HP Color LaserJet 8500/8500N/8500DN user guide
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Incorrect Printer Output 144 Color Printing Problems 146 Print Quality Problems 148 Cleaning the Density Sensor 155 Troubleshooting with Print Quality Test Pages 156 Cleaning the Transfer Drum 157 Accessories, Options, and Related Products 161 Appendix A DIMM Installation Supported DIMMs 163 ...
Incorrect Printer Output 144 Color Printing Problems 146 Print Quality Problems 148 Cleaning the Density Sensor 155 Troubleshooting with Print Quality Test Pages 156 Cleaning the Transfer Drum 157 Accessories, Options, and Related Products 161 Appendix A DIMM Installation Supported DIMMs 163 ...
HP Color LaserJet 8500/8500N/8500DN user guide
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... on the display. For more information on application settings, see "Cleaning the Density Sensor" in chapter 9. • Complete the troubleshooting solutions in effect until all print jobs. Using Color EN Check with the printer driver and application settings to adjust of the printer...the printer's calibration. To adjust the color balance 1 Print the color adjust page. b Press [Item] until PRINT TEST PAGE appears on printer driver settings in the printer. Because this chapter or the online help. • Clean the density sensor in this procedure adjusts parameters within the...
... on the display. For more information on application settings, see "Cleaning the Density Sensor" in chapter 9. • Complete the troubleshooting solutions in effect until all print jobs. Using Color EN Check with the printer driver and application settings to adjust of the printer...the printer's calibration. To adjust the color balance 1 Print the color adjust page. b Press [Item] until PRINT TEST PAGE appears on printer driver settings in the printer. Because this chapter or the online help. • Clean the density sensor in this procedure adjusts parameters within the...
HP Color LaserJet 8500/8500N/8500DN user guide
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... a local authorized HP dealer or service representative for service. 54.3 DENSITY SENSOR ERROR CYCLE POWER Indicates a density sensor error, Turn the printer off and on to reset the printer. If the condition data back from tray 1. The commands cannot be seriously damaged. 58.1 ERROR CYCLE POWER Indicates that the color toner Open the color toner clear door...
... a local authorized HP dealer or service representative for service. 54.3 DENSITY SENSOR ERROR CYCLE POWER Indicates a density sensor error, Turn the printer off and on to reset the printer. If the condition data back from tray 1. The commands cannot be seriously damaged. 58.1 ERROR CYCLE POWER Indicates that the color toner Open the color toner clear door...
HP Color LaserJet 8500/8500N/8500DN user guide
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... of range or inconsistent. The turn the printer off and on cleaning the printer, see "Cleaning the Density Sensor" and "Cleaning the Transfer Drum" in the duplexer. If the condition persists, contact a local authorized HP dealer or service representative for the printer to the printer control control panel locking is not resolved, clean...
... of range or inconsistent. The turn the printer off and on cleaning the printer, see "Cleaning the Density Sensor" and "Cleaning the Transfer Drum" in the duplexer. If the condition persists, contact a local authorized HP dealer or service representative for the printer to the printer control control panel locking is not resolved, clean...
HP Color LaserJet 8500/8500N/8500DN user guide
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... listed in appendix D, "Specifications." 146 Chapter 9 - For more information, see the online help . The color density and balance are being printed. The media does not meet the specifications for your application. If the problem persists, clean the density sensor as white. For more information, see the documentation for the application. Select ColorSmart II in...
... listed in appendix D, "Specifications." 146 Chapter 9 - For more information, see the online help . The color density and balance are being printed. The media does not meet the specifications for your application. If the problem persists, clean the density sensor as white. For more information, see the documentation for the application. Select ColorSmart II in...
HP Color LaserJet 8500/8500N/8500DN user guide
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... persists, clean the density sensor as the paper type in the Paper tab in this chapter. Toner collected on replacing the imaging drum, see the online help. You recently had a media jam or the printer fed multiple sheets of a solid color) exaggerate banding. Refeeding... media contaminates the fuser, causing stray toner defects. Replace any messages. Certain halftone patterns (lighter shades of media. Try a different halftone pattern. Solving Printer Problems 151 If the problem persists, replace the imaging drum or contact a local authorized HP ...
