Description of Interface Signals | Toshiba MR-3018, MR-3022 guide

2.6Description of Interface Signals

The following 6 lines are used to transmit/receive signals between the equipment and the RADF.

REQ	Communication request signal (from equipment to the RADF)
DF-REQ	Communication request signal (from the RADF to equipment)
DF-ACK	Communication request acknowledging signal (from the RADF to equipment)
ACK	Communication request acknowledging signal (from equipment to the RADF)
TxD	Data transmitted from equipment to the RADF
RxD	Data transmitted from the RADF to equipment

Data communication (RxD and TxD) between the scanner and the RADF has adopted the serial com- munication system which does not allow checking using testing devices to see whether the signals are transmitted/received properly in the field.

RADF

Equipment

REQ

DF-ACK

TxD

DF-REQ

ACK

RxD

Fig. 2-5

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

2 - 6

05/12

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Toshiba MR-3018, MR-3022 service manual Description of Interface Signals

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 06/09 Main ComponentsLocation Components Sectional View S11 S7 S6 S5 Electric Parts LayoutS12 S8S4 S10 Motors Symbols and Functions of Various ComponentsSensors and Switches Solenoid Diagram 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 roller Reverse Original exit/reverse motor drive sectionGate solenoid Reverse flap Exit/reverse motor Exit/reverse roller = high level Open = low level Short Original Size DetectionOriginal tray width sensor Original width size A4 series width sizes mixed at A4-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 B5-R standard LT series width sizes mixed at LG / LT-R standard LT series ORG-SRSLT series width sizes mixed at LD / LT standard Empty sensor ON? Power on Standby Radf jam accessCover OPEN? All sensors OFF? Jam Read motor rotates OriginalCertain period Time passed? Registration roller rotates. Feed motor rotates reverse Duplex? Scanning start signalCertain period Sent level High Certain period Time passed? Original exit/reverse Sensor ON?Jam Read sensor OFF? Read motor stops Certain period Time passed? Scanning start signal sent level Low Scanning completed Gate solenoid on Read 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 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 Front cover CoverFront cover Rear cover Jam access coverRear cover Pin 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 Remove 1 clip and slide 2 bushings RollerPaper feeder unit Take off the paper feeder unit Shaft Pickup roller PMFeed roller PM Clip Pickup roller Pulley Slide the pulley and remove 1 pinPull out the shaft and take off the feed roller Shaft Separation roller PM Stay Take off the jam access guideFeeder lower guide Registration roller Exit/reverse roller Exit guide Exit/reverse roller Hinge pin Pre-reading guideIntermediate transport roller Pre-reading guide Post-reading roller ConnectorPre-reading roller Screw Bushing Holder Flange Bearing BushingBushing Platen guide Post-reading roller Reverse registration rollerUpper guide Ring Open the RADF. Take off the reverse regis- tration roller Roller Read motor M2 Motor / Motor drive sectionFan motor M4 Read motor Spring Read motor drive sectionSpring Harness clamp Timing belt Remove 3 screws and then take off the bracketTake off 1 timing belt and 4 bushings Screw Tensioner Ring Original feed motor M1 Original feed motor drive section Red Take off the timing belt, bushings and pulleyRing Bushing Bracket White Black 09/01 Original feed motor drive Disconnect 1 connector from the Radf conOriginal exit/reverse motor M3 Section Original pickup solenoid SolenoidOriginal pickup solenoid SOL1 Bracket Gate solenoid Gate solenoid SOL2Mark-off line Sensor/switch Original tray width sensor S2 Original tray sensor Original tray sensor S1Release 2 latches and take off the original tray sensor Original empty sensor S3 Jam access cover sensor S11Jam access cover sensor Metal plate cover Original empty sensor Original length detection sensor Remove 2 screws and take off the bracketOriginal length detection sensor S4 Original width detection sensor-1 S6 Original registration sensor S5Take off the feeder lower guide Feeder lower guide Original width detection sensor-2 S7 Original intermediate transport sensor S8 Read sensor S9Take off the pre-reading upper guide Pre-reading guide Original exit/reverse sensor S10 Original exit/reverse sensor Radf opening/closing sensor S12 Original jam access cover opening/closing switch SW1Take off the original jam access cover Disconnect 3 terminals. Remove 1 screw ADF board PC BoardRadf control PC board ADF board Remove 1 screw and then take off the hinge OthersHinge stopper Stopper Disassembly and Assembly Adjustment of Position Checking Adjustment 05/12 05/12 Side Install the right-hand hinge screw at the rearInstall the bracket on the left-hand hinge 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 Jam not reaching the original registration sensor Feed signal reception jamJam Jam not reaching the read sensor Stop jam at the read sensor Radf jam access cover open jamStop jam at the original registration sensor Stop jam at the original exit/reverse sensor 11/04 Radf open jamCover open jam in the read ready status 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