HP CLJ 8500, CLJ8550 Service Manual

4 (1)

HP Color LaserJet 8500,

8500 N, 8500 DN Printer

Service Manual

Company

Part number C3983-90954

First edition, October 1998

Printed in USA

Warranty

The information contained in this document is subject to change without notice.

Hewlett-Packard makes no warranty of any kind with respect to this information. HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Hewlett-Packard shall not be liable for any direct, indirect, incidental, consequential, or other damage alleged in connection with the furnishing or use of this information.

NOTICE TO U.S. GOVERNMENT USERS: RESTRICTED RIGHTS COMMERCIAL COMPUTER SOFTWARE: “Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1)(ii) of the Rights in Technical Data Clause at DFARS 52.227-7013.

Trademark Credits

CompuServe™ is a U.S. trademark of CompuServe, Inc.

MS-DOS®is a U.S. registered trademark of Microsoft Corporation.

Photoshop™ and PostScript ® are registered trademarks of Adobe Systems Incorporated.

TrueType™ is a U.S. trademark of Apple Computer, Inc.

UNIX®is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Limited.

Safety Information

WARNING

Electrical Shock Hazard

To avoid electrical shock, use only supplied power cords and connect only to properly grounded (3-hole) wall outlets.

Hewlett-Packard Company

11311 Chinden Boulevard

Boise, Idaho 83714 USA

Contents

List of figures

List of tables

1 Product information

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Media requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Identification (model and serial numbers) . . . . . . . . . . . . . . . . . . .34 Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2 Service approach

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 Parts and supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 Technical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

3 Operational overview

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 Verifying package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 Verifying the cables are installed. . . . . . . . . . . . . . . . . . . . . . . . . .60 Connecting the printer to the network . . . . . . . . . . . . . . . . . . . . . .62 Changing the printer control panel overlay . . . . . . . . . . . . . . . . . .65 Printer control panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66 Menu maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68 Selecting the display language . . . . . . . . . . . . . . . . . . . . . . . . . . .84 Installing the consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 Configuring input trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90 Verifying the printer is installed correctly. . . . . . . . . . . . . . . . . . . .92 Verifying DIMM installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93 Paper handling accessory status LEDs. . . . . . . . . . . . . . . . . . . . .94

EN	Contents 3

4 Printer maintenance

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97 Cleaning procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99 Printer consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104 Installing consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

5 Theory of operation

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 Color theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126 Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129 Consumable detection mechanisms . . . . . . . . . . . . . . . . . . . . . .142 Electrical systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152 Mechanical systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157 Paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .166 EPH controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180 2,000-sheet input unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180 Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186 Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192 Printer timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192

6 Removal and replacement

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203 Maintenance units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205 Doors and covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206 Top assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .223 Front assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227 Left assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229 Right assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237 Rear assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246 2,000-sheet input unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271 Multi-bin mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

4 Contents

7 Troubleshooting

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311 Pre-troubleshooting checklist . . . . . . . . . . . . . . . . . . . . . . . . . . .315 Printer message troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . .316 Aids to troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .361 Paper path troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .378 Image formation troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . .383 Image defects troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .386 Color balance adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .414 Repetitive defects troubleshooting . . . . . . . . . . . . . . . . . . . . . . .419 2,000-sheet input unit troubleshooting . . . . . . . . . . . . . . . . . . . .426 Multi-bin mailbox troubleshooting . . . . . . . . . . . . . . . . . . . . . . . .434 Communications troubleshooting . . . . . . . . . . . . . . . . . . . . . . . .439 Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .440

8 Parts and diagrams

Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .443 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .445 Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .445 Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .449 Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .502 Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .513

Index

EN	Contents 5

6 Contents

List of figures

Figure 1.	Space requirements . . . . . . . . . . . . . . . . . . . . . . .	. 25
Figure 2.	Example of printer model number and serial
	number label (110 V and 220 V) . . . . . . . . . . . . . .	. 34
Figure 3.	Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 35
Figure 4.	Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 36
Figure 5.	Formatter assemblies . . . . . . . . . . . . . . . . . . . . . .	. 37
Figure 6.	Paper handling accessories and options . . . . . . . .	. 38
Figure 7.	Contents of printer box . . . . . . . . . . . . . . . . . . . . .	. 59
Figure 8.	Power cord connection . . . . . . . . . . . . . . . . . . . . .	. 60
Figure 9.	C-link and power cables connections . . . . . . . . . .	. 61
Figure 10.	Network connections . . . . . . . . . . . . . . . . . . . . . . .	. 62
Figure 11.	Parallel cable connection . . . . . . . . . . . . . . . . . . . .	. 64
Figure 12.	Changing the printer control panel overlay . . . . . .	. 65
Figure 13.	Location of printer control panel features . . . . . . .	. 66
Figure 14.	Consumable installation order . . . . . . . . . . . . . . . .	. 85
Figure 15.	DIMM slot configuration . . . . . . . . . . . . . . . . . . . . .	. 93
Figure 16.	Paper handling accessory status LEDs . . . . . . . . .	. 94
Figure 17.	Cleaning the post charger unit . . . . . . . . . . . . . . . .	. 99
Figure 18.	Cleaning the density sensor . . . . . . . . . . . . . . . . .	100
Figure 19.	Cleaning the transfer charger . . . . . . . . . . . . . . . .	101
Figure 20.	Removing the waste toner tray cover . . . . . . . . . .	102
Figure 21.	Cleaning the waste toner tray . . . . . . . . . . . . . . . .	103
Figure 22.	Location of consumables in printer . . . . . . . . . . . .	104
Figure 23.	Contents of transfer kit . . . . . . . . . . . . . . . . . . . . .	106
Figure 24.	Contents of drum kit . . . . . . . . . . . . . . . . . . . . . . .	110
Figure 25.	Contents of fuser kit . . . . . . . . . . . . . . . . . . . . . . . .	113
Figure 26.	Cross-section view of internal components . . . . . .	124
Figure 27.	Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . .	129
Figure 28.	Electrostatic latent image formation block . . . . . . .	130
Figure 29.	Preconditioning exposure . . . . . . . . . . . . . . . . . . .	131
Figure 30.	Primary charging of imaging drum . . . . . . . . . . . . .	132
Figure 31.	Black toner cartridge (left) and color toner cartridge
	(right) development . . . . . . . . . . . . . . . . . . . . . . . .	133
Figure 32.	Primary transfer . . . . . . . . . . . . . . . . . . . . . . . . . . .	134
Figure 33.	Post charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	135
Figure 34.	Secondary transfer . . . . . . . . . . . . . . . . . . . . . . . .	136
Figure 35.	Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	137
Figure 36.	Cleaning roller charging . . . . . . . . . . . . . . . . . . . . .	138

