User Guide

Information menu..................................................................................................................63
Paper-handling menu............................................................................................................64
Configure-device menu ........................................................................................................68
Printing submenu ................................................................................................68
Print-quality submenu .........................................................................................71
System Setup submenu ......................................................................................74
Stapler/stacker submenu ....................................................................................77
I/O submenu ........................................................................................................77
Resets submenu (HP LaserJet 4250/4350 only).................................................78
Diagnostics menu (HP LaserJet 4250/4350 only) ...............................................................80
4 Maintenance
Chapter contents...................................................................................................................................81
Cleaning the printer and accessories ..................................................................................................82
Cleaning the fuser.................................................................................................................83
Running the cleaning page manually...................................................................................83
To run the cleaning page manually......................................................................83
Running the cleaning page automatically.............................................................................85
To run the cleaning page automatically...............................................................85
Cleaning spilled toner .........................................................................................................85
Performing preventive maintenance......................................................................................................86
Resetting the maintenance-kit counter (LJ 4200/4300)........................................................86
Resetting the maintenance-kit counter (LJ 4250/4350)........................................................87
Maintenance kit part numbers .............................................................................................87
Expected life of components ................................................................................................88
Maintaining the stapler unit....................................................................................................................89
To remove and replace the stapler unit................................................................................89
Loading staples.....................................................................................................................90
To load staples ....................................................................................................90
Downloading a remote firmware update................................................................................................91
Downloading the new firmware to the printer.......................................................................91
Remote firmware update through a local Windows port ......................................................92
Windows 95, Windows 98, or Windows Me ........................................................92
Windows NT 4.0, Windows 2000, Windows XP, or Windows Server 2003.........93
Remote firmware update through a Windows network.........................................................93
Remote firmware update for UNIX systems.........................................................................93
Remote firmware update using FTP on a direct network connection ..................................93
Windows operating systems ...............................................................................94
Mac operating systems.........................................................................................................95
Remote firmware update using FTP through a browser.......................................................................96
Remote firmware update using Fetch (Mac OS 8.6 and OS 9.x only) .................................................97
Remote firmware update using the HP LaserJet utility (Mac OS 8.6 and OS 9.x only)........................98
Remote firmware update using the LPR command .............................................................................99
Using HP Web JetAdmin to download the firmware to the printer......................................................100
Printer messages during firmware update..........................................................................................101
Troubleshooting a firmware update.....................................................................................................102
5 Theory of operation
Chapter contents.................................................................................................................................103
Introduction .........................................................................................................................................104
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