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Toshiba MR-3022, MR-3018 service manual Reset Circuit, Drive Circuit for Pickup Solenoid

Models: MR-3018 MR-3022

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3.4.5Reset Circuit

Fig. 3-10

This circuit generates a reset signal when the power is turned ON and the power voltage is blocked or cut off/lowered temporarily.

At the power-ON, the circuit shifts the level of the reset signal from “L” to “H” to put the CPU in a opera- tive state after the reset pulse duration (Tpd) determined by the capacitance of C58 has passed from when the power voltage has reached the supervisory voltage (Vs) divided by R116 and R117.

When a power voltage drop (cutoff, temporary cutoff, temporary low voltage) occurs and the power volt- age becomes lower than the set value for the supervisory voltage for the power, the circuit sets the level of the reset signal (RESET) to “L” to put the CPU in a halt state.

3.4.6Drive Circuit for Pickup Solenoid

3

Fig. 3-11

Pick up solenoid is a two-way solenoid that can be operated both in suction and recovery, and driven by two transistors (Q4 and Q2) for each operation respectively.

When the PSOL-ON-Signal level is set to “L”, Q4 is turned ON, the power of 24V is applied to the coil for suction operation, the solenoid is turned ON, and then the pickup roller goes down.

When the PSOL-ON-Signal level is set to “L”, Q2 is turned ON, the power of 24V is applied to the coil for recovery operation, the solenoid is turned OFF, and then the pickup roller goes up.

© 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 Reset Circuit, Drive Circuit for Pickup Solenoid

Contents

MR-3018/3020/3021/3022 11/12 Trademarks11/12 Page Contents Rewriting ROM Firmware Updating Circuit Diagram / Harness DiagramMR-3018/3020 MR-3021/3022 SpecificationsSpecifications Main Components Location Components06/09 Sectional View S12 Electric Parts LayoutS11 S7 S6 S5 S8S4 S10Sensors and Switches Symbols and Functions of Various ComponentsMotors SolenoidDiagram of Signal Blocks Description of Interface Signals Outline Feed motor drive sectionRead motor drive section Original feed motor drive section Intermediate transfer roller Read motor drive sectionGate solenoid Reverse flap Exit/reverse motor Original exit/reverse motor drive sectionReverse Exit/reverse rollerOriginal tray width sensor Original Size Detection= high level Open = low level Short Original width sizeA4 series width sizes mixed at B4 / B5 standard A4 series width sizes mixed at A3 / A4 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 Cover OPEN? All sensors OFF? Power on Standby Radf jam accessEmpty sensor ON? JamCertain period Time passed? OriginalRead motor rotates Registration roller rotates. Feed motor rotates reverseCertain period Scanning start signalDuplex? Sent level HighJam Read sensor OFF? Original exit/reverse Sensor ON?Certain period Time passed? Read motor stops Certain period Time passed?Gate solenoid on Scanning start signal sent level Low Scanning completedTransport 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? Drive Circuit for Feed Motor Description of CircuitDrive Circuit for Read Motor Drive Circuit for FAN Motor Drive Circuit for Exit MotorDrive Circuit for Pickup Solenoid Reset CircuitDrive Circuit for Gate Solenoid Cover Front coverFront cover Rear cover Jam access coverRear cover PinRemove 1 screw and the hinge pin Take off the jam access cover by sliding itLeft cover Left coverOriginal tray Original reverse tray Original reverse trayPaper feeder unit RollerRemove 1 clip and slide 2 bushings Take off the paper feeder unitFeed roller PM Pickup roller PMShaft Clip Pickup rollerPull out the shaft and take off the feed roller Slide the pulley and remove 1 pinPulley ShaftSeparation roller PM Take off the jam access guide Feeder lower guideStay Exit/reverse roller Registration rollerExit/reverse roller Exit guideIntermediate transport roller Pre-reading guideHinge pin Pre-reading guidePre-reading roller ConnectorPost-reading roller Screw BushingBushing Flange Bearing BushingHolder Platen guideUpper guide Reverse registration rollerPost-reading roller RingRoller Open the RADF. Take off the reverse regis- tration rollerFan motor M4 Motor / Motor drive sectionRead motor M2 Read motorSpring Read motor drive sectionSpring Harness clampTake off 1 timing belt and 4 bushings Remove 3 screws and then take off the bracketTiming belt Screw Tensioner RingOriginal feed motor drive section Original feed motor M1Ring Bushing Bracket White Black Take off the timing belt, bushings and pulleyRed 09/01Original exit/reverse motor M3 Disconnect 1 connector from the Radf conOriginal feed motor drive SectionOriginal pickup solenoid SOL1 SolenoidOriginal pickup solenoid BracketGate solenoid SOL2 Mark-off lineGate solenoid Original tray width sensor S2 Sensor/switchOriginal tray sensor S1 Release 2 latches and take off the original tray sensorOriginal tray sensor Jam access cover sensor Jam access cover sensor S11Original empty sensor S3 Metal plate coverRemove 2 screws and take off the bracket Original length detection sensor S4Original empty sensor Original length detection sensor Take off the feeder lower guide Feeder lower guide Original registration sensor S5Original width detection sensor-1 S6 Original width detection sensor-2 S7Take off the pre-reading upper guide Pre-reading guide Read sensor S9Original intermediate transport sensor S8 Original exit/reverse sensor S10Original exit/reverse sensor Take off the original jam access cover Original jam access cover opening/closing switch SW1Radf opening/closing sensor S12 Disconnect 3 terminals. Remove 1 screwPC Board Radf control PC board ADF boardADF board Hinge stopper OthersRemove 1 screw and then take off the hinge StopperDisassembly and Assembly Checking Adjustment of PositionAdjustment 05/12 05/12 Install the bracket on the left-hand hinge Install the right-hand hinge screw at the rearSide MR-3021/3022 only05/12 ~0.5mm 0mm Adjustment of HeightTurn it clockwise Turn it counterclockwise Heightened19 Chart Original Adjustment of SkewAdjustment Simplex copying 05/12 26 Chart Original Adjustment of the Leading Edge PositionAdjustment 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 TroubleshootingCheck or replace the Radf board Troubleshooting for Electrical ErrorsJam Feed signal reception jamJam not reaching the original registration sensor Jam not reaching the read sensorStop jam at the original registration sensor Radf jam access cover open jamStop 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 Symbols used in the checklist Periodic MaintenanceRewriting ROM Firmware Updating Component side Soldered side Assembly of PC BoardCircuit Diagram2005 2011 Toshiba TEC Corporation All rights reserved 1 MR-3018/3020 Control PC Board CircuitCircuit 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