... persists, clean the density sensor as the paper type in the Paper tab in this chapter. Toner collected on replacing the imaging drum, see the online help. You recently had a media jam or the printer fed multiple sheets of a solid color) exaggerate banding. Refeeding... media contaminates the fuser, causing stray toner defects. Replace any messages. Certain halftone patterns (lighter shades of media. Try a different halftone pattern. Solving Printer Problems 151 If the problem persists, replace the imaging drum or contact a local authorized HP ...
HP Color LaserJet 8500/8500N/8500DN user guide
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Printer 9 Problems EN Chapter 9 - Note You can also use any paper products, such as tissue or paper towels, to clean the density sensor. To prevent scratches on the sensor, do not use a hand wipe to clean the sensor. 3 Close the upper right door. To clean the density sensor 1 Open the upper right door. 2 Use the brush located next to the sensor to remove all toner particles from the sensor. Solving Printer Problems 155 Cleaning the Density Sensor Clean the density sensor after replacing the imaging drum and when printed colors are inaccurate.
Printer 9 Problems EN Chapter 9 - Note You can also use any paper products, such as tissue or paper towels, to clean the density sensor. To prevent scratches on the sensor, do not use a hand wipe to clean the sensor. 3 Close the upper right door. To clean the density sensor 1 Open the upper right door. 2 Use the brush located next to the sensor to remove all toner particles from the sensor. Solving Printer Problems 155 Cleaning the Density Sensor Clean the density sensor after replacing the imaging drum and when printed colors are inaccurate.
HP Color LaserJet 8500/8500N/8500DN user guide
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... 16 bins, selecting output 30 bins, top output 30 bins, top output, illustration 16 black and white, print color as 75 black and white, print speeds 13 black toner cartridges, illustration 102 black toner cartridges, ordering 161 black ...density sensor 155 cleaning, toner from fabric 129 cleaning, transfer drum 157 clearable warnings defaults 26 CMS 75 cold reset, message 114 cold reset, performing 37 color adjustments, verifying 40 color balance test page, printing 80 color carousel, will not rotate 139 Color Management Systems 75 Color Swatch, printing 77 Color Test Page, printing 80 color...
... 16 bins, selecting output 30 bins, top output 30 bins, top output, illustration 16 black and white, print color as 75 black and white, print speeds 13 black toner cartridges, illustration 102 black toner cartridges, ordering 161 black ...density sensor 155 cleaning, toner from fabric 129 cleaning, transfer drum 157 clearable warnings defaults 26 CMS 75 cold reset, message 114 cold reset, performing 37 color adjustments, verifying 40 color balance test page, printing 80 color carousel, will not rotate 139 Color Management Systems 75 Color Swatch, printing 77 Color Test Page, printing 80 color...
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... 26 defaults, symbol set 26 defaults, toner low response 26 defects, repeated printed 154 deleting proof and print jobs 33 demonstration page, printing 39 density sensor, cleaning 155 density settings, verifying 40 depth, printer 101 Detail Halftone Adjust page, printing 80 Detail settings 74 digital cameras, using images 78 DIMMs, EDO 163 DIMMs...
... 26 defaults, symbol set 26 defaults, toner low response 26 defects, repeated printed 154 deleting proof and print jobs 33 demonstration page, printing 39 density sensor, cleaning 155 density settings, verifying 40 depth, printer 101 Detail Halftone Adjust page, printing 80 Detail settings 74 digital cameras, using images 78 DIMMs, EDO 163 DIMMs...
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...Mac OS, downloading fonts 41 Macintosh, cables 98 Macintosh, color settings 75 Macintosh, ColorSync 75 Macintosh, downloading fonts 41 magenta toner cartridges, ordering 161 magenta toner cartridges, replace frequency 103 maintenance, density sensor 155 maintenance, making room for 101 managing, fonts 85...showing 138 Microsoft, downloading fonts to Windows 41 Microsoft, networking with HP JetDirect 100 Microsoft, supported Windows versions 14 Microsoft, supported Windows versions for HP JetDirect 97 mirrored text 94 missing colors 146 Monarch size, weights 50 motion, horizontal index 172 motion,...
...Mac OS, downloading fonts 41 Macintosh, cables 98 Macintosh, color settings 75 Macintosh, ColorSync 75 Macintosh, downloading fonts 41 magenta toner cartridges, ordering 161 magenta toner cartridges, replace frequency 103 maintenance, density sensor 155 maintenance, making room for 101 managing, fonts 85...showing 138 Microsoft, downloading fonts to Windows 41 Microsoft, networking with HP JetDirect 100 Microsoft, supported Windows versions 14 Microsoft, supported Windows versions for HP JetDirect 97 mirrored text 94 missing colors 146 Monarch size, weights 50 motion, horizontal index 172 motion,...
