller Upper guidePost-reading roller Ring Open the RADF. Take off the reverse regis- tration roller Roller Motor / Motor drive section Fan motor M4Read motor M2 Read motor Read motor drive section SpringSpring Harness clamp Remove 3 screws and then take off the bracket Take off 1 timing belt and 4 bushingsTiming belt Screw Tensioner Ring Original feed motor M1 Original feed motor drive section Take off the timing belt, bushings and pulley Ring Bushing Bracket White BlackRed 09/01 Disconnect 1 connector from the Radf con Original exit/reverse motor M3Original feed motor drive Section Solenoid Original pickup solenoid SOL1Original pickup solenoid Bracket Gate solenoid SOL2 Mark-off lineGate solenoid Sensor/switch Original tray width sensor S2 Original 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 cover Remove 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 S7 Read sensor S9 Take off the pre-reading upper guide Pre-reading guideOriginal intermediate transport sensor S8 Original exit/reverse sensor S10 Original 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 screw PC Board Radf control PC board ADF boardADF board Others Hinge stopperRemove 1 screw and then take off the hinge Stopper Disassembly and Assembly Adjustment of Position Checking Adjustment 05/12 05/12 Install the right-hand hinge screw at the rear Install the bracket on the left-hand hingeSide MR-3021/3022 only 05/12 Adjustment of Height ~0.5mm 0mm Turn it counterclockwise Heightened Turn it clockwise Adjustment of Skew 19 Chart Original Adjustment Simplex copying 05/12 Adjustment of the Leading Edge Position 26 Chart Original Adjustment 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 Errors Troubleshooting for Electrical Errors Check or replace the Radf board Feed signal reception jam JamJam not reaching the original registration sensor Jam not reaching the read sensor Radf jam access cover open jam Stop jam at the original registration sensorStop jam at the read sensor Stop jam at the original exit/reverse sensor Radf open jam Cover open jam in the read ready status11/04 09/05 Periodic Maintenance Symbols used in the checklist Rewriting ROM Firmware Updating Assembly of PC Board Component side Soldered side Diagram Circuit 2005 2011 Toshiba TEC Corporation All rights reserved Control PC Board Circuit 1 MR-3018/3020 Circuit 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