EN	List of figures 7

Figure 37. Transfer drum cleaning . . . . . . . . . . . . . . . . . . . . . 139 Figure 38. Imaging drum cleaning block . . . . . . . . . . . . . . . . . 140 Figure 39. Fusing the toner . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Figure 40. Waste toner level detection . . . . . . . . . . . . . . . . . . 143 Figure 41. Color toner level detections . . . . . . . . . . . . . . . . . . 145 Figure 42. Color toner lever detection . . . . . . . . . . . . . . . . . . 146 Figure 43. Density sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Figure 44. Transfer belt control . . . . . . . . . . . . . . . . . . . . . . . . 149 Figure 45. Cleaning roller control . . . . . . . . . . . . . . . . . . . . . . 150 Figure 46. Carousel control . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Figure 47. Power distribution circuit diagram . . . . . . . . . . . . . 152 Figure 48. Power Save circuit diagram . . . . . . . . . . . . . . . . . . 153 Figure 49. High-voltage power supply circuit . . . . . . . . . . . . . 156 Figure 50. Laser/scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Figure 51. Printer motors and heaters . . . . . . . . . . . . . . . . . . 159 Figure 52. Carousel motor (M1) . . . . . . . . . . . . . . . . . . . . . . . 160 Figure 53. Drum motor (M2) . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Figure 54. Cartridge motor (M3) . . . . . . . . . . . . . . . . . . . . . . . 162 Figure 55. Main motor (M4) . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Figure 56. Pick-up motor (M5) . . . . . . . . . . . . . . . . . . . . . . . . 164 Figure 57. Paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Figure 58. Tray 2 and 3 pick-up . . . . . . . . . . . . . . . . . . . . . . . 169 Figure 59. Tray 1 pick-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Figure 60. Printer sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Figure 61. Printer switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Figure 62. Printer clutches and solenoids . . . . . . . . . . . . . . . . 177 Figure 63. Fusing and delivery unit . . . . . . . . . . . . . . . . . . . . . 179 Figure 64. 2,000-sheet input unit sensors, switches, clutches,

and motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Figure 65. 2,000-sheet input unit paper path . . . . . . . . . . . . . 185 Figure 66. Multi-bin mailbox cabling . . . . . . . . . . . . . . . . . . . . 188 Figure 67. Multi-bin mailbox sensors . . . . . . . . . . . . . . . . . . . 189 Figure 68. Multi-bin mailbox paper path . . . . . . . . . . . . . . . . . 191 Figure 69. Timing chart for WAIT period (1 of 2) . . . . . . . . . . 193 Figure 70. Timing chart for WAIT period (2 of 2) . . . . . . . . . . 194 Figure 71. Timing chart for printing full color letter-sized

page (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Figure 72. Timing chart for printing full color letter-sized

page (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 Figure 73. Timing chart for printing full color 11-by-17-inch sized

page (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Figure 74. Timing chart for printing full color 11-by-17 inch sized

