Toshiba MR-3018 service manual Troubleshooting for Electrical Errors

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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?

NOConnect the harness properly or replace it

YES

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

NOConnect the harness properly or replace it

YES

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

NOConnect the harness properly or replace it

YES

DC+24V supplied to CN72-4pin?

NOCheck or replace the jam access cover switch

YES

Empty sensor is ON when there is paper?

NOCheck or replace the empty sensor

YES

Check or replace the RADF board

2) Abnormality of motor

Power supplied and drives signals to connector of motor?

NOCheck or replace motor

YES

There is no mechanical overloading at the motor and the drive system is correct? (Belt tension etc.)

NOCheck or replace motor harness

YES

Check or replace the RADF board

3)Communication error Interface cable normal?

NOReplace the interface cable

YES

Check or replace the RADF board and check the equipment

4) Size detection error

Original tray sensor is ON when there is paper?

NOReplace the sensor or harness

YES

Registration roller does not catch the original?

YESClean the roller with alcohol or replace

NO

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

NOReplace the sensor or harness

YES

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

NOReplace the sensor or harness

YES

Check or replace the RADF board

MR-3018 Troubleshooting

June 2005 © TOSHIBA TEC

6 - 2

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Contents MR-3018 Toshiba TEC Corporation Page Page Contents Circuit Diagram / Harness Diagram Specification MR-3018 Specification June 2005 Toshiba TEC General Description Main ComponentsSectional View FLP2Electric Parts Layout Symbols and Functions of Various Components MotorsDiagram of Signal Blocks REQ ACK DF-REQ DF-ACK SCAN-ST CNT CPUDescription of Interface Signals Description of Operations OutlineOriginal feed motor drive section Read motor drive section Original exit/reverse motor drive section Original Size Detection Original tray width sensorA4 series width sizes mixed at A3 / A4 standard LT series ORG-SRS Flow Chart ON? YES Certain period YES Gate solenoid on Transport request Signal received? Exposure and scanning start Original END 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 Disassembly and Assembly CoverRear cover Pin Dial Clip Left cover Remove 2 screws and take off the left cover Original tray Take off the front cover Original reverse tray Take off the original tray Roller Pickup roller PM Take off the paper feeder unit Slide the pulley and remove 1 pin Separation roller PM Take off the paper feeder unit Feeder lower guide Take off the original tray Registration roller Take off the feeder lower guide Exit guide Pre-reading lower guide Connector Flange Upper guide Reverse registration Motor / Motor drive section Spring Remove 3 screws and then take off the bracket Spring Bushing Harness clamp Ring Bracket Screw Original exit/reverse motor M3 Solenoid Mark-off line Sensor/switch Remove 2 screws and take off the holder Jam access cover sensor Original empty sensor Actuator Connector Holder Original exit/reverse sensor Opening/closing PC Board Others Hinge stopperMR-3018 Disassembly and Assembly Adjustment Adjustment of PositionMR-3018 Adjustment June 2005 Toshiba TEC Loosen the hinge screws at the front side Match the screw hole positions June 2005 Toshiba TEC MR-3018 Adjustment Adjustment of Height ~0.5mm 0mmTurn it counterclockwise Heightened Adjustment of Skew 17 Chart OriginalShift the aligning plate in the direction of + MR-3018 Adjustment June 2005 Toshiba TEC Adjustment of the Leading Edge Position 24 Chart OriginalMR-3018 Adjustment June 2005 Toshiba TEC Adjustment of Horizontal Position Adjustment of Copy Ratio Adjustment of Radf Opening/Closing Sensor MR-3018 Adjustment June 2005 Toshiba TEC Troubleshooting Troubleshooting for Mechanical ErrorsTroubleshooting for Electrical Errors YES MR-3018 Troubleshooting June 2005 Toshiba TEC Maintenance and Rewriting ROM Periodic MaintenanceRewriting ROM Firmware Updating Circuit Diagram / Harness Diagram Assembly of PC BoardDiagram CircuitOriginal tray sensor Original tray width sensor Control PC Board Circuit MR-3018 Circuit Diagram / Harness Diagram MR-3018 Circuit Diagram / Harness Diagram June 2005 Toshiba TEC MR-3018 Circuit Diagram / Harness Diagram June 2005 Toshiba TEC MR-3018 Circuit Diagram / Harness Diagram
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