HP 9040, 9050, 9000 Service Manual

4.8 (4)

HP LaserJet 9000/9040/9050

Service Manual

HP LaserJet 9000, 9040, and 9050 Series printers

Service_____________________

Development Company, LP

Reproduction, adaptation or translation without prior written permission is prohibited, except as allowed under the copyright laws.

Part number: Q3721-90963

Edition 1, 4/2005

The information contained herein is subject to change without notice.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Trademark Credits

Adobe® and PostScript® are trademarks of Adobe Systems Incorporated.

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

ENERGY STAR® is a U.S. registered service mark of the United States Environmental Protection Agency.

Table of contents
List of tables
List of figures
1 Product information
Product features of the HP LaserJet 9000 Series printers . . . . . . . . . . . . . . . . .	. 2
Product features of the HP LaserJet 9040/9050 Series printers . . . . . . . . . . . . .	. 4
Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 6
Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
External view of the printer and accessories . . . . . . . . . . . . . . . . . . . . . . . .	10
Interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
Optional accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Regulatory requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
FCC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Environmental product stewardship program . . . . . . . . . . . . . . . . . . . . . . . .	13
Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
Parts and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
Limited warranty for print-cartridge life . . . . . . . . . . . . . . . . . . . . . . . . . .	14

2 Product requirements

Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Guidelines for selecting print media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Special media specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Storing print media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Media input/output options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Trays, bins, and paper handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Supported sizes of paper for input and output . . . . . . . . . . . . . . . . . . . . . . . 26

3 Product configuration
Using the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	30
Control-panel buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	31
Numeric keypad commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	32
Settings and defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
Setting the display language. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
Setting the tray registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	33
Printer driver information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	36
Control-panel menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37
Using a menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37

iii

Retrieve job menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Paper-handling menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Configure device menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Printing submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Print-quality submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 System setup submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 I/O submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Resets submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Remote firmware upgrade (RFU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Upgrading firmware to a single printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4 Product maintenance

Preventative maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Preventive maintenance kit contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Cleaning the printer and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 General cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Internal cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Fuser cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Print cartridge information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Handling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Refilled print cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Print-cartridge weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Print-cartridge life expectancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Saving toner by using EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

5 Theory of operation

Basic operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Power-on sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Engine control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 DC controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 DC controller operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 High-voltage power supply circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Low-voltage power supply unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Formatter hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Laser/scanner system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 The eight processes of image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Print cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Pickup and feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Media-size detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Media-level detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Multifeed prevention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Overhead-transparency detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Fuser-wrapping-jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Tray 1 driver PCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Pickup and feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 Jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

iv Table of contents

Tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Tray 4 driver PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Pickup and feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Media-level and media-size detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

6 Removal and replacement

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Removal and replacement strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Repair notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Electrostatic discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Required tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Orientation of the printer (with tray 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Right top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Left top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Right door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Right lower cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Left door and diverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Left back cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Back cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Right and left rail covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Top assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Laser/scanner assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Delivery-fan assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Delivery-assembly fans and face-down-bin fan (fans 3, 6, and 4) . . . . . . . 115 Delivery motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Cartridge release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Front assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Transfer-roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Tray 2 and tray 3 (interchangeable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Rollers (pickup, feed, or separation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Fuser-jam-removal knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Registration-jam-removal knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Right assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Paper-input unit (PIU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Registration assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Transfer-guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Left assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Fuser assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Back assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Formatter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Low-voltage power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 High-voltage power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 DC controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Toner-sensor contact assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Drum motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Feed-drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Power-supply fan (fan 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Cartridge fan (fan 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Controller fan (fan 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	145
Jetlink connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	146
Fuser-connector holder assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	147
Fuser delivery-drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	149
Tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	151
Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	151
Left side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	151
Right side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	152
Back covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	153
Tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	154
Rollers (pickup, feed, and separation) . . . . . . . . . . . . . . . . . . . . . . . . . . .	155
Registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	156
Drive motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	157
Drive assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	158
Controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	159
Paper-size detection switch PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	160
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	161
Pickup assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	162
Paper-connecting unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	163

