HP 9040, 9050, 9000 Service Manual

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HP LaserJet 9000/9040/9050

Service Manual

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HP LaserJet 9000, 9040, and 9050 Series printers

Service _____________________

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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. E

NERGY STAR

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

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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

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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

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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 replace ment

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

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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

User- and 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

Page 9

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

Page 10

Index

viii Table of contents

Page 11

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

Page 12

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

Page 13

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

Page 14

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

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Page 15

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

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xiv List of figures

Page 17

1 Product infor mation

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

Chapter contents 1

Page 18

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

Resolution z 600 dots per inch (dpi) with Resolution Enhancement technology (REt).

Toner

PCL printer language and fonts

PS language Automatic language

switching Enhanced memory

and memory expansion

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

z HP FastRes 1200 (1200-dpi-like quality at up to 50 ppm letter and A4). z Up to 256 levels of gray.

z HP UltraPrecise print cartridge. The capacity is rated at an average

30,000 pages with 5% coverage.

z EconoMode capability. z Fast printing performance, built-in Intellifont and TrueType

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.

z PostScript z The printer automatically determines and switches to the appropriate

language for the print job.

z The HP LaserJet 9000 Series printers come with 64 MB of memory and

can be expanded to 384 MB.

3 (PS) emulation.

scaling

2 Chapter 1 Product information

Page 19

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

Interface connecti on z Bidirectional ECP type-C parallel port (IEEE-1284 compliant).

z The printer supports wireless printing with the installation of a Fast

InfraRed Connect pod.

z Three EIO slots for hard-disk-accessor y or print-server installation. z Wireless Fast InfraRed port (IrDA compliant). z Foreign interface connector. z HP Jet-Link connector.

Networking

Duty cycle

z Three EIO slots for hard-disk-accessor y or print-server installation. z An HP 610N Jetdirect print server is included with HP LaserJet 9000n,

9000dn, and 9000hns.

z 300,000 images per month.

Product features of the HP LaserJet 9000 Series printers 3

Page 20

Product features of the HP LaserJet 9040/9050 Series printers

HP LaserJet 9040/9050 printe r

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

Resolution z 600 dpi with REt.

Toner

PCL printer language and fonts

PS language Automatic language

switching Enhanced memory

and memory expansion

z 40 pages per minute (ppm) (HPLaserJet 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.

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

z HP UltraPrecise print cartridge. The capacity is rated at an average

30,000 pages with 5% coverage.

z EconoMode capability. z Fast printing performance, built-in Intellifont and TrueType scaling

z PostScript 3 (PS) emulation. z The printer automatically determines and switches to the appropriate

language for the print job.

z The HP LaserJet 9040/9050 Series printers come with 64 or 128 MB of

memory and can be expanded to 512 MB.

4 Chapter 1 Product information

Page 21

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 (17- to 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 connecti on 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-access ory 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

Page 22

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 LaserJet 9000

Standard memory Maximum memory

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,

100-sheet multipurpose tray

Optional tray 4, 2,000-sheet feeder

64 MB 384 MB

Optional Standard Standard Standard Optional Standard Standard

Optional Optional Optional Standard Optional Optional Optional

HP LaserJet 9000n

64 MB 384 MB

HP LaserJet 9000dn

64 MB 384 MB

HP LaserJet 9000hns

64 MB 384 MB

HP LaserJet 9040/9050

64 MB 512 MB

HP LaserJet 9040n/9050n

128 MB 512 MB

HP LaserJet 9040dn/9050dn

128 MB 512 MB

6 Chapter 1 Product information

Page 23

Table 3. Configuration comparison

HP LaserJet 9000

Optional 3,000sheet stacker

Optional 3,000sheet stapler/stacker

Optional multifunction finisher

Optional 8-bin mailbox

Optional hard disk Optional Optional Optional Optional Optional Optional Optional

Optional Optional Optional Optional Optional Optional Optional

Optional Optional Optional Standard Optional Optional Optional

Optional Optional Optional Optional Optional Optional Optional

N/A N/A N/A N/A Optional Optional Optional

HP LaserJet 9000n

HP LaserJet 9000dn

HP LaserJet 9000hns

HP LaserJet 9040/9050

HP LaserJet 9040n/9050n

HP LaserJet 9040dn/9050dn

Table 4. Physical specifications

HP LaserJet 9000, 9040, and 9050

HP LaserJet 9000n/9000dn,

HP LaserJet

9000hns 9040n/9040dn, and 9050n/9050dn

Height 600 mm (23.6 inches) 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) 1,001 mm (42.7 inches) 1,001 mm (42.7 inches) Weight

(without print cartridge)

63.5 kg (140 lb) 9000n/9040n/9050n:

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 V ac ± 10%

220-240 V ac ± 10%

50/60 Hz ± 2 Hz

Minimum recommended current capacity = 15 A dedicated circuit

Minimum recommended current capacity =

6.5 A dedicated circuit

printing = 1,040 W standby = 265 W PowerSave 1 = 40 W PowerSave 2 = 25 W off = 0 W

printing = 995 W standby = 265 W PowerSave 1 = 40 W PowerSave 2 = 25 W off = 0.2 W

printing = 3,550.36 BTU/hr standby = 904.71 BTU/hr PowerSave 1 = 136.56 BTU/hr PowerSave 2 = 85.35 BTU/hr off = 0 BTU/hr

printing = 3,396.93 BTU/hr standby = 904.71 BTU/hr PowerSave 1 = 136.56 BTU/hr PowerSave 2 = 85.35 BTU/hr off = 0.69 BTU/hr

Product specifications 7

Page 24

Table 6. Electrical specifications (HP LaserJet 9040)

Volts Frequency Ampres Watts (W) (typical) Therma l units per hour

(BTu/hr)

100-127 V ac ± 10%

220-240 V ac ± 10%

50/60 Hz ± 2 Hz

Minimum recommended current capacity = 12 A dedicated circuit

Minimum recommended current capacity =

5.3 A dedicated circuit

printing = 900 W standby = 200W PowerSave 1 = 158 W PowerSave 2 = 21 W off = 0.5 W

printing = 900 W standby = 200 W PowerSave 1 = 40 W PowerSave 2 = 21 W off = 0.5 W

printing = 3,550.36 BTu/hr standby = 904.71 BTu/hr PowerSave 1 = 136.56 BTu/hr PowerSave 2 = 85.35 BTu/hr off = 0 BTu/hr

printing = 3,396.93 BTu/hr standby = 904.71 BTu/hr PowerSave 1 = 136.56 BTu/hr PowerSave 2 = 85.35 BTu/hr off = 0.69 BTu/hr

Table 7. Electrical specifications (HP LaserJet 9050)

Volts Frequency Ampres Watts (W) (typical) Therma l units per hour

(BTu/hr)

100-127 V ac ± 10%

220-240 V ac ± 10%

50/60 Hz ± 2 Hz

Minimum recommended current capacity = 12 A dedicated circuit

Minimum recommended current capacity =

6.5 A dedicated circuit

printing = 1,000 W standby = 200 W PowerSave 1 = 158 W PowerSave 2 = 21 W off = 0.5 W

printing = 1,000 W standby = 200 W PowerSave 1 = 40 W PowerSave 2 = 21 W off = 0.5 W

printing = 3,550.36 BTu/hr standby = 904.71 BTu/hr PowerSave 1 = 136.56 BTu/hr PowerSave 2 = 85.35 BTu/hr off = 0 BTu/hr

printing = 3,396.93 BTu/hr standby = 904.71 BTu/hr PowerSave 1 = 136.56 BTu/hr PowerSave 2 = 85.35 BTu/hr off = 0.69 BTu/hr

Note Electrical specifications might change. See www.hp.com/go/lj9000 or www.hp.com/go/lj9050_lj9040

for the current information.

WARNING! 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

°F to 91°F)

(50

Relative humidity 10% to 80% Storage temperature -40ºF to +60ºF Storage humidity 15% to 90%

8 Chapter 1 Product information

Page 25

Table 9. Acoustical specifications

Declared per ISO 9296

Sound power level

Printing (50 ppm) L

= 7.2 Bels (A) [72 dB(A)]

WAd

HP LaserJet 9050

= 5.6 Bels (A) [56 dB(A)]

WAd

= 7.0 Bels (A) [dB(A)]

WAd

= 5.6 Bels (A) [dB(A)]

WAd

= 56 dB(A)

pAm

Sound power level

HP LaserJet 9040

Sound pressure level

Ready L

Printing (40 ppm) L

Ready L

Printing (50 ppm) L (Bystander position) HP LaserJet 9050

Sound pressure level (Bystander position)

Ready L

Printing (40 ppm) L

= 40 dB(A)

pAm

= 54 dB(A)

pAm

HP LaserJet 9040

Ready L

= 39 dB(A)

pAm

1.Values current as of October 16, 2003. Values subject to change, see

lj9050_lj9040 for current information.

2.Values current as of October 24, 2004. Values subject to change, see

lj9050_lj9040 for current information.

3.Values current as of October 16, 2003. Values subject to change, see

lj9050_lj9040 for current information.

4.Values current as of October 24, 2004. Values subject to change, see

lj9050_lj9040 for current information.

www.hp .com/support/

www.hp.com/support/

www.hp .com/support/

www.hp.com/support/

Product specifications 9

Page 26

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

Tr ay 2

Tr ay 3

Optional tray 4

Figure 2. External view of the printer and accessories

Standard output bi n (face-down bin)

Optional tray 1

Right door

Vertical transfer door

10 Chapter 1 Product information

Page 27

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

Page 28

Optional accessories

Multifunction finisher

3,000-sheet stapler/stacker

3,000-sheet stacker

Figure 5. Optional accessories

8-bin mailbox (HP LaserJet 9040/9050 Series printer only)

Tray 4

Tray 1

Duplex printing accessory (duplexer)

HP Fast InfraRed Connect (HP LaserJet 9000 Series printer only

12 Chapter 1 Product information

Page 29

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

Page 30

Service approach

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

z isolate the problem to the major system (the host computer, the network and/or server, or the

printer system)

z determine whether the problem is located in one of the paper-handling devices or in the printer

engine

z troubleshoot 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

z HPS (for U. S.)

(800) 752-0900

z HPS (for Canada)

(800) 387-3867

z HPS (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

Page 31

2 Product requirements

Chapter contents

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

Chapter contents 15

Page 32

Site requirements

Operating environment

The electrical and environmental specifications must be maintained to ensure the proper operation of this printer. See "Product specifications" in chapter 1. Consider the following points before installing the printer:

z Install in a well-ventilated, dust-free area. z Install on a level, flat surface that can support the printer size and weight. Make sure that all four

printer feet are level. Do not install on carpet or on other soft surfaces.

z Make sure that an adequate power-supply circuitry is available. See "Product specifications" in

chapter 1.

z Install where temperature and humidity are stable, and where no abrupt changes occur (away

from water sources, humidifiers, air conditioners, refrigerators, or other major appliances). See "Product specifications" in chapter 1.

z Install away from direct sunlight, areas that experience vibration, open flames, ultrasonic heaters,

ammonia fumes, or magnets and devices that emit a magnetic field. If the printer is placed near a window, make sure that the window has a curtain or blind to block direct sunlight.

z Maintain enough space around the printer for proper access and ventilation. See "Space

requirements" on page 17.

16 Chapter 2 Product requirements

Page 33

Space requirements

353 mm (13.9 inches)

638 mm (25.1 inches)

633 mm (24.9 inches)

(17.8 inches)

368 mm

Figure 6. Space requirements for the base model

600 mm (23.6 inches)

Site requirements 17

Page 34

2,591 mm (102 inc hes)

2,591 mm (102 inches)

1,001 mm (39.4 inches)

1,036 mm (40.8 inches)

Figure 7. Space requirements with a finishing device (3,000-sheet stapler/stacker shown) and tray 4

installed

18 Chapter 2 Product requirements

Page 35

Media specifications

Use the following information to help the user select and use print media.

Note Before purchasing large quantities of print media, make sure that it meets the requirements that are

specified in this service manual and in the HP LaserJet Printer Family Print Media Guide. See "Media input/output options" on page 25. Always test print media before buying large quantities.

