Print Settings tab..................................................................................................57
Fax Settings tab...................................................................................................57
Copy Settings tab.................................................................................................57
Network Settings tab............................................................................................57
HP Toolbox links...................................................................................................................58
Other links.............................................................................................................................58
Embedded Web server..........................................................................................................................59
Features................................................................................................................................59
3 Maintenance
Chapter contents...................................................................................................................................61
Life expectancies of components..........................................................................................................62
Cleaning the device...............................................................................................................................64
Cleaning the device exterior and scanner............................................................................64
Cleaning the paper path.......................................................................................................65
Managing supplies.................................................................................................................................68
Supplies life...........................................................................................................................68
Checking and ordering supplies...........................................................................................68
To check status and order supplies using the control panel................................68
To check status and order supplies using the HP Toolbox.................................69
Storing supplies....................................................................................................................69
Replacing and recycling supplies.........................................................................................69
HP policy for non-HP supplies..............................................................................................69
Resetting the device for non-HP supplies............................................................69
HP fraud hotline....................................................................................................................70
4 Theory of operation
Chapter contents...................................................................................................................................71
Introduction............................................................................................................................................72
Engine control system...........................................................................................................................76
Basic sequence of operation................................................................................................76
Power-on sequence..............................................................................................................78
Motors and fans....................................................................................................................79
Laser/scanner system...........................................................................................................................80
Pickup and feed system........................................................................................................................81
Optional tray 2.......................................................................................................................83
Jam detection........................................................................................................................84
Photosensors and switches..................................................................................................85
Solenoids and clutches.........................................................................................................87
Printed circuit assemblies.....................................................................................................89
Image-formation system........................................................................................................................91
Image-formation process......................................................................................................93
Latent-image-formation stage...............................................................................................94
Step 1: primary charging......................................................................................94
Step 2: laser-beam exposure...............................................................................94
Developing stage..................................................................................................................95
Step 3: auxiliary developing.................................................................................95
Step 4: developing...............................................................................................95
Transfer stage.......................................................................................................................96
Step 5: primary transfer........................................................................................96
ENWW v
