Pickup-and-feed-system ..................................................................................................................... 76 Sensors in the pickup-and-feed system trays (cassettes) ................................................. 76 Cassette pickup mechanism .............................................................................................. 78 Multipurpose-tray pickup mechanism ................................................................................ 78 Feed-speed control ............................................................................................................
80 Sensor jam detection ......................................................................................................... 81 Image-formation system ..................................................................................................................... 83 Image-formation process ................................................................................................... 84 Latent-image formation stage ............................................................................................ 85 Step 1: pre-exposure ......................................................................................... 85 Step 2:
primary charging ................................................................................... 85 Step 3: laser-beam exposure ............................................................................ 85 Developing stage ............................................................................................................... 85 Step 4: developing ............................................................................................ 86 Transfer stage .................................................................................................................... 86 Step 5:
media feed ............................................................................................ 86 Step 6: image transfer ....................................................................................... 86 Step 7: separation from the drum ...................................................................... 87 Step 8: separation from the ETB ....................................................................... 87 Fusing stage ...................................................................................................................... 87 Step 9: fusing ....................................................................................................
87 Cleaning stage ................................................................................................................... 88 Step 10: drum cleaning ..................................................................................... 88 Print cartridge .................................................................................................................... 88 Print-cartridge activation .................................................................................................... 89 5 Removal and replacement Removal and replacement strategy ....................................................................................................
92 Introduction ........................................................................................................................ 92 Required tools ................................................................................................................... 93 Types of screws ................................................................................................................. 94 Service approach ............................................................................................................... 95 Before performing service ..................................................................................................
95 After performing service ..................................................................................................... 95 Print cartridges ................................................................................................................... 96 External doors, covers, and panels .................................................................................................... 97 Front cover ......................................................................................................................... 97 Upper cover (fuser door) ..................................................................................................
100 Rear lower cover .............................................................................................................. 103 Left cover ......................................................................................................................... 104 Right cover ....................................................................................................................... 107 Rear upper cover ............................................................................................................. 111 Internal assemblies ..........................................................................................................................
112 Formatter cage ................................................................................................................ 112 Electrostatic transfer belt (ETB) ....................................................................................... 114 Fuser ................................................................................................................................ 115 Print-cartridge drive motors ............................................................................................. 116 Fuser drive assembly .......................................................................................................
117 Developing separation-drive assembly ............................................................................ 119 Pickup-and-feed assembly .............................................................................................. 124 vi ENWW