Chapter contents
................................................................................................................................
55
Basic operation
...................................................................................................................................
56
ADF/scanner system
.........................................................................................................
57
ADF
...................................................................................................................
57
Sensors in the ADF
..........................................................................
57
ADF paper path
................................................................................
57
Scanner
.............................................................................................................
58
Formatter
...........................................................................................................................
59
Engine control unit (ECU)
..................................................................................................
60
Pickup/feed/delivery system
..............................................................................................
62
Laser/scanner system
........................................................................................................
63
Image-formation system
....................................................................................................
64
Step 1: Primary charging
...................................................................................
65
Step 2: Laser beam exposure
...........................................................................
65
Step 3: Developing
............................................................................................
65
Step 4: Transfer
................................................................................................
66
Step 5: Separation
............................................................................................
66
Step 6: Fusing
...................................................................................................
67
Step 7: Drum cleaning
.......................................................................................
67
Internal components
...........................................................................................................................
68
Timing
.................................................................................................................................................
69
Print cartridge memory system
...........................................................................................................
73
5
Removal and replacement
Chapter contents
................................................................................................................................
75
Introduction
.........................................................................................................................................
77
Removal and replacement strategy
..................................................................................
77
Electrostatic discharge
.......................................................................................................
77
User-replaceable parts
......................................................................................................
77
Required tools
....................................................................................................................
78
Before performing service
..................................................................................................
78
Parts removal order
...........................................................................................................
79
Automatic document feeder (ADF) and scanner assemblies
.............................................................
80
ADF assembly
...................................................................................................................
80
ADF cover
.........................................................................................................
80
ADF input tray
...................................................................................................
82
Control panel
.....................................................................................................
84
ADF
...................................................................................................................
87
Scanner assembly
.............................................................................................................
90
Covers
................................................................................................................................................
94
Right-side cover
.................................................................................................................
94
Formatter shield
.................................................................................................................
95
Fax cover
...........................................................................................................................
96
Left-side cover
...................................................................................................................
97
Legal cover (dust cover)
..................................................................................................
100
Back cover
.......................................................................................................................
101
I/O cover
..........................................................................................................................
103
Fax rail
.............................................................................................................................
104
Top cover
.........................................................................................................................
105
Front, right cover
..............................................................................................................
109
ENWW
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