HP P2015 Service Manual - Page 8

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 vi ENWW