HP 8550 Service Manual - Page 720
D, HP ASAP Automated Support Access Program
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upper left (HCI) 434, 435 upper rear (copy module) 333, 335 upper right (copy module) 333, 334 upper right (HCI) 434, 436 CPU control panel 179, 232, 585 copy module 179 DADF controller PCB 244 CRC (Cyclic Redundancy Check) 139 crossmembers, part numbers 686 CTS-STS menu 67 Customer Care Centers (CCC) Asia Pacific 46 Canada 45 Europe 45 online 40 USA 45 Customer Care Online 40 Customer Information Centers 44 customer support Customer Care Centers (CCC) 45 Customer Information Centers 44 Customer Support Sales Center 44 Dealer Response Line 44 HP ASAP (Automated Support Access Program) 42 HP Direct 44 HP FIRST (Fax Information Retrieval Support Technology) 43 HP Software Distribution Center 44 technical 42 websites 40 Customer Support Sales Center 44 cyan toner cartridge 466 Cyclic Redundancy Check (CRC) 139 cylinder, developing faults 470 troubleshooting 482 D DADF controller PCB automatic document feeder (ADF) 244 inputs 246 pick-up motor drive signals 275 sensors 82 dampers, part numbers 686 data status indicator 49 DC controller PCB resetting 62 dc controller PCB part numbers 119 replacing 120 DC power, troubleshooting 520 DC-CON menu 79 Dealer Response Line 44 deck controller PCB assembly diagrams 668 diagrams 319 lifter operation 310 out-of-paper sensor 307 output 306 overview 304 part numbers 668 removing 453 declarations of conformity 35 default paper detection sizes 273 default settings common 53 customizing 52 delays, image signals 210, 211 delivering originals 266 small size originals 268 delivery jams 280 delivery motor function 249, 267 removing 394 delivery roller cleaning 167 diagrams 31 removing 414, 416 delivery sensor 79 delivery sensor 1 (S6) 279 delivery sensor 2 (S12) 279 delivery tray, automatic document feeder 266 delivery/reversing roller removing 407 DENS (density) settings 85 density auto adjust 53 auto gradation correction 99 black text 53 CMYK, adjusting 85, 109 correction curve 229 dark area faults 466 fine-adjust 121 scanning lamp sensor 69 theory of 216 uneven, troubleshooting 463, 466 detaching mirror positioning tool 351 detecting originals automatic document feeder (ADF) 269, 271 horizontal direction 272, 273 jams 280 size 271 vertical direction 271, 273 detergent, cleaning with 165 developing cylinder faults 470 troubleshooting 482 718 Index EN