HP LaserJet 2300 Series Service Manual

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hp LaserJet 2300

series printer

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hp LaserJet 2300 series printer

service manual _____________

Part number: Q2472-90908 Edition 1, April 2003

Warranty

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

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

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

Trademark credits

Adobe® and PostScript® are trademarks of Adobe Systems Incorporated which may be registered in certain jurisdictions.

UNIX

is a registered trademark

of the Open Group. E

NERGY STAR

registered service mark of the United States Environmental Protection Agency.

is a U.S.

Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714 U.S.A.

1 Product description

Printer configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Power consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Print-cartridge and toner safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Laser safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

FCC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Environmental product stewardship program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Protecting the environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Material safety data sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

HP Printing Supplies Environmental Program information . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Service approach. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Bench-repair warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

HP Express Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Information about ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

World Wide Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

HP service parts-information compact disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

HP support-assistant compact disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Reseller sales and service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

ENWW

2 Installation

Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Printer space requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Interface ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Contents 3

Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

General media specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Media input options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Tray 1 media sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Optional 250-sheet tray (tray 2 or tray 3) paper sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Optional 500-sheet tray (tray 3) paper sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Paper sizes for automatic duplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Guidelines for selecting paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Envelope specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Label specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Transparency specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Storing print media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Shipping print media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Paper fillers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Testing media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Tools and suppliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

3 Operation

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Control-panel layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Changing control-panel settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Printing control-panel menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Control-panel menus—user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Retrieve job menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Paper-handling menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Configure device menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Diagnostics menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Control-panel menus—service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Entering service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

4 Printer maintenance

Periodic inspection of parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Cleaning the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Cleaning the fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Cleaning the outside of the printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Managing the print cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

HP print cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Non-HP print cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Print-cartridge authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Print-cartridge storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Print-cartridge life expectancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Checking the supply level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Cartridge-low and cartridge-out conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Contents

4 ENWW

5 Theory of operation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Basic sequence of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Power-on sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Engine control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Laser/scanner system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Image-formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Image-formation process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Electrostatic latent-image-formation block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Developing block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Transfer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Fusing block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Drum-cleaning block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Pickup/feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Single-sided printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Duplex printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Automatic duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Formatter system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Formatter hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Formatter subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Sheet feeders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Media detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Media-size detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Pickup sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Delivery sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Reversing sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Automatic duplexer sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Paper-feed sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

ContentsENWW

6 Removal and replacement

Removal and replacement strategies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Required tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 1

Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

I/O cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Print server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

DIMM cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Rear cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Front cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Top-cover assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Left-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Tray 1 assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Internal assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 0

Tray 1 pickup roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Pickup sensor flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Tray 1 separation pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Tray 2 pickup roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Tray 2 and 250-sheet feeder separation pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Laser/scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Laser/scanner plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

E-label reader. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Formatter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Drive assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Main motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Flat, flexible cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Engine controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Solenoid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Access plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Top-output-bin delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Registration-roller assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Transfer roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Feed belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Trays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

250-sheet feeder and 500-sheet feeder pickup roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

500-sheet feeder separation pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Contents

6 ENWW

7 Troubleshooting

Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

Preliminary operating checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

Basic fault isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

Troubleshooting process flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182

Power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183

Troubleshooting with control-panel messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Using the printer online Help system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Resolving persistent messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Troubleshooting the control-panel display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185

Interpreting control-panel messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186

Media-handling problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199

Printing a configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199

Printing a Jetdirect configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200

Printing a usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201

Printing a supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201

Printing an engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202

Jam troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204

Jam causes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205

Typical jam locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205

Image-formation troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

Check the print cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211

EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211

Image defects unique to the HP LaserJet 2300 series printers . . . . . . . . . . . . . . . . . . . . . .211

Image-defect tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .212

Media troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218

Determine the problem source: print media or printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218

Isolate a paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 8

Isolate a media brand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219

Isolate a media type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220

Evaluate media use practices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224

Evaluate environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224

Communication troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226

Communications check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226

Test message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226

EIO troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226

Troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227

Repetitive defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227

Half-self-test functional check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .228

Performing a self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229

Performing a paper path test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229

Drum-rotation functional check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229

Resetting the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230

Setting the language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230

Reference diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .231

ENWW

Contents

8 Parts and diagrams

Ordering parts and supplies and getting support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 2

Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

Consumables, accessories, and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Common fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Assembly locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Covers and panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Top cover assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Internal components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Internal components (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Internal components (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

Internal components (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

Internal components (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256

Power-supply assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Pickup assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

Engine controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262

PCA locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Trays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

250-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

500-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

Numerical parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

Contents

8 ENWW

Figures

Figure 1. Locations of identification labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Figure 2. Sample identification label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Figure 3. Front and right side. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 4. Back and left side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 5. Top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Figure 6. Side view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Figure 7. Side view (with an optional 250-sheet tray) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Figure 8. Side view (with an optional 500-sheet tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Figure 9. Interface ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Figure 10. Correct double side seam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Figure 11. Incorrect double side seam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Figure 12. Wet test for long, short, and diagonal grain curl . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Figure 13. Measuring curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Figure 14. Control-panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Figure 15. Supplies status page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Figure 16. Engine control system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Figure 17. Laser/scanner system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Figure 18. Image-formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Figure 19. Image-formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Figure 20. Step 1: primary charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Figure 21. Step 2: laser-beam exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Figure 22. Developing block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Figure 23. Step 3: developing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Figure 24. Step 4: transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Figure 25. Step 5: separation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Figure 26. Step 6: fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Figure 27. Step 7: drum cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Figure 28. Step 8: transfer charging roller cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Figure 29. Pickup/feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

Figure 30. Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Figure 31. Automatic duplexer path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Figure 32. Automatic duplexer feed and delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Figure 33. Pickup-feed paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Figure 34. Sheet-feeder pickup and feed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Figure 35. Media-detection sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Figure 36. Removing the print cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Figure 37. Removing tray 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Figure 38. Removing the I/O cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Figure 39. Removing the print server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

Figure 40. Removing the DIMM cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Figure 41. Removing the rear cover (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

Figure 42. Removing the rear cover (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Figure 43. Removing the rear cover (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

