SM  i  D3B1 
PAPER FEED UNIT PB2020 
(D3B1) 
TABLE OF CONTENTS 
 
1.  REPLACEMENT AND ADJUSTMENT ............................................ 1 
1.1  COVERS AND ROLLER ................................................................................................... 1 
1.1.1  PAPER TRAY ......................................................................................................... 1 
1.1.2  REAR COVER ........................................................................................................ 1 
1.1.3  PICK-UP ROLLER.................................................................................................. 2 
1.1.4  PAPER FEED ROLLER ......................................................................................... 3 
1.1.5  FRICTION ROLLER ............................................................................................... 4 
1.1.6  VERTICAL TRANSFER ROLLERS ........................................................................ 5 
Vertical Transfer Roller (Driving Side) ........................................................................ 5 
Vertical Transfer Roller (Driven Side) ......................................................................... 7 
1.2  MOTORS AND CLUTCH .................................................................................................. 8 
1.2.1  TRAY LIFT MOTOR................................................................................................ 8 
1.2.2  TRANSPORT MOTOR ........................................................................................... 9 
1.2.3  PAPER FEED CLUTCH ....................................................................................... 10 
1.3  SENSORS AND BOARD ................................................................................................ 11 
1.3.1  PAPER END SENSOR ......................................................................................... 11 
1.3.2  TRAY LIFT SENSOR ............................................................................................ 11 
1.3.3  PAPER FEED SENSOR ....................................................................................... 12 
1.3.4  TRAY SET SWITCH ............................................................................................. 12 
1.3.5  RIGHT DOOR SWITCH ....................................................................................... 13 
1.3.6  MAIN BOARD ....................................................................................................... 13