Service Manual
Page 9
... cover 116 Cleaning the toner catch tray 117 Location of consumables in printer 118 Contents of transfer kit 120 Contents of drum kit 124 Contents of fuser kit 127 Cross-section view of internal components 136 Image formation 141 Electrostatic latent image formation block 142 ...11. Figure 28. Figure 5. Figure 14. Figure 18. Figure 26. Figure 33. Figure 12. List of imaging drum 144 Black toner cartridge (left) and color toner cartridge (right) development 145 Primary transfer 146 Post charging 147 Secondary transfer 148 Separation 149 Cleaning roller charging 150 Transfer...
... cover 116 Cleaning the toner catch tray 117 Location of consumables in printer 118 Contents of transfer kit 120 Contents of drum kit 124 Contents of fuser kit 127 Cross-section view of internal components 136 Image formation 141 Electrostatic latent image formation block 142 ...11. Figure 28. Figure 5. Figure 14. Figure 18. Figure 26. Figure 33. Figure 12. List of imaging drum 144 Black toner cartridge (left) and color toner cartridge (right) development 145 Primary transfer 146 Post charging 147 Secondary transfer 148 Separation 149 Cleaning roller charging 150 Transfer...
Service Manual
Page 90
...= (8550 only) QUICK COPY JOBS = (8550 only) PRINT PS ERRORS= NO YES 0 to consumable low and out messages (including TONER LOW, TRANSFER KIT OUT, FUSER LIFE OUT, and DRUM LIFE LOW). Description/action Sets the length of time that an error occurred. Determines the printer response to 50 OFF* ON INITIALIZE DISK...
...= (8550 only) QUICK COPY JOBS = (8550 only) PRINT PS ERRORS= NO YES 0 to consumable low and out messages (including TONER LOW, TRANSFER KIT OUT, FUSER LIFE OUT, and DRUM LIFE LOW). Description/action Sets the length of time that an error occurred. Determines the printer response to 50 OFF* ON INITIALIZE DISK...
Service Manual
Page 121
... should be used to 1.6 months Drum kit Imaging drum Air filters (2) Hand wipe DRUM LIFE LOW REPLACE DRUM KIT 50,000 black-and-white only pages, or 12,500 color pages3 8.3 months for blackand-white only pages, or 2.1 months for color pages Transfer kit Transfer drum Transfer belt Transfer charger Cleaning roller ...wipe FUSER LIFE LOW REPLACE KIT 100,000 pages black-and- 16.7 months for black- In color duplex mode, there are only approximate, and usage conditions and print patterns can be replaced (see page 368. For best print quality output, use HP consumables that appear when ...
... should be used to 1.6 months Drum kit Imaging drum Air filters (2) Hand wipe DRUM LIFE LOW REPLACE DRUM KIT 50,000 black-and-white only pages, or 12,500 color pages3 8.3 months for blackand-white only pages, or 2.1 months for color pages Transfer kit Transfer drum Transfer belt Transfer charger Cleaning roller ...wipe FUSER LIFE LOW REPLACE KIT 100,000 pages black-and- 16.7 months for black- In color duplex mode, there are only approximate, and usage conditions and print patterns can be replaced (see page 368. For best print quality output, use HP consumables that appear when ...
Service Manual
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Replacing consumables Toner cartridges For information about replacing the black and color toner cartridges, see page 100 and page 101. Printer maintenance EN Contents of transfer kit 1 Transfer drum 2 Transfer belt 3 Hand wipe 4 Transfer charger 5 Cleaning roller 6 Charcoal filter 120 Chapter 4 - Transfer kit Replace the parts in the transfer kit when the printer control panel displays: TRANSFER KIT LOW / REPLACE KIT TRANSFER KIT OUT / REPLACE KIT 1 2 3 5 4 6 Figure 20.
Replacing consumables Toner cartridges For information about replacing the black and color toner cartridges, see page 100 and page 101. Printer maintenance EN Contents of transfer kit 1 Transfer drum 2 Transfer belt 3 Hand wipe 4 Transfer charger 5 Cleaning roller 6 Charcoal filter 120 Chapter 4 - Transfer kit Replace the parts in the transfer kit when the printer control panel displays: TRANSFER KIT LOW / REPLACE KIT TRANSFER KIT OUT / REPLACE KIT 1 2 3 5 4 6 Figure 20.
Service Manual
Page 123
... end into the hole in the left end. Note Do not touch the surface of the printer. EN Printer consumables 121 3 To replace the transfer kit 1 Open the front door of the printer. 2 Push the white button on the lower (green) lever and swing the lever to the right. 3 Open the... 8 until it snaps into place. 7 Rotate the transfer belt up using the blue lever on the right side of the printer, and remove the 4 transfer drum. 4 On the right, back wall of the opening . 8 Using the blue handles, lift the belt up and out of the transfer belt or poor print...