page (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

8 List of figures

Figure 75.	Orientation of printer and accessories: top, front,
	and right . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 206
Figure 76.	Orientation of printer and accessories: rear
	and left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 207
Figure 77.	Removing the front cover . . . . . . . . . . . . . . .	. . . . 208
Figure 78.	Front right cover . . . . . . . . . . . . . . . . . . . . . .	. . . . 209
Figure 79.	Inside left panel . . . . . . . . . . . . . . . . . . . . . . . .	. . . 210
Figure 80.	Screws behind left door . . . . . . . . . . . . . . . . . .	. . . 211
Figure 81.	Screws behind right door . . . . . . . . . . . . . . . . .	. . . 212
Figure 82.	Connector on top cover . . . . . . . . . . . . . . . . . .	. . . 212
Figure 83.	Left door and strap . . . . . . . . . . . . . . . . . . . . .	. . . 213
Figure 84.	Screws on left rear cover . . . . . . . . . . . . . . . . .	. . . 214
Figure 85.	Screws on upper left door . . . . . . . . . . . . . . . .	. . . 215
Figure 86.	Stopper hinges on lower left cover . . . . . . . . .	. . . 216
Figure 87.	Connectors on the right upper door . . . . . . . . .	. . . 217
Figure 88.	E-ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 218
Figure 89.	Spring on right cover subassembly . . . . . . . . .	. . . 219
Figure 90.	Right rear cover . . . . . . . . . . . . . . . . . . . . . . . .	. . . 220
Figure 91.	Screws on the right lower cover . . . . . . . . . . .	. . . 221
Figure 92.	Rear cover . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 222
Figure 93.	Bottom of the control panel . . . . . . . . . . . . . . .	. . . 223
Figure 94.	Scanner unit . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 224
Figure 95.	Upper airflow vent . . . . . . . . . . . . . . . . . . . . . .	. . . 225
Figure 96.	Face-down exit sensor rail . . . . . . . . . . . . . . . .	. . . 225
Figure 97.	Face-down output assembly . . . . . . . . . . . . . .	. . . 226
Figure 98.	Toner lock sensor and color cartridge sensor	. . . . 227
Figure 99.	Subrelay PCA . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 228
Figure 100.	Formatter board . . . . . . . . . . . . . . . . . . . . . . . .	. . . 230
Figure 101.	Connector on formatter board . . . . . . . . . . . . .	. . . 232
Figure 102.	Back side of formatter board . . . . . . . . . . . . . .	. . . 232
Figure 103.	Feeder assembly . . . . . . . . . . . . . . . . . . . . . . .	. . . 233
Figure 104.	Face-up solenoid . . . . . . . . . . . . . . . . . . . . . . .	. . . 234
Figure 105.	Face-up solenoid . . . . . . . . . . . . . . . . . . . . . . .	. . . 235
Figure 106.	Screws on the face-up exit assembly . . . . . . .	. . . 236
Figure 107.	Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 237
Figure 108.	Pick-up roller . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 238
Figure 109.	Registration roller assembly (front) . . . . . . . . .	. . . 239
Figure 110.	Registration roller assembly (back) . . . . . . . . .	. . . 240
Figure 111.	Connectors on registration roller assembly . . .	. . . 241
Figure 112.	Density sensor . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 242
Figure 113.	Paper pick-up assembly . . . . . . . . . . . . . . . . .	. . . 243
Figure 114.	Paper pick-up assembly . . . . . . . . . . . . . . . . .	. . . 244
Figure 115.	Paper pick-up assembly . . . . . . . . . . . . . . . . .	. . . 245
EN	List of figures 9

Figure 116. Rear of printer with cover removed . . . . . . . . . . . . 246 Figure 117. Rear of printer with formatter pan removed . . . . . . 247 Figure 118. Formatter pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248 Figure 119. Formatter pan (left side) . . . . . . . . . . . . . . . . . . . . 249 Figure 120. Fan 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 Figure 121. Fan 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 Figure 122. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252 Figure 123. Controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Figure 124. Cartridge motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 Figure 125. Main motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 Figure 126. Carousel motor PCA . . . . . . . . . . . . . . . . . . . . . . . 256 Figure 127. Fans 1 and 2 housing assemblies . . . . . . . . . . . . . 257 Figure 128. Carousel motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 Figure 129. Lower air duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 Figure 130. Screws on the delivery drive assembly . . . . . . . . . 260 Figure 131. Access to main gear assembly . . . . . . . . . . . . . . . 261 Figure 132. High-voltage converter 1 PCA . . . . . . . . . . . . . . . . 262 Figure 133. High-voltage converter 1 . . . . . . . . . . . . . . . . . . . . 263 Figure 134. High-voltage converter 2 PCA . . . . . . . . . . . . . . . . 264 Figure 135. High-voltage converter 2 . . . . . . . . . . . . . . . . . . . . 265 Figure 136. High-voltage converter 2 . . . . . . . . . . . . . . . . . . . . 266 Figure 137. Drum/cartridge drive assembly . . . . . . . . . . . . . . . 267 Figure 138. Separation discharge high-voltage converter . . . . 268 Figure 139. Plate over media size sensing PCAs . . . . . . . . . . . 269 Figure 140. Media size sensing PCAs . . . . . . . . . . . . . . . . . . . 270 Figure 141. Front cover of the 2,000-sheet input unit . . . . . . . . 272 Figure 142. Back cover removal . . . . . . . . . . . . . . . . . . . . . . . . 273 Figure 143. Left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . 274 Figure 144. Vertical transfer unit (VTU) . . . . . . . . . . . . . . . . . . 275 Figure 145. Right cover with VTU removed . . . . . . . . . . . . . . . 276 Figure 146. Tray 4 removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Figure 147. Paper pick-up assembly . . . . . . . . . . . . . . . . . . . . 278 Figure 148. Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Figure 149. Screw on front LED PCA assembly . . . . . . . . . . . . 280 Figure 150. Front LED PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 Figure 151. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 Figure 152. Main drive assembly . . . . . . . . . . . . . . . . . . . . . . . 282 Figure 153. Paper quantity switch assembly . . . . . . . . . . . . . . 283 Figure 154. Paper size switch assembly . . . . . . . . . . . . . . . . . 284 Figure 155. Tension springs . . . . . . . . . . . . . . . . . . . . . . . . . . . 285 Figure 156. Front and back covers . . . . . . . . . . . . . . . . . . . . . . 287 Figure 157. Top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Figure 158. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Figure 159. Paper bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290

