Canon DADF-M1 Service Manual

Also see for DADF-M1: Service manual General Timing Chart/General Circuit Diagram Portable manual Service manual Service bulletin

Contents

Canon DADF-M1 Service Manual Manual pdf 40 page image

Chapter 22-18b. Mix of Different Configurations/Extra-LengthIf the originals are of different configurations or are of extra length, the following 3 detection mechanisms are used:T-2-42.3.2 Checking the Presence/Absence of an Original 0002-7429The machine uses the original placement sensor (PI5) to check the presence/absence of an original in the original tray.When an original is placed on the tray, the detecting lever operates in conjunction with the light-blocking plate, during which the light-blocking plate blocks thelight of the photo interrupter. As a result, the original placement sensor (PI5) generates the original detection signal (EMP_S), which will cause the ADF driverPCB to turn on the original placement indicator.F-2-172.3.3 Identifying the Size of the Original 0002-7466A. Normal PrintingThe machine identifies the size of an original with reference to combinations of the size (width, length) detected on the original tray and the size (length) detectedwhile the original is being moved.a. Detecting the Size of the Original in Feed DirectionThe machine detects the size of an original in feed direction with reference to the state of the post-separation sensor (PI7) after the read sensor (PI8) has gone offand the state of the LGL sensor (PI4)on the tray (LGL/STMT).The machine measures the length of the time from when the read sensor goes on to when it goes off to find out the length of the original; it then uses the result ofthe measurement and the result of detection made on the original tray to identify the size of the original.Cross-feeddirectionchecks the width of the original placed in the original pickup tray. original width volume(VR1)identification between A4R/A5R and LTRR/STMTR AB/inch sensorItem Description Sensor used(notation)checks thepresence/absence ofan original in theoriginal pickup tray.checks the presence/absence of an original in the original pickup tray. original placementsensor (PI5)Original presence/absenceCross-feeddirectionchecks the width of the original placed in the original pickup tray. original width volume(VR1)Feed direction checks the length of the original with reference to the time (distance)from when the read sensor goes on to when it goes off.read sensor (PI8)Item Description Sensor used(notation)ADF driver PCBDetecting lever OriginalEMP_SEMP_LEDLEDPI5