Print cartridge problems..................................................................................................161 Solving image-quality problems .....................................................................................162 Clearing jams ........................................................................................................................170 Print-cartridge area .........................................................................................................170 Input trays .......................................................................................................................172 Output bin .......................................................................................................................176 Straight-through output path ...........................................................................................176 Automatic two-sided printing (duplexing) path ...............................................................178 Functional checks..................................................................................................................182 Engine test.......................................................................................................................182 Printing an engine test.....................................................................................................182 Half self-test functional check..........................................................................................183 To perform a half self-test check.....................................................................................183 To perform other checks .................................................................................................183 Drum rotation functional check .............................................................................................184 Heating element check...........................................................................................................185 High-voltage contacts check..................................................................................................186 To check the print cartridge contacts ............................................................................186 To check the high-voltage connector assembly .............................................................186 Wired network setup problemsolving ....................................................................................187 NVRAM initialization...............................................................................................................188 Cold reset...............................................................................................................................189 Troubleshooting tools and reference diagrams.....................................................................190 Repetitive image defects.................................................................................................190 General timing chart........................................................................................................191 Circuit diagram.................................................................................................................192 Solenoids.........................................................................................................................194 Switches and sensors......................................................................................................195 Rollers and pads..............................................................................................................196 8 Parts and diagrams Chapter contents....................................................................................................................197 Ordering parts and supplies ..................................................................................................198 Parts ...............................................................................................................................198 Related documentation and software .............................................................................198 Supplies ..........................................................................................................................198 Consumables and accessories..............................................................................................199 Assembly locations................................................................................................................202 Covers....................................................................................................................................206 Internal assemblies................................................................................................................208 Alphabetical parts list.............................................................................................................226 Numerical parts list.................................................................................................................230 Index vi ENWW