10 List of figures

Figure 160.	Flipper assembly (1 of 3) . . . . . . . . . . . . . . . . .	. . . 291
Figure 161.	Flipper assembly (2 of 3) . . . . . . . . . . . . . . . . . .	. . 292
Figure 162.	Flipper assembly (3 of 3) . . . . . . . . . . . . . . . . . .	. . 292
Figure 163.	Delivery head motor . . . . . . . . . . . . . . . . . . . . .	. . 293
Figure 164.	Transport belt motor . . . . . . . . . . . . . . . . . . . . .	. . 294
Figure 165.	Input paper guide (1 of 2) . . . . . . . . . . . . . . . . .	. . 295
Figure 166.	Input paper guide (2 of 2) . . . . . . . . . . . . . . . . .	. . 296
Figure 167.	Metallic tape and housing assembly (1 of 2) . . .	. . 297
Figure 168.	Metallic tape and housing assembly (2 of 2) . . .	. . 298
Figure 169.	Controller PCA (1 of 2) . . . . . . . . . . . . . . . . . . .	. . 299
Figure 170.	Controller PCA (2 of 2) . . . . . . . . . . . . . . . . . . .	. . 300
Figure 171.	Anti-curl strings (1 of 2) . . . . . . . . . . . . . . . . . . .	. . 301
Figure 172.	Anti-curl strings (2 of 2) . . . . . . . . . . . . . . . . . . .	. . 302
Figure 173.	Delivery head assembly (1 of 4) . . . . . . . . . . . .	. . 303
Figure 174.	Delivery head assembly (2 of 4) . . . . . . . . . . . .	. . 304
Figure 175.	Delivery head assembly (3 of 4) . . . . . . . . . . . .	. . 304
Figure 176.	Delivery head assembly (4 of 4) . . . . . . . . . . . .	. . 305
Figure 177.	Interlock switch . . . . . . . . . . . . . . . . . . . . . . . . .	. . 306
Figure 178.	Diagnostic LED PCA . . . . . . . . . . . . . . . . . . . . .	. . 307
Figure 179.	User status LED PCA . . . . . . . . . . . . . . . . . . . .	. . 308
Figure 180.	Attachment assembly . . . . . . . . . . . . . . . . . . . .	. . 309
Figure 181.	Example of a configuration page . . . . . . . . . . . .	. . 362
Figure 182.	Right upper cover detection interlock . . . . . . . .	. . 370
Figure 183.	Drum cartridge detection interlock . . . . . . . . . . .	. . 370
Figure 184.	Black toner cartridge detection interlock . . . . . .	. . 371
Figure 185.	Toner carousel door detection interlock . . . . . .	. . 371
Figure 186.	Front cover/delivery cover detection interlocks	. . . 372
Figure 187.	Laser shutters . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 373
Figure 188.	Left upper cover detection . . . . . . . . . . . . . . . . .	. . 374
Figure 189.	Right lower cover detection . . . . . . . . . . . . . . . .	. . 374
Figure 190.	Printer paper path . . . . . . . . . . . . . . . . . . . . . . .	. . 380
Figure 191.	Image orientation and direction of travel . . . . . .	. . 386
Figure 192.	Incorrect registration (late and early print) . . . . .	. . 388
Figure 193.	Image skew . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 389
Figure 194.	Blank or partially blank page . . . . . . . . . . . . . . .	. . 390
Figure 195.	Horizontal lines (in one color) . . . . . . . . . . . . . .	. . 391
Figure 196.	Horizontal lines (in all colors, CMYK) . . . . . . . .	. . 392
Figure 197.	Rain or speckled print . . . . . . . . . . . . . . . . . . . .	. . 393
Figure 198.	Black, brown, or orange bands . . . . . . . . . . . . .	. . 394
Figure 199.	Background toner scatter . . . . . . . . . . . . . . . . .	. . 395
Figure 200.	Mottled process colors or poor transfer . . . . . . .	. . 396
Figure 201.	Stray toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 397
Figure 202.	Dark yellow or contaminated print . . . . . . . . . . .	. . 398
Figure 203.	Color adjust page . . . . . . . . . . . . . . . . . . . . . . .	. . 415
EN	List of figures 11

Figure 204. Repetitive defect ruler . . . . . . . . . . . . . . . . . . . . . . 420 Figure 205. Cleaning the transfer drum . . . . . . . . . . . . . . . . . . 423 Figure 206. Rear view of 2,000-sheet input unit . . . . . . . . . . . . 428 Figure 207. Location of sensors in the 2,000-sheet input unit . 432 Figure 208. Multi-bin mailbox power supply test mode switch . 434 Figure 209. Connectors on the controller board . . . . . . . . . . . . 440 Figure 210. General printer circuit diagram (1 of 2) . . . . . . . . . 441 Figure 211. General printer circuit diagram (2 of 2) . . . . . . . . . 442 Figure 212. Major assembly locations (1 of 2) . . . . . . . . . . . . . 450 Figure 213. Major assembly locations (2 of 2) . . . . . . . . . . . . . 451 Figure 214. Printer covers and doors (1 of 3) . . . . . . . . . . . . . . 452 Figure 215. Printer covers and doors (2 of 3) . . . . . . . . . . . . . . 454 Figure 216. Printer covers and doors (3 of 3) . . . . . . . . . . . . . . 456 Figure 217. Internal cover assembly . . . . . . . . . . . . . . . . . . . . . 458 Figure 218. Internal components (1 of 6) . . . . . . . . . . . . . . . . . 460 Figure 219. Internal components (2 of 6) . . . . . . . . . . . . . . . . . 462 Figure 220. Internal components (3 of 6) . . . . . . . . . . . . . . . . . 464 Figure 221. Internal components (4 of 6) . . . . . . . . . . . . . . . . . 466 Figure 222. Internal components (5 of 6) . . . . . . . . . . . . . . . . . 468 Figure 223. Internal components (6 of 6) . . . . . . . . . . . . . . . . . 470 Figure 224. Drum/cartridge drive assembly . . . . . . . . . . . . . . . 472 Figure 225. Delivery drive assembly . . . . . . . . . . . . . . . . . . . . . 473 Figure 226. Tray 3 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 474 Figure 227. Tray 2 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 475 Figure 228. Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . 476 Figure 229. Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . 477 Figure 230. Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . 478 Figure 231. Registration frame assembly . . . . . . . . . . . . . . . . . 480 Figure 232. Registration roller assembly . . . . . . . . . . . . . . . . . 481 Figure 233. Feeder assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 482 Figure 234. Tray 1 pick-up assembly . . . . . . . . . . . . . . . . . . . . 483 Figure 235. Tray 1 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 484 Figure 236. Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . 485 Figure 237. Delivery cover assembly . . . . . . . . . . . . . . . . . . . . 486 Figure 238. Transfer belt assembly . . . . . . . . . . . . . . . . . . . . . 487 Figure 239. Fuser assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . 488 Figure 240. Fuser assembly (2 of 2) . . . . . . . . . . . . . . . . . . . . . 489 Figure 241. PCA assembly location diagram . . . . . . . . . . . . . . 491 Figure 242. 2,000-sheet input unit covers and doors . . . . . . . . 492 Figure 243. 2,000-sheet input unit internal components . . . . . . 494 Figure 244. Multi-bin mailbox components (1 of 3) . . . . . . . . . . 496 Figure 245. Multi-bin mailbox components (2 of 3) . . . . . . . . . . 498 Figure 246. Multi-bin mailbox components (3 of 3) . . . . . . . . . . 500

