Theory Of Operation - Xerox 7300B - Phaser Color Laser Printer Service Manual

Theory of Operation

Contents
Mechanical Process of the Printer ......................................................................................8 - 220
Summary of the Printing Process .......................................................................................8 - 221
Charging .............................................................................................................................8 - 222
Exposure .............................................................................................................................8 - 222
Developing..........................................................................................................................8 - 222
Transfer...............................................................................................................................8 - 223
Fusing .................................................................................................................................8 - 224
Imaging Unit Cleaning .......................................................................................................8 - 225
Transfer Unit Cleaning .......................................................................................................8 - 225
Summary of the Paper Path ................................................................................................8 - 226
Paper Fed from Tray 1........................................................................................................8 - 227
Paper Fed from Optional Trays ..........................................................................................8 - 228
Paper Fed from the Multi-Purpose Tray .............................................................................8 - 229
Transfer Unit.......................................................................................................................8 - 230
Imaging Unit Up/Down Movement....................................................................................8 - 231
Transfer Unit Arm and Gear Up/Down Movement of the Imaging Units .........................8 - 232
Fuser and Paper Exit...........................................................................................................8 - 233
Duplex Unit ........................................................................................................................8 - 234
Paper Jam Detection ...........................................................................................................8 - 235
Paper Size Sensing..............................................................................................................8 - 236
Fuser Temperature Settings ................................................................................................8 - 237
Cover Open Detection ........................................................................................................8 - 238
Toner Detection ..................................................................................................................8 - 239
Toner Full State ..................................................................................................................8 - 239
Toner Low State .................................................................................................................8 - 240
Color Registration Detection ..............................................................................................8 - 241
Customer Replaceable Consumable Detection...................................................................8 - 242
Customer Replaceable Consumable (CRC) Life Counter Behavior ..................................8 - 242
Printer Components ............................................................................................................8 - 244
Engine Controller Board Connectors .................................................................................8 - 246
Sensors................................................................................................................................8 - 248
Sensor Location and Function............................................................................................8 - 249
Clutches, Motors and Solenoids.........................................................................................8 - 250
Theory of Operation 8-219