Jam detection .................................................................................................................. 216
Clear jams from the ADF ................................................................................................. 217
Clear jams from the print-cartridge area .......................................................................... 219
Clear jams from the input-tray areas ............................................................................... 220
Clear jams from the duplexer ........................................................................................... 222
Clear jams from the output-bin areas .............................................................................. 223
Interface troubleshooting ................................................................................................................. 225
Communications checks .................................................................................................. 225
LAN hardware test ........................................................................................................... 225
Service mode functions .................................................................................................................... 226
Boot-up key sequences ................................................................................................... 226
Low-level boot-up key sequence for selecting a language, performing a cold
reset, and enabling and disabling embedded LAN ......................................... 227
Medium-level boot-up key sequence for initializing disks ............................... 227
High-level boot-up key sequence for NVRAM initialization, manufacturing,
and skipping disk-load and calibration ............................................................ 227
Service menu ................................................................................................................... 228
Service ID ........................................................................................................................ 228
Restore the service ID ..................................................................................... 229
Convert the service ID to an actual date ......................................................... 229
Troubleshooting tools ....................................................................................................................... 230
Control-panel menus ....................................................................................................... 230
Print Quality menu ........................................................................................... 230
Troubleshooting menu .................................................................................... 231
Early-boot diagnostic test ................................................................................................ 233
Test pages ....................................................................................................................... 234
Engine-test page ............................................................................................. 234
Formatter test page ......................................................................................... 235
Embedded Web server ................................................................................................... 235
Gaining access to the embedded Web server ................................................ 235
Information tab ................................................................................ 235
Settings tab ..................................................................................... 236
Networking tab ............................................................................... 236
Other links ...................................................................................... 236
Image defect ruler ............................................................................................................ 238
Firmware updates and recovery ....................................................................................................... 239
Determine the current level of firmware ........................................................................... 239
Download the new firmware from the HP Web site ......................................................... 239
Transfer the new firmware to the device .......................................................................... 240
Use FTP to upgrade the firmware on a network connection ........................... 240
Use HP Web Jetadmin to upgrade the firmware ............................................. 241
Use MS-DOS commands to upgrade the firmware ......................................... 242
Upgrade the HP Jetdirect firmware .................................................................................. 242
Troubleshoot general printing problems ........................................................................................... 243
Troubleshoot media-handling problems ........................................................................................... 246
Multiple pages feed .......................................................................................................... 246
Pages are wrinkled or folded ........................................................................................... 246
Pages are skewed ........................................................................................................... 247
Troubleshoot print-quality problems ................................................................................................ 248
Print-quality checklist ....................................................................................................... 248
ENWW vii
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