HP 8550 Service Manual - Page 726
J, K, L, L/Ca/Cb conversions 214
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delays 210, 211 digital 206 G 205, 210, 211 R 210 skipping 192 image start positions adjusting 84, 89 resetting 90 troubleshooting 466 IMG-REG settings (color image displacement) 85, 90 inches, settings for 53 in-country Customer Care Centers 46 indicator PCB 288 indicators diagrams 30 original set 58, 269 indicators, status overview 49 initial screens service mode 60, 61 inlet guide plate, removing 397 input devices, troubleshooting 459 inputs DADF controller PCB 246 deck controller PCB 321 reader controller PCB circuitry 180 inside guide plate removing 399 installing firmware image file 136 Service Support Tool 135 intensity detection PCB removing 364 replacing 133 intensity, scanning lamp adjusting 95 checking 195 controlling 194 measured by CCD 208 interface cable, part numbers 119 PCB assembly, part numbers 119 serial (C-link) 304 interface connector, diagrams 33 intermediate transfer drum (ITD) cleaning faults 99, 100, 463 faults 471 theory of operation 187 internal components copy module, diagrams 564, 566, 568 copy module, part numbers 565, 566, 569 high-capacity input (HCI), diagrams 656, 658, 660 high-capacity input (HCI), part numbers 657, 659, 661 non-HP, removing 457 interrupt copying 51 interrupt key 49 intervals, uneven 470 inverter, control panel diagrams 586 part numbers 586 inverter, copy module diagrams 590 part numbers 590 removing 376 IOT cable, part numbers 119 IPC communication 245 isolating problems 458 ITD (intermediate transfer drum) cleaning faults 99, 100, 463 theory of operation 187 J JAM menu 67 jams clearing 281 code initialization 94 display mode screens 71 high-capacity input (HCI) 313 history 67 menu 67 originals 58 originals improperly placed 282 pick-up 72, 74 pick-up blocks 543 preventing 146 sensors 73 types of 72 joints, part numbers 691 K keypad function 50 part numbers 691 service mode keys 61 testing 94 keys control panel 96 functions 49, 50 part numbers 691 preference 54 reset 61 L L/Ca/Cb conversions 214 labels part numbers 692 power rating 457 service 62 724 Index EN