HP 1320 Service Manual - Page 8

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