Note Hewlett-Packard neither warrants nor recommends the use of a particular brand of paper or print media.

Media properties are subject to manufacturing changes, and HP has no control over such changes. Although testing media helps to characterize the manufacturer’s performance and process quality, the customer assumes all responsibility for the quality and performance of media.

Guidelines for selecting print media

For best results, use conventional 75-g/m2 (20-lb) paper. Make sure that the paper is of good quality, and free of cuts, nicks, tears, spots, loose particles, dust, wrinkles, voids, and curled or bent edges.

Note Some print media might meet all of the guidelines in this manual and still not produce satisfactory

results. This might be the result of improper handling, unacceptable temperature and humidity levels, or other variables over which HP has no control.

If you are unsure what type of paper you are loading (such as bond or recycled), check the label on the package of paper.

For information about measuring caliper, see "Media input/output options" on page 25.

Hint Do not purchase more media than can be easily used in a short time (about 3 months). Media that is

stored for long periods experiences heat and moisture extremes that can be damaging. Planning is important to prevent damage to a large supply of media.

Special media specifications

The following sections describe specifications for special media that can be used in these printers.

Envelope specifications

Successful printing on envelopes depends upon the quality of the envelopes. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. When selecting envelopes, consider the following components:

z Construction—Prior to printing, envelopes should lie flat with less than 10 mm (0.39 inch) curl,

and have well-constructed seams.

z Condition—Envelopes should not be wrinkled, nicked, or otherwise damaged. z Temp e r a t ure—Envelopes should be compatible with the heat and pressure produced by the

printer.

Media specifications 19

Page 36

Figure 8. Sample seams

Note Print envelopes from tray 1 only. Send envelopes straight through the printer, entering at tray 1 and

exiting from the face-up bin.

Note For the best print quality, position margins no closer than 15 mm (0.6 inch) from the edges of the

envelope. A void printing over the area where the envelope seams meet.

Envelopes that have adhesive strips or flaps

Check to make sure that envelopes that have peel-off adhesive strips, or more than one flap that folds over to seal, use adhesives that are compatible with the heat and pressure in the printer. The extra flaps and strips might cause wrinkling, creasing, or jams, and can even damage the fuser.

Label specifications

CAUTION To avoid damaging the printer, use only labels that are recommended for laser printers. Never print on

the same sheet of labels more than once and never print on a partial sheet of labels. When selecting labels, consider the quality of each component:

z Adhesives—The adhesive material should be stable at 190°C (374°F), which is the printer

fusing temperature.

z Arrangement—Do not use labels that have exposed backing between them. Labels can peel off

sheets with spaces between the labels, causing jams. See figure 9 for acceptable arrangement schemes.

z Curl—Prior to printing, labels must lie flat with no more than 10 mm (0.39 inch) of curl in any

direction.

z Condition—Do not use labels that have wrinkles, bubbles, or other indications of separation.

Note Print labels from tray 1 only. Send labels straight through the printer, entering at tray 1 and exiting from

the face-up bin.

20 Chapter 2 Product requirements

Page 37

Figure 9. Adhesive labels

Transparency specifications

To avoid damaging the printer, use only transparencies that are recommended for use in laser printers.

z Construction—Prior to printing, transparencies should lie flat with less than 10 mm (0.39 inch)

curl.

z Condition—Transparencies should not be wrinkled, nicked, or otherwise damaged. z Temp e r a t ure—Transparencies should be stable at 190°C (374°F), which is the printer fusing

temperature.

Note If problems occur while printing transparencies, use tray 1. Send transparencies straight through the

printer, entering at tray 1 and exiting from the face-up bin.

CAUTION Transparencies that are used in the printer must be able to withstand 190°C (374°F), the printer fusing

temperature.

Preprinted forms and special letterhead

Many preprinted forms and special letterhead papers perform well in HP LaserJet printers. However, these papers undergo processes that alter their original characteristics, and care must be taken to ensure that they conform to HP specifications. All special papers should be wrapped in moistureproof wrapping when they are purchased from the paper converter or printing house.

Forms and letterhead must be printed with inks that conform to the following specifications:

z Only use ink that is heat-resistant, and that will not melt, scorch, or release hazardous emissions

when subjected to 200°C (392°F) for 0.1 second.

z Inks must have resistance to silicon oils, and must not be affected by resin components in toner. z Inks must not be flammable. z Inks must not “offset” (transfer from the printed paper onto the printer, contaminating internal

printer components). The principle cause of offset is ink that is not fully dried or that cannot withstand the printer fusing temperature.

Note Do not use low-temperature inks (the kind that is used in thermography).

Media specifications 21

Page 38

Embossed media

Embossed media is not recommended for use in HP LaserJet printers. Media is embossed by stamping an image into the media by compressing the media fibers together at approximately 200°C (392°F), and sometimes by applying a thin metal foil to the surface. The printer fusing process can loosen the foil, and loose foil can interfere with the mechanical and electronic operation of the printer.

Embossed paper, with or without foil, can also cause multifeed jams. Multiple embossed print media sheets tend to stick to one another.

Media that contains cutouts or perforations

Avoid media that contains cutouts or perforations for these reasons:

z Cut fibers absorb more moisture and can increase waviness and media curl. This decreases the

print quality near the cutout or perforated area.

z Cutting knives leave a sharp edge on the cutout or perforation. If the sharp edge is facing the

print cartridge drum during printing, it can scratch the drum surface.

z If printing occurs over a cutout hole, the transfer roller is contaminated with unused toner,

creating light streaks on the paper.

Chemically treated media

Coatings such as lacquers, polymers, laminations, or other chemicals protect the paper, but can cause problems in the fuser and transfer areas of HP LaserJet printers. The surface resistivity and moisture content can be greatly altered, resulting in print-quality problems. Hard surface coatings increase wear on the rollers and media guides. All chemically treated media must meet HP specifications for fusing compatibility.

Synthetic media

Synthetic media (those manufactured from man-made fibers) do not perform as well as bond media in any printer, especially HP LaserJet printers. All synthetic media must meet HP specifications, especially for caliper and fusing compatibility.

Coated media

Do not use coated media. Most coated media does not meet the specifications for fusing compatibility and other specifications for HP LaserJet printers.

Other special media

z Odd sizes: check minimum and maximum supported sizes in chapter 2. z Carbonless media: carbonless media (NCR) is not supported by HP LaserJet printers. z Recycled media: choose recycled media that meets Hewlett-Packard specifications. Note that

recycled media might not be as bright as indicated in the specifications. HP recommends that recycled media contain no more than 5% groundwood. See "Paper weight equivalence table" on page 23.

Storing print media

Ideally, the printing and media storage environment should be at or near room temperature, and should not be too dry or too humid. Remember that paper is hygroscopic; it absorbs and loses moisture rapidly.

Heat works with humidity to damage paper. Heat causes the moisture in paper to evaporate, while cold causes it to condense on the sheets. Heating systems and air conditioners remove most of the humidity from a room. As a package is opened and used the paper is used, it loses moisture, causing

22 Chapter 2 Product requirements

Page 39

streaks and smudging. Humid weather or water coolers can cause the humidity in a room to increase. As a package of paper is opened and used, it absorbs any excess moisture, causing light print and dropouts. Also, as paper loses and gains moisture, it can distort. This can cause jams.

Therefore, print-media storage and handling are as important as the paper-making process itself. Media storage environmental conditions directly affect the feed operation.

Customers should not purchase more media than can easily be used in a short time (about three months). Media that is stored for long periods might experience heat and moisture extremes, which can cause damage. Planning is important to prevent damage to a large supply of media.

Unopened paper in sealed packages can remain stable for several months before use. Opened packages of paper have more potential for environmental damage, especially if they are not wrapped with a moisture-proof barrie r.

The media storage environment should be properly maintained to ensure optimum printer performance. The required condition is 20°C to 24°C (68°F to 75°F), with a relative humidity of 45% to 55%. The following guidelines should be helpful when evaluating the paper-storage environment:

z Paper should be stored at or near room temperature. z The air should not be too dry or too humid (because of the hygroscopic properties of paper). z The best way to store an opened package of paper is to rewrap it tightly in its moisture-proof

wrapping. If the printer environment is subject to extremes, unwrap only the amount of paper to be used during the day's operation to prevent unwanted moisture changes.

Envelope storage

Proper storage of envelopes contributes to good print quality. Env elopes should be stored flat. If air is trapped in an envelope, and creates an air bubble, then the envelope might wrinkle during printing.

Paper weight equivalence table

Use this table to determine approximate equivalent points in weight specifications other than U.S. bond weight. For example, to determine the equivalent of 20-lb U.S. bond-weight paper in U.S. coverweight paper, locate the bond weight (in row 3, second column) and scan across the row to the cover weight (in the fourth column). The equivalent is 28 lb. Shaded areas indicate a standard weight for that grade.

Table 10. Paper weight equivalence

U.S. postcard thickness (mm)

U.S. bond weight (lb)

U.S. text/ book weight (lb)

U.S. cover weight (lb)

U.S. bristol weight (lb)

U.S. index weight (lb)

U.S. tag weight (lb)

Europe metric weight

(g/m

17 43 24 29 35 39 64 64 20 50 28 34 42 46 75 75 21 54 30 36 44 49 80 80 22 56 31 38 46 51 81 24 60 33 41 50 55 90 90 27 68 37 45 55 61 100 100 28 70 39 49 58 65 105 105

Japan metric weight

)

(g/m2)

32 80 44 55 67 74 120 120 34 86 47 58 71 79 128

128

36 90 50 62 75 83 135 135

0.18 39 100 55 67 82 91 148 148

0.19 42 107 58 72 87 97 157

157

0.20 43 110 60 74 90 100 163 163

Media specifications 23

Page 40

Table 10. Paper weight equivalence

U.S. postcard thickness (mm)

U.S. bond weight (lb)

U.S. text/ book weight (lb)

U.S. cover weight (lb)

U.S. bristol weight (lb)

U.S. index weight (lb)

U.S. tag weight (lb)

0.23 47 119 65 80 97 108 176 176 53 134 74 90 110 122 199 199 54 137 75 93 113 58 146

80 98 120 133 216 216

125 203 203

65 165 90 111 135 150 244 244 66 169 92 114 138 154 67 171 94 115

140 155 253 253 70 178 98 120 146 162 264 264 72 183

100 123 150 166 271 271

Note The U.S. postcard measurements are approximate. Use for reference only.

Europe metric weight

(g/m

Japan metric weight

)

(g/m2)

250 250

24 Chapter 2 Product requirements

Page 41

Media input/output options

Trays, bins, and paper handling

The base-model printer comes with two built-in 500-sheet trays (tray 2 and tray 3). Tray 1 and tray 4 can be added to the printer. Special media (envelopes, labels) should only be loaded into tray 1. The printer comes with face-up and face-down bins, and a 3,000-sheet stapler/stacker, 3,000-sheet stacker, or multifunction finisher, or 8-bin mailbox for the HP LaserJet 9040/9050 Series printers, can be installed.

Fa c e - up bi n

3,000-sheet st apler/ stacker, 3,000-sheet stack er , multifu nction finisher, or 8-bin mailbox

Tr ay 2

Tr ay 3

Tr ay 4

Figure 10. Media trays, bins, and paper handling

CAUTION Using print media that does not meet HP specifications might cause problems for the printer, requiring

repair. Such repair is not covered by the Hewlett-Packard warranty or service agreements.

Standard output bin (Face-down bin)

Tr ay 1

The HP LaserJet 9000 Series printers and HP LaserJet 9040/9050 Series printers accept a variety of media, such as cut-sheet paper (including up to 100% recycled fiber-content paper), envelopes, labels, transparencies, and custom-size paper. Properties such as weight, composition, grain, and moisture content are important factors affecting printer performance and output quality. Media that does not meet the guidelines outlined in this manual and in the print media guide can cause the following problems:

z poor print quality z increased jams z premature wear on the printer, requiring repair

Media input/output options 25

Page 42

Supported sizes of paper for input and output

Note For more information on an optional HP output device, see the user guide that came with the product.

