Ricoh D158 Service Manual page 744

1. ARDF DF2020 (D684) .................................................................... 1
1.1 COVERS AND TRAY ..................................................................................... 1
1.1.1 REAR COVER ...................................................................................... 1
1.1.2 FRONT COVER AND ORIGINAL TRAY ............................................... 2
1.2 DOCUMENT FEED COMPONENTS ............................................................. 3
1.2.1 ORIGINAL FEED UNIT ......................................................................... 3
1.2.2 PICK-UP ROLLER ................................................................................ 3
1.2.3 FEED BELT .......................................................................................... 4
1.2.4 SEPARATION ROLLER ....................................................................... 5
1.3 ELECTRICAL COMPONENTS ...................................................................... 6
1.3.1 ARDF DRIVE BOARD AND DF POSITION SENSOR .......................... 6
1.3.2 ORIGINAL LENGTH SENSORS AND ORIGINAL SENSOR ................ 7
1.3.3 ORIGINAL SET SENSOR ..................................................................... 8
1.3.4 ORIGINAL SIZE SENSORS AND SKEW CORRECTION SENSOR .. 10
1.3.5 STAMP SOLENOID ............................................................................ 12
1.3.6 ORIGINAL EXIT SENSOR .................................................................. 14
1.3.7 REGISTRATION SENSOR ................................................................. 15
1.3.8 ARDF COVER SWITCH ..................................................................... 15
1.4 ORIGINAL FEED DRIVE ............................................................................. 16
1.4.1 FEED MOTOR .................................................................................... 16
1.4.2 PICK-UP SOLENOID .......................................................................... 18
1.4.3 INVERTER SOLENOID ...................................................................... 18
1.4.4 FEED CLUTCH ................................................................................... 19
1.4.5 TRANSPORT MOTOR ....................................................................... 20
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ARDF DF2020 (D684)
TABLE OF CONTENTS
i D684