12 List of figures

List of tables

Table 1. Features and optional accessories by printer model. . 19 Table 2. Printer performance . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 3. Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 21 Table 4. Operating environment specifications . . . . . . . . . . . . . 21 Table 5. Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 6. Printer dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 7. Consumable storage specifications . . . . . . . . . . . . . . 23 Table 8. Media capacity and sizes for input trays . . . . . . . . . . . 28 Table 9. Media capacity and sizes for the multi-bin mailbox. . . 30 Table 10. Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Table 11. Technical support websites. . . . . . . . . . . . . . . . . . . . . 50 Table 12. Printer control panel menu map overview. . . . . . . . . . 69 Table 13. Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Table 14. Proof and Print Menu . . . . . . . . . . . . . . . . . . . . . . . . . 72 Table 15. Paper Handling Menu . . . . . . . . . . . . . . . . . . . . . . . . . 72 Table 16. Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Table 17. Printing Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Table 18. I/O Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Table 19. Resets Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Table 20. Color Adjust Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Table 21. Service Mode Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Table 22. Paper handling accessory status LEDs . . . . . . . . . . . 95 Table 23. Replacement frequencies for printer consumables. . 105 Table 24. Subtractive color absorption . . . . . . . . . . . . . . . . . . . 126 Table 25. Subtractive color mixing . . . . . . . . . . . . . . . . . . . . . . 127 Table 26. Additive color mixing . . . . . . . . . . . . . . . . . . . . . . . . . 128 Table 27. Fusing temperatures . . . . . . . . . . . . . . . . . . . . . . . . . 154 Table 28. Printer motor and heater names and descriptions . . 159 Table 29. Fan operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Table 30. Feed speeds based on media type . . . . . . . . . . . . . . 167 Table 31. Printer sensor names and descriptions. . . . . . . . . . . 173 Table 32. Printer switch names and descriptions . . . . . . . . . . . 175 Table 33. Tray 2 and Tray 3 paper size detection. . . . . . . . . . . 176 Table 34. Printer clutch and solenoid names and descriptions. 177 Table 35. 2,000-sheet input unit sensors, switches, clutches,

and motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Table 36. Paper quantity detection switches. . . . . . . . . . . . . . . 183 Table 37. Paper size detection switches. . . . . . . . . . . . . . . . . . 183

EN	List of tables 13

Table 38. Multi-bin mailbox sensors, switches, motors, and
	controller board PCA. . . . . . . . . . . . . . . . . . . . . . . . .	190
Table 39. Numbered printer messages. . . . . . . . . . . . . . . . . . .		316
Table 40. Unnumbered printer messages. . . . . . . . . . . . . . . . .		334
Table 41. Sensor monitor test . . . . . . . . . . . . . . . . . . . . . . . . . .		369
Table 42. Media jam detection . . . . . . . . . . . . . . . . . . . . . . . . .		381
Table 43.	Streaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	401
Table 44. Neutral axis adjustments. . . . . . . . . . . . . . . . . . . . . .		418
Table 45. Status LED on the 2,000-sheet input unit . . . . . . . . .		427
Table 46. Patterns of LED flashing (2-second pause between
	each pattern) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	429
Table 47. DIP switch settings for troubleshooting test
	procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	430
Table 48. Status LEDs on the multi-bin mailbox . . . . . . . . . . . .		436
Table 49. Options, accessories, and consumables. . . . . . . . . .		446
Table 50.	Miscellaneous parts . . . . . . . . . . . . . . . . . . . . . . . . .	448
Table 51. Printer doors and covers (1 of 3). . . . . . . . . . . . . . . .		453
Table 52. Printer doors and covers (2 of 3). . . . . . . . . . . . . . . .		455
Table 53. Printer covers and doors parts . . . . . . . . . . . . . . . . .		457
Table 54. Internal cover assembly parts . . . . . . . . . . . . . . . . . .		459
Table 55. Internal components parts (1 of 6) . . . . . . . . . . . . . .		461
Table 56. Internal components parts (2 of 6) . . . . . . . . . . . . . .		463
Table 57. Internal components parts (3 of 6) . . . . . . . . . . . . . .		465
Table 58. Internal components parts (4 of 6) . . . . . . . . . . . . . .		467
Table 59. Internal components parts (5 of 6) . . . . . . . . . . . . . .		469
Table 60. Internal components parts (6 of 6) . . . . . . . . . . . . . .		471
Table 61. Drum/cartridge drive assembly parts . . . . . . . . . . . .		472
Table 62. Delivery drive assembly parts . . . . . . . . . . . . . . . . . .		473
Table 63. Tray 3 assembly parts. . . . . . . . . . . . . . . . . . . . . . . .		474
Table 64. Tray 2 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .		475
Table 65. Paper pick-up assembly parts. . . . . . . . . . . . . . . . . .		479
Table 66. Registration frame assembly parts . . . . . . . . . . . . . .		480
Table 67. Registration roller assembly parts. . . . . . . . . . . . . . .		481
Table 68. Feeder assembly parts . . . . . . . . . . . . . . . . . . . . . . .		482
Table 69. Tray 1 pick-up assembly parts . . . . . . . . . . . . . . . . .		483
Table 70. Tray 1 assembly parts. . . . . . . . . . . . . . . . . . . . . . . .		484
Table 71. Delivery assembly parts . . . . . . . . . . . . . . . . . . . . . .		485
Table 72. Delivery cover assembly parts . . . . . . . . . . . . . . . . .		486
Table 73. Transfer belt assembly parts. . . . . . . . . . . . . . . . . . .		487
Table 74. Fuser assembly parts . . . . . . . . . . . . . . . . . . . . . . . .		490
Table 75. PCA assembly parts . . . . . . . . . . . . . . . . . . . . . . . . .		491
Table 76. 2,000-sheet input unit cover and door parts . . . . . . .		493
Table 77. 2,000-sheet input unit internal component parts . . . .		495
Table 78.	Multi-bin mailbox component parts (1 of 3) . . . . . . . .	497

