Image problems..................................................................................................................280 Media-handling problems...................................................................................................282 Performance problems.......................................................................................................283 Fax problems.......................................................................................................................................285 Problems receiving faxes....................................................................................................285 Problems sending faxes.....................................................................................................287 Voice call problems.............................................................................................................288 Media-handling problems...................................................................................................289 Performance problems.......................................................................................................289 Memory card problems........................................................................................................................291 Missing or wrong files.........................................................................................................291 Index page not printing.......................................................................................................291 Proof sheet not printing.......................................................................................................292 Proof sheet not scanning....................................................................................................292 Issues with photo printing...................................................................................................293 Functional tests....................................................................................................................................295 Engine test..........................................................................................................................295 Half self-test check..............................................................................................................296 Heating element test...........................................................................................................296 Cartridge high-voltage contact test.....................................................................................299 Paper-path test...................................................................................................................299 Service-mode functions.......................................................................................................................301 NVRAM initialization...........................................................................................................301 Secondary service menu....................................................................................................301 To print secondary service reports.....................................................................303 Troubleshooting tools..........................................................................................................................306 Device pages and reports...................................................................................................306 Demo page.........................................................................................................306 Configuration page.............................................................................................306 Supplies Status page.........................................................................................306 Usage page........................................................................................................306 Engine-test page................................................................................................307 Error log..............................................................................................................307 Fax reports..........................................................................................................................307 Fax activity log...................................................................................................307 Fax call report....................................................................................................307 T.30 protocol trace.............................................................................................308 HP Toolbox.........................................................................................................................317 To view HP Toolbox...........................................................................................317 Troubleshooting tab...........................................................................................317 Service menu......................................................................................................................318 Restoring the factory-set defaults......................................................................318 Cleaning the paper path.....................................................................................318 Setting the scanner bulb power save time.........................................................319 Reducing paper curl...........................................................................................319 Service-only tools................................................................................................................320 Timing charts......................................................................................................320 Locations of connectors.....................................................................................322 DC controller connections..................................................................................325 Printer calibration...............................................................................................326 ENWW ix