7 Troubleshooting

Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 Basic troubleshooting process flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Preliminary operating checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 General troubleshooting information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Abnormal noises are evident, such as grinding or

chattering when the main motor is turned on. . . . . . . . . . . . . . . . . . . . . . . 171 Media does not feed from tray x when printing from a software

program; the paper-path test is successful . . . . . . . . . . . . . . . . . . . . . . . . 171 Media does not print from tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 The printer stops printing and hangs on certain jobs . . . . . . . . . . . . . . . . . 171 Envelopes are wrinkling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Fusing is poor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 The printer feeds from an incorrect tray when different media

is selected for the first page of the job . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Troubleshooting by using control-panel messages . . . . . . . . . . . . . . . . . . . . . 175 Event log page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Control-panel messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Control-panel and event-log message format . . . . . . . . . . . . . . . . . . . . . . 179 Printer-message tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Alphabetical error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Numerical error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Userand service-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Paper-path test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Service test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Service-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Diagnostics flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Other diagnostics for the HP LaserJet 9000, 9000mfp, and 9000Lmfp . . . . . . 217 Cold reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Other diagnostics for the HP LaserJet 9040/9050, 9040mfp, and 9050mfp. . . 219 Cold reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219 Tray 4 diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Diagnostics label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Motor test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Standalone running test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

vi Table of contents

Sensor test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 Light-pattern interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 Jam troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Customer print job. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Clearing jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Evaluate the information pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Jetdirect page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 Supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 File directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Image-formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 Check the print cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 EconoMode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Skew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234 Image-defect tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Repeating defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 Media troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Determine the problem source: media or printer . . . . . . . . . . . . . . . . . . . . 244 Isolate a paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Isolate a media brand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Isolate a media type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Communication troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 Communications check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 Jetdirect configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Embedded LAN troubleshooting

(HP LaserJet 9040n/9050n, HP LaserJet 9040dn/9050dn,

HP LaserJet 9050mfp, and HP LaserJet 9040mfp only). . . . . . . . . . . . . . . 247 Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

8 Parts and diagrams

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256 Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256 Consumables, supplies, accessories, FRUs, and documentation . . . . . . . 257 Common hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261 Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 External covers and panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 Left door and diverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 Right cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 Internal components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 Drum feed drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 Fuser delivery drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 Cartridge lifter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276 500-sheet trays (tray 2 and tray 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Paper input unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 Registration assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Transfer roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280 Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 PCA assembly location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 Tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284 Tray 4 main body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284 Tray 4 drive assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Tray 4 PCA location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296

vii

Index

viii Table of contents

List of tables

Table 1. Features of the HP LaserJet 9000 Series printers . . . . . . . . . . . . . .	. . . 2
Table 2. Features of the HP LaserJet 9040/9050 Series printers . . . . . . . . .	. . . 4
Table 3. Configuration comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 6
Table 4. Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 7
Table 5. Electrical specifications (HP LaserJet 9000) . . . . . . . . . . . . . . . . . . .	. . 7
Table 6. Electrical specifications (HP LaserJet 9040) . . . . . . . . . . . . . . . . . . .	. . 8
Table 7. Electrical specifications (HP LaserJet 9050) . . . . . . . . . . . . . . . . . . .	. . 8
Table 8. Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 8
Table 9. Acoustical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 9
Table 10. Paper weight equivalence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 23
Table 11. Control-panel button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 31
Table 12. Printer state and numeric key effect . . . . . . . . . . . . . . . . . . . . . . . . .	. 32
Table 13. Storing print cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 67
Table 14. Normal sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 71
Table 15. Failure sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 73
Table 16. Pickup-and-feed system sensors and switches . . . . . . . . . . . . . . . .	. 90
Table 17. Pickup-and-feed system motors and solenoids . . . . . . . . . . . . . . . .	. 92
Table 18. Primary steps for troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .	167
Table 19. Power-on defects or a blank display . . . . . . . . . . . . . . . . . . . . . . . .	174
Table 20. Alphabetic error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	180
Table 21. Numeric error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	188
Table 22. Service test abnormality codes . . . . . . . . . . . . . . . . . . . . . . . . . . . .	213
Table 23. Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	215
Table 24. DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	223
Table 25. Tray 4 light-pattern interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . .	223
Table 26. General jam troubleshooting questions . . . . . . . . . . . . . . . . . . . . . .	224
Table 27. Printer devices troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .	228
Table 28. Image-quality checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	233
Table 29. Image defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	236
Table 30. Consumables, supplies, accessories, FRUs, and documentation	. 257
Table 31. Hardware table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	261
Table 32. Common torque values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	261
Table 33. Printer external covers and panels . . . . . . . . . . . . . . . . . . . . . . . . .	263
Table 34. Left door and diverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	264
Table 35. Right cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	265
Table 36. Internal components (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	267
Table 37. Internal components (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	269
Table 38. Internal components (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	271
Table 39. Internal components (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	273
Table 40. Drum feed drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	274
Table 41. Fuser delivery drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	275
Table 42. Cartridge lifter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	276
Table 43. 500-sheet trays (tray 2 and tray 3) . . . . . . . . . . . . . . . . . . . . . . . . . .	277
Table 44. Paper input unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	278
Table 45. Registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	279
Table 46. Transfer roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	280
Table 47. Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	282
Table 48. PCA location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	283
Table 49. Tray 4 main body (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	285

