HP 8550mfp Service Manual - Page 611
G, H, HP ASAP Automated Support Access Program 64
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formatter assemblies 43 formatter board 254 diagnostics 94 location 42, 43 parts list 515 serial number 93 video test (VX ASIC) 95 formatter pan 272 frequency for replacing consumables 119 front assemblies 251 front cover 2,000-sheet input unit 299 multi-bin mailbox 314, 315 removing 228 switch 187 front door 41 front LED PCA assembly (2,000-sheet input unit) 308 front right cover 229 FRUs (field replaceable units). See field replaceable units (FRUs) full hard disk 396 left (face-up) output bin 480 fuser abnormality detection circuit 166 assembly 518, 556 control process 166 error 373 incompatible 399 installing 127 jams 390 life low 398 location 118 new 406 not installed 400 repetitive defects 467 temperatures 166 fuser kit installing 127 life detection 156 low and out messages 88 parts list 513 percentage life remaining 94 replace frequency 119 resetting life count 92 fusing and delivery process 191 delivery sensor 178, 185, 190, 191 heater safety circuit 166 process 153 rollers 136, 153 G gauge, toner 110 glossy print speeds 23 using 36 See also media Go key 80 graphics resolution 23 guide, input paper. See input paper guide (multi-bin mailbox) H half-toning 139 handling media 29 toner 57 hard disk accessories 22 failure 396 full 396 initializing 88, 407 location 43 new 406 parts list 512 removing 256, 410 test 95 write-protected 396 HCI. See 2,000-sheet input unit HCO. See multi-bin mailbox heaters fusing safety 166 lower and upper fuser 171 names and locations 171 heavy media using 36 See also media height of printer 25 Hewlett-Packard Distribution (HPD) ordering information 61 high capacity output. See multi-bin mailbox high-voltage converter 3. See separation discharge high-voltage converter high-voltage power supply removing 291 high-voltage power supply circuit 167 hot offset print defect 455 HP ASAP (Automated Support Access Program) 64 HP Automated Support Access Program (ASAP) 64 HP Customer Care Online 62 HP dealer, finding 511 HP Direct 66 HP Distribution ordering information 61 HP Driver Distribution Center 66 EN Index 609