Ricoh B121 Service Manual page 405

DOCUMENT FEEDER B387
1 OVERALL INFORMATION ...............................................................1
1.1 MECHANICAL COMPONENT LAYOUT ...................................................... 1
1.2 ELECTRICAL COMPONENT LAYOUT........................................................ 2
1.3 DRIVE LAYOUT ........................................................................................... 3
2 DETAILED SECTION DESCRIPTIONS ............................................4
2.1 ORIGINAL SIZE DETECTION...................................................................... 4
2.2 PICK-UP AND SEPARATION ...................................................................... 6
2.3 ORIGINAL TRANSPORT AND EXIT MECHANISM ..................................... 7
2.4 STAMP ......................................................................................................... 8
2.5 TIMING CHARTS ......................................................................................... 9
2.5.1 A3 ........................................................................................................ 9
2.5.2 A3, STAMP MODE ............................................................................ 10
2.6 JAM DETECTION....................................................................................... 11
2.7 OVERALL ELECTRICAL CIRCUIT ............................................................ 12
2.8 FREE RUN ................................................................................................. 13
Procedure .............................................................................................. 13
Free Run Process .................................................................................. 13
3 REPLACEMENT AND ADJUSTMENT ...........................................14
3.1 EXTERIOR COVERS ................................................................................. 14
3.1.1 REAR COVER ................................................................................... 14
3.1.2 ORIGINAL TABLE ............................................................................. 14
3.1.3 FRONT COVER................................................................................. 14
3.1.4 ORIGINAL ENTRANCE GUIDE ........................................................ 14
3.1.5 DF FEED COVER.............................................................................. 15
3.2 FEED UNIT................................................................................................. 15
3.3 SEPARATION ROLLER ............................................................................. 15
3.4 PICK-UP ROLLER...................................................................................... 16
3.5 FEED BELT ................................................................................................ 16
3.6 ORIGINAL SENSORS (WIDTH, LENGTH, TRAILING EDGE)................... 17
3.7 ORIGINAL SET SENSOR .......................................................................... 18
3.8 TRANSPORT MOTOR ............................................................................... 18
3.9 DF COVER OPEN SENSOR/FEED CLUTCH/ROM/
DF DRIVE BOARD ..................................................................................... 19
Exterior .................................................................................................. 19
Feed Cover Open Sensor ...................................................................... 19
Feed Clutch ........................................................................................... 19
ROM ...................................................................................................... 19
DF Drive Board ...................................................................................... 19
3.10 REGISTRATION SENSOR....................................................................... 20
3.11 PICK-UP SOLENOID ............................................................................... 20
3.12 STAMP SOLENOID.................................................................................. 21
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TABLE OF CONTENTS
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