Figure 44. Removing the front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Figure 45. Removing the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Figure 46. Removing the top-cover assembly (1 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Figure 47. Removing the top-cover assembly (2 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Figure 48. Removing the top-cover assembly (3 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Figure 49. Removing the left-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Figure 50. Removing the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Figure 51. Removing the tray 1 assembly (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Figure 52. Removing the tray 1 assembly (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

ENWW

Figures 9

Figure 53. Removing the tray 1 assembly (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Figure 54. Removing the tray 1 assembly (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Figure 55. Removing the tray 1 pickup roller (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Figure 56. Removing the tray 1 pickup roller (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Figure 57. Removing the pickup sensor flag. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Figure 58. Removing the tray 1 separation pad (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Figure 59. Removing the tray 1 separation pad (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Figure 60. Removing the tray 1 separation pad (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Figure 61. Removing the tray 2 pickup roller (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Figure 62. Removing the tray 2 pickup roller (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Figure 63. Removing the tray 2 pickup roller (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Figure 64. Removing the tray 2 and 250-sheet feeder separation pad. . . . . . . . . . . . . . . . . 139

Figure 65. Removing the fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Figure 66. Removing the fuser (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Figure 67. Removing the fuser (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Figure 68. Removing the laser/scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Figure 69. Removing the e-label reader (1 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Figure 70. Removing the e-label reader (2 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Figure 71. Removing the e-label reader (3 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Figure 72. Removing the formatter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Figure 73. Removing the drive assembly (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Figure 74. Removing the drive assembly (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Figure 75. Removing the drive assembly (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Figure 76. Removing the main motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Figure 77. Removing the flat, flexible cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Figure 78. Removing the engine controller PCA (1 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Figure 79. Removing the engine controller PCA (2 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Figure 80. Removing the engine controller PCA (3 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Figure 81. Removing the engine controller PCA (4 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Figure 82. Removing the engine controller PCA (5 of 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Figure 83. Removing the solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Figure 84. Removing the access plate (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Figure 85. Removing the access plate (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Figure 86. Removing the access plate (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Figure 87. Removing the power supply (1 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Figure 88. Removing the power supply (2 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Figure 89. Removing the power supply (3 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Figure 90. Removing the power supply (4 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Figure 91. Removing the power supply (5 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Figure 92. Removing the power supply (6 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

Figure 93. Power-supply PCA spring-contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 94. Removing the top-output-bin-delivery assembly (1 of 3) . . . . . . . . . . . . . . . . . . . 169

Figure 95. Removing the top-output-bin delivery assembly (2 of 3) . . . . . . . . . . . . . . . . . . . 170

Figure 96. Removing the top-output-bin delivery assembly (3 of 3) . . . . . . . . . . . . . . . . . . . 171

Figure 97. Removing the registration-roller assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . 172

Figure 98. Removing the registration-roller assembly (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . 173

Figure 99. Removing the transfer roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Figure 100. Removing the feed belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Figure 101. Removing the pickup roller from a 250-sheet or 500-sheet feeder (1 of 2). . . . . 176

Figure 102. Removing the pickup roller from a 250-sheet or 500-sheet feeder (2 of 2). . . . . 177

Figure 103. Removing the 500-sheet feeder separation pad . . . . . . . . . . . . . . . . . . . . . . . . . 178

Figure 104. Troubleshooting process flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Figure 105. Control panel contrast label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Figure 106. Configuration page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

Figure 107. Jetdirect configuration page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

Figure 108. Engine test button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

Figure 109. Engine test page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Figure 110. Image defects examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Figure 111. Repetitive defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Figures

10 ENWW

Figure 112. General printer-component locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .231

Figure 113. Locations of switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232

Figure 114. Locations of sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233

Figure 115. Locations of solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234

Figure 116. Location of motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235

Figure 117. Engine controller PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .236

Figure 118. Power supply PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237

Figure 119. General circuit diagram (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238

Figure 120. General circuit diagram (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239

Figure 121. General timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240

Figure 122. Assembly locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245

Figure 123. Covers and panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246

Figure 124. Top cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248

Figure 125. Internal components (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250

Figure 126. Internal components (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .252

Figure 127. Internal components (3 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .254

Figure 128. Internal components (4 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .256

Figure 129. Power-supply assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .258

Figure 130. Pickup assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .260

Figure 131. Engine controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262

Figure 132. PCA locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263

Figure 133. 250-sheet feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264

Figure 134. 500-sheet feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266

ENWW Figures

Figures

12 ENWW

Tables

Table 1. Features for each configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Table 2. Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Table 3. Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Table 4. Power specifications1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Table 5. Acoustic emissions specifications1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Table 6. Operating environment specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Table 7. Solutions for problem media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Table 8. Envelope specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Table 9. Retrieve job menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Table 10. Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Table 11. Paper-handling menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Table 12. Configure device menu—printing submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Table 13. Configure device menu—print-quality submenu. . . . . . . . . . . . . . . . . . . . . . . . . . .61

Table 14. Configure device menu—system-setup submenu . . . . . . . . . . . . . . . . . . . . . . . . .64

Table 15. Configure device menu—I/O submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Table 16. Configure device menu—resets submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Table 17. Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Table 18. Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Table 19. Basic sequence of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Table 20. Output area jams recommended actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206

Table 21. Paper access area jams—recommended actions . . . . . . . . . . . . . . . . . . . . . . . .207

Table 22. Input-area jams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208

Table 23. Possible causes of frequent jams in the cartridge area . . . . . . . . . . . . . . . . . . . .209

Table 24. Image defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213

Table 25. Adhesive label construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221

Table 26. Envelope construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222

Table 27. Technical support websites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242

Table 28. Consumables, accessories, and supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243

Table 29. Common fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .244

Table 30. Covers and panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247

Table 31. Top cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249

Table 32. Internal components (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .251

Table 33. Internal components (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253

Table 34. Internal components (3 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255

Table 35. Internal components (4 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .257

Table 36. Power-supply assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259

Table 37. Pickup assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261

Table 38. Engine controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262

Table 39. PCA locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263

Table 40. 250-sheet feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .265

Table 41. 500-sheet feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267

Table 42. Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268

Table 43. Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273

ENWW

Tables 13

Tables

14 ENWW

1 Product description

Chapter contents

Printer configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Print-cartridge and toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Laser safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

FCC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Environmental product stewardship program . . . . . . . . . . . . . . . . . . . . . . . . . 25

Protecting the environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Material safety data sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

HP Printing Supplies Environmental Program information. . . . . . . . . . . . 26

Bench-repair warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

HP Express Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Information about ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

World Wide Web. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

HP service parts-information compact disc . . . . . . . . . . . . . . . . . . . . . . . 28

HP support-assistant compact disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Reseller sales and service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ENWW Chapter 1 Product description 15

Printer configurations

The HP LaserJet 2300 series printer is available in six configurations.

