Ricoh U-C1 B051 - Page 16

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2.3.1 TRAY SHIFT.............................................................................. B510-5
2.3.2 HALF TURN DETECTION.........................................................B510-6
BY-PASS TRAY UNIT (B490)
1. REPLACEMENT AND ADJUSTMENT..................................B490-1
1.1 PICKUP/FEED ROLLER..................................................................... B490-1
1.2 PAPER FEED CLUTCH......................................................................B490-2
1.3 REVERSE ROLLER ...........................................................................B490-2
1.4 PAPER SIZE SENSOR BOARD.........................................................B490-3
2. DETAILED DESCRIPTIONS .................................................B490-4
2.1 MECHANICAL COMPONENT LAYOUT............................................. B490-4
2.2 PAPER FEED.....................................................................................B490-5
2.2.1 DRIVE........................................................................................B490-5
Power Source................................................................................. B490-5
Rollers............................................................................................ B490-5
2.2.2 PAPER FEED MECHANISM .....................................................B490-6
Pickup Roller Mechanism...............................................................B490-6
Paper End Detection......................................................................B490-6
2.3 PAPER SIZE DETECTION................................................................. B490-7
DUPLEX UNIT (B509)
1. REPLACEMENT AND ADJUSTMENT..................................B509-1
1.1 EXTERIOR COVER............................................................................ B509-1
1.2 ENTRANCE/EXIT SENSORS.............................................................B509-1
1.3 INVERTER MOTOR ...........................................................................B509-2
1.4 CONTROLLER BOARD......................................................................B509-2
1.5 TRANSPORT MOTOR .......................................................................B509-2
2. DETAILED DESCRIPTIONS .................................................B509-3
2.1 OVERVIEW ........................................................................................B509-3
2.2 ELECTRICAL COMPONENT LAYOUT.............................................. B509-4
2.3 DRIVE LAYOUT .................................................................................B509-5
2.4 DUPLEX PAPER FEED ORDER........................................................ B509-6
2.4.1 LONGER THAN A4/LT LEF....................................................... B509-6
2.4.2 UP TO A4/LT LEF......................................................................B509-7
2.5 REVERSE MECHANISM....................................................................B509-8
BRIDGE UNIT (B482)
1. REPLACEMENT AND ADJUSTMENT..................................B482-1
1.1 BRIDGE UNIT DRIVE MOTOR REPLACEMENT...............................B482-1
1.2 TRAY EXIT SENSOR REPLACEMENT .............................................B482-2
1.3 RELAY SENSOR REPLACEMENT....................................................B482-2