HP LaserJet 9000 Service Manual - Page 325

photosensitive drum bias generation 79 cleaning process, image formation operations 85 feed drive assembly, diagrams and part numbers 274 ground path, troubleshooting 239 image defects, troubleshooting 234 image formation operations 84 rotation check 220 physical specifications 7 pickup and feed system feed-drive assembly, removing 142 motors, solenoids, and clutches 92 operations 87 sensors and switches 89 tray 1 93 tray 4 95 pickup assembly (tray 4), removing 162 pickup delay jams tray 1 94 tray 2 or 3 88 tray 4 96 pickup feed guide (tray 4), removing 163 pickup motor (SMT3) 92 pickup roller up and down motor (SMT1) 92 pickup rollers included in printer maintenance kit 60 printer, removing 122 tray 1 93, 94 tray 4 96, 155 pickup shaft home-position sensor (PS1413) 90 pickup solenoid, tray 1 (SL2501) 93, 94 ping tests 248 PINs error messages 182 Service menu 215 PIU (paper input unit) diagrams and part numbers 278 part numbers 257 reinstalling 128 removing 126 plastic, screws for 261 portrait orientation error messages 185 setting as default 43 ports, supported 3, 5 PostScript error pages 42 PostScript font list, printing 38 PostScript Level 3 emulation 2, 6 power consumption, specifications 7 switch, locating 10 troubleshooting 174 power supplies fan, removing 143 high-voltage, removing 137 low-voltage 80 low-voltage, removing 136 part numbers 257 tray 1 93 tray 4, operations 95 tray 4, removing 161 power-on sequence 73 PowerSave energy consumption 7 fan operation during 174 settings 32, 46 ppm (pages per minute) 2, 4 preliminary operating checks, troubleshooting 170 preprinted media specifications 21 preprinted paper, fuser mode 44 prepunched paper, fuser mode 44 pre-registration roller drive clutch (CL2) 92 pressure roller bias generation 79 cleaning 65 fuser wrapping jam detection operations 87 heating operations 80 image formation operations 84, 85 pre-transfer process, image formation operations 84 pre-transfer upper guide bias generation 79 primary charging roller bias generation 79 image defects, troubleshooting 236 image formation operations 84 print bias, operations 79 print cartridges capacity 2, 4 checking 234 components, operations 85 EconoMode 45, 68 error messages 181 fan, removing 144 handling 67 image formation operations 84 level detection operations 79, 86 lifter assembly, diagrams and part numbers 276 low 47 noise, troubleshooting 171 non-HP 68 ordering 14 out, settings 47 part numbers 257 refilled 68, 220 release lever, removing 117 removing 62, 119 ROM, memory operations 86 seals, automatic roll-up 86 storing 67 supplies status page information 230 weight 68 print quality cleaning page, creating 65 settings 44 troubleshooting 233 Print quality menu 44 PRINT sequence 72 print servers EIO menu 49 models including 6 networks supported 81 troubleshooting 246, 250 print servers, part numbers 258 printer drivers, changing settings from 36 printer languages default, setting 47 error messages 181 included 2, 4 printer maintenance kits installation guide 260 part numbers 257 replacing 60 printer messages alphabetical list 180 event log codes 175 numerical list 188 types of 178 Printing submenu 41 priorities, messages 178 Index Index309