HP LaserJet 9040/9050 Service Manual - Page 324

operating environment acclimating to 170 print cartridges 67 printer, specifications 8, 16 operations bias generation circuits 79 DC controller 76 engine control system 75 formatter 81 high-voltage power supply circuit 78 image formation 84 laser/scanner system 83 low-voltage power supply 80 pickup and feed system 87 power-on 73 sequences 71 systems overview 70 tray 1 93 tray 4 95 ordering parts 14 orientation default 43 error messages 185 output bins event log error messages 179 fan, removing 115 full, error messages 180, 184 jam detection operations 88 jams, error messages 191 locating 10 paper sizes supported 26 selecting 41 sensors 88, 90 straight paper path, using 244 output quality cleaning page, creating 65 settings 44 specifications 2, 4 troubleshooting 233 overhead transparencies sensor (PS1) 87, 90 specifications 21 overheating, thermistor operations 80 override A4/letter 42 P page counts 231 page orientation default 43 error messages 185 page skew adjustment operations, tray 4 95 specifications 234 troubleshooting 241 pages per minute (ppm) 2, 4 pages per month 3, 5 pan head screws 261 Index308 Index paper coated 22 configuring trays 172 default image size, setting 41 detection operations 87, 96 error messages 185, 204 fuser modes 40, 44 level detection operations 87, 96 preprinted 21 selecting 19, 25 sizes, supported 26 small, mode for 45 storing 22 troubleshooting 244 weight equivalence table 23 paper deck drive assembly, part numbers 258 Paper handling menu 39 paper input unit (PIU) diagrams and part numbers 278 part numbers 257 reinstalling 128 removing 126 paper jams. See jams paper path cleaning 63 straight 244 test, printing 213 test, settings 54 tray 1 sensor (PS2502) 93, 94 paper pickup assembly, part numbers 258 paper-size detection switch PCB (tray 4), removing 160 parallel communication operations 81 parallel connector, locating 11 Parallel input submenu 48 parallel port, supported 3, 5 part numbers alphabetical list 291 consumables, accessories, and documentation 257 numerical list 296 voltage 256 parts ordering 14 removing and replacing 99 Pause/Resume key, control panel 31 pay-per-page 231 PCB assemblies, diagrams and part numbers printer 283 tray 4 289 PCBA, screws for 261 PCI slots 81 PCL font list, printing 38 PCL language, features 2, 4 PCL menu 42 PDF error page 42 perforated media, avoiding 22 Perform Printer Maintenance message 60 periods image formation 84 operations 71 power-on 73 personalities default, setting 47 error messages 181 included 2, 4 phases image formation 84 operations 71 power-on 73 phone numbers, ordering parts 14