Printer preventive maintenance
......................................................................................
179
The ADF maintenance kit
................................................................................................
179
10 Solving problems
Solving general problems
.....................................................................................................
182
Troubleshooting checklist
...............................................................................................
182
Determining MFP problems
..................................................................................................
184
Clearing jams
.........................................................................................................................
185
Clearing jams from the top-cover and print-cartridge areas
............................................
186
Clearing jams from the optional envelope-feeder area
...................................................
188
Clearing jams from the tray 1 area
..................................................................................
189
Clearing jams from the tray 2, 3, 4, or 5 areas
................................................................
191
Clearing jams from the optional duplexer
........................................................................
192
Clearing jams from the output areas
...............................................................................
193
Clearing jams from the fuser
...........................................................................................
195
Clearing jams from the ADF
............................................................................................
198
Clearing staple jams
........................................................................................................
199
Solving repeated jams
....................................................................................................
201
Using the paper-path test
................................................................................................
201
Understanding MFP messages
.............................................................................................
203
Using the MFP help system
............................................................................................
203
If a message persists
......................................................................................................
203
Resolving control-panel messages
........................................................................................
204
Understanding accessory lights for the 3-bin mailbox and stapler/stacker
..........................
216
Accessory lights
..............................................................................................................
216
Replacing accessories or accessory components
.........................................................
217
Understanding lights on the formatter
....................................................................................
218
HP Jetdirect LEDs
...........................................................................................................
218
Heartbeat LED
.................................................................................................................
218
Fax LED
...........................................................................................................................
219
Correcting print-quality and copy-quality problems
..............................................................
220
Print-quality checklist
......................................................................................................
220
Image defect examples
..................................................................................................
220
Light print (partial page)
..................................................................................................
222
Light print (entire page)
..................................................................................................
223
Specks
............................................................................................................................
223
Dropouts
.........................................................................................................................
223
Lines
...............................................................................................................................
224
Gray background
............................................................................................................
224
Toner smear
...................................................................................................................
225
Loose toner
.....................................................................................................................
225
Repeating defects
...........................................................................................................
226
Repeating image
............................................................................................................
226
Misformed characters
.....................................................................................................
227
Page skew
......................................................................................................................
227
Curl or wave
....................................................................................................................
227
Wrinkles or creases
........................................................................................................
228
Vertical white lines
..........................................................................................................
228
Tire tracks
.......................................................................................................................
229
White spots on black
......................................................................................................
229
Scattered lines
................................................................................................................
229
Blurred print
....................................................................................................................
230
Random image repetition
...............................................................................................
230
Blank page (ADF)
............................................................................................................
231
Horizontal lines (ADF)
.....................................................................................................
231
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