... end into the hole in the left end. Note Do not touch the surface of the printer. EN Printer consumables 121 3 To replace the transfer kit 1 Open the front door of the printer. 2 Push the white button on the lower (green) lever and swing the lever to the right. 3 Open the... 8 until it snaps into place. 7 Rotate the transfer belt up using the blue lever on the right side of the printer, and remove the 4 transfer drum. 4 On the right, back wall of the opening . 8 Using the blue handles, lift the belt up and out of the transfer belt or poor print...
Service Manual
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Drum kit Replace the parts in the imaging drum kit when the printer control panel displays any of drum kit 1 Two air filters 2 Hand wipe 3 Imaging drum cartridge Imaging drum life-"drum life low" and "drum life 124 Chapter 4 - Printer maintenance EN Contents of the following messages: DRUM LIFE LOW / REPLACE DRUM KIT DRUM LIFE OUT / REPLACE DRUM KIT DRUM ERROR / REPLACE DRUM KIT 3 1 2 Figure 21.
Drum kit Replace the parts in the imaging drum kit when the printer control panel displays any of drum kit 1 Two air filters 2 Hand wipe 3 Imaging drum cartridge Imaging drum life-"drum life low" and "drum life 124 Chapter 4 - Printer maintenance EN Contents of the following messages: DRUM LIFE LOW / REPLACE DRUM KIT DRUM LIFE OUT / REPLACE DRUM KIT DRUM ERROR / REPLACE DRUM KIT 3 1 2 Figure 21.
Service Manual
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... user can continue to order a replacement imaging drum kit before "drum life out." and A4-sized pages. When printing in color, the number of pages will not operate. The user should allow the user time to operate the HP Color LaserJet 8500/8550 printer until "drum life out" occurs, at which point the ...printer will be advised that the imaging drum has only about 20% of the images printed. Color printing uses four images per page even if only one...
... user can continue to order a replacement imaging drum kit before "drum life out." and A4-sized pages. When printing in color, the number of pages will not operate. The user should allow the user time to operate the HP Color LaserJet 8500/8550 printer until "drum life out" occurs, at which point the ...printer will be advised that the imaging drum has only about 20% of the images printed. Color printing uses four images per page even if only one...
Service Manual
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...block 143 Developing block 145 Transfer block 146 Transfer drum cleaning block 150 Imaging drum cleaning block 152 Fusing block 153 Consumable detection mechanisms 154 Drum kit life detection 154 Transfer kit life detection 156 Color toner lever detection 158 Black toner level detection and... cartridge detection . . 159 Environment change control 159 Color calibration density sensor 160 Transfer belt ...
...block 143 Developing block 145 Transfer block 146 Transfer drum cleaning block 150 Imaging drum cleaning block 152 Fusing block 153 Consumable detection mechanisms 154 Drum kit life detection 154 Transfer kit life detection 156 Color toner lever detection 158 Black toner level detection and... cartridge detection . . 159 Environment change control 159 Color calibration density sensor 160 Transfer belt ...
Service Manual
Page 156
...time the waste toner recovers the window. Waste toner level detection The waste toner detection unit in the controller board, DRUM ERROR / REPLACE DRUM KIT is shown on the data from the moment that the detection window is still able to print after notification occurs. ...number reaches approximately 50,000 images, the controller board stops the printer and signals DRUM LIFE OUT / REPLACE DRUM KIT. Theory of toner (cyan, magenta, yellow, or black). Drum kit life detection The imaging drum cartridge contains a memory device. The controller board writes the data into the imaging...
...time the waste toner recovers the window. Waste toner level detection The waste toner detection unit in the controller board, DRUM ERROR / REPLACE DRUM KIT is shown on the data from the moment that the detection window is still able to print after notification occurs. ...number reaches approximately 50,000 images, the controller board stops the printer and signals DRUM LIFE OUT / REPLACE DRUM KIT. Theory of toner (cyan, magenta, yellow, or black). Drum kit life detection The imaging drum cartridge contains a memory device. The controller board writes the data into the imaging...
Service Manual
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Figure 37. Note controller board stops the printer and signals DRUM LIFE OUT / REPLACE DRUM KIT. If the imaging drum cartridge memory fails, a warning will be displayed on the printer control panel. Printing can continue until the waste toner sensor indicates full. Printing cannot continue without a new imaging drum being installed. Waste toner level detection EN Consumable detection mechanisms 155
Figure 37. Note controller board stops the printer and signals DRUM LIFE OUT / REPLACE DRUM KIT. If the imaging drum cartridge memory fails, a warning will be displayed on the printer control panel. Printing can continue until the waste toner sensor indicates full. Printing cannot continue without a new imaging drum being installed. Waste toner level detection EN Consumable detection mechanisms 155
Service Manual
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.... See table 20 on the controller board. 3 Replace the drum kit. 396 Chapter 7 - Action: Replace the printer hard disk. b Press ITEM until CONFIGURATION MENU appears on the display. DRUM ERROR REPLACE DRUM KIT Event log message: None Description: The printer has detected an ...error in the imaging drum memory device. DISK FILE OPERATION FAILED Event log message: None Description: Action: The...