Table 50. Tray 4 main body (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 Table 51. Tray 4 drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Table 52. Tray 4 PCA location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Table 53. Tray 1 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 Table 54. Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 Table 55. Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296

x List of tables

List of figures

Figure 1. Sample identification label . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 6
Figure 2. External view of the printer and accessories . . . . . . . . . . . . . . . .	. . . . 10
Figure 3. Interface connections (HP LaserJet 9040/9050 Series printer)	. . . . . 11
Figure 4. Interface connections (HP LaserJet 9000 Series printer) . . . . . .	. . . . 11
Figure 5. Optional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 12
Figure 6. Space requirements for the base model . . . . . . . . . . . . . . . . . . .	. . . . 17
Figure 7. Space requirements with a finishing device
(3,000-sheet stapler/stacker shown) and tray 4 installed . . . . . . . . . . .	. . . . 18
Figure 8. Sample seams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 20
Figure 9. Adhesive labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 21
Figure 10. Media trays, bins, and paper handling . . . . . . . . . . . . . . . . . . .	. . . . 25
Figure 11. Control-panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 30
Figure 12. Registration page (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 34
Figure 13. Registration page (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 35
Figure 14. Turn off the printer and remove the power cords . . . . . . . . . . .	. . . . 62
Figure 15. Remove the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 62
Figure 16. Wipe any residue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 63
Figure 17. Replace the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 63
Figure 18. Lock the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 63
Figure 19. Close the front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 64
Figure 20. Sample cleaning page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 65
Figure 21. Printer systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 70
Figure 22. Sequence-of-operation block diagram . . . . . . . . . . . . . . . . . . .	. . . . 71
Figure 23. Timing chart block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 74
Figure 24. Engine-control-system block diagram . . . . . . . . . . . . . . . . . . . .	. . . . 75
Figure 25. DC controller PCA block diagram . . . . . . . . . . . . . . . . . . . . . . .	. . . . 76
Figure 26. High-voltage power supply block diagram . . . . . . . . . . . . . . . .	. . . . 78
Figure 27. Power-supply-block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 80
Figure 28. Laser/scanner system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 83
Figure 29. Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 84
Figure 30. Print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 85
Figure 31. Pickup-and-feed system sensors and switches . . . . . . . . . . . .	. . . . 89
Figure 32. Pickup-and-feed system motors and solenoids . . . . . . . . . . . .	. . . . 91
Figure 33. Tray 1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 93
Figure 34. Tray 4 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . 95
Figure 35. View of front and right side . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 100
Figure 36. View of back and left side . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 100
Figure 37. Right top cover (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 101
Figure 38. Right top cover (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 102
Figure 39. Left top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 103
Figure 40. Front cover (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 104
Figure 41. Front cover (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 104
Figure 42. Right door (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 105
Figure 43. Right door (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 105
Figure 44. Right lower cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 106
Figure 45. Left door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 107
Figure 46. Left back cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 108
Figure 47. Back cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 109
Figure 48. Rail covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 110

Figure 49. Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	111
Figure 50. Laser/scanner assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	112
Figure 51. Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	113
Figure 52. Delivery-fan assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	114
Figure 53. Delivery-assembly fans and face-down-bin fan (1 of 2) . . . . . . . . .	115
Figure 54. Delivery-assembly fans and face-down-bin fan (2 of 2) . . . . . . . . .	115
Figure 55. Delivery motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	116
Figure 56. Cartridge release lever (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	117
Figure 57. Cartridge release lever (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	117
Figure 58. Cartridge release lever (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	118
Figure 59. Print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	119
Figure 60. Transfer-roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	120
Figure 61. Tray 2 or tray 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	121
Figure 62. Rollers (pickup, feed, or separation) . . . . . . . . . . . . . . . . . . . . . . .	122
Figure 63. Fuser-jam-removal knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	123
Figure 64. Registration-jam-removal knob . . . . . . . . . . . . . . . . . . . . . . . . . . .	124
Figure 65. Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	125
Figure 66. Paper-input unit (1 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	126
Figure 67. Paper-input unit (2 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	126
Figure 68. Paper-input unit (3 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	127
Figure 69. Paper-input unit (4 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	127
Figure 70. Paper-input unit (5 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	128
Figure 71. Registration assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	129
Figure 72. Registration assembly (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	130
Figure 73. Transfer-guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	131
Figure 74. Reinstalling the transfer-guide assembly . . . . . . . . . . . . . . . . . . . .	132
Figure 75. Duplexer (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	133
Figure 76. Duplexer (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	133
Figure 77. Fuser assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	134
Figure 78. Fuser assembly (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	134
Figure 79. Formatter (HP LaserJet 9000 shown) . . . . . . . . . . . . . . . . . . . . . .	135
Figure 80. Low-voltage power supply (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . .	136
Figure 81. Low-voltage power supply (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . .	136
Figure 82. High-voltage power supply (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . .	137
Figure 83. High-voltage power supply (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . .	137
Figure 84. DC controller (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	138
Figure 85. DC controller (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	139
Figure 86. Toner-sensor contact assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .	140
Figure 87. Reinstalling the toner-sensor contact assembly . . . . . . . . . . . . . . .	140
Figure 88. Drum motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	141
Figure 89. Feed-drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	142
Figure 90. Power-supply fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	143
Figure 91. Cartridge fan (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	144
Figure 92. Cartridge fan (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	144
Figure 93. Controller fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	145
Figure 94. Jetlink connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	146
Figure 95. Fuser-connector holder assembly (1 of 3) . . . . . . . . . . . . . . . . . . .	147
Figure 96. Fuser-connector holder assembly (2 of 3) . . . . . . . . . . . . . . . . . . .	147
Figure 97. Fuser-connector holder assembly (3 of 3) . . . . . . . . . . . . . . . . . . .	148
Figure 98. Fuser delivery-drive assembly (1 of 3) . . . . . . . . . . . . . . . . . . . . . .	149
Figure 99. Fuser delivery-drive assembly (2 of 3) . . . . . . . . . . . . . . . . . . . . . .	149
Figure 100. Fuser delivery-drive assembly (3 of 3) . . . . . . . . . . . . . . . . . . . . .	150
Figure 101. Left side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	151
Figure 102. Right side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	152
Figure 103. Back covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	153
Figure 104. Tray 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	154
Figure 105. Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	155
Figure 106. Registration assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . .	156
Figure 107. Registration assembly (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . .	156
xii List of figures

