Service Manual
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... the display language 97 Installing the consumables 98 Configuring input trays 103 Verifying the printer is installed correctly 105 Verifying DIMM installation 106 Duplex registration (HP Color LaserJet 8550 107 Booklet printing 109 HP TonerGauge (HP Color LaserJet 8550 110 EN 3
... the display language 97 Installing the consumables 98 Configuring input trays 103 Verifying the printer is installed correctly 105 Verifying DIMM installation 106 Duplex registration (HP Color LaserJet 8550 107 Booklet printing 109 HP TonerGauge (HP Color LaserJet 8550 110 EN 3
Service Manual
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4 Printer maintenance Chapter contents 111 Cleaning procedures 113 Printer consumables 118 5 Theory of operation Chapter contents 133 Introduction 135 Color theory 138 Image formation 141 Consumable detection mechanisms 154 Electrical systems 164 Mechanical systems 169 Paper path 178 Printer timing 192 EPH controller board 199 ...
4 Printer maintenance Chapter contents 111 Cleaning procedures 113 Printer consumables 118 5 Theory of operation Chapter contents 133 Introduction 135 Color theory 138 Image formation 141 Consumable detection mechanisms 154 Electrical systems 164 Mechanical systems 169 Paper path 178 Printer timing 192 EPH controller board 199 ...
Service Manual
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... 363 Pre-troubleshooting checklist 367 Printer message troubleshooting 368 Aids to troubleshooting 415 Paper path troubleshooting 433 Image formation troubleshooting 438 Image defects troubleshooting 441 Color balance adjustment 457 Repetitive defects troubleshooting 462 Repetitive defects troubleshooting 463 2,000-sheet input unit troubleshooting 469 Multi-bin mailbox troubleshooting 477 3,000-sheet stapler...
... 363 Pre-troubleshooting checklist 367 Printer message troubleshooting 368 Aids to troubleshooting 415 Paper path troubleshooting 433 Image formation troubleshooting 438 Image defects troubleshooting 441 Color balance adjustment 457 Repetitive defects troubleshooting 462 Repetitive defects troubleshooting 463 2,000-sheet input unit troubleshooting 469 Multi-bin mailbox troubleshooting 477 3,000-sheet stapler...
Service Manual
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.... Figure 21. Figure 5. Figure 17. Figure 19. Figure 24. Figure 31. Figure 35. Figure 34. 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 drum cleaning 151 Imaging...
.... Figure 21. Figure 5. Figure 17. Figure 19. Figure 24. Figure 31. Figure 35. Figure 34. 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 drum cleaning 151 Imaging...
Service Manual
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...Figure 62. Figure 64. Figure 42. Figure 46. Figure 55. Figure 56. Waste toner level detection 155 Color toner level detection 157 Color toner lever detection 158 Density sensor 160 Transfer belt control 161 Cleaning roller control 162 Carousel control 163 Power distribution... circuit diagram 164 Power Save circuit diagram 165 High-voltage power supply circuit 168 Laser/scanner 170 Printer...
...Figure 62. Figure 64. Figure 42. Figure 46. Figure 55. Figure 56. Waste toner level detection 155 Color toner level detection 157 Color toner lever detection 158 Density sensor 160 Transfer belt control 161 Cleaning roller control 162 Carousel control 163 Power distribution... circuit diagram 164 Power Save circuit diagram 165 High-voltage power supply circuit 168 Laser/scanner 170 Printer...
Service Manual
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... (front 263 Figure 115. Registration roller assembly (back 264 EN List of formatter board 256 Figure 108. Figure 75. Attachment bracket, HP Color LaserJet 8550 MFP printer 227 Figure 78. Locking pins 227 Figure 79. Connector on formatter board 256 Figure 107. Screws on right cover subassembly...Feeder assembly 257 Figure 109. Pick-up solenoid (1 of 2 259 Figure 111. Stopper hinges on the right lower cover 242 Figure 95. Laser/scanner shield 247 Figure 99. Screws behind right door 232 Figure 85. Screws on the face-up solenoid (2 of 2 258 Figure 110....
... (front 263 Figure 115. Registration roller assembly (back 264 EN List of formatter board 256 Figure 108. Figure 75. Attachment bracket, HP Color LaserJet 8550 MFP printer 227 Figure 78. Locking pins 227 Figure 79. Connector on formatter board 256 Figure 107. Screws on right cover subassembly...Feeder assembly 257 Figure 109. Pick-up solenoid (1 of 2 259 Figure 111. Stopper hinges on the right lower cover 242 Figure 95. Laser/scanner shield 247 Figure 99. Screws behind right door 232 Figure 85. Screws on the face-up solenoid (2 of 2 258 Figure 110....
