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