Figure 108. Drive motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 157
Figure 109. Drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 158
Figure 110. Controller board (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 159
Figure 111. Controller board (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 159
Figure 112. Paper-size switch PCA (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . .	. 160
Figure 113. Paper-size switch PCA (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . .	. 160
Figure 114. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 161
Figure 115. Pickup assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 162
Figure 116. Pickup assembly (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 162
Figure 117. Paper-connecting unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 163
Figure 118. Basic troubleshooting process flow (1 of 2) . . . . . . . . . . . . . . . .	. 168
Figure 119. Basic troubleshooting process flow (2 of 2) . . . . . . . . . . . . . . . .	. 169
Figure 120. Sample event log (HP LaserJet 9000 series printer page shown) 176
Figure 121. Example of events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 177
Figure 122. Diagnostics flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 216
Figure 123. Tray 4 label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 221
Figure 124. Sample configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 227
Figure 125. Sample Jetdirect configuration page . . . . . . . . . . . . . . . . . . . . . .	. 229
Figure 126. Sample supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 230
Figure 127. Sample usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 231
Figure 128. Sample file directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 232
Figure 129. Image defect examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 235
Figure 130. Repeating defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 243
Figure 131. Printer wiring diagram (HP LaserJet 9000 series printer) . . . . . .	. 251
Figure 132. Printer wiring diagram (HP LaserJet 9040/9050 series printer)	. . 252
Figure 133. Tray 4 wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 253
Figure 134. Printer external covers and panels . . . . . . . . . . . . . . . . . . . . . . .	. 262
Figure 135. Left door and diverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 264
Figure 136. Right cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 265
Figure 137. Internal components (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 266
Figure 138. Internal components (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 268
Figure 139. Internal components (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 270
Figure 140. Internal components (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 272
Figure 141. Drum feed drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 274
Figure 142. Fuser delivery drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 275
Figure 143. Cartridge lifter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 276
Figure 144. 500-sheet trays (tray 2 and tray 3) . . . . . . . . . . . . . . . . . . . . . . .	. 277
Figure 145. Paper input unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 278
Figure 146. Registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 279
Figure 147. Transfer roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 280
Figure 148. Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 281
Figure 149. PCA assembly location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 283
Figure 150. Tray 4 main body (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 284
Figure 151. Tray 4 main body (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 286
Figure 152. Tray 4 drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 288
Figure 153. Tray 4 PCA location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 289
Figure 154. Tray 1 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 290

xiii

xiv List of figures

1 Product information

Chapter contents

Product features of the HP LaserJet 9000 Series printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Product features of the HP LaserJet 9040/9050 Series printers . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 External view of the printer and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Interface connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Optional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Regulatory requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 FCC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Environmental product stewardship program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Parts and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Limited warranty for print-cartridge life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Limited warranty for print-cartridge life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Chapter contents 1

Product features of the HP LaserJet 9000 Series printers

HP LaserJet 9000 printer (C8519A)

The HP LaserJet 9000 printer comes standard with 64 MB RAM, wide-format printing, and two 500-sheet trays (tray 2 and tray 3).

HP LaserJet 9000n printer (C8520A)

The HP LaserJet 9000n printer comes standard with 64 MB RAM, wide-format printing, two 500-sheet trays (tray 2 and tray 3), a 100-sheet multipurpose tray (optional tray 1), and an embedded HP Jetdirect print server.