Note The illustrations in this guide are based on the HP LaserJet 2300 printer model unless otherwise

stated. To find out which HP LaserJet 2300 configuration you have, look at the label on the front of the printer.

HP LaserJet 2300L

The HP LaserJet 2300L printer prints letter-size paper at speeds up to 20 pages per minute (ppm) or A4-size paper at up to 19 ppm. It comes with a built-in 250-sheet tra y, a parallel and a universal serial bus (USB) port, and 32 MB RAM. The printer is ex pandable, and has one availab le enha nced input/o utput (EIO) slot and t wo dua l inline memo ry module (DIMM) slots f or adding a network print server card, fonts, and memory.

HP LaserJet 2300

The HP LaserJet 2300 printer is the same as the HP LaserJet 2300L printer, except that it prints at speeds up to 25 ppm for letter-size paper and 24 ppm for A4-size paper.

HP LaserJet 2300d

The HP LaserJet 2300d printer is the same as the HP LaserJet 2300 printer, except that the printer comes with 48 MB RAM and automatically duplexes (prints on both sides of paper).

HP LaserJet 2300n

The HP LaserJet 2300n printer is the same as the HP LaserJet 2300 printer, except that it is designed for network users. It comes with a full-featured HP Jetdirect EIO print server card (for connecting to a 10/100Base-TX network) and 48 MB RAM.

HP LaserJet 2300dn

The HP LaserJet 2300dn printer is the same as the HP LaserJet 2300n printer, except that the printer also automatically duplexes (prints on both sides of paper).

HP LaserJet 2300dtn

The HP LaserJet 2300dtn printer is the same as the HP LaserJet 2300dn printer, except that it has an additional 500-sheet tray.

16 Product description ENWW

Printer features

The following table describes the features of the HP LaserJet 2300 series printers.

Fast print speed

● The HP LaserJet 2300L prints on letter-size paper at speeds up to 20

pages per minute (ppm) or A4-size paper at up to 19 ppm.

● All other models print on letter-size paper at speeds up to 25 ppm or

A4-size paper at up to 24 ppm.

Built-in duplexing ● Automatic two-sided (duplex) printing is a standard feature of the

HP LaserJet 2300d, HP LaserJet 2300dn, and HP LaserJet 2300dtn printers.

Print cartridge and status features

● The 6,000-page HP Smart Print Cartridge detects and reports toner

status.

● The no-shake design maximizes toner use.

● The supplies status page provides a toner gauge, page count, and

information about paper sizes that have been used.

Excellent print quality ● FastRes 1200 produces 1200-dpi print quality for fast, high-quality printing

of business text and graphics.

● ProRes 1200 produces 1200-dpi printing for the best quality in line art and

graphic images.

● Adjustable settings optimize print quality.

● The HP Smart Print Cartridge produces crisp, sharp output.

Flexible paper handling

● Use tray 1 (the multipurpose tray) for letterhead, envelopes, labels,

transparencies, custom-sized media, postcards, and heavy paper.

● Use the adjustable 250-sheet tray (tray 2 or tray 3) for standard sizes of

paper.

● Use the 500-sheet tray (tray 3) for letter and A4-size paper.

● Two output bins are available: select either the top output bin or the

rear output bin for the most appropriate output location, depending on media type.

● A straight-through paper path is available from tray 1 to the

rear output bin.

● Built-in automatic two-sided (duplex) printing is available for the

HP LaserJet 2300d, HP LaserJet 2300dn, and HP LaserJet 2300dtn printers.

Expandability

● A 250-sheet or 500-sheet tray is av ailab le, so that you do not have to add

paper as often.

● One EIO card slot is available for interface.

● Three DIMM slots are available, two for adding memory and fonts.

Printer languages and fonts

● Fast printing performance, advanced font and graphics technologies, and

advanced imaging capabilities are benefits of the PCL 6 printer language. The PCL 6 technology also includes 45 scalab le TrueType™ fonts and one bitmapped line printer font.

● The other available languages and fonts are HP PCL5e and PostScript

(PS) 3 emulation, which includes 35 built-in PS language fonts.

● The printer automatically determines and switches to the appropriate

language for the print job.

ENWW Chapter 1 Product description 17

Interface connections and networking

● The printer includes a bidirectional ECP type-B parallel port

(IEEE-1284 compliant) and a USB port (compatible with 1.1 and 2.0 lowand full-speed certified devices)

● The printer has an EIO slot for HP Jetdirect EIO print servers so that you

can connect quickly and easily.

Enhanced memory and memory expansion

Energy savings

Economical printing

The table below gives a quick summary of the features for each model.

Table 1. Features for each configuration

● The HP LaserJet 2300 series printers come with either 32 MB or 48 MB

of memory and can be expanded to 288 or 304 MB, respectively, with the available memory (DIMM) slots. Most documents can be printed by using the standard amount of printer memory.

● The printer automatically conserves electricity by reducing power

consumption when it is not printing.

● When the PowerSave feature is activated, the printer conser ves energy

when it is not in use.

● As an ENERGY STAR

that this product meets E

● N-up printing saves paper by printing multiple pages on one sheet of

partner, Hewlett-Packard Compan y has determined

NERGY STAR

guidelines for energy efficiency.

media.

● Automatic two-sided printing with the built-in duplexer saves paper (the

built-in duplexer is included only with the HP LaserJet 2300d, HP LaserJet 2300dn, and HP LaserJet 2300dtn printers).

● Printing in EconoMode saves toner.

Features

Standard memory Maximum memory

PostScript 3

HP LaserJet 2300L

32 MB 288 MB

HP LaserJet 2300

32 MB 288 MB

HP LaserJet 2300n

48 MB 304 MB

HP LaserJet 2300d

48 MB 304 MB

HP LaserJet 2300dn

48 MB 304 MB

HP LaserJet 2300dtn

48 MB 304 MB

Standard Standard Standard Standard Standard Standard

emulation Automatic duplex

N/A N/A N/A Standard Standard Standard

printing 250-sheet feeder Standard Standard Standard Standard Standard Standard 500-sheet feeder Optional Optional Optional Optional Optional Standard

18 Product description ENWW

Identification

The model number and printer serial number are listed on ide nt ifica tion la bels lo cate d in side t he top cover (callout 1) and on the rear output bin (callout 2).