Service Manual
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Paper pick-up assembly (2 of Figures EN Formatter pan (left side 273 Figure 125. Controller board, HP Color LaserJet 8550 MFP printer 277 Figure 129. Developer/imaging drum bias supply, HP Color LaserJet 8550 printer 288 Figure 140. High-voltage power supply 291 Figure 143. Left cover removal 301 Figure... 122. Screw on the delivery drive assembly 286 Figure 138. Rear of the 2,000-sheet input unit 299 Figure 150. Controller board, HP Color LaserJet 8500 printer . 278 Figure 130. Main motor 281 Figure 133. Fans 1 and 2 housing assemblies 283 Figure 135. Plate over media...
Paper pick-up assembly (2 of Figures EN Formatter pan (left side 273 Figure 125. Controller board, HP Color LaserJet 8550 MFP printer 277 Figure 129. Developer/imaging drum bias supply, HP Color LaserJet 8550 printer 288 Figure 140. High-voltage power supply 291 Figure 143. Left cover removal 301 Figure... 122. Screw on the delivery drive assembly 286 Figure 138. Rear of the 2,000-sheet input unit 299 Figure 150. Controller board, HP Color LaserJet 8500 printer . 278 Figure 130. Main motor 281 Figure 133. Fans 1 and 2 housing assemblies 283 Figure 135. Plate over media...
Service Manual
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...PCA or stacker controller PCA removal 353 Figure 204. Safety switch assembly removal 357 Figure 208. Image orientation and direction of an HP Color LaserJet 8550 printer configuration page 417 Figure 214. Cleaning the transfer drum 466 Figure 236. Location of 3 350 Figure 201. Interlock ...Figure 200. Toner bubbles 446 Figure 228. Repetitive defect ruler 463 Figure 235. Rear view of 3 352 Figure 203. Laser shutters 428 Figure 220. Color adjust page 458 Figure 234. Left upper cover detection 429 Figure 221. Right upper cover detection interlock 425 Figure 215....
...PCA or stacker controller PCA removal 353 Figure 204. Safety switch assembly removal 357 Figure 208. Image orientation and direction of an HP Color LaserJet 8550 printer configuration page 417 Figure 214. Cleaning the transfer drum 466 Figure 236. Location of 3 350 Figure 201. Interlock ...Figure 200. Toner bubbles 446 Figure 228. Repetitive defect ruler 463 Figure 235. Rear view of 3 352 Figure 203. Laser shutters 428 Figure 220. Color adjust page 458 Figure 234. Left upper cover detection 429 Figure 221. Right upper cover detection interlock 425 Figure 215....
Service Manual
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... locations (2 of 4 522 Figure 252. Printer covers and doors (3 of 2 518 Figure 249. Multi-bin mailbox components (1 of 3 544 Figure 265. Error format for tray 2 (HP Color LaserJet 8550 base model only) . 519 Figure 250. Tray 3 assembly 542 Figure 263. Tray 1 pick-up assembly (1 of 3 564 Figure 281.
... locations (2 of 4 522 Figure 252. Printer covers and doors (3 of 2 518 Figure 249. Multi-bin mailbox components (1 of 3 544 Figure 265. Error format for tray 2 (HP Color LaserJet 8550 base model only) . 519 Figure 250. Tray 3 assembly 542 Figure 263. Tray 1 pick-up assembly (1 of 3 564 Figure 281.
Service Manual
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... Menu 85 Configuration Menu 88 Printing Menu 89 I/O Menu 91 I/O Menu 91 Resets Menu 92 Color Adjust Menu 92 Service Mode Menu 93 Replacement frequencies for printer consumables . . 119 Subtractive color absorption 138 Subtractive color mixing 139 Additive color mixing 140 Fusing temperatures 166 Printer motor and heater names and descriptions . . 171 Fan operation...
... Menu 85 Configuration Menu 88 Printing Menu 89 I/O Menu 91 I/O Menu 91 Resets Menu 92 Color Adjust Menu 92 Service Mode Menu 93 Replacement frequencies for printer consumables . . 119 Subtractive color absorption 138 Subtractive color mixing 139 Additive color mixing 140 Fusing temperatures 166 Printer motor and heater names and descriptions . . 171 Fan operation...
Service Manual
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... manual covers service topics for the following printers and their paper-handling optional accessories: HP Color LaserJet 8500 printer (base model) HP Color LaserJet 8500 N printer HP Color LaserJet 8500 DN printer HP Color LaserJet 8550 printer (base model) HP Color LaserJet 8550 N printer HP Color LaserJet 8550 DN printer HP Color LaserJet 8550 GN printer HP Color LaserJet 8550 MFP-print engine only Service topics for all service information related to these devices...