HP LaserJet 9000dn printer (C8521A)

The HP LaserJet 9000dn printer comes standard with 64 MB RAM, wide-format printing, two 500-sheet trays (tray 2 and tray 3), a 100-sheet multipurpose tray (optional tray 1), an embedded HP Jetdirect print server, and an optional duplex printing accessory (duplexer) for printing on both sides of paper.

HP LaserJet 9000hns printer (C8522A)

The HP LaserJet 9000hns printer contains the HP LaserJet 9000dn with a 2,000sheet feeder (optional tray 4) and an optional 3,000-sheet stapler/stacker, an optional 3,000-sheet stacker, or an optional multifunction finisher.

Table 1. Features of the HP LaserJet 9000 Series printers

Speed	z	50 pages per minute (ppm) for letter-size print media and A4-size media.
	z First page out in less than 8 seconds.
	z Transmit Once, Raster Image Processing (RIP) Once technology.

Resolution	z	600 dots per inch (dpi) with Resolution Enhancement technology (REt).
	z HP FastRes 1200 (1200-dpi-like quality at up to 50 ppm letter and A4).
	z Up to 256 levels of gray.

Toner	z	HP UltraPrecise print cartridge. The capacity is rated at an average
		30,000 pages with 5% coverage.
	z	EconoMode capability.

PCL printer	z	Fast printing performance, built-in Intellifont and TrueType scaling
language and fonts		technologies, built-in HP-GL/2 vector graphics, and advanced imaging
		capabilities are benefits of the printer control language (PCL) 6 printer
		language. PCL 6 also includes 80 scalable TrueType fonts and one
		bitmapped Line Printer Font.

PS language	z	PostScript® 3 (PS) emulation.
Automatic language	z	The printer automatically determines and switches to the appropriate
switching		language for the print job.

Enhanced memory	z	The HP LaserJet 9000 Series printers come with 64 MB of memory and
and memory expansion		can be expanded to 384 MB.

2 Chapter 1 Product information

Table 1. Features of the HP LaserJet 9000 Series printers (continued)

Expandability	All models accept the following accessories:
	z Optional tray 1, a 100-sheet or 10-envelope multipurpose tray for
		automatic and manual feeding of envelopes, labels, transparencies,
		custom-sized media from 98 x 191 mm (3.8 x 7.5 inches) to
		312 x 470 mm (12.3 x 18.5 in), and heavy paper.
	z Optional tray 4, a 2,000-sheet feeder that supports letter, legal, B4, A4,
		11 x 17 inches, A3, executive, B5, and custom 182 x 210 mm
		(7.2 x 8.3 inches) to 297 x 431.8 mm (11.7 x 17 inches) print media.
	z	Optional duplexer.
	z Optional 3,000-sheet stapler/stacker, 3,000-sheet stacker, or
		multifunction finisher.
	z Enhanced input/output (EIO) cards.
	z Dual inline memory module (DIMM) slots for adding memory and fonts.
	z Hard disk for RIP Once capability, job retention features, and font
		storage.

Wireless printing	z	The printer supports wireless printing with the installation of a Fast
		InfraRed Connect pod.

Interface connection	z	Bidirectional ECP type-C parallel port (IEEE-1284 compliant).
	z Three EIO slots for hard-disk-accessory or print-server installation.
	z Wireless Fast InfraRed port (IrDA compliant).
	z	Foreign interface connector.
	z HP Jet-Link connector.

Networking	z	Three EIO slots for hard-disk-accessory or print-server installation.
	z An HP 610N Jetdirect print server is included with HP LaserJet 9000n,
		9000dn, and 9000hns.

Duty cycle	z	300,000 images per month.

Product features of the HP LaserJet 9000 Series printers 3

Product features of the HP LaserJet 9040/9050 Series printers

HP LaserJet 9040/9050 printer

The HP LaserJet 9040/9050 printer (product number Q7697A/Q3721A) comes standard with 64 MB RAM, wide-format printing, and two 500-sheet trays (tray 2 and tray 3).

HP LaserJet 9040n/9050n printer

The HP LaserJet 9040n/9050n printer (product number Q7698A/Q3722A) comes standard with 128 MB RAM, wide-format printing, two 500-sheet trays (tray 2 and tray 3), a 100-sheet multipurpose tray (tray 1), and an embedded HP Jetdirect print server.

HP LaserJet 9040dn/9050dn printer

The HP LaserJet 9040dn/9050dn printer (product number Q7699A/Q3723A) comes standard with 128 MB RAM, wide-format printing, two 500-sheet trays (tray 2 and tray 3), a 100-sheet multipurpose tray (tray 1), an embedded HP Jetdirect print server, and a duplex printing accessory (duplexer) for printing on both sides of paper.

Table 2. Features of the HP LaserJet 9040/9050 Series printers

Speed	z	40 pages per minute (ppm) (HP LaserJet 9040 series printer) or 50 ppm
		(HP LaserJet 9050 series printer) on letter or ISO A4 paper.
	z First page out in less than 8 seconds.
	z Transmit Once, RIP Once technology.