T ray or Bin Capacity Paper Weight

Optional tray 1 Up to

100 sheets

Up to 10 envelopes

Maximum stack height f or transparencies: 10 mm (0.4 inch)

Trays 2 and 3 Up to

500 sheets

Standard detectab le sizes: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, 11 x 17, JIS B5, JIS B4, JPostD, Custom sizes: Minimum: 98x 191 mm (3.9 x 7.5 inches) Maximum: 312 x 470 mm (12.3 x 18.4 inches)

Envelope sizes: Commercial #10, C5, DL, Monarch, B5

Transparencies:

0.12 to 0.13 mm thick (4.7 to 5.5 mils thick)

Note

Print on envelopes, transparencies, and labels from optional tray 1 only.

Standard detectab le sizes: Letter , Letter-R, Legal, Ex ecutiv e, ISO A3, ISO A4-R, ISO A5, JIS B4, JIS B5, 11 x 17 Custom sizes: Minimum: 148x 210 mm (5.8 x 8.3 inches) Maximum: 297 x 431 mm (11.7 x 17 inches)

64 to 216 g/m (17- to 58-lb bond) Two-sided printing: 64 to 199 g/m2 (1-7 to 53lb bond)

64 to 199 g/m 53-lb bond)

(17- to

Optional tray4 Up to

Standard top bin

26 Chapter 2 Product requirements

2,000 sheets

Up to 500 sheets

Up to 50 transparencies

Standard detectab le sizes: Letter, Legal, Executive, ISO A3, ISO A4, 11 x 17, JIS B4, JIS B5 Standard undetectab le sizes: 8K, 16K, JIS Executive, 8.5 x 13 (215 x 330 mm) Custom sizes: Minimum: 182x 210 mm (7.2 x 8.3 inches) Maximum: 297 x 431 mm (11.7 x 17 inches)

Standard sizes: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, 11 x 17, JIS B5, JIS B4, JPostD, Monarch, 8K, 16K Custom sizes Custom types: Transparencies

64 to 199 g/m 53-lb bond)

(17- to

Page 43

T ray or Bin Capacity Paper Weight

Left output bin Up to 100

sheets Up to 10

transparencies

Duplex printing accessory

Optional 3,000-sheet stacker

Up to 3,000 sheets of Letter or A4

Up to 1,500 sheets of A3 or 11 x 17

Standard sizes: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, 11 x 17, JIS B5, JIS B4, JPostD, Monarch, 8K, 16K Custom sizes Custom types: Envelopes, labels

Standard detectab le sizes: Letter , Letter-R, Legal, Ex ecutiv e, ISO A3, ISO A4, ISO A4-R, 11 x 17, JIS B4, JIS B5 Standard undetectab le sizes: 8K, 16K Custom sizes Custom types: Duplexing is not supported for envelopes, labels, or transparencies.

Standard sizes for lower bin: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, 11 x 17, JIS B5, JIS B4, 8K, 16K

Standard sizes for upper bin: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, 11 x 17, JIS B5, JIS B4, JPostD, Monarch, 8K, 16K Custom sizes Custom types: Envelopes, labels, transparencies, heavy paper

64 to 216 g/m

(17- to

58-lb bond)

64 to 199 g/m

(17- to

53-lb bond)

64 to 199 g/m

(17- to

53-lb bond) in lower bin

64 to 216 g/m2 (17- to 58-lb bond) in upper bin

Optional 3,000-sheet stacker/stapler

Up to 3,000 sheets of Letter or A4

Up to 1,500 sheets of A3 or 11 x 17

Up to 50 sheets stapled

Standard sizes for lower bin: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, 11 x 17, JIS B5, JIS B4, 8K, 16K

64 to 199 g/m

(17 to

53 lb bond) in lower bin

64 to 216 g/m2 (17- to 58-lb bond) in upper bin

Media input/output options 27

Page 44

T ray or Bin Capacity Paper Weight

Optional multifunction finisher

Optional 8-bin mailbox (HP LaserJet 9040/9050 Series printer s only)

Up to 1,000 sheets of stacked 20 lb bond for Letter and A4 (up to 50 sheets stapled), and 500 sheets of stacked 20-lb bond for A3 and 11 x 17 (up to 25 sheets stapled)

Up to 40 booklets of 5 sheets, stacked; or 20 booklets of 10, sheets stacked

Up to 250 sheets of A4 or Letter in each output bin

Standard sizes: Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, JIS B4, JIS B5, 11 x 17 Custom sizes: Minimum: 98x 191 mm (3.9 x 7.5 inches) Maximum: 312 x 470 mm (12.3 x 18.5 inches) Custom types: Envelopes, labels, transparencies, heavy paper

Standard sizes for upper bin Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, JIS B4, JIS B5, 11 x 17 Custom sizes Minimum: 148x 210 mm (5.8 x 8.3 inches) Maximum: 297 x 432 mm (11.7 x 17 inches) Standard sizes for 8 mailbox bins Letter, Legal, Executive, ISO A3, ISO A4, ISO A5, JIS B4, JIS B5, 11 x 17 Custom sizes Minimum: 148x 210 mm (5.8 x 8.3 inches) Maximum: 297 x 432 mm (11.7 x 17 inches)

64 to 199 g/m

(17- to 53-lb bond) in lower booklet bin 64 to 216 g/m

(17- to 58-lb bond) in upper bin

60 to 135 g/m

(16- to 36-lb bond) in 8 mailbox bins

64 to 216 g/m

(18- to 58-lb bond) in upper bin

28 Chapter 2 Product requirements

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3 Product configuration

Chapter contents

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

Control-panel menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Using a menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Retrieve job menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Paper-handling menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

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

HP Web Jetadmin 6.1 for a single printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Chapter contents 29

Page 46

Using the control panel

The control pan el inc lude s thre e LED i ndica tor li ghts, four navigati on buttons, a help button, a message-clear button, a pause/resume button (9000 Series) or a menu button (9040/9050 Series), a cancel-job button (9000 Series) or a stop button (9040/9050 Series), a numeric keypad, and a graphical display that c an show up t o four lines of text.

The control panel graphical display provides both status and error messages by using distinct text and codes.

GRAPHICAL DISPLAY BACK UP SELECT NUMERIC KEYPAD

PAUSE/RESUME (FOR 9000 SERIES)

ENU

M (FOR 9040/9050 SERIES)

CANCEL JOB (

FOR 9000 SERIES)

TOP

S (FOR 9040/9050

ERIES)

READY DATA ATTENTION HELP CLEAR

Figure 11. Control-panel layout

DOWN

30 Chapter 3 Product configuration

Page 47

Control-panel buttons

Table 11. Control-panel butto n functions

Button Function

ACK ARROW)

(UP ARROW)

(SELECT)

(CLEAR)

(DOWN ARROW)

(HELP)

CANCEL JOB

-OR-

TOP

PAUSE/RESUME

-OR-

z Backs up one step from a selection or a 10-key entry. z Navigates to the previous item in the list. z Saves the selected value for that item. An asterisk ( * ) appears next to the

selection, indicating that it is the new default. Default settings remain when the printer is switched off or is reset (unless you reset all factory defaults from the Resets menu).

z Prints one of the printer information pages from the control panel. z Returns a numeric entry to its previous value. z Navigates to the next item in the list. z Provides help on about the message that appears on the control-panel display.

Cancels the current print job. The time it takes to cancel depends on the size of

the print job. Press the button only once.

z Opens the STOP menu which contains the following options:

• Cancel the current print job.

• Pause the printer.

• Resume printing if the printer was paused.

Returns to the ready or busy state from menus or online help.

z Toggles between pause and resume.

ENU

NUMERIC KEYPAD

z Opens or exits the menus.

Specifies numeric values.

Note The HP LaserJet 9000 and the HP LaserJet 9040/9050 Series printers are similar products. The

behavior or feature is common in both printers unless noted otherwise.

Using the control panel 31

Page 48

Numeric keypad commands

The numeric keypad is used to specify numeric values. The numeric keypad provides a shortcut key to items in the menus if the device is in an idle state. Pressing the numbers that correspond with the position of the menu item opens that menu. For example, to print a configuration page, the customer can press 22. The first 2 represents the Information menu, which is the second menu. The second 2 represents the Print configuration page command, which is the second item in the Informationmenu list.

The menus change dynamically . The Configure de vice menu has flexible menus that can be used to configure accessories depending on what accessories are available, so the number sequence might not be the same for all devices. Pressing a number should correspond to the same sequence that is used when navigating to that item in the list and pressing .

The exception to this approach is when the display contains a list of values. In this case, typing the number moves to that item in the list but does not select the item. This is the same for continuous values that can be specified by using the numeric keypad. For example, to specify the number of copies, the customer presses the appropriate number and then presses .

The following table outlines what happens in certain printer states when a button on the numeric keypad is pressed.

Table 12. Printer state and numeric key effect

PowerSave Idle/pause Continuable

error

Exit the PowerSave mode.

Open a menu. Each menu has an assigned number.

No effect. No effect. No effect. Specify the

Data Processing

job

In menus In online

information

No effect.

numeric value.

32 Chapter 3 Product configuration

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Settings and defaults

The printer bases most printing decisions on temporary settings or on factory (permanent) defaults.

Note Settings that you send from software programs override default settings.

Tempor ary settings are the values that are set through a software program for the current print job. Temporary settings remain in effect until the current print job is finished.

Control-panel defaults are the values that are specified by selecting a control-panel item and pressing . An asterisk ( * ) next to the item name indicates that it is now the default. The printer retains default settings even when power is turned off.

Factory defaults are preset at the factory and are the permanent default values for each menu item.

Setting the display language

Method 1

1 Press to open the menus. 2 Press 3 Press 4 Press 5 Press

Method 2

1 Press and hold while turning on the printer. 2 Hold until all three LED indicator lights are illuminated at the same time. 3 Press

Note For Japanese, Turkish, Czech, Russian, Hungar i an, and Polish, the language selectio n chan ges the

default symbol set for the specific language. For all other languages, the default symbol set is PC-8.

or to scroll to CONFIGURE DEVICE, and then press . or to scroll to SYSTEM SETUP, and then press . or to scroll to LANGUAGE, and then press . or to scroll to the appropriate language, and then press .

or to scroll to the desired language, and then press .

Setting the tray registration

1 Press to open the menus. 2 Press 3 Press 4 Press

or to scroll to CONFIGURE DEVICE, and then press . or to scroll to PRINT QUALITY, and then press . or to scroll to SET REGISTRATION, and then press .

You can select a tray by specifying a SOURCE. The default SOURCE is tray 2. If you want to set the registration for tray 2, go to step 7. Otherwise, proceed to the next step.

5 Press 6 Press

display returns to the SET REGISTRATION menu.

7 Press 8 Follow the instructions on the printed page.

or to scroll to SOURCE, and then press . or to select a tray, and then press . After selecting a tray, the control-panel

or to scroll to PRINT TEST PAGE, and then press .

Settings and defaults 33

Page 50

Figure 12. Registration page (1 of 2)

34 Chapter 3 Product configuration

Page 51

Figure 13. Registration page (2 of 2)

Settings and defaults 35

Page 52

Printer driver information

When you change a setting from the printer control panel, the new setting becomes the default value. You can override any control-panel setting from the printer driver and through most software programs.

36 Chapter 3 Product configuration

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Control-panel menus

Press or to cycle through the control-panel menus. Each menu is described in a separate table in this section. Menu items appear only if their associated option is installed, or their functions are activated.

All menus and their associated items are available when the printer is online. In menu mode, if no buttons are pressed for approximately 30 seconds, the system automatically returns to the top level and displays either an existing error or one of the following messages:

z READY, if the printer is online z OFFLINE, if the printer is offline

Note Items appear only when the associated optional accessory is installed or the associated function is

activated. Printer-driver and software commands override the printer control-panel settings. From the control panel, you can print a menu map that shows the current printer configuration.

Additional menu items can appear on the control panel, depending on the optional accessories that are currently installed in the printer. The following is a list of menus that are available from the control panel, and where to find information about each menu.

z "Retrieve job menu" on page 38 z "Information menu" on page 38 z "Paper-handling menu" on page 39 z "System setup submenu" on page 46

Using a menu map

To see the current settings for the menus and items that are available on the control panel, print a control-panel menu map. Values that appear with an ( * ) next to them are the currently selected values for a setting. Many of these values can be overridden from the print driver or a software program. You might want to store the menu map near the printer for reference.

