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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