Figure 1. Locations of identification labels

The model number is alphanumeric. The serial nu mber contains inf ormation about the country of origin, as well as the revision level and the production code of the printer. An example of a serial number is USBB123456.

The identification label on the back of the printer also contains power rating and regulatory information. See figure 2.

Note The power rating and regulatory information vary by country/region.

Figure 2. Sample identification label

ENWW Chapter 1 Product description 19

Specifications

Physical specifications

Table 2. Physical specifications

Height 259.7 mm (10.2 inches) 397.2 mm (15.6 inches) Width 412.8 mm (16.2 inches) 412.8 mm (16.2 inches) Depth (body) 450 mm (17.7 inches) 450 mm (17.7 inches)

HP LaserJet 2300L, 2300, 2300n, 2300d, 2300dn

HP LaserJet 2300dtn (with 500-sheet tray)

Weight (with print cartridge)

14.3 kg (31.6 lb) 18.9 kg (41.6 lb)

Electrical specifications

WARNING! Po wer 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 3. Electrical specifications

Electrical specifications 110-volt models 220-volt models

Power requirements 110 to 127 V (+/- 10%)

50/60 Hz (+/- 3 Hz)

Minimum recommended circuit capacity

5.0 amps 2.5 amps

220 to 240 V (+/- 10%) 50/60 Hz (+/- 3 Hz)

Power consumption

Table 4. Power specifications

Average power consumption (in watts)

Printing

Product model

HP LaserJet 2300L 394 W — 8.8 W 8.6 W 0 W HP LaserJet 2300 — 426 W 8.8 W 8.4 W 0 W HP LaserJet 2300n — 426 W 9.6 W 9.3 W 0 W HP LaserJet 2300d — 426 W 8.8 W 8.4 W 0 W HP LaserJet 2300dn — 426 W 9.6 W 9.3 W 0 W HP LaserJet 2300dtn — 426 W 9.6 W 9.3 W 0 W 1 Values are subject to change. See http://www.hp.com/support/lj2300

2 The PowerSave default activation time is 15 minutes.

(20 ppm)

Printing (25 ppm) Standby PowerSave2Off

for current information.

20 Product description ENWW

Acoustic emissions

Table 5. Acoustic emissions specifications

Sound power level Declared per ISO 9296

Printing (HP LaserJet 2300L at 20 ppm)

Printing (all other models at 25 ppm)

PowerSave/standby (all models)

= 6.6 bels(A)

WAd

= 6.7 bels(A)

WAd

Inaudible

Sound pressure level, bystander position Declared per ISO 9296

Printing (HP LaserJet 2300L at 20 ppm)

Printing (all other models at 25 ppm)

PowerSave/standby (all models)

Inaudible

= 52 dB(A)

pAm

Inaudible

Sound pressure level, operator position Declared per ISO 9296

Printing (HP LaserJet 2300L at 20 ppm)

Inaudible

Printing (all other models at 25 ppm)

PowerSave/standby (all models)

1 Va l u es are subject to change. See http://www.hp.com/support/lj2300 2 In standby, no mechanical parts are moving and therefore no sounds are made.

= 59 dB(A)

pAm

Inaudible

for current information.

Operating environment

Table 6. Operating environment specifications

Environmental condition Printing Storage/standby

Temperature (printer and print cartridge)

Relative humidity 10 to 80 percent 10 to 90 percent

15 to 32.5 degrees C (59 to 90.5 degrees F)

-20 to 40 degrees C (-4 to 104 degrees F)

ENWW Chapter 1 Product description 21

Product overview

Top cover

Tray 1

Tray 2

Top output bin

I/O cover

Figure 3. Front and right side

Rear output bin

Control panel

Power connector

DIMM cover

Power switch

Figure 4. Back and left side

22 Product description ENWW

Safety information

Print-cartridge and toner safety

For information about print-cartridge and toner safety, see the Toner Cartridge Material Safety Data Sheet (MSDS), which can be obtained at http://www.hp.com/go/msds

Handling and storage

WARNING! Keep print cartridges and toner particles away from excessive heat, sparks, and open flames.

If toner is spilled, avoid breathing in toner particles. Inhalation of toner particles causes respiratory-tract irritation. Vacuum or sweep the material into a bag or other sealed container. A vacuum specifically designed for cleaning toner can be used if it is capable of filtering fine particles (5 microns in diameter).

WARNING! Do not vacuum toner using a con v entio nal v acu um. Toner particles used in this product might be

too fine for effective vacuuming and could result in damage to a conventional vacuum. Dispose of waste toner in accordance with local requirements. Do not discharge toner particles

in drains.

First aid measures

● Ingestion. If you ingest toner, rinse your mouth out thoroughly with water and drink several

glasses of water. Get medical attention if symptoms occur.

● Inhalation. If you inhale toner par ticles, move to fresh air immediately. If symptoms occur,

consult a physician.

● Eye contact. If toner comes in contact with your ey es, immediat ely flush the ey es with plenty

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

● Skin contact. If toner spills on your skin, remove as much toner as possible with a dry

tissue, and then wash with cold water.

Clothing contact

Note Toner can stain clothing. Hot water or heat (such as heat from a clothes dryer) can cause toner to

melt and permanently fuse to clothing. Clothing is best cleaned by removing as much toner as possible with a dry tissue, and then

washing with cold water. Air-dry the clothing.

ENWW Chapter 1 Product description 23

Laser safety

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration has implemented regulations for laser products manufactured since August 1,

1976. Compliance is mandatory for products that are marketed in the United States. The printer is certified as a Class 1 laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Pe rformance Standard according to the Radiation Control for Health and Safety Act of 1968.

Because radiation emitted inside the printer is completely confined within protective housings and external covers, the laser beam cannot escape during an y phase of normal user operation.

CAUTION Using controls, making adjustments, bypassing safety switches, or performing procedures other

than those specified in this service manual can result in exposure to hazardous radiation.

Regulatory information

For regulatory information and requirements, please see the user guide.

FCC regulations

For FCC regulations, please see the user guide.

Declaration of conformity

For the declaration of conformity, please see the user guide.

