HP LaserJet M9040/M9050 Service Manual - Page 580
Tray 2 and Tray 3, Resolution Enhancement
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ADF lower registration roller assembly 206 ADF main assembly 176 ADF optical assembly 181 ADF pickup roller assembly 204 ADF pickup roller D 204 ADF separation belt assembly 214 ADF separation belts 217 ADF shading filter 188 ADF upper delivery roller assembly 213 ADF width detection sensor assembly 220 calibrations after parts replacement 332 cartridge fan (fan 5) 268 cartridge release lever 241 control panel 156 controller fan (fan 2) 270 copy processor/connect board 163 DC controller 262 delivery fan assembly 231 delivery motor 233 drum motor 265 duplexer 255 duplexer connector holder assembly 272 feed-drive assembly 266 flatbed covers 164, 166, 167, 168 flatbed fan assembly 203 flatbed intermediate PCA 221 flatbed motor 198 flatbed optical unit 190 flatbed power supply assembly 199 flatbed rail cover 164 formatter 258 fuser assembly 256 fuser delivery-drive assembly 273 fuser-jam-removal knob 245 high-voltage power supply 261 intermediate PCA 224 Jetlink connector 271 laser/scanner assembly 230 low-voltage power supply 259 paper-input unit (PIU) 249 paper-size detection switch PCA 284 pickup motor 196 power-supply fan (fan 1) 267 print cartridge 242 print engine covers 234, 236, 238, 239 print engine doors 235, 238 registration assembly 252 registration-jam-removal knob 246 right and left rail covers 240 rollers (pickup, feed, or separation) 245 scan engine 225 scanner controller board 222 scanner glass 174 shutter solenoid 195 toner-sensor contact assembly 264 transfer-guide assembly 253 transfer-roller assembly 243 Tray 1 248 Tray 2 and Tray 3 244 Tray 4 279 Tray 4 back covers 278 Tray 4 controller board 283 Tray 4 drive assembly 282 Tray 4 drive motor 281 Tray 4 left side cover 276 Tray 4 paper-connecting unit 288 Tray 4 pickup assembly 286 Tray 4 power supply 285 Tray 4 registration assembly 280 Tray 4 right side cover 277 Tray 4 rollers 279 weight solenoid 194 repeating defect ruler 391 replaceable parts illustrations and part numbers 406 See also remove and replace parts Reset button 12 Resets menu, control panel 46 resolution digital sending 21 dpi 3 e-mail 20 faxes 19 print settings 42 scan engine 124 Resolution Enhancement technology (REt) 42 rollers ADF pickup roller home position control 122 clean ADF 88 feed roller assembly in ADF, remove 205 feed, pickup, or separation, remove 245 lower delivery roller in ADF, remove and reinstall 212 lower registration roller assembly in ADF, remove and reinstall 206 pickup roller assembly in ADF, remove and reinstall 204 pickup roller D in ADF, remove 204 scanner 106 transfer roller assembly, illustrations and parts list 472 transfer-roller assembly, remove and reinstall 243 Tray 4 rollers, remove and reinstall 279 upper delivery roller assembly in ADF, remove and reinstall 213 S saddle stitching 9 safety statements 551, 552 Save + Restore 398 scan engine assembly, illustrations and parts list 412 block diagram, operation sequence 107 controller circuit 113 covers and panels 414 remove and reinstall 225 562 Index ENWW