The contents of the menu map varies, depending on the optional accessories that are installed in the printer.

Select an item from the menu map

1 Press to open the menus. 2 Press 3 Press

or to scroll to the required menu, and then press . or to scroll to the page desired, and then press .

Control-panel menus 37

Page 54

Retrieve job menu

Note If no private, stored, quick copy, or proof and hold jobs are stored on the printer hard disk or in RAM,

the message NO STORED JOB appears when the menu is selected.

1 A list of user names appears. 2 Select a user name, and a list of jobs that are stored for that user appears. 3 Select a job name, and print or delete that job. If a job requires a PIN before it can be printed or

deleted, appears next to the PRINT or DELETE command and a PIN must be typed. If a job requires a PIN to delete, appears next to the DELETE command and a PIN must be provided.

4 If you select PRINT, the printer prompts you to specify the number of copies to print (1 to 32,000).

Information menu

To print an information page, scroll to the information page that you want and press .

Item Explanation

PRINT MENU MAP Generates a menu map that shows the layout and current settings of the

control-menu items. The printer will back up one screen to SET FRONT TO BACK when the page is completed.

PRINT CONFIGURATION

PRINT SUPPLIES STATUS PAGE

PRINT USAGE PAGE Generates a page that contains information that could be used for cost

PRINT FILE DIRECTORY

PRINT PCL FONT LIST

PRINT PS FONT LIST

Generates a page detailing the current configuration of the printer. The printer will return to the online READY state when the page is completed.

Generates a page that sho ws the n umber of pages remainin g f or each sup ply in the printer. The printer will return to the online READY state when the page is completed.

accounting. This item is only available if a hard disk is inst alled. The printer will return to the online READY state when the page is completed.

Generates a directo ry page containing in formation f or all in stalled mas s-storage devices. The printer will return to the online READY state when the page is completed.

Generates a typeface list of all PCL fonts that are available on the printer. The printer will return to the online READY state when the page is completed.

Generates a typeface list of all PS fonts that are available on the printer. The printer will return to the online READY state when the page is completed.

38 Chapter 3 Product configuration

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Paper-handling menu

When paper-handling settings are correctly configured through the control panel, you can print by selecting the type and size of paper from the printer driver or software program.

Some items in this menu (such as duplex and manual feed) are available from specific software programs, or from the printer driver (if the appropriate driver is installed). Printer-driver and softwareprogram settings override control-panel settings.

Item Values Explanation

TRAY 1=FIRST

(HP LaserJet 90 00 only)

TRAY <N> SIZE=LETTER

FIRST

CASSETTE

ANY SIZE LETTER LETTER-ROTATED LEGAL A4 A4-ROTATED EXECUTIVE EXECUTIVE(JIS) A3 A5 B4(JIS) B5(JIS) 8K 16K

8.5 X 13 11 X 17 CUSTOM ANY CUSTOM

FIRST: The user can specify if media in the tray should

be used. CASSETTE: If set to CASSETTE, the tra y mus t be configu red

with a size and type, but it then functions like all of the other trays.

The user can set the pap er s ize for trays 2 and 3 and f or optional tray 4 (if installed) when the custom switch is in the CUSTOM position. The size is detected if the switch is in the STANDARD position. Substitute the tray number for

<N>.

TRAY <N> TYPE=PLAIN

ANY TYPE PLAIN PREPRINTED LETTERHEAD TRANSPARENCY PREPUNCHED LABELS BOND RECYCLED COLOR CARDSTOCK>163 ROUGH 90-105 G/M2

ENVELOPE *

The user can specify the type of media that is loaded in each tray. Substitute the tray number for <N>. *ENVELOPE appears for tray 1 only.

Paper-handling menu 39

Page 56

Item Values Explanation

FUSER MODES

(HP LaserJet 90 00 only)

List of print-media types

Configure the fuser mode that is associated with each media type. The default value for each paper type is AUTO. The fuser mode can only be changed from this menu option on the control panel.

AUTO: Utilizes the optimum mode for that media type. NORMAL: Normal temperature; prints at 50 pages per

minute (ppm).

LOW: Low temperature; prints at 50 ppm. HIGH1: Raises the temperature, prints at 50ppm. HIGH2: Raises the temperature; prints at 32ppm. SPECIAL: Use this mode to print at normal speeds with a

40-second delay added to the beginning of the next job. After each 400 pages are printed, the first page of that job is printed at a slower speed in order to clean the fuser. No defects should be noticeable on the printed page. This is not a preferred setting.

CAUTION

If you change the fuser mode to HIGH1 or HIGH2, be sure to change it back to the default when you are done printing. Setting a paper type to HIGH1 or HIGH2 might shorten the life of som e con sumab les , s uch as th e fus er, and might cause other failures or jams.

40 Chapter 3 Product configuration

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Configure device menu

This menu contains all of the administrative functions.

Printing submenu

Some items in this menu are available from a software program, or from the printer driver (if the appropriate driver is installed). Printer-driver and software-program settings override control-panel settings.

Item Values Explanation

COPIES=1 1 to 32,000 Set the default number of copies by selecting any number

from 1 to 32,000. Use the numeric keypad to select the number of copies.

Note

It is best to set the numbe r o f copies from the printer driv er or software program. (Driver and software settings override control-panel settings.)

DEFAULT PAPER SIZE= LETTER

LETTER LEGAL A4 EXECUTIVE 11X17 A3 B4(JIS) B5(JIS) CUSTOM A5 LETTER ROTATED STATEMENT

8.5X13 12X18 A4 ROTATED RA3 EXECUTIVE(JIS) DPOSTCARDS(JIS) 8K 16k ENVELOPE #10 ENVELOPE MONARCH ENVELOPE C5 ENVELOPE DL ENVELOPE B5

Set the default image size for paper and envelopes. (The item name will change from paper to envelope as you scroll through the available sizes.)

DEFAULT CUSTOM PAPER SIZE

PAPER DESTINATION= STANDARD OUTPUT

UNIT OF MEASURE X DIMENSION Y DIMENSION

STANDARD OUTPUT LEFT OUTPUT BIN STANDARD TOP BIN

Allows the user to set a custom paper size for any of the installed trays. Substitute the tray number for <N>. This menu only appears when the custom switch in the selected tray is in the custom size position. The user selects the X and Y dimensions of the custom paper size by using the ruler labels in the trays.

Allows the user to configure the output bin destination. Only the installed bins appear on the menu.

Configure device menu 41

Page 58

Item Values Explanation

DUPLEX=OFF OFF

DUPLEX BINDING=LONG EDGE

OVERRIDE A4/ LETTER= NO

MANUAL FEED=OFF OFF

LONG EDGE SHORT EDGE

YES NO

This item appears only when an optional duplex printing accessory is installed. Set the value to ON to print on both sides (duplex) or OFF to print on one side (simplex) of a sheet of paper.

For more information, see the HP support flyer or go to

www.hp.com/support/lj9050_lj9040 www.hp.com/support/lj9000

Allows the user to change the binding edge for duplex printing. The menu item appears when a duplex printing accessory is installed in the printer and DUPLEX=ON.

This command is used to print on letter-size media when an A4 job is sent, but no A4-size media is loaded in the printer (or to print on A4-size media when a letter job is sent, but no letter media is loaded in the printer).

Use this item to set the printer to feed the paper manually from optional tray 1, rather than automatically from a tray. When MANUAL FEED=ON and optional tray 1 is empty, the printer goes offline when it receives a print job. The message MANUALLY FEED [PAPER SIZE] appears on the control-panel display.

EDGE TO EDGE OVERRIDE=NO

COURIER FONT=REGULAR

WIDE A4=NO YES

PRINT PS ERRORS=OFF

PRINT PDF ERRORS= OFF

NO YES

REGULAR DARK

ON OFF

OFF ON

Turn the edge-to-edge mode on or off f or all print jobs. This mode can be overridden inside a print job by using an edge-to-edge PJL variable.

Select the version of Courier font to use: REGULAR: The internal Courier font that is available on the HP LaserJet 4 Series printers. DARK: The internal Courier font that is available on the HP LaserJet III Series printers. Both fonts are not available at the same time.

The Wide A4 setting changes the number of characters that can be printed on a single line of A4 media. YES: Up to 80 10-pitch characters can be printed on one line. NO: Up to 78 10-pitch characters can be printed on one line.

Select ON to print the PS error page when PS errors occur.

Select ON to print the PDF error page when PDF errors occur.

PCL submenu

Items in the PCL submenu affect PCL tasks.

42 Chapter 3 Product configuration

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Item Values Explanation

FORM LENGTH=60 5 to 128 Sets vertical spacing from 5 to 128 lines for the default

paper size. Spec ify the value by usi ng th e n um eric keypad.

ORIENTATION= PORTRAIT

PORTRAIT LANDSCAPE

Allows the user to select the default page orientation.

Note

It is best to set the page orientation from the printer driver or software prog ram. (Driv er and softw are settings o verride control-panel settings.)

FONT SOURCE=INTERNAL

FONT NUMBER=0 0-999 The printer assigns a number to each font and lists the

FONT PITCH=10.00 0.44 to 99.99 Using the numeric keypad or and , specify a value.

SYMBOL SET=PC-8 Variety of

INTERNAL CARD SLOT X

available symbol sets

INTERNAL: Internal fonts. SLOT 1, 2, or 3: Fonts that are stored in one of the three

DIMM slots.

numbers on the PCL Font List. The font number appears in the Font # column of the printout.

This item might not appear, depending on the f ont tha t yo u selected.

Select any one of several available symbol sets from the printer control panel. A symbol set is a unique grouping of all of the characters in a font. PC-8 or PC-850 is recommended for line-draw characters.

APPEND CR TO LF=NO

SUPRESS BLANK PAGES=NO

YES NO

NO YES

Select YES to append a carriage return to each line feed that is encountered in backward-compatible PCL jobs (pure text, no job control). Some environments, such as UNIX®, indicate a new line by using only the line-feed control code. This option allows the user to append the required carriage return to each line feed.

When set to YES, form feeds are ignored if the page is blank.

Configure device menu 43

Page 60

Print-quality submenu

Some items in this menu can be set with a software program, or from the driver (if the appropriate driver is installed). Driver and software settings override control-panel settings.

Item Values Explanation

SET REGISTRATION

FUSER MODES

(HP LaserJet 9040/9050 only)

PRINT TEST PAGE

SOURCE=TRAY 2

ADJUST TRAY <X>

List of media types

Shift the margin alignment to center the image on the page from top to bottom, and from left to right. You can also align the image on the front with the image printed on the back.

Configure the fus er mo de tha t is a ssoc iated with each print-med ia type. The fuser mode can only be changed from this me nu opti on on the control panel. The default value for each paper type is AUTO.

AUTO: Utilizes the optimum mode for that media type. NORMAL: Normal temperature; prints at 40/50 pages per minute

(ppm).

LOW: Low temperature; prints at 40/50 ppm. HIGH1: Raises the temperature; prints at 40/50 ppm. HIGH2: Raises the temperature; prints at 32 ppm. SPECIAL: Use this mode to print at normal speeds with a 40-

second delay added to the beginning of the next job. After each 400 pages are printed, the first page of that job is printed at a slower speed in order to clean the fuser. No defects should be noticeable on the printed page. This is not a preferred setting.

CAUTION

If you change the fuser mo de to HIGH1 or HIGH2, be sure to chan ge it back to the default when you are done printing. Setting a paper type to HIGH1 or HIGH2 might shorten the life of some consumables , s uc h a s t he fuser, an d m ig ht c au se oth er failures or jams.

RESOLUTION= FASTRES 1200

300 600 FASTRES 1200

44 Chapter 3 Product configuration

Select the resolution from the following values: 300: Produces draft print quality at maximum printer speed. 300 dpi (dots pe r inch) is recommend ed f or some bitmapp ed f onts and graphics, and for compatibility with the HP LaserJet III family of printers.

600: Produces high print quality at maximum product speed. FASTRES 1200: Produces optimum print quality (comparable to

1200 dpi) at maximum product speed.