24 Product description ENWW

Environmental product stewardship program

Protecting the environment

Hewlett-Packard Company is committed to providing quality products in an environmentally sound manner. Th is prod uct has been d esigned with several attributes that minimize impacts on our environment.

Ozone production

This product generates no appreciable ozone gas (O3).

Energy consumption

Energy usage drops significantly while the printer is in PowerSave mode, which saves natural resources and saves money without affecting the performance of the printer. This product qualifies for E energy-efficient office products.

NERGY STAR

, a voluntary program established to encourage the development of

NERGY STAR

E Agency. As an E product meets the E

http://www.epa.gov/energystar/

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

NERGY STAR

partner, Hewlett-Packard Company has determined that this

guidelines for energy efficiency. For more information, see

Toner consumption

EconoMode uses significantly less toner, which might extend the life of the print cartridge.

Paper use

This product’s automatic two-sided (duplex) printing feature and n-up printing capability (multiple pages printed on one sheet of paper) can reduce paper usage and the resulting demands on natural resources.

Plastics

Plastic parts more than 25 grams in weight are marked accor ding t o int ernational standards tha t enhance the ability to identify plastics for recycling purposes at the end of the product’s life.

HP LaserJet printing supplies

In many countries/regions, this p roduct’ s p rinting supplies (f or e xample , the print cartridge, drum, and fuser) can be returned to HP through the HP Printing Supplies Returns and Recycling Program. An easy-to-use takeback program is available in more than 48 countries/regions. Multilingual program information and instruction are included in every new HP LaserJet print cartridge and consumables package.

Paper

This printer is suited for the use of recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Print Media Guide. Also, this printer is suitable for the use of recycled paper according to DIN 19309.

ENWW Chapter 1 Product description 25

Material safety data sheet

Material safety data sheets (MSDS) can be obtained by contacting the HP LaserJet Supplies website at http://www.hp.com/go/msds

HP Printing Supplies Environmental Program information

Since 1990, the HP Printing Supplies Returns and Recycling Program has collected millions of used LaserJet print cartridges that otherwise might have been discarded in the world’s landfills. The HP LaserJet print cartridges and consumables are collected and bulk-shipped to our resource and recovery partners, who disassemble the cartridges for recycling. After a thorough quality inspection, selected parts are reclaimed for use in new cartridges. Remaining materials are separated and converted into raw materials for use by other industries to make a variety of useful products.

U.S. returns

For a more environmentally-responsible return of used cartridges and consumables, HP encourages the use of bulk returns. Simply bundle two or more cartridges together and use the single, pre-paid, pre-addressed UPS label that is supplied in the package. For more information, call (1) (800) 340-2445 or visit the HP LaserJet Supplies website at

http://www.hp.com/recycle

Non-U.S. returns

Customers should call their local HP sales and service office or visit http://www.hp.com/recycle for information regarding availability of the HP Supplies Returns and Recycling Program.

26 Product description ENWW

Service approach

Bench-repair warranty

The warranty for this product is “return to bench” for a period of one year from the date of purchase. This means that customers who need warranty repair must return their printer to an HP repair center or an Authorized Service Provider (ASP). See “Reseller sales and service support” on page 28.

HP Express Exchange

Through Customer Care Centers in the United States and Canada, custo mers ha ve an option to initiate Express Exchange. Under this option, customers can have a factory-refurbished printer sent to them within 24 hours.

1 The customer contacts the local HP Customer Care Center listed in the product

documentation. A technician troubleshoots the situation and determines whether the printer has actually failed. If so, the technician refers the customer to the HP Service Center.

2 A representative from the service center requests product and customer information. In

some regions, collateral might also be requested.

3 Hewlett-Packard Company ships a refurbished replacement unit to arrive the next day.

(Geographic distance might prevent next-day shipping.) 4 The customer sends the defective printer to Hewlett-Packard at HP's expense. Customers with onsite support service provided by HP should work directly with the local

Customer Care Center instead of following the steps outlined here. Exchanged units carry the remainder of the original unit’s warranty or a 90-day warranty,

whicheve r is greater. The faster turnaround from HP Express Exchange minimizes downtime over traditional service programs that require the user to ship the failed unit to the manufacturer and then wait f or it to be repaired an d returned. Because HP pa ys the shipp ing charges , th e user incurs no hidden costs for the service.

Note For warranty information and requirements, please see the user guide.

Information about ordering

"Ordering parts" in chapter 8 of this manual contains factory-replacable unit (FRU) and accessory part numbers. Replacement parts can be ordered from the HP Customer Services and Support Organization.

Use only accessories that are specifically designed for this printer. Order accessories from an authorized service or support provider.

ENWW Chapter 1 Product description 27

World Wide Web

Printer drivers, updated HP printer software, and product and support information can be obtained from the following URL: in the U.S., http://www.hp.com/support/lj2300

Printer drivers can be obtained from the following sites:

● China, ftp://www.hp.com.cn/support/lj2300

● Japan, ftp://www.jpn.hp.com/support/lj2300

● Korea, http://www.hp.co.kr/support/lj2300

● Taiwan, http://www.hp.com.tw/support/lj2300

or the local driver website, http://www.dds.com.tw

HP service parts-information compact disc

This powerful, CD-R OM-based parts-information tool is designed to giv e users f a st, easy access to parts information, such as pricing and recommended stocking lists, for a wide range of HP products. To subscribe to this quarterly service in the U.S. or Canada, call (1) (800) 336-5987. In Asia Pacific countries/regions , call (65) 740- 4484. P arts identification and pricing info rmation can also be found on the World Wide Web at http://www.hp.com/go/partsinfo

HP support-assistant compact disc

This support tool offers a comprehensive online information system that is designed to provide technical and product information about Hewlett-Packard products. To subscribe to this quarterly service in the U.S. or Ca na da, call ( 1) (8 00) 45 7- 17 62. I n Hon g Kong SAR, Indonesia, Malaysia, or Singapore, call Mentor Media at (65) 740-4477.

Reseller sales and service support

The HP Customer Care Center is available to assist resellers and service technicians. You can reach this support center in the U.S. or Canada by calling (1) (800) 544-9976.

HP authorized resellers and support

To locate authorized HP resellers and support, call (1) (800) 243-9816 in the U.S. or (1) (800) 387-3867 in Canada.

HP service agreements

Call (1) (800) 743-8305 in the U.S. or (1) (800) 268-1221 in Canada.

