Table Of Contents - Ricoh C231 Service Manual

OVERALL INFORMATION
OVERALL INFORMATION ............................................................... 1-1
1.1 SPECIFICATION .......................................................................................1-1
1.2 GUIDE TO COMPONENTS AND THEIR FUNCTION...............................1-5
1.2.1 MACHINE EXTERIOR......................................................................1-5
1.2.2 MACHINE INTERIOR .......................................................................1-6
1.2.3 OPERATION PANEL........................................................................1-7
Keys......................................................................................................1-7
Indicators ..............................................................................................1-9
1.3 PRINTING PROCESS .............................................................................1-10
1.4 MECHANICAL COMPONENT LAYOUT .................................................1-11
1.5 ELECTRICAL COMPONENT LAYOUT...................................................1-12
1.5.1 ADF ................................................................................................1-12
1.5.2 MAIN BODY ...................................................................................1-13
Boards ................................................................................................1-14
Motors.................................................................................................1-14
Solenoids ............................................................................................1-15
Switches .............................................................................................1-15
Sensors...............................................................................................1-15
Counters .............................................................................................1-16
Others .................................................................................................1-16
1.6 DRIVE LAYOUT ......................................................................................1-17
DETAILED DESCRIPTIONS
DETAILED SECTION DESCRIPTIONS ............................................ 2-1
2.1 SCANNER AND OPTICS ..........................................................................2-1
2.1.1 BOOK SCANNER OVERVIEW ........................................................2-1
2.1.2 ADF OVERVIEW ..............................................................................2-2
2.1.3 CONTACT IMAGE SENSOR............................................................2-4
2.1.4 DRIVE MECHANISM........................................................................2-5
Book Scanner .......................................................................................2-5
ADF.......................................................................................................2-6
2.1.5 PICK-UP AND FEED (ADF) .............................................................2-7
2.1.6 SEPARATION MECHANISM (ADF) .................................................2-8
2.1.7 ERROR CONDITIONS .....................................................................2-9
Book Scanner .......................................................................................2-9
ADF.......................................................................................................2-9
2.2 IMAGE-PROCESSING ............................................................................2-10
2.2.1 OVERVIEW ....................................................................................2-10
2.2.2 A/D CONVERSION PROCESSING................................................2-11
Shading Distortion Correction .............................................................2-11
SM
C231

TABLE OF CONTENTS

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Rev. 08/2001
C231/C237/C238/C248/C267