Resolution	z	600 dpi with REt.
	z FastRes 1200 provides 1200 dpi quality at full speed.
	z Up to 256 levels of gray.

Toner	z	HP UltraPrecise print cartridge. The capacity is rated at an average
		30,000 pages with 5% coverage.
	z	EconoMode capability.

PCL printer	z	Fast printing performance, built-in Intellifont and TrueType scaling
language and fonts		technologies, built-in HP-GL/2 vector graphics, and advanced imaging
		capabilities are benefits of the printer control language (PCL) 6 printer
		language. PCL 6 also includes 80 scalable TrueType fonts and one
		bitmapped Line Printer Font.

PS language	z	PostScript 3 (PS) emulation.

Automatic language	z	The printer automatically determines and switches to the appropriate
switching		language for the print job.

Enhanced memory	z	The HP LaserJet 9040/9050 Series printers come with 64 or 128 MB of
and memory expansion		memory and can be expanded to 512 MB.

4 Chapter 1 Product information

Table 2. Features of the HP LaserJet 9040/9050 Series printers (continued)

Expandability	All models accept the following accessories:
	z Optional tray 1, a 100-sheet or 10-envelope multipurpose tray for
		automatic and manual feeding of envelopes, labels, transparencies,
		custom-sized media from 98 x 191 mm (3.8 x 7.5 inches) to
		312 x 470 mm (12.3 x 18.5 inches), and 64 to 216 g/m² (17to 58-lb
		bond).
	z Optional tray 4, a 2,000-sheet feeder that supports letter, legal, B4, A4,
		11 x 17 inches, A3, executive, B5, and custom 76 x 127 mm
		(3 x 5 inches) to 297 x 431 mm (11.7 x 17 inches) print media.
	z	Optional duplexer.
	z Optional 3,000-sheet stapler/stacker, 3,000-sheet stacker, multifunction
		finisher, or 8-bin mailbox.
	z	EIO cards.
	z DIMM slots for adding memory.
	z Hard disk for RIP Once capability, job retention features, and font
		storage.
	z Compact Flash slots for printer firmware forms or fonts.

Wireless printing	z	The printer supports wireless printing with the installation of a Fast
		InfraRed Connect pod.

Interface connection	z	Bidirectional ECP type-B parallel port (IEEE-1284 compliant).
	z Two EIO slots for accessory installation.
	z HP Jet-Link connector.

Networking	z	Two EIO slots for hard-disk-accessory or print server installation.
	z A Jetdirect print server is included with HP LaserJet 9040n/9050n and
		9040dn/9050dn.

Duty cycle	z	300,000 images per month.

Product features of the HP LaserJet 9040/9050 Series printers 5

Product specifications

Identification

The model number and printer serial number are listed on an identification label located in two places:

z on the rear cover

z on the chassis behind the right door

The model number is alphanumeric, such as C4270A.

The serial number contains information about the country/region of origin and the revision level, the production code, and production number of the printer. An example of a serial number is USBB123456.

The top label also contains power-rating and regulatory information. See figure 1.

Note	The power-rating and regulatory information varies by country/region.
	Electrical information	Regional certification

					Model and serial number			Manufacture date
Figure 1.		Sample identification label
	Table 3. Configuration comparison

			HP	HP		HP	HP	HP	HP	HP
			LaserJet	LaserJet		LaserJet	LaserJet	LaserJet	LaserJet	LaserJet
			9000	9000n		9000dn	9000hns	9040/9050	9040n/9050n	9040dn/9050dn

	Standard memory		64 MB	64 MB		64 MB	64 MB	64 MB	128 MB	128 MB
	Maximum memory		384 MB	384 MB		384 MB	384 MB	512 MB	512 MB	512 MB

	PS emulation		Standard	Standard		Standard	Standard	Standard	Standard	Standard

	Jetdirect print server		Optional	Standard		Standard	Standard	Optional	Standard	Standard

	Optional duplexer		Optional	Optional		Standard	Standard	Optional	Optional	Standard

	Optional tray 1,		Optional	Standard		Standard	Standard	Optional	Standard	Standard
	100-sheet
	multipurpose tray

	Optional tray 4,		Optional	Optional		Optional	Standard	Optional	Optional	Optional
	2,000-sheet feeder

6 Chapter 1 Product information

Table 3. Configuration comparison

LaserJet

9000

9000n

9000dn

9000hns

9040/9050

9040n/9050n

9040dn/9050dn

Optional 3,000-

Optional

sheet stacker

Optional 3,000-

Optional

Standard

Optional

sheet stapler/stacker

Optional

multifunction finisher

Optional 8-bin

N/A

Optional

mailbox

Optional hard disk

Optional

Table 4. Physical specifications

HP LaserJet

9000, 9040, and 9050

9000n/9000dn,

9000hns

9040n/9040dn, and

9050n/9050dn

Height

600 mm (23.6 inches)

