HP LaserJet 9040/9050 Service Manual - Page 329

tray 2 or 3 See also trays configuring 173 diagrams and part numbers 277 feeding, troubleshooting 171 guides, adjusting 224 jam detection operations 88 locating 10 media detection operations 87 media-length detection switches 90 noise, troubleshooting 171 paper sizes supported 26 pickup and feed operations 87 registration 33 removing 121 sensors 90 settings 39 tray 4 See also trays back covers, removing 153 communications, troubleshooting 228 configuring 173 controller board, removing 159 diagnostics 221 drive assembly, diagrams and part numbers 288 drive assembly, removing 158 drive motor, removing 157 feeding operations 95 feeding, troubleshooting 171 guides, adjusting 224 Install guide 259 jam detection operations 96 left side cover, removing 151 lights, interpreting 223 locating 10, 12 main body, diagrams and part numbers 284 models including 6 motors, testing 221 noise, troubleshooting 171 paper sizes supported 26 paper-size detection switch PCB, removing 160 part number 258 PCB, diagrams and part numbers 289 pickup assembly, removing 162 pickup feed guide, removing 163 power supply, operations 95 power supply, removing 161 printing, troubleshooting 171 registration assembly, removing 156 registration settings 33 removing covers and assemblies 151 removing from printer 154 right side cover, removing 152 rollers included in printer maintenance kit 60 rollers, removing 155 sensors, testing 222 settings 39 space requirements 18 stand-alone running test 222 trays capacities 26 configuration page information 228 detectable size error messages 182 feeding, troubleshooting 171, 172 included 2 jams, error messages 188, 199 jams, troubleshooting 224 Jet-Link device error messages 179 media error messages 186, 187 paper path test 213 paper sizes, supported 26 part numbers 259 registration 33, 44 selecting 46, 172 unexpected size, error messages 204 troubleshooting about 167 blank pages 236 blurry images 238 bubbles 239 communications 246 connectivity 250 diagnostics flowchart 216 dropouts 238 embedded LAN 247 formatter replacement 250 gray background 239 hard disk 217, 218, 219, 220 horizontal lines 239 HP Jetdirect print servers 246 image quality 233 light print 240 loose toner 240 media 244 misformed characters 242 noise 171 power 174 preliminary operating checks 170 process flow 168 repeating defect ruler 243 repeating defects 240 repeating images 242 skewed pages 241 smeared toner 241 specks, toner 241 tray 4, stand-alone diagnostics 221 vertical lines 241 wiring diagram 251 wrinkled pages 237 TrueType fonts, features 2, 4 two-sided printing 42 types, paper fuser modes 44 tray settings 39 U unexpected size, error messages 204 universal serial bus (USB) communication operations 81 UNIX, carriage return settings 43 Up arrow, control panel 31 upgrading firmware 55 usage page 38, 231 USB communication operations 81 Use guide 259 V vacuuming spilled toner 61 Index Index313