Note

It is best to change the resolution from the driver or software program. (Driver and software settings override control-panel settings.)

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Item Values Explanation

RET=MEDIUM OFF

LIGHT MEDIUM DARK

ECONOMODE ON

OFF

TONER DENSITY=3

SMALL PAPER MODE=NORMAL

1 to 5 Lighten or darken the print on the page by changing the toner-

NORMAL SLOW

Use the printer Resolution Enhancement technology (REt) setting to produce print that contains smooth angles, curves, and edges. All print resolutions, including FastRes 1200, benefit from REt.

Note

It is best to change the REt setting from the driver or software program. (Driver and software settings override control-panel settings.)

When set to “on”, the printer prints by using a reduced amount of toner per page; how ever, the print quality of the p ag e is dr as tic al ly reduced.

density setting. The settings range from 1 (ligh t) to 5 (dark), b ut the default setting of 3 usually produces the best results.

Note

It is best to change the toner density from the driver or software program. (Driver and software settings override control-panel settings.)

When printing on narrow media, this setting slows down the printer which stabilizes the fuser temperature to minimize wrinkles.

CREATE CLEANING PAGE

PROCESS CLEANING PAGE

No value to select

Press the paper path. In order for the cleaning page to work correctly, print the page on copier-grade paper (not bond or rough paper). Follow the instructions on the cleaning page. The progress bar shows the time remaining before the process is complete.

This item appears only after a cleaning page has been generated. Press to process t he clea ning pa ge. The pro gress bar

shows the time remaining be fore the process is complet e.

to print a cleaning page (f or clea ning e xc ess toner from

Configure device menu 45

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System setup submenu

Items in this menu affect the printer function. Configure the printer according to your printing needs.

Item Values Explanation

DATE/TIME

(HP LaserJet 9040/9050 only)

JOB STORAGE LIMIT=32

JOB HELD TIMEOUT= OFF

SHOW ADDRESS=OFF

(HP LaserJet 9040/9050 only)

TRAY BEHAVIOR

(HP LaserJet 9040/9050 only)

DATE DATE FORMAT TIME TIME FORMAT

1 to 100 Specifies the number of jobs that can be sto red on the printer

OFF 1 HOUR 4 HOURS 1 DAY 1 WEEK

AUTO OFF

USE REQUESTED TRAY MANUAL FEED PROMPT PS DEFER MEDIA

Sets the date and ti me f or the printe r . The Real Time Cloc k is set to Greenwich Mean Time (GMT).

hard-disk accessory.

Sets the length of time that quick copy, proof and hold, private, and stored jobs are kept before being automatically deleted from the queue.

Sets whether or not the printer IP address appears with the Ready message. If this value is “on,” the address of the EIO card in slot 1 is shown.

Specifies the behavior of the tray by indicating which tray the printer should print from. USE REQUESTED TRAY sets the tray that the printer should print from for specified jobs. The values for this menu item are EXCLUSIVELY (default) and FIRST. MANUAL FEED PROMPT determines whether or not the product prompts the user when a job does not match a requested configured tray. The values for this menu item are ALWAYS (default) or UNLESS LOADED. PS DEFER MEDIA sets whether the paper-handling model is based on PostScript rules or HP rules. The values for this menu item are ENAB LED (default) and DISABLED.

SLEEP DELAY=90 MINUTES

POWERSAVE TIME=1 HOUR

(HP LaserJet 90 00 only)

WAKE TIME SUBMENU

(HP LaserJet 9040/9050 only)

46 Chapter 3 Product configuration

1 MINUTE 15 MINUTES 30 MINUTES 60 MINUTES 90 MINUTES 2 HOURS 4 HOURS

SETTING WAKE TIME

Set how long the printer remains idle before it enters Sleep mode. The Sleep mode minimizes the amount of power that the printer consumes when it is idle and reduces wear on the printer electronic components. When you send a print job, press a control-panel button, open a paper tray, or open the top cover, the printer automatically exits Sleep mode.

Note

Sleep turns off the back lig ht on t he d isp lay, but the display is still readable.

Sets the time that the printer automatically com es out of Sleep mode. This feature can be set for a different time for each day of the week.

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Item Values Explanation

PERSONALITY=AUTO AUTO

PCL PS PDF XHTML MIME

CLEARABLE WARNINGS= JOB

AUTO CONTINUE=ON ON

ON JOB

OFF

Select the default printer language (personality). Possible values ar e determined b y whi ch v alid languages are ins talled in the printer. Normally, you should not change the printer language (the default is AUTO). If you change it to a specific printer language, the printer does not automati cally s witch from one language to anothe r unl es s s pe ci f ic software commands are sent to the printer.

Set the amount of time that a clearable warning appears on the printer control panel. ON: Warning messages app ear o n the control panel until is pressed. JOB: Warning messa ges appear o n the control p anel unti l the end of the job from which they were generated.

Determine how the printer reacts to errors. ON: If an error prevents printing, the message appears, and the printer goes offline for 10 seconds before returning online. OFF: If an error prevents printing, the message remains on the displa y a nd the prin ter d oes no t print u ntil is pressed.

Note

To stop printing when an install ed opt ion al stapler accessory is out of staples, set AUTO CONTINUE=OFF on the control-p anel System setup menu.

CARTRIDGE LOW= CONTINUE

CARTRIDGE OUT= CONTINUE

(HP LaserJet 9040/9050 only)

JAM RECOVERY= AUTO

CONTINUE STOP

STOP CONTINUE

AUTO ON OFF

Determine how the printer functions when toner is low. The CARTRIDGE LOW message first appears when the print cartridge is almost out of toner. (About 2,400 pages can still be printed at 5% coverage.)

CONTINUE: The printer con tinues t o print while th e CARTRIDGE LOW message appears. STOP: The printer goes offline and wait for attention.

Determine how the printer functions when toner is out.

Determine how the printer functions when a jam occurs. AUTO: The printer automatically selects the best mode for printer jam recovery (usually ON). This is the default setting. ON: The printer automatically reprints pages after a jam is cleared. OFF: The printer does not reprint pages following a jam. Printing performance might be increased with this setting.

Configure device menu 47

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Item Values Explanation

RAM DISK=AUTO

(HP LaserJet 90 00 only)

LANGUAGE=ENGLISH List of

AUTO

OFF

available languages

This item determines how the RAM disk is configured. This item appears only if no opt ional ha rd disk is instal led and th e printer has at least 8 MB of memory.

OFF: The RAM disk is disabled.

Note

If the setting is changed from OFF to AUTO, the printer automatically reinitializes after it comes out of an idle period.

Sets the language that is used on the control panel.

I/O submenu

Items in the I/O (input/output) menu affect the communication between the printer and the computer.

I/O timeout submenu

Item Values Explanation

I/O TIMEOUT=15 5 to 300 Select the I/O timeout pe riod i n second s. (I/O timeout ref ers to the

time, measured in seconds, that the printer waits before ending a print job.) Use this setting to adjust timeout for best performance. If data from other ports appears in the middle of your print job, increase the timeout value.

Parallel input submenu

Item Values Explanation

HIGH SPEED=YES YES

ADVANCED FUNCTIONS=ON

ON OFF

The printer accepts the faster parallel communications that are used for connections with newer computers.

Turn the bidirectional par allel co mmuni cation on or off . T he def ault is set for a bidirectional parallel port (IEEE-1284). This setting allows the printer to send status readback messages to the computer . (Turning the parallel advanced functions on mi ght slow language switching.)

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EIO X Jetdirect submenu

The EIO (enhanced input/output) submenu appears only when an EIO device is installed in an EIO slot on the printer (such as an HP Jetdirect print server). The items in the menu depend on the particular accessory product that is installed. If the printer contains an HP Jetdirect print server EIO card, you can configure basic networking parameters by using the EIO menu. These and other parameters can also be configured through HP Web Jetadmin or other network configuration tools (such as by using Telnet or browsing the embedded Web server).

For more information about the EIO submenu, see the documentation that came with the EIO Jetdirect card.

Configure device menu 49

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Embedded Jetdirect submenu (HP LaserJet 9040n/9050n and 9040dn/9050dn only)

Item Options Values Explanation

TCP/IP ENABLE

HOST NAME

CONFIG METHOD

DHCP RELEASE

OFF

BOOTP

DHCP

AUTO IP

MANUAL

Enable the TCP/IP protocol. Disable the TCP/IP protocol.

An alphanumeric string, up to 32 characters, that identifies the device. This name is listed on the Jetdirect configur ation page . The def ault host na me is NPIxxxxxx, where xxxxxx is the last six digits of the LAN hardware (MAC) address.

Use BootP (Bootstrap Protocol) for automatic configuration from a BootP server.

Use DHCP (Dynamic Host Configuration Protocol) for automatic configuration from a DHCP server. If selected and a DHCP lease exists, DHCP RELEASE and DHCP RENEW menus will be available to set DHCP lease options.

Use automatic lin k-local IP add ressing. An ad dress in the form 169.254.x.x will be automatically assigned.

Use the MANUAL SETTINGS menu to configure TCP/IP parameters.

The current DHCP lease along with the leased IP address are released.

DHCP RENEW

MANUAL SETTINGS

NO (default)

YES

IP ADDRESS

SUBNET MASK

SYSLOG SERVER

DEFAULT GATEWAY

IDLE TIMEOUT

The print server does not request to renew t he DHCP lease.

The print server requests to renew the current DHCP lease.

The unique IP address of the printer. The subnet mask for the printer.

The IP address of the syslog server that receives and logs sysl og messages.

The IP address of the gateway or router used for communications with other networks.

The time period, in seconds, after which an idle TCP print data connection is closed (default is 270 seconds).

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Item Options Values Explanation

TCP/IP

DEFAULT IP

PRIMARY DNS

SECONDARY DNS

PROXY SERVER

PROXY PORT

AUTO IP

LEGACY

A link-local IP address of 169.254.x.x is set. The address 192.0.0.192 is set, consistent with

older Jetdirect products. Specify the IP address (n.n.n.n) of the Primary

Domain Name System (DNS) Server. Specify the IP address (n.n.n.n) of the Secondary

Domain Name System (DNS) Server. Specify the proxy server to be used by embedded

applications in your printer. A proxy server is typically used by network clients for Internet access. It caches Web pages, and provides a degree of Internet se curity, for those clients. To specify a proxy server, type its IP address or fully-qualified domain name. The name can be up to 64 characters. For some netwo rks, yo u might nee d to contact yo ur Independent Service Provider (ISP) for the proxy server address.

Type the port number that the proxy server uses for client support. The port number identifies the port that is reserved for proxy activity on your network, and can be a value from 0 to 65,535.

IPX/SPX ENABLE

FRAME TYPE

ON OFF

AUTO

Enable the IPX/SPX protocol. Disable the IPX/SPX protocol.

Select the frame type setting for your network. AUTO (default) automatically sets and limits the frame type to the first one detected.

EN_8023 EN_II

These EN values are frame-type selections for Ethernet networks.

EN_8022 EN_SNAP

APPLETALK ENABLE ON

Enable or disable the AppleTalk protocol.

OFF

DLC/LLC ENABLE Enable or disable the DLC/LLC protocol.

SECURE WEB HTTPS

REQUIRED

For secure, encrypted communications, only HTTPS access is accepted. The print server appears as a secure site.

HTTPS

Access is permitted to either HTTP or HTTPS.

OPTIONAL

Configure device menu 51

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Item Options Values Explanation

DIAGNOSTICS LOOPBACK

TEST

PING TEST

YES NO

DEST IP

PACKET SIZE

TIMEOUT

COUNT

PRINT RESULTS

EXECUTE

CAUTION

This test will erase your TCP/IP configuration.

YES the loopback test will be initiated. NO the loopback test will not be initiated.

Specify the IP address of the remote host. A valid IP address must be specified.

Specify the size o f each p ack et , in b ytes , to be sent to the remote host. The minim um is 64 (def ault) a nd the maximum is 2,048.

Specify the length of time, in seconds, to wait for a response from the remote host. The default is 1 and the maximum is 100.