14 List of tables

Table 79. Multi-bin mailbox component parts (2 of 3) . . . . . . . . 499 Table 80. Multi-bin mailbox component parts (3 of 3) . . . . . . . . 501 Table 81. Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . 502 Table 82. Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . 513

EN	List of tables 15

16 List of tables

1 Product information

Chapter contents

Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 21 Operating environment specifications . . . . . . . . . . . . . 21 Acoustic emission specifications . . . . . . . . . . . . . . . . . 22 Printer dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Consumable storage specifications . . . . . . . . . . . . . . . 23 Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 General guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Media requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Selecting media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Storing media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Media capacity and sizes for input trays . . . . . . . . . . . 28 Media capacity and sizes for the multi-bin mailbox . . . 30 Media weights and sizes for duplexer . . . . . . . . . . . . . 31 Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Transparencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Glossy media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Heavy paper stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Colored media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Media to avoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

EN	Chapter contents 17

Identification (model and serial numbers) . . . . . . . . . . . . . . . 34 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 External views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Formatter assemblies . . . . . . . . . . . . . . . . . . . . . . . . . 37 Paper handling accessories and options . . . . . . . . . . . 38 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 FCC regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Canadian DOC regulations . . . . . . . . . . . . . . . . . . . . . 39 Declarations of conformity . . . . . . . . . . . . . . . . . . . . . . 40 VCCI statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . 43 EMI statement (Korea). . . . . . . . . . . . . . . . . . . . . . . . . 43 Laser safety statement . . . . . . . . . . . . . . . . . . . . . . . . 43 Laser statement for Finland . . . . . . . . . . . . . . . . . . . . . 44 Product information sheet . . . . . . . . . . . . . . . . . . . . . . 45 Toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Material Safety Data Sheet . . . . . . . . . . . . . . . . . . . . . 45 Ozone safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

18 Chapter 1 - Product information

Printer features

Table 1. Features and optional accessories by printer model

	8500	8500 N	8500 DN

Features
Standard DIMM memory	32 MB	32 MB	64 MB
Expandable to 512 MB of DIMM1 memory	X	X	X
Internal printer hard disk			X
2,000-sheet input unit			X
Duplexer			X
HP JetDirect 600N internal
print server		X	X

Optional accessories
External (EIO-compatible) printer	X	X
hard disk
ROM, or synchronous DRAM DIMMs	X	X	X
Duplexer	X	X
HP JetDirect 600N internal
print server	X
Multi-bin mailbox			X

1 To expand the DIMM memory to 512 MB, install 64-MB DIMMs in all eight DIMM slots.

EN	Printer features 19

Table 2. Printer performance

Print speeds	●	24 pages per minute (ppm) black and white (b/w)
	●	6 ppm color

Text and graphics		600 dpi resolution
resolution	●	600 dpi resolution

Approximate print
speeds		24 ppm b/w; 6 ppm color
Letter, A4-size	●	24 ppm b/w; 6 ppm color
Legal, Executive,		12 ppm b/w; 3 ppm color
11-by-17 inch size	●	12 ppm b/w; 3 ppm color
Heavy paper	●	3.2 ppm b/w; 2.2 ppm color
Transparencies	●	2.6 ppm b/w; 2.0 ppm color

Fonts	●	HP LaserJet 45 TrueType™ font set
	●	PostScript®fonts
Printer personality	●	Automatic personality switching
support	●	PCL1 and PostScript support

User interface and EIO	●	Standard ECP or bidirectional parallel cable interface
		(IEEE-1284 compliant)
	● 2 enhanced input/output (EIO) slots
	●	Automatic I/O switching

1 Not available at initial product introduction.

The approximate print speeds offered by this printer might vary from those listed above because the following factors affect processing time:

●complexity and size of graphics

●I/O configuration

●computer configuration

●amount of printer memory

●network operating system

●network configuration

●printer color calibration

20 Chapter 1 - Product information

Specifications

Electrical specifications

Table 3. Electrical specifications

Item	110-volt models	220-volt models

Power requirements	100 to 127 V (+/- 10%)	220 to 240 V (+/- 10%)
	50/60 Hz (+/- 2 Hz)	50/60 Hz (+/- 2 Hz)

Power consumption (typical)
During printing (black and	750 W (average)	750 W (average)
white)
During printing (color)	375 W (average)	375 W (average)
During standby	190 W (average)	190 W (average)
During Power Save mode	< 45 W	< 45 W
During Off mode	< 2 W	< 2 W

