Drive Circuit for Read Motor | Toshiba MR-3022, MR-3018 instruction

3.4.2Drive Circuit for Read Motor

3

Fig. 3-7

This circuit controls the rotation/stoppage and the direction of rotation, excitation mode and motor cur- rent of the read motor.

A drive clock signal (RMOT-CLK) and rotation direction signal (RMOT-CW/CCW) are input to control the speed and direction of the motor rotation.

When the level of the enabling signal (RMOT-Enable) is set to "L", motor current is turned to OFF regardless of the state of other signals.

For the excitation mode, either of 2 phase excitation, 1-2 phase excitation, W1-2 phase excitation, 2W1-2 phase excitation or the 4W1-2 phase excitation can be selected using the excitation switching signal (RMOT-Mode1/RMOT-Mode2).

The edge switching signal (RMOT-Mode3) is used to specify the switching timing for excitation phase either from when both the rise and decay edge of the CLK input are detected or when only the rising edge is detected.

Motor current value can be set discretionary by changing the level of the reference setting signal (RMOT-REF).

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

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Toshiba MR-3022, MR-3018 service manual Drive Circuit for Read Motor

Contents

MR-3018/3020/3021/3022 11/12 Trademarks 11/12 Page Contents Rewriting ROM Firmware Updating Circuit Diagram / Harness Diagram MR-3018/3020 MR-3021/3022 Specifications Specifications Location Components Main Components06/09 Sectional View S8S4 S10 Electric Parts LayoutS12 S11 S7 S6 S5 Solenoid Symbols and Functions of Various ComponentsSensors and Switches Motors Diagram of Signal Blocks Description of Interface Signals Feed motor drive section OutlineRead motor drive section Original feed motor drive section Intermediate transfer roller Read motor drive section Exit/reverse roller Original exit/reverse motor drive sectionGate solenoid Reverse flap Exit/reverse motor Reverse Original width size Original Size DetectionOriginal tray width sensor = high level Open = low level Short A4 series width sizes mixed at B5-R standard A4 series width sizes mixed at A3 / A4 standardA4 series width sizes mixed at B4 / B5 standard A4 series width sizes mixed at A4-R standard LT series width sizes mixed at LD / LT standard LT series ORG-SRSLT series width sizes mixed at LG / LT-R standard Jam Power on Standby Radf jam accessCover OPEN? All sensors OFF? Empty sensor ON? Registration roller rotates. Feed motor rotates reverse OriginalCertain period Time passed? Read motor rotates Sent level High Scanning start signalCertain period Duplex? Read motor stops Certain period Time passed? Original exit/reverse Sensor ON?Jam Read sensor OFF? Certain period Time passed? Gate solenoid on Scanning start signal sent level Low Scanning completed Jam Original exit/reverse motor and read motor stop Transport request Signal received?Read motor and exit/reverse motor rotate at requested speed Scanning completed Exposure and scanning start OriginalSensor OFF? Original intermediate Transport sensor ON? Original exit/reverse motor and read motor stopJam Original exit/reverse Sensor OFF? Drive Circuit for Feed Motor Description of Circuit Drive Circuit for Read Motor Drive Circuit for FAN Motor Drive Circuit for Exit Motor Drive Circuit for Pickup Solenoid Reset Circuit Drive Circuit for Gate Solenoid Front cover CoverFront cover Pin Jam access coverRear cover Rear cover Left cover Take off the jam access cover by sliding itRemove 1 screw and the hinge pin Left cover Original tray Original reverse tray Original reverse tray Take off the paper feeder unit RollerPaper feeder unit Remove 1 clip and slide 2 bushings Clip Pickup roller Pickup roller PMFeed roller PM Shaft Shaft Slide the pulley and remove 1 pinPull out the shaft and take off the feed roller Pulley Separation roller PM Feeder lower guide Take off the jam access guideStay Exit/reverse roller Registration roller Exit/reverse roller Exit guide Pre-reading guide Pre-reading guideIntermediate transport roller Hinge pin Screw Bushing ConnectorPre-reading roller Post-reading roller Platen guide Flange Bearing BushingBushing Holder Ring Reverse registration rollerUpper guide Post-reading roller Roller Open the RADF. Take off the reverse regis- tration roller Read motor Motor / Motor drive sectionFan motor M4 Read motor M2 Harness clamp Read motor drive sectionSpring Spring Screw Tensioner Ring Remove 3 screws and then take off the bracketTake off 1 timing belt and 4 bushings Timing belt Original feed motor drive section Original feed motor M1 09/01 Take off the timing belt, bushings and pulleyRing Bushing Bracket White Black Red Section Disconnect 1 connector from the Radf conOriginal exit/reverse motor M3 Original feed motor drive Bracket SolenoidOriginal pickup solenoid SOL1 Original pickup solenoid Mark-off line Gate solenoid SOL2Gate solenoid Original tray width sensor S2 Sensor/switch Release 2 latches and take off the original tray sensor Original tray sensor S1Original tray sensor Metal plate cover Jam access cover sensor S11Jam access cover sensor Original empty sensor S3 Original length detection sensor S4 Remove 2 screws and take off the bracketOriginal empty sensor Original length detection sensor Original width detection sensor-2 S7 Original registration sensor S5Take off the feeder lower guide Feeder lower guide Original width detection sensor-1 S6 Original exit/reverse sensor S10 Read sensor S9Take off the pre-reading upper guide Pre-reading guide Original intermediate transport sensor S8 Original exit/reverse sensor Disconnect 3 terminals. Remove 1 screw Original jam access cover opening/closing switch SW1Take off the original jam access cover Radf opening/closing sensor S12 Radf control PC board ADF board PC BoardADF board Stopper OthersHinge stopper Remove 1 screw and then take off the hinge Disassembly and Assembly Checking Adjustment of Position Adjustment 05/12 05/12 MR-3021/3022 only Install the right-hand hinge screw at the rearInstall the bracket on the left-hand hinge Side 05/12 ~0.5mm 0mm Adjustment of Height Turn it clockwise Turn it counterclockwise Heightened 19 Chart Original Adjustment of Skew Adjustment Simplex copying 05/12 26 Chart Original Adjustment of the Leading Edge Position Adjustment 11/12 Adjustment of Horizontal Position 11/12 Adjustment of Copy Ratio 11/12 Adjustment of Radf Opening/Closing Sensor Adjustment Troubleshooting for Mechanical Errors Troubleshooting Check or replace the Radf board Troubleshooting for Electrical Errors Jam not reaching the read sensor Feed signal reception jamJam Jam not reaching the original registration sensor Stop jam at the original exit/reverse sensor Radf jam access cover open jamStop jam at the original registration sensor Stop jam at the read sensor Cover open jam in the read ready status Radf open jam11/04 09/05 Symbols used in the checklist Periodic Maintenance Rewriting ROM Firmware Updating Component side Soldered side Assembly of PC Board Circuit Diagram 2005 2011 Toshiba TEC Corporation All rights reserved 1 MR-3018/3020 Control PC Board Circuit 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