Other areas

Outside of North America and Europe, contact your local HP sales office for assistance in obtaining technical support for resellers and service technicians.

28 Product description ENWW

2 Installation

Chapter contents

Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Printer space requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Interface ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

General media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Media input options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Tray 1 media sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Optional 250-sheet tray (tray 2 or tray 3) paper sizes . . . . . . . . . . . . . . . 36

Optional 500-sheet tray (tray 3) paper sizes. . . . . . . . . . . . . . . . . . . . . . . 37

Paper sizes for automatic duplexing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Guidelines for selecting paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Envelope specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Label specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Transparency specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Storing print media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Shipping print media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Paper fillers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Testing media specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Tools and suppliers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

ENWW 2 Installation 29

Site requirements

Operating environment

The electrical and environmental specificatio ns must be maintained to ensure the correct operation of this printer. Consider the following points before installing the printer:

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

● Install on a level, flat, and continuous surface that can support the printer’s weight. Make

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

● Ensure adequate power supply circuitry (see “Electrical specifications” on page 20).

● Install where there is stable temperature and humidity, with no abrupt changes (away from

water sources, humidifiers, air conditioners, refrigerators, or other major appliances). See “Operating environment” on page 21.

● Install away from direct sunlight, areas with vibration, open flames, ultr asonic heaters,

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

● Maintain enough space around the printer for proper access an d ventilation. See “Printer

space requirements” on page 31.

30 Installation ENWW

Printer space requirements

Figure 5. Top view

450.3 mm

(17.73 inches)

412.8 mm (16.25 inches)

Figure 6. Side view

961.7 mm (37.86 inches)

407.5 mm

(16 inches)

ENWW 2 Installation 31

Figure 7. Side view (with an optional 250-sheet tray)

487.4 mm (19.2 inches)

543.4 mm (21.4 inches)

Figure 8. Side view (with an optional 500-sheet tray

32 Installation ENWW

Interface ports

The HP LaserJet 2300 printer has two interface ports:

● IEEE-1284B Type B parallel port

● USB port (compatible with 1.1 and 2.0 lo w- and full-speed certified devices)

The HP LaserJet 2300n, HP LaserJet 2300dn, and HP LaserJet 2300dtn printers also include an HP Jetdirect EIO print server card that contains a 10/100Base-TX port. You can purchase an HP Jetdirect EIO print server card for the othe r HP LaserJet 2300 series printers. See Chapter 8 for inf ormation about ordering accessories.

Parallel port

(IEEE-1284B)

USB port

Figure 9. Interface ports

Network EIO port

(RJ-45)

ENWW 2 Installation 33

Media specifications

General media specifications

The HP LaserJet 2300 series printers accept a variety of media, such as cut-sheet paper (including up to 100 percent recycled-fiber-content paper), envelopes, labels, transparencies, and custom-size paper. Properties such as weight, composition, grain, an d moisture co ntent ar e important factors that aff ect printer per f ormance and output quality. Media that does not m eet the guidelines outlined in this manual can cause the following problems:

● poor print quality

● increased jams

● premature wear on the printer, requiring repa ir

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 Hewlett-Packard has no control.

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

requiring repair. This r epair is not covered b y the Hewlett-P ackard warranty or service agreements .

Note Before purchasing large quantit ies of paper, make sure the paper meets the requir ements specified

in this service manual and in the HP LaserJet Printer Family Print Media Guide. Always test print media before buying large quantities. For more information see the HP LaserJet Printer Family Print Media Guide at http://www.hp.com/support/ljpaperguide.

34 Installation ENWW

Media input options

The printer comes with up to three paper trays. The printer automatically selects the requested media from the correct tra y if t hat media is loaded in any of the tra ys . If the media is not a vailab le , a message on the control panel prompts you to select the media or tray that you want instead.

Tray 1

Tray 2

(250-sheet tray)

Tray 3

(500-sheet tray,

if installed)

Tray 1 media sizes

Tray 1, a multipurpose tray, adjusts for sizes from 76 by 127 mm (3 by 5 inches) to a legal-size sheet, 216 by 356 mm (8.5 by 14 inches). Tray 1 should be used when printing the following types of media:

● envelopes (see “Envel ope specifications” on page 39)

● labels (see “Label specifications” on page 41)

● transparencies (see “Transparency specifications” on page 42)

● custom-sized media, cardstock, or postcards

Tray 1 Dimensions Weight Capacity

Minimum size (custom) 76 by 127 mm

(3 by 5 inches)

Maximum size (custom) 216 by 356 mm

(8.5 by 14 inches)

Transparency Minimum:

76 by 127 mm (3 by 5 inches)

Labels Thickness:

Envelopes Up to 90 g/m

Maximum: 216 by 356 mm (8.5 by 14 inches

60 to 163 g/m (16- to 43-lb bond)

Thickness: .10 to .14 mm (0.0039 to 0.0055 inches)

.10 to .14 mm (0.0039 to 0.0055 inches)

(16 to 24 lb)

100 sheets of 75 g/m (20-lb bond) paper

75 (typical)

50 (typical)

Up to 10

ENWW 2 Installation 35

Optional 250-sheet tray (tray 2 or tray 3) paper sizes

A 250-sheet tra y (tray 2) can be purchased as an accessory if the printer did not come with a tray 3. Optional 250-sheet trays have setti ngs for the following paper sizes:

● A4

● A5

● B5 (ISO)

● B5 (JIS)

● Letter

● Legal

● Executive

● 8.5 by 13 inches (FoolsCap, Folio, JIS Exec)

CAUTION Load only paper in the optional 250-sheet tray. Other types of print media, such as labels or

transparencies, can jam if you try to print on them from either the optional 250-sheet tray or the optional 500-sheet tray. Load other types of media into tray 1 only.

See the user guide for information about loading media.

