4
Top Cover Set Sensor, Original Set Sensor .................................................................................................... 219
ADF Drive Motor ............................................................................................................................................ 219
ADF Feed Clutch............................................................................................................................................. 220
ADF Registration Sensor ................................................................................................................................ 220
ADF Feed Sensor ............................................................................................................................................ 221
CIS Unit ........................................................................................................................................................... 224
Scanner................................................................................................................................................................. 230
Scanner Unit .................................................................................................................................................... 230
Scanner Unit with the ADF ............................................................................................................................. 231
ADF Set Sensor ............................................................................................................................................... 235
Scanner Front Cover ........................................................................................................................................ 237
Scanner HP Sensor .......................................................................................................................................... 237
Scanner Motor ................................................................................................................................................. 239
Scanner Carriage ............................................................................................................................................. 241
Laser Optics ......................................................................................................................................................... 245
Caution Decal Location ................................................................................................................................... 245
Laser Units....................................................................................................................................................... 245
LD Unit Cooling Fan....................................................................................................................................... 247
PCDU, Toner Supply ........................................................................................................................................... 249
PCDU (Photo Conductor and Development Unit).......................................................................................... 249
Toner Bottle Detection Board ......................................................................................................................... 250
Toner Supply Motors ...................................................................................................................................... 251
Toner Transport Section .................................................................................................................................. 252
Waste Toner ......................................................................................................................................................... 255
Waste Toner Bottle .......................................................................................................................................... 255
Waste Toner Full Sensor ................................................................................................................................. 256
Waste Toner Bottle Set Switch ....................................................................................................................... 256
Image/Paper Transfer .......................................................................................................................................... 258
ITB (Image Transfer Belt) Unit ...................................................................................................................... 258
ITB Contact Motor .......................................................................................................................................... 260
ITB Contact HP Sensor ................................................................................................................................... 261
ID Sensor ......................................................................................................................................................... 262
ID Sensor Shutter Solenoid ............................................................................................................................. 264
Paper Transfer Roller Unit .............................................................................................................................. 265
Drive .................................................................................................................................................................... 267
Overview ......................................................................................................................................................... 267
Development Motor (CMY) ........................................................................................................................... 267
Drum Motor (CMY) ........................................................................................................................................ 268
Drum Motor (K) .............................................................................................................................................. 268