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