Tray 2 and tray 3 Dimensions Weight Capacity

Letter 216 by 279 mm

(8.5 by 11 inches)

A4 210 by 297 mm

(8.3 by 11.7 inches)

60 to 105 g/m

(16- to 28-lb bond)

250 sheets of 75 g/m (20-lb bond) paper

Executive 191 by 267 mm

(7.3 by 10.5 inches)

Legal 216 by 356 mm

(8.5 by 14 inches)

B5 (ISO) 176 by 250 mm

(6.9 by 9.9 inches)

B5 (JIS) 182 by 257 mm

(7.2 by 10 inches)

A5 148 by 210 mm

(5.8 by 8.2 inches)

8.5 by 13 in 216 by 330 mm

(8.5 by 13 inches)

36 Installation ENWW

Optional 500-sheet tray (tray 3) paper sizes

A 500-sheet tray can be purchased as an accessory if the printer did not come with a tray 3. It has settings for the following paper sizes:

● A4

● Letter

CAUTION Load only paper in the optional 500-sheet tray. Other types of print media, such as labels or

transparencies, can jam if you try to print on them from either the optional 250-sheet tray or the optional 500-sheet tray. Load other ty pes of media into tray 1 only.

See the user guide for information about loading media.

Tray 3 (500-sheet tray) Dimensions Weight Capacity

Letter 216 by 279 mm

(8.5 by 11 inches)

A4 210 by 297 mm

(8.3 by 11.7 inches)

60 to 105 g/m (16- to 28-lb bond)

500 sheets of 75 g/m (20-lb bond) paper

Paper sizes for automatic duplexing

The automatic duplexer has settings for the following paper sizes:

● Letter

● A4

● Legal

● 8.5 by 13 in

See the user guide for information about loading media.

Duplexer Dimensions Weight

Letter 216 by 279 mm

(8.5 by 11 inches)

A4 210 by 297 mm

(8.3 by 11.7 inches)

Legal 216 by 356 mm

(8.5 by 14 inches)

8.5 by 13 in 216 by 330 mm

(8.5 by 13 inches)

60 to 105 g/m (16- to 28-lb bond)

ENWW 2 Installation 37

Guidelines for selecting paper

For best results, use conventional 80-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.

If you are unsure about what type of paper y ou are loadin g (such as bond or recycled), chec k the label on the package of paper.

The following prob lems with paper can cause print-quality deviation s, jamming, or damag e to the printer.

Table 7. Solutions for problem media

Symptom Problem with paper Solution

Poor print quality, toner adhesion, or problems with feeding

Dropouts, jamming, or curl Stored incorrectly

Increased gray background shading, or printer wear

Excessive curl or problems with feeding

Jamming or damage to printer Cutouts or perforations Do not use paper with cutouts or

Problems with feeding Ragged edges

Too moist, too rough, too heavy, too smooth, or embossed; faulty paper lot

Side-to-side variability of paper Too heavy Use lighter paper; open the rear

Too moist, wrong grain direction, or short-grain construction

Side-to-side variability of paper

T ry another kind of paper, between 100 and 250 Sheffield, and with 4 percent to 6 percent moisture content

Store paper flat in its moistureproof wrapping

Turn paper over

output bin Open the rear output bin;

use long-grain paper Turn paper over

perforations Use good, high-quality paper

Turn paper over

38 Installation ENWW

Envelope specifications

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

● Weight: The weight of the envelope paper should not exceed 105 g/m

can occur.

● Construction: Before printing, env elopes should lie flat with less than 6 mm (0.24 inch) curl,

and should not contain air.

● Condition: Envelopes should not be wrinkled, nicked, or otherwise damaged.

● Temperature: Envelopes should be compatible with the heat and pressure of the printer.

● Size: Envelopes must be withi n the following size ranges: minimum of 76 b y 127 mm (3 by 5

inches) and maximum of 216 by 356 mm (8.5 by 14 inches).

Note Use only tray 1 to print on envelopes. Send envelo pe s straigh t thr o ug h th e printer, entering at

tray 1 and exiting from the rear output bin.

CAUTION Jams might occur when printing on media that is shorter than 178 mm (7 inches). This can result

from environmental conditions. See "Evaluate environmental conditions" in chapter 7. Envelopes might meet the general specifications that are listed in table 8 and still not print

satisfactorily because of the printing en vironment or other v ariables o ver which HP has no con trol.

(28 lb) or jamming

Table 8. Envelope specifications

Description Specification

Paper Paper that is used for envelope construction must meet the paper specifications

listed in this manual and the HP LaserJet Printer Family Print Media Guide.

Basis weight 60 to 100 g/m2 (16 to 27 lb), single thickness. Jamming might result if 100-

(27-lb) weight is exceeded. See “Moisture-content field test” on page 46.

Finish Avoid using envelopes that contain adhesive that is exposed to the printer.

Envelopes must be folded accurately so that no more than two thicknesses of paper occur anywhere along the leading edge. All folds must be well scored and sharply creased, and construction must be tight (not baggy). Avoid using envelopes that are stuck together with excess seam gum. See “Furnish (fibercomposition) field test” on page 48.

Fusing compatibility All inks, adhesives, and other materials that are used in the envelope must be

compatible with the heat and pressure of the fusing process. Materials must not discolor, melt, offset materials, or release hazardous emissions when heated to 200 degrees C (392 degrees F) for 0.1 second. See “Fusing-compatibility field test” on page 48.

Curl (Pre-printed) Envelopes must lie flat, with no more than 6 mm (0.25 inch) of curl across the

entire surface. See “Curl field test” on page 47.

Caliper Caliper of 0.084 to 0.14 mm (.0034 inch to .0056 inch), single thickness. See

“Caliper field test” on page 46.

g/m

ENWW 2 Installation 39

Envelopes with adhesive strips or flaps

Envelopes with a peel-off adhesive strip or with more than one flap that folds over to seal must use adhesives that are compatible with the heat and pressure in the printer.

CAUTION The extra flaps and strips might cause wrinkling, creasing, or jams, and can even damage the

fuser and separation pad.

Envelope storage

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

Envelopes with double side seams

Double-side-seam construction has vertical seams at both ends of the envelope rather than diagonal seams. This style might be more likely to wrinkle. Be sure that the sea m extends all the way to the corner of the envelope, as illustrated.

Figure 10. Correct double side seam

Figure 11. Incorrect double side seam

Envelope margins

The following gives typical address margins for a commercial #10 or DL envelope.

Type of address Top margin Left margin

Return address 15 mm (0.6 inch) 15 mm (0.6 inch) Delivery address 51 mm (2 inches) 89 mm (3.5 inches)

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

envelope. Avoid printing over the area where the envelope seams meet.

40 Installation ENWW

Label specifications

When selecting labels, consider the quality of each component:

● Adhesives: The adhesive material should be stable at 200 degrees C (392 degrees F),

which is the printer’s fusing temperature.

● Arrangement: Only use labels that have no exposed backing between them. Labels can

peel off sheets that have spaces between the labels, causing jams.