1,036.4 mm (40.8 inches)

Width

990.8 mm (39.0 inches)

1,115.8 mm (44.4 inches)

1,788.2 mm (70.4 inches)

Depth

1,001 mm (42.7 inches)

Weight

63.5 kg (140 lb)

9000n/9040n/9050n:

76.2 kg (168 lb)

(without print cartridge)

69.4 kg (153 lb)

9000dn/9040dn/9050dn:

76.2 kg (168 lb)

Table 5. Electrical specifications (HP LaserJet 9000)

Volts	Frequency	Amperes (A)	Watts (W) (typical)	Thermal units per hour
				(BTu/hr)

100-127 Vac	50/60 Hz	Minimum	printing = 1,040 W	printing = 3,550.36 BTU/hr
± 10%	± 2 Hz	recommended current	standby = 265 W	standby = 904.71 BTU/hr
		capacity =	PowerSave 1 = 40 W	PowerSave 1 = 136.56 BTU/hr
		15 A dedicated circuit	PowerSave 2 = 25 W	PowerSave 2	= 85.35 BTU/hr
			off = 0 W	off = 0 BTU/hr

220-240 Vac	50/60 Hz	Minimum	printing = 995 W	printing = 3,396.93 BTU/hr
± 10%	± 2 Hz	recommended current	standby = 265 W	standby = 904.71 BTU/hr
		capacity =	PowerSave 1 = 40 W	PowerSave 1	= 136.56 BTU/hr
		6.5 A dedicated circuit	PowerSave 2 = 25 W	PowerSave 2	= 85.35 BTU/hr
			off = 0.2 W	off = 0.69 BTU/hr

Product specifications 7

Note

WARNING!

Table 6. Electrical specifications (HP LaserJet 9040)

Volts	Frequency	Ampres	Watts (W) (typical)	Thermal units per hour
				(BTu/hr)

100-127 Vac ±	50/60 Hz	Minimum	printing = 900 W	printing = 3,550.36 BTu/hr
10%	± 2 Hz	recommended current	standby = 200W	standby = 904.71 BTu/hr
		capacity =	PowerSave 1 = 158 W	PowerSave 1 = 136.56 BTu/hr
		12 A dedicated circuit	PowerSave 2 = 21 W	PowerSave 2 = 85.35 BTu/hr
			off = 0.5 W	off = 0 BTu/hr

220-240 Vac ±	50/60 Hz	Minimum	printing = 900 W	printing = 3,396.93 BTu/hr
10%	± 2 Hz	recommended current	standby = 200 W	standby = 904.71 BTu/hr
		capacity =	PowerSave 1 = 40 W	PowerSave 1 = 136.56 BTu/hr
		5.3 A dedicated circuit	PowerSave 2 = 21 W	PowerSave 2 = 85.35 BTu/hr
			off = 0.5 W	off = 0.69 BTu/hr

Table 7. Electrical specifications (HP LaserJet 9050)

Volts	Frequency	Ampres	Watts (W) (typical)	Thermal units per hour
				(BTu/hr)

100-127 Vac ±	50/60 Hz	Minimum	printing = 1,000 W	printing = 3,550.36 BTu/hr
10%	± 2 Hz	recommended current	standby = 200 W	standby = 904.71 BTu/hr
		capacity =	PowerSave 1 = 158 W	PowerSave 1 = 136.56 BTu/hr
		12 A dedicated circuit	PowerSave 2 = 21 W	PowerSave 2 = 85.35 BTu/hr
			off = 0.5 W	off = 0 BTu/hr

220-240 Vac ±	50/60 Hz	Minimum	printing = 1,000 W	printing = 3,396.93 BTu/hr
10%	± 2 Hz	recommended current	standby = 200 W	standby = 904.71 BTu/hr
		capacity =	PowerSave 1 = 40 W	PowerSave 1 = 136.56 BTu/hr
		6.5 A dedicated circuit	PowerSave 2 = 21 W	PowerSave 2 = 85.35 BTu/hr
			off = 0.5 W	off = 0.69 BTu/hr

Electrical specifications might change. See www.hp.com/go/lj9000 or www.hp.com/go/lj9050_lj9040 for the current information.

Power requirements are based on the country/region where the printer is sold. Do not convert operating voltages. This can damage the printer and void the product warranty.

