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

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Toshiba MR-3018 service manual Troubleshooting for Electrical Errors