Service Manual
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.... Figure 66. Figure 67. Figure 69. Figure 73. Figure 74. 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...of 2 195 Timing chart, printing full-color letter-sized page (2 of 2 196 Timing chart, printing full-color 11-by-17-inch page (1 of 2 197 Timing chart, printing full-color 11-by-17 inch page (2 of 2) 198 2,000-sheet input unit sensors, switches, clutches, and motors 200 ...
.... Figure 66. Figure 67. Figure 69. Figure 73. Figure 74. 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...of 2 195 Timing chart, printing full-color letter-sized page (2 of 2 196 Timing chart, printing full-color 11-by-17-inch page (1 of 2 197 Timing chart, printing full-color 11-by-17 inch page (2 of 2) 198 2,000-sheet input unit sensors, switches, clutches, and motors 200 ...
Service Manual
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...over media size sensing PCAs 296 Figure 148. Right cover with cover removed 270 Figure 122. Density sensor 266 Figure 118. ECO board 279 Figure 131. Developer/imaging drum bias supply, HP Color LaserJet 8550 printer 288 Figure 140. Main relay PCA 293 Figure 145. Front cover of 2 268...of printer with VTU removed 304 Figure 154. Drum/cartridge drive assembly 294 Figure 146. Fan 2 275 Figure 127. Controller board, HP Color LaserJet 8500 printer . 278 Figure 130. Cleaning roller HV module 292 Figure 144. Media size sensing PCAs 297 Figure 149. Screw on the delivery...
...over media size sensing PCAs 296 Figure 148. Right cover with cover removed 270 Figure 122. Density sensor 266 Figure 118. ECO board 279 Figure 131. Developer/imaging drum bias supply, HP Color LaserJet 8550 printer 288 Figure 140. Main relay PCA 293 Figure 145. Front cover of 2 268...of printer with VTU removed 304 Figure 154. Drum/cartridge drive assembly 294 Figure 146. Fan 2 275 Figure 127. Controller board, HP Color LaserJet 8500 printer . 278 Figure 130. Cleaning roller HV module 292 Figure 144. Media size sensing PCAs 297 Figure 149. Screw on the delivery...
Service Manual
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...the inside of the door, locate the density sensor and the density sensor brush. Use the brush to clean the density sensor. Note You can also use any paper products, such as tissue or paper towels, to clean the sensor. 3 Replace the brush. 4 Close ...the right upper door. 114 Chapter 4 - To prevent scratches on the sensor, do not use a hand wipe to brush off toner particles from the density sensor and the erase lamp. Printer maintenance EN Cleaning the density sensor Clean the density sensor after replacing the imaging drum and when printed colors...
...the inside of the door, locate the density sensor and the density sensor brush. Use the brush to clean the density sensor. Note You can also use any paper products, such as tissue or paper towels, to clean the sensor. 3 Replace the brush. 4 Close ...the right upper door. 114 Chapter 4 - To prevent scratches on the sensor, do not use a hand wipe to brush off toner particles from the density sensor and the erase lamp. Printer maintenance EN Cleaning the density sensor Clean the density sensor after replacing the imaging drum and when printed colors...
Service Manual
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... to slide the new drum into place. 5 6 Close the front door and open the upper door on the top of the door, locate the density sensor and the density sensor brush. Then swing the lower (green) lever to the right. 3 3 Pull the drum partway out. 2 To replace the imaging drum and air filters... 1 Open the front door. 2 Swing the upper (blue) lever to brush toner particles from the 7 density sensor. Grasp the blue handle on the right side of the printer. 7 On the inside of the drum and remove the imaging drum.
... to slide the new drum into place. 5 6 Close the front door and open the upper door on the top of the door, locate the density sensor and the density sensor brush. Then swing the lower (green) lever to the right. 3 3 Pull the drum partway out. 2 To replace the imaging drum and air filters... 1 Open the front door. 2 Swing the upper (blue) lever to brush toner particles from the 7 density sensor. Grasp the blue handle on the right side of the printer. 7 On the inside of the drum and remove the imaging drum.
