Ricoh A250 Service Manual page 18

Rev. 05/2000
1.5 TIMING CHARTS ....................................................................................8-11
1.5.1 A4 SIDEWAYS ...............................................................................8-11
1.5.2 A4 SIDEWAYS, STAMP MODE .....................................................8-12
1.6 JAM DETECTION....................................................................................8-13
1.7 OVERALL ELECTRICAL CIRCUIT .........................................................8-14
3. REPLACEMENT AND ADJUSTMENT...................................... 8-15
3.1 FEED UNIT REMOVAL ...........................................................................8-15
3.2 SEPARATION ROLLER REPLACEMENT ..............................................8-15
3.3 PICK-UP ROLLER REPLACEMENT .......................................................8-16
3.4 FEED BELT REPLACEMENT .................................................................8-16
3.5 ORIGINAL SET SENSOR REPLACEMENT............................................8-17
3.6
ORIGINAL WIDTH/LENGTH/TRAILING EDGE SENSOR REPLACEMENT
3.7 ORIGINAL EXIT TRAY/FRONT COVER/REAR COVER
REMOVAL ...............................................................................................8-19
3.8 FEED COVER OPEN SENSOR/DF OPEN SENSOR
REPLACEMENT......................................................................................8-19
3.9 FEED CLUTCH/PICK-UP SOL/TRANSPORT MOTOR
REPLACEMENT......................................................................................8-20
3.10 DF FEED COVER REMOVAL ...............................................................8-21
3.11 REGISTRATION SENSOR REPLACEMENT........................................8-21
3.12 STAMP SOLENOID REPLACEMENT ...................................................8-22
PAPER TRAY UNIT (A860)
1. OVERALL MACHINE INFORMATION ........................................ 9-1
1.1 SPECIFICATIONS.....................................................................................9-1
1.2 MECHANICAL COMPONENT LAYOUT....................................................9-2
1.3 ELECTRICAL COMPONENT LAYOUT .....................................................9-3
1.4 ELECTRICAL COMPONENT DESCRIPTION...........................................9-4
1.5 DRIVE LAYOUT ........................................................................................9-5
2. DETAILED DESCRIPTIONS ....................................................... 9-6
2.1 PAPER FEED AND SEPARATION MECHANISM ....................................9-6
2.2 PAPER LIFT MECHANISM .......................................................................9-7
2.3 PAPER END DETECTION ........................................................................9-9
2.4 PAPER HEIGHT DETECTION ................................................................9-10
1.5 PAPER SIZE DETECTION......................................................................9-12
1.6 SIDE AND END FENCES........................................................................9-13
3. REPLACEMENT AND ADJUSTMENT...................................... 9-14
3.1 FEED ROLLER REPLACEMENT............................................................9-14
3.2 TRAY MAIN BOARD REPLACEMENT ...................................................9-15
3.3 TRAY MOTOR REPLACEMENT.............................................................9-15
3.4 RELAY CLUTCH REPLACEMENT .........................................................9-16
3.5 UPPER PAPER FEED CLUTCH REPLACEMENT .................................9-17
3.6 LOWER PAPER FEED CLUTCH REPLACEMENT ................................9-18
3.7 LIFT MOTOR REPLACEMENT ...............................................................9-19
A250 vi
...8-18
SM