Minimum recommended circuit	12.0 A at 120 V	6.0 A at 220 V
capacity for typical product

Operating environment specifications

Table 4. Operating environment specifications

Item	Operating	Storage

Temperature
Recommended	20 to 26° C (68 to 79° F)	0 to 35° C (32 to 95° F)
Allowed	15 to 30° C (59 to 86° F)	-20 to 60° C (-4 to 140° F)

Humidity
Recommended	20 to 50% RH	35 to 85% RH
Allowed	10 to 80% RH	10 to 95% RH

Altitude
Allowed	0 to 3,048 m (0 to 10,000 ft)	0 to 3,048 m (0 to 10,000 ft)

EN	Specifications 21

Acoustic emission specifications

Table 5. Acoustic emissions

Operation position (per ISO 9296, DIN 45635, T.19)

Printing	LpA 54 dB(A)
Standby	LpA 49 dB(A)

Bystander 1 meter (per ISO 7779, DIN 45635, T.19)

Printing	LpA 50 dB(A)
Standby	LpA 45 dB(A)

Sound power (per ISO 9296)

Printing	6.7 B (A)
Standby	6.1 B (A)

Printer dimensions

Table 6. Printer dimensions

			Printer with 2,000-
			sheet input unit and
	Printer	Printer with stand	multi-bin mailbox

	750 mm	1111 mm	1230 mm
Height	30 in	44 in	48 in

	566 mm	566 mm	1056 mm
Width	22 in	22 in	42 in

	625 mm	625 mm	625 mm
Depth	25 in	25 in	25 in

Weight (with	87 kg	100 kg	118 kg
consumables)	192 lb	220 lb	260 lb

22 Chapter 1 - Product information

Consumable storage specifications

The life of consumables is greatly affected by their storage environment. Use the following table to determine shelf life of stored consumables.

For consumable replacement specifications, see page 105.

Table 7. Consumable storage specifications

	Normal (maximum of 2.5 years)	0 to 35° C (32 to 95° F)
Temperature
Temperature	Severe (maximum of 18 days)	High 35 to 40° C (95 to 104° F)
	Severe (maximum of 18 days)	High 35 to 40° C (95 to 104° F)
		Low 0 to -20° C (32 to -4° F)

Maximum	40 to 15° C (104 to 59° F) within 3 minutes
temperature	-20 to 25° C (-4 to 77° F) within 3 minutes
change rate

	Normal (maximum of 2.5 years)	35 to 85% RH
Humidity
Humidity	Severe (maximum of 18 days)	High 85 to 95% RH
	Severe (maximum of 18 days)	High 85 to 95% RH
		Low 10 to 35% RH

Atmospheric	460 to 760 mm Hg
pressure

EN	Specifications 23

Site requirements

General guidelines

Locating and placing the printer correctly are important in maintaining the performance level that has been set at the factory. In particular, be sure to adhere to the environmental specifications listed in this chapter. The following are recommendations for locating and placing the printer:

●Install in a well-ventilated, dust-free area.

●Install on a hard, level surface.

●Install where the temperature and humidity do not change abruptly. Do not install near water sources, humidifiers, air conditioners, refrigerators, or other major appliances.

●Do not expose the printer to direct sunlight, dust, open flames, or ammonia fumes.

●Install the printer away from walls or other objects. There must be enough space around the printer for proper access and ventilation (see figure 1 on page 25).

●Install the printer away from the direct flow of exhaust from air ventilation systems.

24 Chapter 1 - Product information

Space requirements

Figure 1. Space requirements

1Top view (with optional multi-bin mailbox and 2,000-sheet input unit)

2Front view (with optional multi-bin mailbox and 2,000-sheet input unit)

EN	Site requirements 25

Media requirements

	Selecting media
	Many types of paper and other print media can be used with the
	printer, within certain specifications. Using media that does not meet
	the specifications outlined in this chapter can increase the incidence
	of media jams, contribute to repair and maintenance costs, and cause
	premature wear, print quality problems, and problems requiring
	service. This service might not be covered by the HP warranty or
	service agreements.
	Before purchasing media or specialized forms, test a small quantity in
	the printer. Make sure your media supplier obtains and understands
	the media specifications in the HP LaserJet Printer Family Paper
	Specification Guide. For ordering information, see page 445.

Note	It is possible that media could meet all of the specifications in this
	chapter and still not print satisfactorily. This might be caused by
	abnormal characteristics of the printing environment, such as extremes
	in temperature and humidity.
	● For complete media specifications, see the HP LaserJet Printer

	Family Paper Specification Guide.
	● Use only print media that meet the specifications outlined in this
	chapter.
	● Do not try to print unsupported sizes or weights of media or other
	unsupported media.
	● Always handle transparencies and glossy media by their edges to
	avoid fingerprints in the image area.
	● Adhesives on any type of media must be compatible with the
	printer’s fusing temperatures (approximately 190° C or 374° F).
	● Do not use media that have already passed through the printer or
	through a copy machine, even if there is no printing on the page.
	● Recycled media can be used with this printer. Recycled media
	must meet the specifications described in this chapter.

26 Chapter 1 - Product information

Storing media

Follow these guidelines when stacking and storing media:

●Store paper in its ream wrapper until you are ready to use it.

●Rewrap partially used packages of media before storing.

●Stack each carton upright and squarely on top of each other.

●Store envelopes in a protective box to avoid damaging the envelope edges.

●Keep stored media away from temperature and humidity extremes.

●Do not store cartons or reams directly on the floor where they will absorb humidity. Instead, place cartons on a pallet or on shelves.