Specify the number of ping test packets to send for this test. Select a value from 1 to 100. To configure the test to run continuously, select 0.

If the ping tes t wa s not set f or cont inuous o perat ion, you can choose to print the test results. Select YES to print results or NO.

Specify whether to initiate the ping test. Select YES to initiate the test or NO.

PING RESULTS

PACKETS SENT

PACKETS RECEIVED

PERCENT LOST

RTT MIN

RTT MAX

RTT AVE

PING IN PROGRESS

Determines the number of packets (0-65,535) that have bee n sent to the remote host sin ce the most recent test was initiated or completed.

Shows the number of packets (0-65,535) that have been received from the remote host sinc e the mo st recent test was initiated or completed.

Shows the percent of ping test packets that were sent with no response from the remote host since the most recent test was initiated or completed.

Shows the minimum detected round-trip-t ime (RTT), from 0 to 4096 milliseconds, for packet transmission and response.

Shows the maximum detected RTT, from 0 to 4096 milliseconds , f or pac k e t tran smis sion a nd respo nse .

Shows the average detected RTT, from 0 to 4,096 milliseconds , f or pac k e t tran smis sion a nd respo nse .

Shows whether or not a p ing test is in prog ress . YES indicates a test in progress and NO indicates that a test completed or was not run.

Updates the ping test data with current results.

52 Chapter 3 Product configuration

REFRESH

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Item Options Values Explanation

RESET SECURITY NO

YES

LINK SPEED AUTO

10T HALF

10T FULL

100TX HALF

100TX FULL

NO YES

Specifies wether the current security settings on the print server will be saved or reset to factory defaults. NO (default): The current security settings are maintained. YES: The security settings are reset to factory defaults.

The print server automatically configures itself to match the network link speed and communication mode. If it fails, 100TX HALF is set.

10 Mbps, half-duplex operation 10 Mbps, full-duplex operation 100 Mbps, half-duplex operation 100 Mbps, full-duplex operation

Resets submenu

Note Use this menu with caution. You can lose buffered page data or printer configuration settings when

you select these items. Reset the product only under the following circumstances:

z You want to restore the printer default settings. z Communication between the product and computer has been interrupted. z You are having problems with a port.

The items in the Resets submenu clear all memory in the printer, while RESET clears only the current job.

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Diagnostics menu

Administrators can use this menu to troubleshoot jam and print-quality issues.

Item Values Explanation

PRINT EVENT LOG

SHOW EVENT LOG Allows the user to scr oll through the content s of the e v ent lo g from

PAPER PATH TEST

PRINT TEST PAGE

SOURCE=TRAY 2

DESTINATION= STANDARD OUTPUT

DUPLEX=OFF

COPIES=1

SENSORS=OFF

Generates a localized LIFO (last in, first out) list of the 50 most recent entries in the error log. The print ed event log shows error number, page count, error code, and description or personality.

the printer control panel, and shows the 50 most recent events. Use and to scroll through the event log contents.

Generates a test p age tha t is us eful for testing the pap er-hand ling features of the printer.

Specifies if paper from all of the trays or from a specific tray is used when the test is performed.

Specifies which paper paths are tested.

Specifies if the duplexer is included when the test is performed. Specifies how man y sheets of paper from the specified source are

sent when the test is performed. Specifies if sensor information appears as the paper moves

through the path or if only the status of the device is appears during the paper path test.

SERVICE TEST The engine tests access portions of the printer internal

Service menu

The Service menu is locked. A service technician must type a PIN to open the menu. See "Service

menu" on page 215 for more information.

diagnostics that occur when the printer is turned on. These diagnostics are availab le a s tool s to he lp iso late p rob le ms that the firmware does not report. See "Service test " on page 213 f or more information.

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Remote firmware upgrade (RFU)

The process for upgrading printer firmware remotely involves three steps:

1 Determine the current level of firmware installed on the printer. 2 Go to the www.hp.com/go/lj9000_firmware

www.hp.com/go/lj9050_firmware

3 Download the new firmware to the printer.

Note In some instances, an upgrade might require about 10 minutes to complete.

Web site and download the latest firmware.

, www.hp.com/go/lj9040_firmware, or

Upgrading firmware to a single printer

You can send an .RFU upgrade to a printer at any time; the printer waits for all input/output channels to become idle before turning power off and back on.

Note If the firmware upgrade involves a change in the format of NVRAM, the NVRAM settings are lost and

must be set again by the customer. The elapsed time for an upgrade depends on the I/O transfer time, in addition to the time that it takes

for the printer to reinitialize. The I/O transfer time depends on several things, including the speed of the computer that is sending the upgrade and the I/O method (FIR, parallel, or network). The reinitialization time depends on the specific hardware configuration of the printer, such as the number of EIO devices that are installed, the presence of external paper-handling devices, and the amount of memory that is installed. Finally, any print jobs that are ahead of the .RFU job in the queue print before the .RFU upgrade processes.

Note The printer automatically restarts after processing the upgrade.

Windows systems

If the printer is shared on the network, then the following command can be issued from a command prompt:

copy /b FILENAME \\SHARENAME\PRINTERNAME where FILENAMEis the name of the .RFU, SHARENAME is the name of the computer from which

the printer is being shared, and PRINTERNAME is the printer share name. If the printer is connected locally, then the .RFU can be sent directly to the printer with a COPY

command from a command prompt or MS-DOS window: copy /b FILENAME PORTNAME where FILENAME is the name of the .RFU, and PORTNAME is the name of the appropriate printer

port (such as LPT 1). The following setting on the control panel might help if a timeout message appears on the computer

during an upgrade.

To change the timeout on the control panel

1 Press the Menu tab. 2 Press CONFIGURE DEVICE. 3 Press I/O. 4 Press I/O TIMEOUT. 5 Specify 300 seconds as the value.

Remote firmware upgrade (RFU) 55

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6 Press OK. 7 Press EXIT.

The following command can be set on the computer to address a timeout message that appears on the computer screen during an upgrade. From a command prompt or MS-DOS window, type the command and press the enter key:

Mode lpt1:,,p If the printer is attached to a parallel port other than LPT1, substitute the correct LPT port number in

the mode command. After this command is set, the file can be copied to the printer with the previously mentioned copy command.

Note You can also send the file through a FIR port.

FTP

If the HP LaserJet printer uses a direct network connection, file transfer protocol (FTP) can be used to update the HP LaserJet firmware following these steps:

1 See the TCP/IP address on the EIO X Jetdirect page (is the second page of the configuration

page printout).

Note See "Evaluate the information pages" on page 226 to print a configuration page.

Note Before connecting to the printer, make sure that the printer is not in Powersave mode. Make sure that

any error messages are cleared from the control panel.

2 Open a MS- DOS command window on the computer. 3 Type FTP <TCP/IP PRINTER ADDRESS> (for example, if the TCP/IP address is 192.168.0.90,

type FTP 192.168.0.90.

4 Press E 5 When prompted for the user name and the password, press E

NTER on the computer keyboard.

NTER for each.

6 Type BIN at the >prompt. 7 Press E

NTER.

8 Type:put <path> where <path> is the location where the .RFU was downloaded from the Web.

For example, type: PUT C:\LJ9000\lj9000FW.RFU, C:\LJ9040\lj9040FW.RFU, or PUT C:\LJ9050\lj9050FW.RFU and then press enter.

9 When the download process starts and the firmware is updated on the printer, type BYE at the

command prompt, and then press E

NTER to exit the FTP session.

HP Web Jetadmin 7.5/7.6 for single or multiple printers

1 Download the appropriate firmware upgrade file from www.hp.com to a folder on the computer

that is running HP Web Jetadmin.

2 Start Web Jetadmin 7.x. 3 From the navigation section on the screen, select Device management from the drop-down

menu. This selection is located at the upper-left of the window.

4 Click the Tools folder, and then select Printer Firmware Update from the Multip le Firmware

Update folder.

5 Click Update a firmware image file. 6 Click Browse and locate the correct firmware image. 7 Click Upload to place the firmware image file on the server.

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8 Verify that the information that appears in All Available Images. 9 Click Return to Device Firmware Update. 10 Select the printer(s) to be upgraded. 11 Click Update Firmware Now to start the upgrade immediately, or enter an appropriate date and

time, and then click Schedule Update for Later to perform the upgrade at another time.

Note Do not turn the printer off during the upgrade. When the upgrade is complete, the printer automatically

reboots.

Note The status of the firmware upgrade can be monitored by selecting View Printer Update Status in the

navigation section on the screen.

HP Web Jetadmin 6.1 for a single printer

This procedure requires that Web Jetadmin version 6.1 be installed. Complete the following steps to upgrade a single printer through Web Jetadmin after downloading the .RFU file from the HP Web site.

1 Start HP Web Jetadmin 6.1. 2 Type the IP address or IP hostname of the printer in the Quick Device Find field, and then click

Go. The printer Status window appears.

3 Click the right arrow on the toolbar to see the Update button. 4 Click Update. 5 When prompted for the type of update to perform, click Update Printers, and then click

Continue.

6 Under Upload new firmware imag e:, click Browse to locate the .RFU file you that downloaded

from the www.hp.com/go/lj9000_firmware

go/lj9050_firmware Web site.

7 Click Upload to move the .RFU from your hard drive to the HP Web Jetadmin server. 8 Refresh the browser. 9 Select the .RFU from the Select new firmware version: drop-down menu. 10 Click Update Firmware. HP Web Jetadmin sends the selected .RFU to the printer.

Also, HP Web Jetadmin 6.1 can be used to perform multiple or unattended installations:

Note In some instances, an upgrade might require about 10 minutes to complete.

1 Start HP Web Jetadmin. 2 Create a device group. The following is a simple way to do this:

a. Click Devices on the Choose: drop-down menu.

b. Click Device Model from the Filter: drop-down menu.

c. Type iy9000lw or iy9050lw in the Criteria (Optional): field.

, www.hp.com/go/lj9040_firmware, or the www.hp.com/

d. Click Go.

3 In the Device List , select the printers that you want to include in the group, and then click Create

Group.

4 When prompted, type a name for the new device group, and then click OK. 5 Click Update.

Remote firmware upgrade (RFU) 57

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6 When prompted for the type of update to perform, click Update Printers, and then click

Continue.

7 From the list of HP Devices, select the printers to be upgraded, or click Select All. 8 Click Update to install the new printer firmware.

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4 Product maintenance

Chapter contents

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

Chapter contents 59

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Preventative maintenance

To ensure optimum print quality, the printer prompts customers to perform printer maintenance every 350,000 pages. When the PERFORM PRINTER MAINTENANCE message appears on the control panel, the customer needs to purchase and install a preventive maintenance kit. After a new maintenance kit is installed, press and hold until all three LEDs are solid. Press , and then press to reset the maintenance counter.

Note The preventive maintenance kit is a consumable, and is not covered under warranty.

For more information about installing a preventive maintenance kit, see the installation guide that accompanies it.

Preventive maintenance kit contents

The preventive maintenance kit, P/N C9152A (110 V) or C9153A (220 V), should be replaced after each 350,000 pages of use. The following parts are included in the preventive maintenance kit:

z Fuser assembly (1 assembly) z Transfer roller assembly (1 assembly) z Feed rollers (tray 2 and tray 3) (4 rollers) z Pickup rollers (tray 2 and tray 3) (2 rollers) z Tray 4 rollers (3 rollers)

Variables such as media, environment, and usage can cause premature wear of these parts. See "Media specifications" in chapter 2 or the HP LaserJet Printer Family Print Media Guide for information about suitable media, environment, and usage conditions.

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Cleaning the printer and accessories

To maintain superior print quality and performance, use the following procedures to clean the printer and the paper-handling accessories thoroughly every time you change the print cartridge or whenever print-quality problems occur.

General cleaning

WARNING! In order to avoid shock hazard, turn the printer and the paper-handling accessories off and unplug all

of the power cords before you begin these steps.

CAUTION Do not use ammonia-based cleaners on or around the products. While cleaning the printer, be careful

not to touch the transfer roller (located underneath the print cartridge). Skin oils on the roller can cause print-quality problem s.