... manual covers service topics for the following printers and their paper-handling optional accessories: HP Color LaserJet 8500 printer (base model) HP Color LaserJet 8500 N printer HP Color LaserJet 8500 DN printer HP Color LaserJet 8550 printer (base model) HP Color LaserJet 8550 N printer HP Color LaserJet 8550 DN printer HP Color LaserJet 8550 GN printer HP Color LaserJet 8550 MFP-print engine only Service topics for all service information related to these devices...
Service Manual
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...pages per minute (ppm) black and white (b/w) 6 ppm color Text and graphics resolution 600 dots per inch (dpi) resolution Approximate print speeds Letter and A4-size 24 ppm b/w; 6 ppm color Legal, Executive, and 11-by-17 inch size Heavy paper Transparencies ...Fonts Printer personality support User interface and EIO 12 ppm b/w; 3 ppm color 3.2 ppm b/w; 2.2 ppm color 2.6 ppm b/w; 2.0 ppm color TrueType™ rasterizer in both HP PCL and Adobe PostScript® 45 scalable HP typefaces 136 scalable Adobe PostScript fonts Automatic personality switching PCL and ...
...pages per minute (ppm) black and white (b/w) 6 ppm color Text and graphics resolution 600 dots per inch (dpi) resolution Approximate print speeds Letter and A4-size 24 ppm b/w; 6 ppm color Legal, Executive, and 11-by-17 inch size Heavy paper Transparencies ...Fonts Printer personality support User interface and EIO 12 ppm b/w; 3 ppm color 3.2 ppm b/w; 2.2 ppm color 2.6 ppm b/w; 2.0 ppm color TrueType™ rasterizer in both HP PCL and Adobe PostScript® 45 scalable HP typefaces 136 scalable Adobe PostScript fonts Automatic personality switching PCL and ...
Service Manual
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... Altitude Allowed 0 to 3,048 meters (0 to 10,000 feet) 0 to 3,048 meters (0 to 10,000 feet) Note See the HP Color LaserJet 8550 MFP printer service manual for typical product 110-volt models 100 to 127 V (+/- 10%) 50/60 Hz (+/- 2 Hz) 750 ...Specifications Electrical specifications Table 3. Product information EN Electrical specifications Item Power requirements Power consumption (typical): During printing (b/w) During printing (color) During standby During Power Save mode During Off mode Minimum recommended circuit capacity for dimensions that include copy module, automatic document ...
... Altitude Allowed 0 to 3,048 meters (0 to 10,000 feet) 0 to 3,048 meters (0 to 10,000 feet) Note See the HP Color LaserJet 8550 MFP printer service manual for typical product 110-volt models 100 to 127 V (+/- 10%) 50/60 Hz (+/- 2 Hz) 750 ...Specifications Electrical specifications Table 3. Product information EN Electrical specifications Item Power requirements Power consumption (typical): During printing (b/w) During printing (color) During standby During Power Save mode During Off mode Minimum recommended circuit capacity for dimensions that include copy module, automatic document ...
Service Manual
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Product information EN Note Space requirements See the HP Color LaserJet 8550 MFP printer service manual for space requirements for the copy module, automatic document feeder, and 1,000-sheet input paper deck. 290 mm 11 in ...
Product information EN Note Space requirements See the HP Color LaserJet 8550 MFP printer service manual for space requirements for the copy module, automatic document feeder, and 1,000-sheet input paper deck. 290 mm 11 in ...
Service Manual
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... Legal (landscape) 100 sheets of 20 lb (75 g/m2) bond Limit to media-fill mark on the media width guides. For best results, use HP LaserJet paper or conventional white copier paper. Media capacity and sizes for input trays The following table lists the types and sizes of the.... Media capacity and sizes for input trays Tray Media type Media size and orientation Media weight Maximum capacity Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Card stock Heavy (more than 28 lb, 105 g/m2) Glossy 11 by 17 inch (portrait) 16 to 58 lb JIS B4 (portrait) A3 (...
... Legal (landscape) 100 sheets of 20 lb (75 g/m2) bond Limit to media-fill mark on the media width guides. For best results, use HP LaserJet paper or conventional white copier paper. Media capacity and sizes for input trays The following table lists the types and sizes of the.... Media capacity and sizes for input trays Tray Media type Media size and orientation Media weight Maximum capacity Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Card stock Heavy (more than 28 lb, 105 g/m2) Glossy 11 by 17 inch (portrait) 16 to 58 lb JIS B4 (portrait) A3 (...
