HP P2035n Service Manual - Page 10

Solve general problems ...186 Troubleshooting checklist 186 Factors that affect product performance 187 Basic problem solving ...188 Menu map (HP LaserJet P2050 Series Printers only 190 Troubleshooting process ...191 Pre-troubleshooting checklist 191 Tools for troubleshooting ...193 Continuous self-test (HP LaserJet P2050 Series only 193 Half self-test functional check 193 Drum rotation functional check 193 Heating element check ...194 High-voltage contacts check 194 Checking the print cartridge contacts 194 Component locations ...196 Problem-solve diagrams ...202 Repetitive image defect ruler 202 Engine controller PCA ...203 Major components ...205 PCAs ...206 General timing chart ...207 Circuit diagram ...207 Status-light patterns (HP LaserJet P2030 Series Printers only 209 Status-alert messages (HP LaserJet P2030 Series Printers only 215 Interpret control-panel messages (HP LaserJet P2050 Series Printers only 219 Control-panel messages 219 Event-log messages ...227 Print the event log (HP LaserJet P2050 Series Printers only 227 Print an event log (HP LaserJet P2030 Series Printers only 227 Event log messages ...227 Paper-handling problems ...229 Jams ...229 Common causes of jams 229 Jam locations 230 Clear jams ...230 Internal areas 230 Input trays 235 Output bins 239 Solve image-quality problems ...241 Printed page is different from what appeared onscreen 241 Image defect examples ...242 Light print or faded 242 Toner specks 243 Dropouts ...243 viii ENWW