HP laserjet 2015 series Manuale Di Servizio

Pagina di 296
Fatal error secondary messages ....................................................................................................... 147
Accessory error secondary messages .............................................................................................. 150
Media problemsolving ........................................................................................................................ 151
Printed page is different from what appeared on screen .................................................................. 153
Garbled, incorrect, or incomplete text ............................................................................... 153
Missing graphics or text, or blank pages .......................................................................... 153
Page format is different from another HP LaserJet printer ............................................... 154
Graphics quality ................................................................................................................ 154
Image problem solving ...................................................................................................................... 155
Light print or faded ............................................................................................................ 155
Toner specks .................................................................................................................... 155
Dropouts ........................................................................................................................... 155
Vertical lines ...................................................................................................................... 156
Gray background .............................................................................................................. 156
Toner smear ...................................................................................................................... 156
Loose toner ....................................................................................................................... 157
Vertical repetitive defects .................................................................................................. 157
Misformed characters ....................................................................................................... 157
Page skew ........................................................................................................................ 158
Curl or wave ...................................................................................................................... 158
Wrinkles or creases .......................................................................................................... 158
Toner scatter outline ......................................................................................................... 159
Clear jams .......................................................................................................................................... 160
Print-cartridge area ........................................................................................................... 160
Input trays ......................................................................................................................... 162
Output bin ......................................................................................................................... 165
Straight-through output path ............................................................................................. 166
Automatic two-sided printing path .................................................................................... 167
Diagnostic resources ......................................................................................................................... 172
Engine test ........................................................................................................................ 172
Continuous self-test .......................................................................................................... 172
Half self-test functional check ........................................................................................... 173
Drum rotation functional check  ........................................................................................ 173
Heating element check ..................................................................................................... 173
High-voltage contacts check ............................................................................................. 174
Checking the print cartridge contacts   ............................................................ 174
Checking the high-voltage connector assembly  ............................................. 175
Network-setup problemsolving .......................................................................................................... 176
Reset the printer ................................................................................................................................ 177
NVRAM initialization ......................................................................................................... 177
Super NVRAM initialization ............................................................................................... 177
Network reset .................................................................................................................... 178
Cold reset .......................................................................................................................... 178
Troubleshooting tools and reference diagrams ................................................................................. 179
Repetitive image defects .................................................................................................. 179
General timing chart ......................................................................................................... 180
Circuit diagram .................................................................................................................. 181
Solenoids .......................................................................................................................... 183
Switches and sensors ....................................................................................................... 184
Rollers and pads ............................................................................................................... 185
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