To prevent damage, do not expose the print cartridge to direct light. Place a piece of paper over the print cartridge to shield it while it is out of the printer.

z Clean the outside of the products with a water-dampened cloth. z Clean the inside of the products with a dry, lint-free cloth.

Cleaning spilled toner

Defective print cartridges can develop leaks. After a jam has occurred, some toner might remain on the rollers and guides inside the printer. The pages that print immediately after the jam can pick up this toner.

Note T o clean skin and clothing of toner spills, remove as much toner as possible with a dry tissue, and then

wash with cold water. Hot water causes toner to set permanently into clothing.

Vacuum specifications

Do not use a conventional vacuum to vacuum the printer or any spilled toner. The toner particles that are used in this product might be too fine for effective vacuuming and could result in damage to the conventional vacuum cleaner.

A vacuum cleaner that is specifically designed for cleaning toner can be used if it is capable of filtering fine particles (5 micron s in dia mete r) .

Dispose of waste toner in accordance with local requirements. Do not discharge toner particles in drains.

First aid measures

z Ingestion—If toner is ingested, rinse your mouth thoroughly with water and drink several

glasses of water. If irritation occurs, consult a physician.

z Inhalation—If toner particles are inhaled, move to fresh air immediately. If irritation occurs,

consult a physician.

z Eye contact—If toner comes in contact with the eyes, immediately flush them with plenty of

water for at least 15 minutes. If irritation occurs, consult a physician.

z Skin contact—If toner spills on skin, remove as much toner as possible by using a dry tissue

(more than one might be needed), and then wash the affected area of the skin with cold water. If

irritation occurs, consult a physician.

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Internal cleaning

During the printing process, paper, toner, and dust particles can accumulate inside the printer and the paper-handling accessories. Over time, this buildup can cause print-quality problems such as toner specks or smearing. Internal cleaning can assist in correcting and preventing these types of problems.

CAUTION Before you begin these steps, turn the printer off and unplug all of the power cords to avoid shock

hazard.

1 Turn the printer off and unplug all of the power cords.

Figure 14. Turn off the printer and remove the power cords

CAUTION To prevent damage to the print cartridge, use two hands when removing it from the printer.

2 Open the front cover, turn the green lever counterclockwise to the unlocked position, and then

slide the print cartridge out of the printer.

Figure 15. Remove the print cartridge

CAUTION To prevent damage, do not expose the print cartridge to light. Place a piece of paper over the print

cartridge to shield it while it is out of the printer.

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3 Using a dry, lint-free cloth, wipe any residue from the paper-path area, the registration roller, and

the print cartridge cavity.

Figure 16. Wipe any residue

4 Replace the print cartridge.

Figure 17. Replace the print cartridge

5 Press the button on the green lever, and then turn the lever clockwise to the locked position.

Figure 18. Lock the print cartridge

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6 Close the front cover. Plug in all of the power cords, and then turn on the printer.

Figure 19. Close the front cover

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Fuser cleaning

To complete internal cleaning, create and process a cleaning page.

Create a cleaning page

Generating a cleaning page cleans the excess toner off the pressure roller in the fuser. The page contains instructions that walk the customer through the process of inserting the page in a tray. If tray 1 is installed, the instructions indicate that the page should be placed face-down in tray 1. If tray 1 is not installed, the instructions indicate that the page be placed face-up in tray 2. The customer is then instructed to select the PROCESS CLEANING PAGE on the control panel. A sample cleaning page is shown below. While the cleaning page is printing, the display shows CREATING CLEANING PAGE.

Note For best results, use copier-grade paper with a smooth surface and a weight of 64 to 90 g/m

(17 to 24 lb). Do not use bond or rough paper.

Create/print a cleaning page

1 Press to open the menus. 2 Press 3 Press 4 Press 5 A cleaning page prints.

or to scroll to CONFIGURE DEVICE, and then press . or to scroll to PRINT QUALITY, and then press . or to scroll to CREATE CLEANING PAGE, and then press .

Figure 20. Sample cleaning page

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Process a cleaning page

Follow the instruc tions o n the cl eaning p age to co mplete th e cleani ng proces s. PROCESS CLEANING PAGE is only visible to the customer after a cleaning page is generated by using

the CREATE CLEANING PAGE menu. When the customer generates the page and places it face-down in tray 1, or face-up in tray 2, the customer is instructed to select this menu item to complete the cleaning process. The device must check to make sure that letter or A4 paper is loaded so that the long edge feeds first. When the customer completes these steps, this menu item is not visible until another cleaning page is created. While the cleaning page is being processed, CLEANING appears on the display panel.

Note When toner is cleaned from inside the printer, shiny black spots appear on the black strip. If white spots

appear on the black strip, print another cleaning page.

Note To ensure good print quality with certain types of paper, use the cleaning page every time the print

cartridge is replaced. If the cleaning page is frequently needed, try a different type of paper for print jobs.

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Print cartridge information

Print cartridges contain components that are sensitive to light, temperature, and humidity. Make sure that the customer follows the recommendations in this section to ensure the highest quality and longest life of the print cartridge.

Storage

The print cartridge (C8543X) should not be removed from its package until installation. If cartridges are stored, the storage environment should meet the conditions listed in the following

table.

Table 13. Storing print cartridges

Category Temperature Humidity

Storage -20°C to 40°C

°F to 104°F)

(-4

10% to 90% RH

If the print cartridge must be removed from the printer, always store the cartridge in a situation that meets the following criteria:

z Inside the protective bag in which it was originally packaged

Note If original package is not available, cover the top opening of the print cartridge with paper.

z In a dark cabinet, away from direct sunlight z With the correct side up and with the cartridge in a horizontal position (not standing on end) z At a temperature listed in the preceding table z Away from ammonia or other organic-solvent fumes

CAUTION Never ship the printer with a print cartridge installed. Excessive vibration during shipping can cause

toner to leak, contaminating the printer. Never expose the print cartridge to direct sunlight, or to room light. Bright light and direct sunlight can

permanently damage a print cartridge.

Handling instructions

z Do not touch the surface of the photosensitive drum in the cartridge. Protect the drum from light

and contamination.

z Do not expose the cartridge to unnecessary vibrations or shock. z Do not expose the photosensitive drum to strong light. Blurred areas on the page might indicate

that the drum has been exposed to light for too long. This causes permanent damage to the

photosensitive drum. If this occurs, replace the cartridge.

z Never manually rotate the drum, especially in the reverse direction. Manual rotation can cause

internal damage and toner spills.

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Refilled print cartridges

HP policy about non-HP print cartridges

Hewlett-Packard Company cannot recommend using new, refilled, or remanufactured, non-HP print cartridges. Because they are not HP products, HP cannot influence their design or control their quality.

While Hewlett-Packard Company does not prohibit the use of refilled print cartridges during the warranty period or while the printer is under a maintenance contract, we do not recommend their use for the following reasons:

z Hewlett-Packard has no ability to ensure that a refilled print cartridge functions at the high level

or reliability of a new HP print cartridge. Hewlett-Packard also cannot predict the long-term effect of the various toner formulations found in refilled cartridges.

z Hewlett-Packard has no control over the print quality of a refilled print cartridge. The print quality

of HP print cartridges influences customer perception of the printer.

z Repairs resulting from the use of refilled print cartridges are not be covered under the HP

warranty or maintenance contract.

z Smart cartridge features (cartridge out/low) are not available.

Print-cartridge weights

The approximate weight of a print cartridge when full and empty is as follows:

z Full: 4,220 grams (9.28 lb) z Empty: 2,700 grams (5.94 lb)

Print-cartridge life expectancy

The life of the print cartridge depends on the amount of toner used in each print job. When printing text at 5% coverage, an HP LaserJet 9000/9040/9050 print cartridge lasts an average of 30,000 images. This life expectancy is estimated with the default print density setting, and EconoMode off (default settings).

Saving toner by using EconoMode

HP LaserJet 9000/9040/9050 print cartridge usage can be extended by using the printer EconoMode feature. EconoMode can be turned on or off through the driver or through HP LaserJet device configuration.

z Some software programs might refer to EconoMode as “draft mode.” z EconoMode is only available if a genuine HP print cartridge is installed.

Note HP does not recommend full-time use of EconoMode. If EconoMode is used full-time when the average

toner coverage is significantly less than 5%, it is possible that the toner supply will outlast the mechanical parts in the print cartridge. If print quality begins to degrade under these circumstances, you will need to install a new print cartridge even if there is toner supply remaining in the cartridge.

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5 Theory of operation

Chapter contents

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

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

Chapter contents 69

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Basic operation

This chapter provides information about the following systems:

z Engine control z Formatter z Laser/scanner z Image formation z Pickup and feed

Relationships among the five systems are represented in figure 21.

Figure 21. Printer systems

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Sequence of operation

The engine control system controls operational sequences. Table 14 describes the sequences.

Figure 22. Sequence-of-operation block diagram

Table 14. Normal sequence of operation

State Period Operation

WAIT From the time the power is

switched on until the surface temperature of the fuser and pressure rollers reach their WAIT target v alue (f our mi nute s or less)

STBY (standby)

From the end of the WAIT period to the input of a print reservation command from the formatter

-orFrom the end of the LSTR period until either a print reservation command is input from the formatter or unti l power is switched off

z Power on: CPU and ASIC initialize z Fan rotat ion (fans 1 through 6 for 30 seconds, dup lexer fan for

3 seconds)

z Formatter interface communication starts z Fuser heaters turn on z Cartridge check z Cartridge-memory check for toner level z Optional interface communication (duplexer, tray 1, tray 4,

paper handling)

z Cassette checks (lifting and loading status) z Jam check (auto flush/eject) z Fuser-wrapping-jam detect z Door open/sleep chec k z Fuser-roller temperature control and delivery motor

z Fuser control (fuser roller temperature—180°C [356°F]/

pressure roller 140°C [285°F])

z Print reservation command (awaits INTR sequence) z Fan-motor drive control (fans 1 through 5 half-speed rotation;

fan 6 is off)

z If the standby state lasts five minutes or more, the fuser/

delivery motor is rotated for about 0.08 second to prevent the pressure roller from becoming deformed.

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Table 14. Normal sequence of operation (continued)

State Period Operation

INTR (initial rotation)

From the input of a printreservation command from the formatter until the laser/scanne r enters a ready state

PRINT From the input of a print

command until the primary dc bias is turned off

z scanner-motor rotation z fuser/delivery-motor rotation z drum-motor rotation z high-voltage control (negative bias to transfer roller) z receives print command z fan-motors 1 through 6 full-speed rotation z pickup operation starts z high-voltage control bias applied to primary charging roller,

developing roller, and transfer roller)

z fuser control (fuser roller to 190°C [374 °F], pressure roller

180°C [356°F])

z initial rotation final ch eck (high-volt age, scanner motor, picku p

operation complete)

z jam/door open/f ail ure/sleep check z fuser/delivery, drum, scanner, and fan-motor rotations

z fuser control (print temperature—fuser 190°C [374°F]) z engine-to-formatter output signal z formatter-to-engine input signal z paper-feed control z image control z high-voltage control (toner level-output separation bias and

pressure roller bias)

z next-pickup control (calculates, from media size, the speed to

send media through)

z jam/door open/f ail ure

LSTR (last rotation)

From the time the primary charging roller is tu rned o ff u nti l each of the motors stops

z fuser/delivery, drum, scanner, and fan motor rotations z high-voltage control completion z fuser control (print to standby temperature—180°C [356°F]) z fan motor control (fan 1 through 6 full-speed rotation) z fuser/delivery, drum, and scanner motor stop (writes in

cartridge memory)

z jam/door open/f ail ure ch eck z ready for ne xt pickup

Table 15. Failure sequence of operation

State Period Operation

JAM From the time the power is

switched on until the end of the LSTR period

DOOR OPEN

From the time the power is switched on until the end of the LSTR period

FAILURE From the time the power is

switched on until the end of the LSTR period

z sensor check z drive stop (scanner motor, high-voltage, fuser control, and

fuser/delivery motor stop)

z status setting (jam status set) z door open check

z drive stop z status setting z door close (wait sequence)

z drive stop z status setting (set)

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Table 15. Failure sequence of operation (continued)

State Period Operation

SLEEP From the time the power is

switched on until the end of the LSTR period

z drive stop (scanner motor, high-voltage control, fuser control,

fuser/delivery motor, 24 V stop, 3.3 V sets PowerSave mode, fan motor stop)

z status setting z door-open check

Power-on sequence

The sequence from the time the power is turned on until the printer enters the standby state is as follows:

1 The power is turned on. 2 The CPU and the ASIC are initialized. 3 Video interface communication begins (formatter). 4 All of the fans are turned on. 5 The printer flushes any residual paper from the paper path. 6 A cartridge-pres enc e ch eck occu rs. 7 A cartridge-memory check occurs. 8 Any installed accessories are initialized. 9 The fuser and pressure-roller heaters are turned on. 10 The pickup-roller motor and the cassette-lifter motors are turned on. 11 The pickup-roller motor and the cassette-lifter motors are tur n ed off. 12 The fuser motor, drum motor, and transfer negative bias are turned on. 13 The pressure bias and the jam detection lever drive solenoid (SL501) are turned on. 14 The developing ac bias is turned on (toner-level detection). 15 The fuser reaches its target temperature. 16 The fuser motor, drum motor, transfer negative bias, pressure bias, and SL501 are turned off. 17 Standby is initialized.