●Do not store individual reams in any manner that causes them to curl or warp along the edges.

●Do not stack more than six cartons on top of each other.

●Do not place anything on top of media, regardless of whether the media is packaged or unpackaged.

●Do not store printed documents in vinyl folders or expose the documents to petroleum-based solvents.

EN	Media requirements 27

Media capacity and sizes for input trays

The following table lists the types and sizes of media supported by each input tray. For best results, use HP LaserJet paper or conventional white copier paper. The media should be of good quality and free of cuts, nicks, tears, spots, loose particles, dust, wrinkles, voids, perforations, and curled or bent edges. For a complete list of media specifications, see the HP LaserJet Printer Family Paper Specification Guide.

Table 8. Media capacity and sizes for input trays

	Media size and
Media type	orientation	Media weight	Maximum capacity

Tray 1

Paper	11 by 17 in (portrait)	16 to 58 lb	100 sheets of
Plain	JIS B4 (portrait)	(60 to 216 g/m2) bond	20 lb (75 g/m2) bond
Preprinted	A3 (portrait)
Letterhead	A4 (portrait)		Limit to media-fill mark on
Prepunched	A5 (portrait)		the media width guides
Bond	Custom min. (99 by
Recycled	190 mm, 3.90 by 7.49 in)
Color	(portrait)
Card stock	Custom max. (304 by
Heavy (more	469 mm, 11.98 by 18.48
than 28 lb,	in) (portrait)
105 g/m2)	Executive (portrait)
Glossy	ISO B5 (portrait)
	JIS B4 (portrait)
	JIS B5 (portrait)
	Letter (landscape)
	Legal (landscape)

Envelopes	B5 (portrait)	Maximum 24 lb (90 g/m2)	Approximately 10
	C5 (portrait)	bond
	Commercial #10 (Com10)		Limit to media-fill mark on
	(portrait)		the media width guides
	DL (portrait)
	Double Post Card
	(JPOSTD)
	Monarch (portrait)

Labels	A4 (landscape)	—	Limit to media-fill mark on
	Letter (landscape)		the media width guides

Transparencies	A4 (landscape)	4 to 5 mils (0.10 to 0.13	Limit to media-fill mark on
	Letter (landscape)	mm) thick*	the media width guides

28 Chapter 1 - Product information

Table 8. Media capacity and sizes for input trays (continued)

	Media size and
Media type	orientation	Media weight	Maximum capacity

Tray 2

Paper	A4 (landscape)	16 to 28 lb	500 sheets of
Plain	JIS B4 (portrait)	(60 to 105 g/m2) bond	20 lb (75 g/m2) bond
Preprinted	Letter (landscape)
Letterhead	Legal (portrait)		Limit to media-fill mark on
Prepunched			the media width guides
Bond
Recycled
Color
Glossy

Transparency	A4 (portrait)	4 to 5 mils (0.10 to 0.13	Limit to media-fill mark on
	Letter (portrait)	mm) thick*	the media width guides

Tray 3

Paper	11 by 17 in (portrait)	16 to 28 lb	500 sheets of
Plain	A3 (portrait)	(60 to 105 g/m2) bond	20 lb (75 g/m2) bond
Preprinted	A4 (landscape)
Letterhead	JIS B4 (portrait)		Limit to media-fill mark on
Prepunched	Legal (portrait)		the media width guides
Bond	Letter (landscape)
Recycled
Color
Glossy

Transparency	A4 (portrait)	4 to 5 mils (0.10 to 0.13	Limit to media-fill mark on
	Letter (portrait)	mm) thick*	the media width guides

2,000-sheet input unit (only available on 8500 DN model)

Paper	11 by 17 in (portrait)	16 to 28 lb	2,000 sheets of
Plain	A4 (landscape)	(60 to 105 g/m2) bond	20 lb (75 g/m2) bond
Preprinted	JIS B4 (portrait)
Letterhead	Legal (portrait)		Limit to media-fill mark on
Prepunched	Letter (landscape)		the media width guides
Bond
Recycled
Color
Glossy

* HP recommends using transparencies that are 5 mil (0.13 mm) thick with this printer.

EN	Media requirements 29

Media capacity and sizes for the multi-bin mailbox

The following table lists the types and sizes of media supported by multi-bin mailbox output bins.

Table 9. Media capacity and sizes for the multi-bin mailbox

Media type	Media size	Media weight		Maximum capacity

Mailboxes

Paper	11 by 17 in	16 to 28 lb (60 to		250 sheets of 20 lb
Plain	3	105 g/m2) bond		(75 g/m2) bond
Preprinted	A4
Letterhead	JIS B4
Prepunched	Legal
Bond	Letter
Recycled
Color

Left (face-up) output bin

Paper	11 by 17 in	16 to 58 lb (60 to		125 sheets of 20 lb
Plain	A3	216 g/m2) bond		(75 g/m2) bond
Preprinted	A4
Letterhead	A5
Prepunched	Custom min. (99 by 190
Bond	mm, 3.90 by 7.49 in)
Recycled	Custom max. (304 by 469
Color	mm, 11.98 by 18.48 in)
Card Stock	Executive
Heavy (more	JIS B4
than 28 lb,	JIS B5
105 g/m2)	Legal
Glossy	Letter

Labels	A4	—	—
	Letter

Transparency	A4	4 to 5 mils (0.10 to 0.13		—
	Letter	mm) thick*

Envelopes	B5	Maximum 24 lb (90 g/m2)		30 Monarch-sized
	C5	bond		envelopes
	Commercial #10 (Com10)
	DL
	Double Post Card
	(JPOSTD)
	Monarch

* HP recommends using transparencies that are 5 mils (0.13 mm) thick with this printer.

30 Chapter 1 - Product information

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