Canon FY8-13FW-000DADF-A1 Service Manual

Contents

CHAPTER 5 TROUBLESHOOTING5-32 COPYRIGHT © 1998 CANON INC. CANON DADF-A1 REV.0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)V. SELF DIAGNOSISA. DADF Self DiagnosisThe microprocessor on the machine's DADF controller PCB is provided with a function whichchecks the state of the machine and, upon detection of an error, will indicate an error code on thecopier's control panel.Table 5-501Caution:1. When the self diagnostic mechanism has turned on, the copier may be reset by turning itoff and then on.2. When the DADF is out of order, copies may still be made by placing originals on thecopyboard glass.Code Cause• The communication of datawith the copier is faulty.• The communication is monitored at alltimes, and this error is identified if thecommunication is interrupted for 5 sec ormore.• The pick-up motor (M1) doesnot rotate.• The pick-up roller sensor (S5)is faulty.• A flag is mounted on the spindle of thepick-up motor (M1), and the rotation of thepick-up motor is mounted in reference to theflag blocking the pick-up roller sensor (S5).This error is identified when the sensordoes not turn on and off twice or morewithin 1 sec• The belt motor (M3) doe notrotate.• The belt motor sensor (S10)is faulty.• The number of belt motor clock pulseswithin 200 msec is lower than specific value.• The feeder motor (M2) doesnot rotate.• The feeder motor clocksensor (S9) is faulty.• The number of feeder motor clock pulseswithin 200 msec is lower than a specificvalue.• The delivery motor (M5) doesnot rotate.• The delivery motor clocksensor (S13) is faulty.• The number of feeder motor clock pulseswithin 200 msec is lower than a specificvalue.• The original tray paper sensor(S1) is fauity.• The registration sensor (S3)is faulty.• The output of the sensor is 2.3 V or higherin the absence of paper.Description