.... See table 20 on the controller board. 3 Replace the drum kit. 396 Chapter 7 - Action: Replace the printer hard disk. b Press ITEM until CONFIGURATION MENU appears on the display. DRUM ERROR REPLACE DRUM KIT Event log message: None Description: The printer has detected an ...error in the imaging drum memory device. DISK FILE OPERATION FAILED Event log message: None Description: Action: The...
Service Manual
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Table 42. Unnumbered printer messages (continued) DRUM LIFE LOW ORDER DRUM KIT or DRUM LIFE LOW
Table 42. Unnumbered printer messages (continued) DRUM LIFE LOW ORDER DRUM KIT or DRUM LIFE LOW
Service Manual
Page 401
...The VTU on the fuser. 3 Replace the controller board. For information about ordering a fuser kit, see page 511. 2 Reconnect connector J222 on the controller board and connector J26 on the ...has detected that the sensor PS1901C is closed. 2 Turn the printer off and on the remaining color toner sensor. Table 42. Action: Close the VTU. INSTALL Event log message: None Description: ...blue toner lever is locked. • The clear door is closed. • The imaging drum is installed. • The black toner cartridge is installed completely, including removing the orange seal...
...The VTU on the fuser. 3 Replace the controller board. For information about ordering a fuser kit, see page 511. 2 Reconnect connector J222 on the controller board and connector J26 on the ...has detected that the sensor PS1901C is closed. 2 Turn the printer off and on the remaining color toner sensor. Table 42. Action: Close the VTU. INSTALL Event log message: None Description: ...blue toner lever is locked. • The clear door is closed. • The imaging drum is installed. • The black toner cartridge is installed completely, including removing the orange seal...
Service Manual
Page 418
...installed, such as the printer control panel lock, printer control panel password, and printer hard-disk lock. For HP Color LaserJet 8550 printer models (except for the MFP model), estimates of the amount of toner remaining in each of the ... date code • PostScript version • total pages printed during the life of the printer • number of color pages printed during the life of the printer • number of black-and-white pages printed during the life of...% of life remaining-shows the percentage of the maximum rated life remaining for the transfer kit, fuser kit, and drum kit.
...installed, such as the printer control panel lock, printer control panel password, and printer hard-disk lock. For HP Color LaserJet 8550 printer models (except for the MFP model), estimates of the amount of toner remaining in each of the ... date code • PostScript version • total pages printed during the life of the printer • number of color pages printed during the life of the printer • number of black-and-white pages printed during the life of...% of life remaining-shows the percentage of the maximum rated life remaining for the transfer kit, fuser kit, and drum kit.
Service Manual
Page 515
... cable 92215N HP LocalTalk cable kit C2946A IEEE-1284 compliant parallel cable of 3 m (approximately 10 ft) with 25pin male/micro 36-pin male "C" size connector C4781-60504 C-link cable (from formatter board to the 2,000-sheet input unit) C2934A HP Color LaserJet transparencies (letter-sized), 50 sheets C2936A HP Color LaserJet transparencies (A4-sized), 50 sheets C4179A HP Color LaserJet soft...
... cable 92215N HP LocalTalk cable kit C2946A IEEE-1284 compliant parallel cable of 3 m (approximately 10 ft) with 25pin male/micro 36-pin male "C" size connector C4781-60504 C-link cable (from formatter board to the 2,000-sheet input unit) C2934A HP Color LaserJet transparencies (letter-sized), 50 sheets C2936A HP Color LaserJet transparencies (A4-sized), 50 sheets C4179A HP Color LaserJet soft...
Service Manual
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... roller Charcoal filter Hand wipe 110-volt fuser kit - Fuser Six paper rollers Hand wipe 220-volt fuser kit - Parts and diagrams EN Imaging drum Two air filters Hand wipe Transfer kit - Reference Guide (English) HP Color LaserJet 8500, 8500N, 8500 DN - Cyan toner cartridge - Service and Support CD-ROM HP Color LaserJet 8500, 8500 N, 8500 DN - Table 91. Numerical...
... roller Charcoal filter Hand wipe 110-volt fuser kit - Fuser Six paper rollers Hand wipe 220-volt fuser kit - Parts and diagrams EN Imaging drum Two air filters Hand wipe Transfer kit - Reference Guide (English) HP Color LaserJet 8500, 8500N, 8500 DN - Cyan toner cartridge - Service and Support CD-ROM HP Color LaserJet 8500, 8500 N, 8500 DN - Table 91. Numerical...
