HP 8550 Service Manual - Page 731
unique to HP LaserJet 8550 MFP 119, Customer Care Centers 45
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Page 731 highlights
remaining, detection of 310, 311 size, automatic selection 51, 197 sizes supported 25, 29 specifications 29 terminology, sizes 103 top pick-up mode 256, 257 transfer bias, adjusting 87, 88 troubleshooting 463 types of 87, 88 upper guide assembly 636 wrinkled 544 paper deflecting plate diagrams 31 paper deflecting solenoid positioning 426 paper feed motor diagrams and part numbers 632 paper feeding, testing 95 paper pick-up assembly (HCI) diagrams 664, 666 part numbers 665, 667 paper pick-up roller lifespan 163 paper retaining plate diagrams 31 paper retaining plate solenoid positioning 424 paper separation assembly diagrams 642 part numbers 643 paper stopper plate diagrams 31 overriding 283 paperclip holder 50 paper-retaining solenoid removing 396 paper-size limit panel diagrams 34 paper-size selection tab diagrams 33 part numbers alphabetical list 680 automatic document feeder (ADF) 600 copy module 558 high-capacity input (HCI) 649 numerical list 672 stand assembly 556, 557 unique to HP LaserJet 8550 MFP 119 parts assembling 332 disassembling 332 exchanging 41 HP Direct 44 life spans 163 ordering 39 periodic replacement 163 EN phone number identification 44 unique to HP LaserJet 8550 MFP 119 website information 40 PASCAL menu 86, 91 passwords, erasing 57 patterns, test print 465 PC, connecting to 137, 138 periodically replaced parts 163 phone numbers automated support 42 Customer Care Centers 45 ordering 41 ordering centers 40 sales centers 44 photo mode 109 photocells 201 photointerrupter operations of 198 part numbers 694 testing 527 photos settings for 53 sharpness 121 photosensitive drum condensation 463 faults 474 life span 69 theory of operation 187 troubleshooting 482 picking up originals failures 283 jams 280 last original detection 274 reversal operation 261 small sizes 268 top pick-up mode 251, 256, 257 picking up paper block jams 543 sequence of operations 307 testing 539 pick-up delay jams 313 pick-up guide condensation in 463 pick-up jams 72, 74 pick-up mode exiting 540 pick-up motor automatic document feeder (ADF) 249 controlling 275 drive signals 276 high-capacity input (HCI) 307 removing 385, 452, 453 sequence of operations 256 speed 275 testing 539 pick-up paper sensor 79 Index 729