HP LaserJet 4250 Service Manual - Page 533

HP-authorized resellers and support 445 service agreements 445 supplies ordering 446 photosensitive drum image-formation operations 106, 153 troubleshooting 380 physical specifications 18, 52 pickup roller, replacing tray 1 179 pickup-and-feed system operations 1,500-sheet tray 128 500-sheet feeder 125 about 106, 114 duplexer 134 envelope feeder 132 fuser/delivery block 122 jam detection, duplexer 136 jam detection, envelope feeder 133 jam detection, stacker 141 jam detection, stapler/stacker 152 jam detection, trays 122 multiple-feed prevention 121 skew prevention 121 stacker 137 stapler/stacker 142 tray 1 117 tray 2 119 PINs, Service menu 323 PJL (printer job language) 164 platforms supported 12, 13 PML (printer management language) 165 ports cables 452 locating 11 operations 162 troubleshooting 331 postcards 26 PostScript error pages 70 PostScript Printer Description (PPD) files 17 PostScript, setting as printer language 75 power specifications 20 troubleshooting 306 power supply locating 415 operations 105, 110 part numbers 453 removing 236 power switch, locating 9 power-on bypass 328 PowerSave. See Sleep mode PPDs, included 17 preprinted paper fuser modes 71 primary charging roller operations 153 print cartridges EconoMode 72 image-formation operations 153 low 76 memory chip 160 out 76 part numbers 447 recycling 45 replacing 175 supplies status page 314 troubleshooting 380 warranty 41 print quality black pages 398 blank pages 399 blurred print 397 cleaning page 83 dark print 400 defect examples 382 distorted images 391 dots 385 dropouts 386 grey background 388 jams 378 light print 383 lines 387, 396, 397 media problems 377, 379 print cartridge checks 380 repeating defects 390, 400 settings 72 toner smear 389 transparencies 378 troubleshooting 379 white lines 394 white spots 396 Print Quality menu 71 print-cartridge motor, removing 253 Printer Dialog Extensions (PDEs), Macintosh 17 printer drivers. See drivers printer job language (PJL) 164 printer maintenance kit message, clearing 78 replacing 86 supplies status page 314 printer management language (PML) 165 Printer Status and Alerts 317 Printing menu 68 processor operations 163 ProRes resolution 72 PS driver features 14 operating system supported 13 PS error pages 70 PS font list, printing 63 PS, setting as printer language 75 Q quality black pages 398 blank pages 399 blurred print 397 cleaning page 83 dark print 400 defect examples 382 distorted images 391 dots 385 dropouts 386 grey background 388 jams 378 light print 383 lines 387, 396, 397 media problems 377, 379 print cartridge checks 380 repeating defects 390, 400 settings 72 toner smear 389 transparencies 378 troubleshooting 379 white lines 394 white spots 396 quick copy jobs 74 Index 519