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... for input trays (continued) Tray 3 Tray 2 Tray Media type Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Glossy Transparency Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Glossy Transparency Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Glossy Media size and orientation A4 (landscape) JIS B4 (portrait) Letter (landscape) Legal (portrait) Media weight... mm) thick 16 to 28 lb (60 to 105 g/m2) bond Limit to media-fill mark on the media width guides. 500 sheets of the HP CLJ 8500 or 8550 models. 32 Chapter 1 -
... for input trays (continued) Tray 3 Tray 2 Tray Media type Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Glossy Transparency Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Glossy Transparency Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Glossy Media size and orientation A4 (landscape) JIS B4 (portrait) Letter (landscape) Legal (portrait) Media weight... mm) thick 16 to 28 lb (60 to 105 g/m2) bond Limit to media-fill mark on the media width guides. 500 sheets of the HP CLJ 8500 or 8550 models. 32 Chapter 1 -
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...bin mailbox Bins Media type Media size Media weight Maximum capacity Mailboxes Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color 11 by 17 in A3* A4 JIS B4 Legal Letter 16 to 28 lb 250 sheets of 20 ...(60 to 105 g/m2) bond (75 g/m2) bond Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Card Stock Heavy (more than 28 lb, 105 g/m2) Glossy 11 by 17 in A3* 16 to 58... lb 125 sheets of the HP CLJ 8500 or 8550 models. Letter Transparency A4 Letter 5 mils (0.13 mm) thick - Table 9. Envelopes B5 C5...
...bin mailbox Bins Media type Media size Media weight Maximum capacity Mailboxes Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color 11 by 17 in A3* A4 JIS B4 Legal Letter 16 to 28 lb 250 sheets of 20 ...(60 to 105 g/m2) bond (75 g/m2) bond Paper Plain Preprinted Letterhead Prepunched Bond Recycled Color Card Stock Heavy (more than 28 lb, 105 g/m2) Glossy 11 by 17 in A3* 16 to 58... lb 125 sheets of the HP CLJ 8500 or 8550 models. Letter Transparency A4 Letter 5 mils (0.13 mm) thick - Table 9. Envelopes B5 C5...
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...28 lb (105 g/m2) bond. Transparencies The default output for all transparencies is the top output bin for all HP Color LaserJet 8550 printer models. The printer's internal color settings are supported in the printer driver has been optimized for the best print adhesion for most envelopes. The Heavy... 190° C or 374° F). Handle transparencies by the edges. Media considerations Note Not all media types are optimized for the best color quality if Transparency is low. Use the left (face-up to prevent curling. The duplexer accepts up ) output bin to prevent burns. CAUTION...
...28 lb (105 g/m2) bond. Transparencies The default output for all transparencies is the top output bin for all HP Color LaserJet 8550 printer models. The printer's internal color settings are supported in the printer driver has been optimized for the best print adhesion for most envelopes. The Heavy... 190° C or 374° F). Handle transparencies by the edges. Media considerations Note Not all media types are optimized for the best color quality if Transparency is low. Use the left (face-up to prevent curling. The duplexer accepts up ) output bin to prevent burns. CAUTION...
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...the media. The printer cannot detect the color of media you want the effect of the printed colors. 36 Chapter 1 - Colored media Colored media should be able to ensure the correct finish on which a colored coating was added after production. Pigments used ...must be of the media can result. Varying the shade or color of the same high quality as the paper type on the paper tab to withstand the printer's...driver, select Heavy Paper or Cardstock as white xerographic paper. Do not use only HP LaserJet soft gloss media in this printer.
...the media. The printer cannot detect the color of media you want the effect of the printed colors. 36 Chapter 1 - Colored media Colored media should be able to ensure the correct finish on which a colored coating was added after production. Pigments used ...must be of the media can result. Varying the shade or color of the same high quality as the paper type on the paper tab to withstand the printer's...driver, select Heavy Paper or Cardstock as white xerographic paper. Do not use only HP LaserJet soft gloss media in this printer.
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Product information EN Identification (model and serial numbers) To identify the model number and serial number, find the label located on the rear of the printer, similar to the one shown in figure 2 (the example shown is from an HP Color LaserJet 8500 printer). (serial #) Figure 2. (model #) Example of printer model number and serial number label (110 V and 220 V) 38 Chapter 1 -
Product information EN Identification (model and serial numbers) To identify the model number and serial number, find the label located on the rear of the printer, similar to the one shown in figure 2 (the example shown is from an HP Color LaserJet 8500 printer). (serial #) Figure 2. (model #) Example of printer model number and serial number label (110 V and 220 V) 38 Chapter 1 -