Table 8. Environmental specifications

Operating temperature	10°C to 32.5°C
	(50°F to 91°F)

Relative humidity	10% to 80%

Storage temperature	-40ºF to +60ºF

Storage humidity	15% to 90%

8 Chapter 1 Product information

Table 9. Acoustical specifications

Declared per ISO 9296

Sound power level1	Printing (50 ppm)	LWAd = 7.2	Bels (A) [72 dB(A)]
HP LaserJet 9050
	Ready	LWAd = 5.6	Bels (A) [56 dB(A)]
Sound power level2
Sound power level2	Printing (40 ppm)	LWAd = 7.0	Bels (A) [dB(A)]
HP LaserJet 9040	Printing (40 ppm)	LWAd = 7.0	Bels (A) [dB(A)]
HP LaserJet 9040
	Ready	LWAd = 5.6	Bels (A) [dB(A)]

Sound pressure level3 (Bystander position) HP LaserJet 9050

Sound pressure level4 (Bystander position) HP LaserJet 9040

Printing (50 ppm)	LpAm = 56 dB(A)
Ready	LpAm = 40 dB(A)

Printing (40 ppm)	LpAm = 54 dB(A)

Ready

LpAm = 39 dB(A)

1.Values current as of October 16, 2003. Values subject to change, see www.hp.com/support/ lj9050_lj9040 for current information.

2.Values current as of October 24, 2004. Values subject to change, see www.hp.com/support/ lj9050_lj9040 for current information.

3.Values current as of October 16, 2003. Values subject to change, see www.hp.com/support/ lj9050_lj9040 for current information.

4.Values current as of October 24, 2004. Values subject to change, see www.hp.com/support/ lj9050_lj9040 for current information.

Product specifications 9

Product overview

External view of the printer and accessories

Face-up bin

Optional 3,000-sheet stapler/stacker, 3,000sheet stacker, 8-bin mailbox, or multifunction finisher

Front door

Duplexer (inside the printer)

Left door (behind the output

Tray 2

Tray 3

Optional tray 4

Figure 2. External view of the printer and accessories

Standard output bin (face-down bin)

Optional

tray 1

Right door

Vertical transfer door

10 Chapter 1 Product information

Interface connections

Local area network (LAN) connector (RJ-45)

Parallel B connector (Parallel)

HP Jet-Link connector (for paper-handling accessory)

Figure 3. Interface connections (HP LaserJet 9040/9050 Series printer)

Parallel connector

HP Jetdirect print server (optional)

Foreign interface connector (not used)

I/O

slots HP Fast InfraRed Connect (optional IR pod)

HP Jet-Link connector (optional accessories connection)

Figure 4. Interface connections (HP LaserJet 9000 Series printer)

Product overview 11

Optional accessories

Multifunction finisher

3,000-sheet stacker

3,000-sheet stapler/stacker

Tray 1

Duplex printing accessory (duplexer)

	8-bin mailbox	Tray 4
	8-bin mailbox	HP Fast InfraRed
	(HP LaserJet	HP Fast InfraRed
	9040/9050 Series	Connect (HP LaserJet
	printer only)	9000 Series printer only

Figure 5. Optional accessories

12 Chapter 1 Product information

Regulatory information

Regulatory requirements

For regulatory information and requirements, please see the HP LaserJet 9000 Start Guide or the

HP LaserJet 9040/9050 Start Guide.

FCC regulations

For FCC regulations, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide.

Declaration of conformity

For declaration of conformity information, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide.

Environmental product stewardship program

For environmental product stewardship program information, please see the HP LaserJet 9000 Use Guide or the HP LaserJet 9040/9050 Use Guide.

Regulatory information 13

Service approach

Repair of the printer normally begins with a three-step process:

zisolate the problem to the major system (the host computer, the network and/or server, or the printer system)

zdetermine whether the problem is located in one of the paper-handling devices or in the printer engine

ztroubleshoot the problem using the procedures in chapter 7

When a faulty part is located, repair is usually accomplished by assembly-level replacement of field replaceable units (FRUs). Some mechanical assemblies can be repaired at the subassembly level. Hewlett-Packard does not support replacement of components on the printed circuit assemblies.

Parts and supplies

The following information helps you locate parts and assistance.

Ordering information

"Ordering parts" in chapter 8 of this manual contains FRUS and replacement part numbers. Replacement parts can be ordered from the HP Customer Services and Support Organization (HPS).

"Consumables, supplies, accessories, FRUs, and documentation" in chapter 8 of this manual contains information about accessories that are specifically designed for this printer. Order accessories from HPS.

Phone listings

zHPS (for U.S.)

(800)752-0900

zHPS (for Canada)

(800)387-3867

zHPS (for Europe) (49 7031) 142253

Exchange program

Hewlett-Packard offers remanufactured assemblies for some parts. These are identified in "Illustrations and parts lists" in chapter 8, and can be ordered through HPS.

Consumables

The printer has two consumables: the print cartridge and the preventive maintenance kit. The stapler/stacker and the 8-bin mailbox have one consumable: the staple cartridge. These are identified in "Illustrations and parts lists" in chapter 8, and can be ordered through HPS.

Warranty

For warranty information and requirements, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide.

Limited warranty for print-cartridge life

For print-cartridge warranty information, please see the HP LaserJet 9000 Start Guide or the HP LaserJet 9040/9050 Start Guide.

14 Chapter 1 Product information

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