Basic operation 73

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Timing chart

Figure 23. Timing chart block diagram

74 Chapter 5 Theory of operation

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Engine control system

The engine control system coordinates the laser/scanner, image formation, and pickup and feed systems according to the instructions it receives from the formatter. The engine control system consists of the DC controller PCA, the high-voltage power supply circuit, and the low-voltage power supply unit.

Figure 24 shows a block diagram of the engine control system.

Figure 24. Engine-control-system block diagram

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DC controller PCA

The DC controller circuit controls operational sequences of the printer.

Figure 25. DC controller PCA block diagram

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DC controller operations

z The CPU (IC201) on the DC controller PCA controls the following printer operations:

• Sequence of the printer

• Communications with the formatter

• High-voltage power supply circuit

• Rotation of the pickup motor, lifter motor, pic kup roller motor, and fan motor 6

• Communication with the duplexer and tray 1, if installed

• Fuser heater control circuit and fuser heater safety circuit

z The ASIC (IC202) on the DC controller PCA controls the following printer operations, according

to instructions from the CPU:

• laser/scanner

• rotation of fuser/delivery motor and drum motor

• sensors and switches

• clutches and solenoids

• rotation of fan motors 1 through 5

z The reset IC (IC203) monitors +3.3 V and resets the CPU and ASIC at power on. z The EEPROM (IC204) stores backup data. z The pickup motor driver IC (IC205) drives the pickup motor. z The pickup roller up-and-down motor driver IC (IC206) drives the pickup roller up-and-down

motor.

z The lifter motor driver IC (IC207) drives the lifter motor. z The fan motor control circuit turns fans on and off.

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High-voltage power supply circuit

The high-voltage power supply circuit applies a high-voltage bias to the primary charging roller, the developing cylinder, the pre-transfer upper guide, the transfer charging roller, the separation static charge eliminator, and the pressure roller through the ASIC (IC 202), according to instructions it receives from the CPU (IC201) on the DC controller PCA. The high-voltage power supply circuit also detects the toner level.

Figure 26. High-voltage power supply block diagram

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Each of the bias generation circuits has a specific purpose:

z Primary charging bias generation. Applies bias to the primary charging roller to spread a

uniform, negative charge on the photosensitive drum.

z Developing bias generation. Controls the amount of toner transferred onto latent images

formed on the photosensitive drum.

z Pre-transfer upper guide bias generation. Prevents toner on the photosensitive drum from

adhering to the pre-transfer upper guide.

z T ransfer bias generation. Each of the three types of transfer bias (cleaning bias, between-page

bias, and print bias) is applied to the transfer charging roller at specified intervals.

z Cleaning bias. Cleans the transfer charging roller by moving toner to the photosensitive drum. z Between-page bias. Prevents residual toner on the photosensitive drum from adhering to the

transfer charging roller between pages of a multi-page print job.

z Print bias. Transfers toner from the photosensitive drum to the print media. z Separation static charge eliminating bias. Stabilizes media delivery. z Pressure roller bias generation. Prevents toner from adhering to the fuser roller. z Toner level detection. Monitors toner level through two antennae (plate antenna and flat

antenna) in the print cartridge.

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Low-voltage power supply unit

The low-voltage power supply unit consists of the fuser control circuit and the low-voltage powersupply circuit.

Figure 27. Power-supply-block diagram

Fuser control circuit

Three heaters heat the fuser roller and pressure roller. The main heater (H1) heats the center of the fuser roller, the sub-heater (H2) heats both ends of the fuser roller, and the lower heater (H3) heats the pressure roller.

Two thermistors monitor the surface temperature of the rollers. The upper thermistor (TH1) monitors the fuser roller surface temperature and the lower thermistor (TH2) monitors the pressure roller surface temperature.

Two thermal switches guard against overheating the three heaters by turning off power to the heaters when the temperature rises abnormally.

The printer is designed to prevent flicker. Lights attached to the same ac power source as the printer can flicker as a result of high-frequency noise. To control flicker, the printer gradually increases and decreases power to the heaters when they are turned on and off.

Low-voltage power-supply circuit

The low-voltage power-supply circuit converts ac voltage from the power source to dc voltage when the printer is turned on. The ac power is converted as follows:

z +24 Vdc for motors, solenoids, clutches, and the high-voltage power supply circuit z +5 Vdc for the laser/scanner PCA, the beam detect PCA, and the formatter z +3.3 Vdc for the formatter, sensors, and the ICs on the DC controller PCA

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Formatter system

The formatter and DC controller exchange signals that allow the DC controller to begin the initial rotation period (INTR), turn on the registration roller drive clutch, and feed media into the printer. When media is positioned for printing, the formatter sends information through the DC controller to the laser/scanner, which then turns the laser diodes on and off. Laser beams that the laser diodes emit are reflected by the laser/scanner mirror, scanning across the photosensitive drum to form a latent image on the drum.

The formatter system is responsible for the following:

z Receiving and processing data from the various printer interfaces z Monitoring control panel input and relaying printer status information (through the control panel

and the I/O)

z Developing and coordinating data placement and timing with the print engine z Storing font information and macros z Communicating with the host computer

The formatter receives data from the I/O and converts it into a dot image. The formatter then sends a print signal to the engine controller assembly. The engine controller assembly synchronizes the image-formation system with the paper-feed system, and signals the formatter to send the printimage data. The formatter sends the print-image data (dots) in the form of a video signal, and the printing process begins.

Formatter hardware

The formatter system includes the following components:

z ROM—Stores the dot patterns of internal character sets (fonts), in addition to storing

microprocessor control programs.

z RAM—Stores printing and font information received from the host system, and can also serve to

temporarily store a full page of print-image data before the data is sent to the print engine.

Increasing the RAM increases graphic intense printing operations, but it will not increase the

I/O buffer space or cause the printer to print more pages per minute.

z NVRAM—Stores information about the I/O and print environment configuration. The printer

keeps the contents of NVRAM when the power is turned off or disconnected. (As in other HP

LaserJet printers, downloaded fonts and macros are saved in conventional RAM and are lost

when power is turned off.)

z Interfaces

• Parallel interface (HP LaserJet 9040/9050 only)—Receives incoming data through its IEEE1284 B interface connector. The IEEE-1284 B interface provides high-speed, two-way communication between the printer and the host, letting the customer change printer settings and monitor printer status from the host computer.

• Parallel interface (HP LaserJet 9000 only)—Receives incoming data through its IEEE1284 C interface connector. The IEEE-1284 C interface provides high-speed, two-way communication between the printer and the host, letting the customer change printer settings and monitor printer status from the host computer.

• EIO—Supports a wide range of print servers and other add-on devices through PCI-based EIO slots. HP Jetdirect EIO cards provide high-speed communication for network printing over Ethernet, Ethernet and LocalTalk, Token Ring, or Fast Ethernet networks.

z Flash memory card (HP LaserJet 9040/9050 only)—The formatter has three flash memory card

slots. One slot is dedicated to printer firmware. The printer supports Type 1 and Type 2 flash memory. Unlike standard printer memory, flash memory cards can be used to permanently store downloaded fonts, macros, and forms even when the printer is turned off.

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Note A flash memory card that is designed for use with a digital camera should not be inserted into the

printer. The printer does not support photo printing directly from a flash memory card. If you install a camera-type flash memory card, a message asking if you want to reformat the flash memory card appears on the control-panel display . If you choose to reformat the card, all data on the card will be lost.

z Real Time Clock (HP LaserJet 9040/9050 only)—The user sets the date and time when the

printer is turned on for the first time. This date and time is used for the Wake-up time feature. A battery supplies power when the printer is turned off.

z HP Jetdirect Fast Ethernet embedded print server (HP LaserJet 9040/9050 only)—The

HP LaserJet 9040n/9050n and the HP LaserJet 9040dn/9050dn printers include an HP Jetdirect Fast Ethernet embedded print server on the formatter. This functions like other Jetdirect EIO products.

82 Chapter 5 Theory of operation

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Laser/scanner system

The laser/scanner unit of the HP LaserJet 9000 series printer and the HP LaserJet 9040/9050 series printer contains two laser diodes in its laser unit. The printer employs the “twin-beam method,” which scans two lines simultaneously.

Based on signals it receives from the DC controller and the formatter, the laser/scanner PCA causes the two laser diodes to emit laser beams. The beams strike a six-sided mirror that rotates at a constant speed. The beams reflect off the mirror, pass through a focusing lens and a reflective mirror, and focus on the photosensitive drum.

The scanning mirror rotating at a constant speed allows the laser beams to scan across the drum at a constant speed. Finally, a latent image is formed on the drum surface by constant-speed rotation of the photosensitive drum and constant-speed scanning of the laser beams.

Figure 28. Laser/scanner system

Laser/scanner system 83

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Image formation system

The image formation system consists of the cartridge, transfer charging roller, and fuser. When a print command is sent from the formatter, the engine controller drives the main motor to

rotate the photosensitive drum, primary charging roller, developing cylinder, transfer charging roller, and pressure roller.

The primary charging roller applies a uniform negative charge to the photosensitive drum surface. Laser beams, modulated by the signals from the formatter, focus on the photosensitive drum surface to form a latent image on the photosensitive drum.

Toner on the developing cylinder develops the latent image formed on the photosensitive drum into a visible image, which is transferred onto media by the transfer charging roller. The toner transferred is changed to a permanent image by heat and pressure in the fuser. The cleaning blade scrapes residual toner from the photosensitive drum, and the primary charging roller applies a uniform negative charge to the photosensitive drum surface in preparation for the next latent image.

Figure 29. Image formation

The eight processes of image formation

1 Conditioning (primary charging)—Consists of the application of a uniform negative charge to

the surface of the drum with the primary charging roller located in the print cartridge. The primary charging roller is made of conductive rubber. An ac bias is applied to the roller to erase any residual charges from any previous image. A negative dc bias is applied by the charging roller to create a uniform neg ative potential on the drum surface.

2 Writing (laser beam exposure)—Two laser diodes project laser beams onto a rotating scanning

mirror. As the mirror rotates, the beams reflect off the mirror, first through a set of focusing lenses, then off a mirror, and finally through a slot in the top of the print cartridge, and onto the photosensitive drum. The twin beams sweep the drum from left to right, discharging the negative potential wherever the beams strike the surface. This creates a latent electrostatic image, which later is developed into a visible image.

3 Developing—At this stage of the process, the latent electrostatic image is present on the drum.

The toner particles obtain a negative surface charge by rubbing against the developing cylinder which is connected to a negative dc supply. The negatively charged toner is attracted to the discharged (exposed, grounded) areas of the drum, and is repelled from the negatively charged (unexposed) areas.

4 Pre-transfer—Applies bias to prevent toner on the photosensitive drum from adhering to the

pre-transfer upper guide.

84 Chapter 5 Theory of operation

HP 9040, 9050, 9000 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of contents

List of tables

List of figures

1 Product infor mation

2 Product requirements

3 Product configuration

4 Product maintenance

5 Theory of operation