PJL overview
....................................................................................................................
77
Printer functions (all models)
...................................................................................................
78
Engine control system (engine control unit and power-supply assembly)
........................
78
Image-formation system
....................................................................................................
83
Print cartridge
....................................................................................................................
84
Printer paper-feed system
.................................................................................................
84
Jam detection in the printer
..............................................................................................
85
HP LaserJet 3015 all-in-one unique components
....................................................................
87
Basic operation
..................................................................................................................
87
HP LaserJet 3020 and 3030 all-in-one unique components
....................................................
93
Scanner and ADF functions and operation
......................................................................
93
Fax functions and operation (HP LaserJet 3015 and 3030 only)
...........................................
96
PSTN operation
................................................................................................................
96
The fax subsystem
...........................................................................................................
96
Formatter in the fax subsystem
........................................................................................
96
LIU in the fax subsystem
..................................................................................................
96
Fax page storage in flash memory
...................................................................................
99
5 Removal and replacement
Removal and replacement strategy
.......................................................................................
103
Required tools
..................................................................................................................
103
Before performing service
...............................................................................................
103
After performing service
..................................................................................................
104
Parts removal order
.........................................................................................................
104
HP LaserJet 3015 all-in-one
..................................................................................................
107
Link assemblies and scanner support frame springs
......................................................
107
Scanner side covers
........................................................................................................
110
Separation-pad set
..........................................................................................................
111
Control-panel bezel
.........................................................................................................
112
Control-panel assembly
...................................................................................................
113
Media lever and media lever torsion spring
....................................................................
114
Separation pad assembly
................................................................................................
115
Scanner assembly
...........................................................................................................
118
Scanner assembly top cover
...........................................................................................
126
Top-cover assembly
........................................................................................................
129
Pickup roller
....................................................................................................................
130
White platen
.....................................................................................................................
131
HP LaserJet 3020 and 3030 all-in-one
..................................................................................
133
ADF input tray
..................................................................................................................
133
Flatbed lid
........................................................................................................................
134
Link assemblies and scanner support frame springs
......................................................
136
Control-panel bezel
.........................................................................................................
139
Control-panel assembly
...................................................................................................
139
ADF separation pad
........................................................................................................
140
ADF input-tray flag
...........................................................................................................
141
ADF pickup roller
............................................................................................................
142
ADF scanner glass
..........................................................................................................
143
Scanner assembly
...........................................................................................................
145
Printer (product base)
............................................................................................................
153
Printer separation pad
.....................................................................................................
154
Print cartridge
..................................................................................................................
154
Printer pickup roller
..........................................................................................................
156
Media input tray
...............................................................................................................
158
Transfer roller
..................................................................................................................
159
Printer side covers
...........................................................................................................
161
ENWW
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