Service Manual
Page 608
... 389 transfer jams 394 transfer not installed 402 transfer problems 465 drum kit low and out messages 88 parts list 513 replace frequency 119 drum motor 171 description and illustration 173 test 96 Drum MSDS 57 drum/cartridge drive assembly illustration 518 illustration and parts list 540 removing... dithering 139 diverter for paper out of printer 25 detail color value 92 developer DSD wheels, repetitive defects 464 developer motor test 96 developer roller repetitive defects 464 developer streak print defect 453 developer/imaging drum bias supply removing 289 diagnostic LED (multi-bin mailbox) ...
... 389 transfer jams 394 transfer not installed 402 transfer problems 465 drum kit low and out messages 88 parts list 513 replace frequency 119 drum motor 171 description and illustration 173 test 96 Drum MSDS 57 drum/cartridge drive assembly illustration 518 illustration and parts list 540 removing... dithering 139 diverter for paper out of printer 25 detail color value 92 developer DSD wheels, repetitive defects 464 developer motor test 96 developer roller repetitive defects 464 developer streak print defect 453 developer/imaging drum bias supply removing 289 diagnostic LED (multi-bin mailbox) ...
Service Manual
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...141 secondary transfer 148 troubleshooting 438 images resolution 23 troubleshooting defects 441 imaging drum cartridge 136 cleaning process 152 detecting expiration 154 error 396 illustration 136 installing 124 kit 124 laser beam exposure 144 life out 397 location 118 not installed 401 preconditioning ... feed error 379 input paper guide (multi-bin mailbox) 210, 323 input trays. See print server HP LaserJet printing demonstration 83 HP Technical Training 62 HP TonerGauge 110 HPD (Hewlett-Packard Distribution) ordering information 61 humidity automatic environment change control 159 sensor 159 ...
...141 secondary transfer 148 troubleshooting 438 images resolution 23 troubleshooting defects 441 imaging drum cartridge 136 cleaning process 152 detecting expiration 154 error 396 illustration 136 installing 124 kit 124 laser beam exposure 144 life out 397 location 118 not installed 401 preconditioning ... feed error 379 input paper guide (multi-bin mailbox) 210, 323 input trays. See print server HP LaserJet printing demonstration 83 HP Technical Training 62 HP TonerGauge 110 HPD (Hewlett-Packard Distribution) ordering information 61 humidity automatic environment change control 159 sensor 159 ...
Service Manual
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...drum kit low 397 drum kit out 397 fuser and paper roller low 398 fuser and paper rollers out 398 transfer kit low 411 transfer kit out 411 life detection fuser kit 156 imaging drum 154 transfer kit... unit) 200 main relay PCA 293 maintenance black toner cartridge 100 color toner cartridges 101 consumables 98 imaging drum 99 strategy 222 user-replaceable parts 224 maintenance units. labels; tray... 2; tray 4; See multi-bin mailbox media capacities (multi-bin mailbox) 33 capacities (printer) 31 cautions for laser...
...drum kit low 397 drum kit out 397 fuser and paper roller low 398 fuser and paper rollers out 398 transfer kit low 411 transfer kit out 411 life detection fuser kit 156 imaging drum 154 transfer kit... unit) 200 main relay PCA 293 maintenance black toner cartridge 100 color toner cartridges 101 consumables 98 imaging drum 99 strategy 222 user-replaceable parts 224 maintenance units. labels; tray... 2; tray 4; See multi-bin mailbox media capacities (multi-bin mailbox) 33 capacities (printer) 31 cautions for laser...
Service Manual
Page 617
See 2,000-sheet input unit; See parts lists parts exchanging 63 HP Direct 66 ordering 61, 511 phone number identification 66 removing and installing 217 user-replaceable 224 website information 62 parts lists alphabetical 587 by part ... and doors (2,000-sheet input unit) 560 covers and doors (printer) 525 delivery assembly 553 delivery cover assembly 554 delivery drive assembly 541 DIMMs 512 drum kit 513 drum/cartridge drive assembly 540 EIO 512 EIO hard disk 512 feeder assembly 550 fixing assembly 558 formatter board 515 fuser...
See 2,000-sheet input unit; See parts lists parts exchanging 63 HP Direct 66 ordering 61, 511 phone number identification 66 removing and installing 217 user-replaceable 224 website information 62 parts lists alphabetical 587 by part ... and doors (2,000-sheet input unit) 560 covers and doors (printer) 525 delivery assembly 553 delivery cover assembly 554 delivery drive assembly 541 DIMMs 512 drum kit 513 drum/cartridge drive assembly 540 EIO 512 EIO hard disk 512 feeder assembly 550 fixing assembly 558 formatter board 515 fuser...