Service Manual
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5 Theory of operation Chapter contents Introduction 135 Color theory 138 Subtractive color theory 138 Additive color theory 140 Image formation 141 Electrostatic latent image formation block 143 Developing block 145 Transfer block 146 Transfer drum... 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 control 161 Cleaning roller control 162 Carousel control 162 EN ...
5 Theory of operation Chapter contents Introduction 135 Color theory 138 Subtractive color theory 138 Additive color theory 140 Image formation 141 Electrostatic latent image formation block 143 Developing block 145 Transfer block 146 Transfer drum... 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 control 161 Cleaning roller control 162 Carousel control 162 EN ...
Service Manual
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... the printer is revived from the LED, and the density detection pattern on the transfer drum during a calibration cycle. Color calibration density sensor The density sensor inside the right upper door senses the density detection pattern for more that information is changed by the environment change control The density control will only be executed if all of the...
... the printer is revived from the LED, and the density detection pattern on the transfer drum during a calibration cycle. Color calibration density sensor The density sensor inside the right upper door senses the density detection pattern for more that information is changed by the environment change control The density control will only be executed if all of the...
Service Manual
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... Face-up solenoid 258 Face-up exit assembly 260 Right assemblies 261 Tray 1 261 Pick-up roller 262 Registration roller assembly 263 Paper photo (OHT) sensors 265 Density sensor 266 Paper pick-up assembly 267 Tray 1 pick-up assembly 268 Rear assemblies 270 Formatter pan 272 Fan 1 274 Fan 2 275 Power supply 276...
... Face-up solenoid 258 Face-up exit assembly 260 Right assemblies 261 Tray 1 261 Pick-up roller 262 Registration roller assembly 263 Paper photo (OHT) sensors 265 Density sensor 266 Paper pick-up assembly 267 Tray 1 pick-up assembly 268 Rear assemblies 270 Formatter pan 272 Fan 1 274 Fan 2 275 Power supply 276...
Service Manual
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... assembly. Right assemblies Gain access to the following assemblies from the right side of the printer: tray 1 pick-up roller registration roller assembly paper photo sensors density sensor paper pick-up assembly tray 1 pick-up assembly Tray 1 Tray 1 is part of the tray out. 4 Unplug one connector on the right side (callout 1). EN...
... assembly. Right assemblies Gain access to the following assemblies from the right side of the printer: tray 1 pick-up roller registration roller assembly paper photo sensors density sensor paper pick-up assembly tray 1 pick-up assembly Tray 1 Tray 1 is part of the tray out. 4 Unplug one connector on the right side (callout 1). EN...
Service Manual
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Removal and replacement EN Density sensor The density sensor is located on the right upper door. 1 Open the right upper door. 2 With a flat screwdriver, release the six tabs on the sensor cover (callout 1). 2 12 Figure 117. Density sensor 3 Remove three screws from the sensor (callout 2). 4 Unplug one connector and remove the sensor. 266 Chapter 6 -
Removal and replacement EN Density sensor The density sensor is located on the right upper door. 1 Open the right upper door. 2 With a flat screwdriver, release the six tabs on the sensor cover (callout 1). 2 12 Figure 117. Density sensor 3 Remove three screws from the sensor (callout 2). 4 Unplug one connector and remove the sensor. 266 Chapter 6 -
Service Manual
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...on page 389. 54.00.09 (event log message) Out of range magenta. See CLEAN DENSITY SENSOR CYCLE POWER in table 42 on page 389. 54.00.07 (event log message) Out of range black. See CLEAN DENSITY SENSOR CYCLE POWER in the duplexer. Action: 1 If the input tray you are transparencies in table... is not installed and it was selected as requesting to print from the paper path. 2 Verify that the input tray is not installed. See CLEAN DENSITY SENSOR CYCLE POWER in the printer control panel. 3 Turn the printer off and on page 389. 54.00.08 (event log message) Out of range ...
...on page 389. 54.00.09 (event log message) Out of range magenta. See CLEAN DENSITY SENSOR CYCLE POWER in table 42 on page 389. 54.00.07 (event log message) Out of range black. See CLEAN DENSITY SENSOR CYCLE POWER in the duplexer. Action: 1 If the input tray you are transparencies in table... is not installed and it was selected as requesting to print from the paper path. 2 Verify that the input tray is not installed. See CLEAN DENSITY SENSOR CYCLE POWER in the printer control panel. 3 Turn the printer off and on page 389. 54.00.08 (event log message) Out of range ...