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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
