Ricoh A-C2 - Page 12

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PERIPHERALS
ARDF (B351)
1 REPLACEMENT AND ADJUSTMENT...................................B351-1
1.1 COVERS ............................................................................................ B351-1
1.2 ORIGINAL FEED UNIT ...................................................................... B351-2
1.3 ORIGINAL PICK-UP ROLLER............................................................ B351-2
1.4 ORIGINAL FEED BELT...................................................................... B351-3
1.5 SKEW CORRECTION/INTERVAL/ REGISTRATION/ORIGINAL WIDTH
SENSORS.......................................................................................... B351-4
1.6 ORIGINAL LENGTH SENSORS ........................................................ B351-5
1.7 SEPARATION ROLLER..................................................................... B351-5
1.8 INVERTER /ORIGINAL SET SENSORS............................................ B351-6
1.9 PICK-UP MOTOR/ORIGINAL STOPPER HP SENSOR/PICK-UP HP
SENSOR............................................................................................ B351-6
1.10 SCANNER MOTOR AND INVERTER MOTOR................................ B351-7
1.11 FEED MOTOR, SKEW CORRECTION ROLLER CLUTCH ............ B351-8
1.12 EXIT SENSOR ................................................................................. B351-9
1.13 STAMP SOLENOID.......................................................................... B351-9
1.14 CONTROLLER BOARD ................................................................... B351-9
2 TROUBLESHOOTING .........................................................B351-10
2.1 TIMING CHARTS ............................................................................. B351-10
2.1.1 A4(S)/LT(S) SINGLE-SIDE ORIGINAL MODE........................ B351-10
2.1.2 A4(S)/LT(S) DOUBLE-SIDED ORIGINAL MODE.................... B351-11
2.2 JAM DETECTION............................................................................. B351-12
3 SERVICE TABLES...............................................................B351-13
3.1 DIP SWITCHES................................................................................ B351-13
3.2 TEST POINTS.................................................................................. B351-13
3.3 FUSES ............................................................................................. B351-13
4 DETAILED DESCRIPTION ..................................................B351-14
4.1 MAIN COMPONENTS...................................................................... B351-14
DRIVE LAYOUT .......................................................................... B351-15
4.3 ORIGINAL SIZE DETECTION.......................................................... B351-16
4.3.1 BASIC MECHANISM............................................................... B351-16
4.3.2 MIXED ORIGINAL SIZE MODE .............................................. B351-18
4.4 ORIGINAL FEED-IN MECHANISM .................................................. B351-19
4.4.1 PICK AND SEPARATION........................................................ B351-19
4.4.2 ORIGINAL SKEW CORRECTION........................................... B351-20
4.4.3 REDUCING THE INTERVAL BETWEEN PAGES................... B351-20
4.5 ORIGINAL TRANSPORT AND EXIT................................................ B351-21
4.5.1 SINGLE-SIDED ORIGINALS................................................... B351-21
4.5.2 DOUBLE-SIDED ORIGINALS ................................................. B351-22
4.6 STAMP............................................................................................. B351-23