HP LaserJet 3015 - Page 7

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
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