Timing diagram ............................................................................................... 203
Circuit diagram ................................................................................................ 204
Print-quality troubleshooting tools .................................................................................... 205
Repetitive image defects ................................................................................. 205
Calibrate the product ....................................................................................... 205
Internal print quality test pages ........................................................................................ 206
Cleaning page ................................................................................................. 206
Service page ................................................................................................... 206
Diagnostics pages ........................................................................................... 206
HP ToolboxFX software ................................................................................................... 208
Control-panel messages .................................................................................................................. 209
Event-log messages ......................................................................................................................... 217
Paper-handling problems ................................................................................................................. 219
Jams ................................................................................................................................ 219
Recover jams .................................................................................................. 219
Common causes of jams ................................................................................. 220
Clear jams ....................................................................................................... 221
Where to look for jams .................................................................... 221
Clear jams from the input-tray areas .............................................. 221
Clear jams from the output-bin ....................................................... 222
Clear jams from the ADF (fax/memory-card models only) ............. 223
Solve image quality problems .......................................................................................................... 227
General image quality problems ...................................................................................... 227
Solve issues with color documents .................................................................................. 231
Copy problems ................................................................................................................. 232
Prevent copy problems ................................................................................... 232
Image problems .............................................................................................. 232
Media-handling problems ................................................................................ 234
Performance problems .................................................................................... 235
Scan problems ................................................................................................................. 236
Solve scanned-image problems ...................................................................... 236
Scan-quality problems ..................................................................................... 238
Prevent scan-quality problems ....................................................... 238
Solve scan-quality problems ........................................................... 238
Solve performance problems ........................................................................................................... 240
Solve connectivity problems ............................................................................................................. 241
Solve direct-connection problems .................................................................................... 241
Solve network problems (network models only) .............................................................. 241
Service mode functions .................................................................................................................... 243
Service menu ................................................................................................................... 243
Service menu settings ..................................................................................... 243
Secondary service menu ................................................................................................. 243
Open the secondary service menu ................................................................. 243
Secondary service menu structure .................................................................. 244
ENWW ix
