Ricoh B230 Service Manual page 20

3.4.3 Rear Cover .................................................................................. 3-15
3.4.4 Right Rear Cover......................................................................... 3-16
3.4.5 Operation Panel........................................................................... 3-16
3.4.6 Dust Filter .................................................................................... 3-17
3.5 Scanner Unit ................................................................................... 3-18
3.5.1 Exposure Glass ........................................................................... 3-18
3.5.2 Original Length/Width Sensors .................................................... 3-19
3.5.3 Exposure Lamp ........................................................................... 3-19
3.5.4 Scanner Motor ............................................................................. 3-21
3.5.5 Sensor Board Unit (SBU) ............................................................ 3-22
3.5.6 Exposure Lamp Stabilizer ............................................................ 3-23
3.5.7 Front Scanner Wire ..................................................................... 3-23
3.5.8 Rear Scanner Wire ...................................................................... 3-26
3.5.9 Touch Panel Position Adjustment ................................................ 3-27
3.6 Laser Optics .................................................................................... 3-29
3.6.1 Caution Decal Location ............................................................... 3-29
3.6.2 Laser Optics Housing Unit ........................................................... 3-29
3.6.3 Polygon Mirror Motor ................................................................... 3-34
3.7 Image Creation................................................................................ 3-36
3.7.1 PCU............................................................................................. 3-36
3.7.2 Drum Unit and Development Unit ................................................ 3-36
3.7.3 Toner Collection Bottle................................................................. 3-40
3.7.4 Toner Supply Tube Fan ............................................................... 3-41
3.7.5 Toner Pump Unit.......................................................................... 3-41
3.7.6 Toner End Sensor........................................................................ 3-47
3.8 Image Transfer ................................................................................ 3-48
3.8.1 Image Transfer Belt Unit.............................................................. 3-48
3.8.2 Image Transfer Belt Cleaning Unit............................................... 3-49
3.8.3 Image Transfer Belt ..................................................................... 3-50
3.9 Paper Transfer ................................................................................ 3-55
3.9.1 Paper Transfer Roller Unit ........................................................... 3-55
3.9.2 Paper Transfer Unit ..................................................................... 3-55
3.9.3 ID Sensor Board .......................................................................... 3-57
3.10 Drive Unit ........................................................................................ 3-60
3.10.1 Drive Unit Fan .......................................................................... 3-61
3.10.2 Gear Unit.................................................................................. 3-61
B230/B237 iv SM