Ricoh A230 Service Manual page 19

1.4 ELECTRICAL COMPONENT DESCRIPTION .......................................... 9-4
1.5 DRIVE LAYOUT ....................................................................................... 9-5
2. DETAILED DESCRIPTIONS ....................................................... 9-6
2.1 PAPER FEED MECHANISM .................................................................... 9-6
2.2 TRAY LIFT AND PAPER HEIGHT DETECTION MECHANISM ............... 9-7
Tray lifting conditions ........................................................................... 9-7
Tray lowering conditions ...................................................................... 9-7
2.3 TRAY UNIT SLIDE MECHANISM............................................................. 9-8
3. SERVICE TABLES ...................................................................... 9-9
3.1 DIP SWITCHES........................................................................................ 9-9
3.2 TEST POINTS .......................................................................................... 9-9
3.3 SWITCHES............................................................................................... 9-9
3.4 FUSES...................................................................................................... 9-9
4. REPLACEMENT AND ADJUSTMENT...................................... 9-10
4.1 COVER REPLACEMENT ....................................................................... 9-10
Tray Cover ......................................................................................... 9-10
Front Cover ........................................................................................ 9-10
Rear Cover......................................................................................... 9-10
Right Lower Cover ............................................................................. 9-10
Upper Cover....................................................................................... 9-10
4.2 ROLLER REPLACEMENT...................................................................... 9-11
4.2.1 PAPER FEED, SEPARATION, AND PICK-UP ROLLERS ............ 9-11
Pick-up Roller..................................................................................... 9-11
Paper Feed Roller .............................................................................. 9-11
Separation Roller ............................................................................... 9-11
4.3 TRAY LIFT AND PAPER END SENSOR REPLACEMENT.................... 9-12
Tray Lift Sensor.................................................................................. 9-12
Paper End Sensor.............................................................................. 9-12
4.4 RELAY SENSOR REPLACEMENT ........................................................ 9-13
4.5 SIDE FENCE POSITION CHANGE ........................................................ 9-14
BY-PASS A689
1 OVERALL MACHINE INFORMATION ....................................... 10-1
1.1 SPECIFICATIONS .................................................................................. 10-1
1.2 MECHANICAL COMPONENT LAYOUT................................................. 10-2
1.3 ELECTRICAL COMPONENT LAYOUT .................................................. 10-3
1.4 ELECTRICAL COMPONENT DESCRIPTION ........................................ 10-3
2 DETAILED DESCRIPTIONS ...................................................... 10-4
2.1 BASIC OPERATION............................................................................... 10-4
2.2 PAPER SIZE DETECTION ..................................................................... 10-5
3 REPLACEMENT AND ADJUSTMENT....................................... 10-6
SM
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A230/A231/A232