● Curl: Before printing, labels must lie flat with no more than 13 mm (0.5 inch) of curl in any

direction.

● Condition: Do not use labels that have wrinkles, b ub bles, or other indications of separation.

Note Use only tray 1 to print on labels. Send labels straight through the printer, entering at tray 1 and

exiting from the rear output bin

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 or print on a partial sheet of labels.

Description Specification

Adhesive Adhesive must not be on any external surfaces of the label before, during, or

after printing. Label construction and die-cutting must not allow labels to peel off during transport, printing, or fusing.

Caliper Caliper must not exceed 0.19 mm (0.007 inch). See “Caliper field test” on

page 46.

Curl In ream: flat within 13 mm (0.5 inch). See “Curl field test” on page 47. Surface resistivity 2.0 to 15 by 10 to the 10th ohm squared. See “Fusing-compatibility field test” on

page 48.

Volume resistivity 1.2 to 15 by 10 to the 11th ohm-centimeter. See “Fusing-compatibility field test”

on page 48.

Finishing precision Cut sheet within 0.79 mm (0.031 inch) of nominal and +0.20 degrees square. Fusing compatibility All adhesives, carrier sheets, top sheets, and other materials that are used in

label construction must be compatible with the heat and pressure of the fusing

process. Materials must not discolor, melt, offset materials, or release hazardous

emissions when heated to 200 degrees C (392 degrees F) for 0.1 second. See

“Fusing-compatibility field test” on page 48.

Packaging Store in moisture-proof wrap to preserve properties. Shelf life One year, maximum, stored at 22 degrees C (72 degrees F) and 50 percent

relative humidity.

ENWW 2 Installation 41

Transparency specifications

Transparency construction is critical.

Note Use only tray 1 to print transparencies. Send transparencies straight through the printer , entering

at tray 1 and exiting from the rear output bin.

CAUTION Transparencies that are used in the printer must be able to withstand 200 deg rees C

(392 degrees F), the printer’s fusing temperature. To avoid damaging the printer, use only transparencies that are recommended for use in laser

printers.

Description Specification

Surface resistivity 2.0 to 15 by 10 to the 10th ohm squared. See “Fusing-compatibility field test” on

page 48.

Volume resistivity 1.2 to 15 by 10 to the 11th ohm-cm. See “Fusing-compatibility field test” on

page 48.

Finishing precision Cut sheet within 0.79 mm (0.031 inch) of nominal and +0.20 degrees square. Fusing compatibility Transparency materials must be compatible with the heat and pressure of the

fusing process. Materials must not discolor, melt, offset materials, or release

hazardous emissions when heated to 200 degrees C (392 degrees F) for 0.1

second. See “Fusing-compatibility field test” on page 48.

Caliper Caliper of 0.100 to 0.110 mm (0.0039 to 0.0043 inch). See “Caliper field test” on

page 46.

42 Installation ENWW

Storing print media

Ideally, the printing and media storage environment should be at or near room temperature, and not 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 paper package is opened and used, it loses moisture, which causes streaks and smudging in the printed output. Humid weather or water coolers can increase the humidity in a room. As paper is opened and used, it absorbs any excess moisture, which causes light print and dropouts in the printed output. Also, as paper loses and gains moisture, it can distort. This can cause jams.

As a result, paper storage and handling are as important as the paper-making process itself. Paper storage environmental conditions directly affect the feed operation.

Users should not purchase more paper than can be easily used in a short time (about three months). Paper stored f or long periods might e xperience heat an d moisture e xtrem es, which can cause damage. Planning is important to prevent damage to a large supply of paper.

Unopened paper in sealed reams 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 barrier.

A well-maintained paper-storage environment ensures optimum printer performance. The required environmental conditions are 20 degrees to 24 degreesC (68 degrees to 75 degrees F), with relativ e humidity of 45 percent to 55 per cent. The f ollowing guidelines should be helpful when evaluating the papers storage environment:

● Paper should be stored at or near room temperature.

● The air should not be too dry or too humid.

● The best way to store an opened ream of paper is to rewrap it tightly in its moisture-proof

wrapping. If the printer en vironment is sub ject to extremes, unwrap only the amount of paper that will be used during the day's operation to prevent unwanted moisture changes.

Shipping print media

When shipping print media through different environments, plastic-wrap all cartons on the shipping pallet. When shipping media across bodies of water, also wrap individual cartons. The packaging must protect the media from physical damage.

Paper fillers

Additional chemicals and fillers are frequently added to paper during the manufacturing process. These can affect the paper strength, pick resistance, printability, bulk, feel, and color.

An emulsion that contains wax, rosin, starch, or other non-w ater solub le materials is add ed to the paper pulp to help control the penetration of water and other liquids. Dyes are added and the paper might be bleached. Bleaching is a multistep process that uses chemicals, such as hydrogen peroxide and chlorine dioxide.

Finely ground fillers, such as clay, talc, and calcium carbonate, might be added to even out the “peaks and valleys” that occur in the pa per mixture, and to serve as brighteners . Ov er time, these fillers can build up on internal assemblies of the printer such as rollers or the print cartridge. This buildup can eventually cause jams and print defects. To minimize this risk, periodically clean the printer according to procedures (see “Cleaning the printer” on page 75).

ENWW 2 Installation 43

Testing media specifications

The following tests describe ways to make sure that the media meets the specifications listed in this manual and the HP LaserJet Printer F amily Print Media Guide. See “Tools and suppliers” on page 49 for help in obtaining tools to perform these tests.

Basis-weight field test

The basis weight should be indicated on the r eam label. If the label is n ot av ailab le , a simple field test can identify the basis weight of paper. The basis weight of paper is equal to the weight of 2000 sheets of paper, or four full reams. Weigh a full ream on a postal scale and then multiply that weight by four. Or, weigh 10 sheets of paper, divide that weight by 10, multiply by 2000, and then divide by 16.

Amount Formula

4 reams weight = basis weight 1 ream weight x 4 = basis weight 10 sheets (weight divided by 10) x 2000 and then divided by 16 = basis weight

Note Example:

10 sheets weigh 1.6 ounces

0.16 ounce x 2000 = 320 ounces 320 ounce ÷ 16 ounce/lb = 20 lb paper

44 Installation ENWW

Paper weight equivalence table

Use this table to determine approximate equivalent points in weight specifications othe r th an U.S. bond weight. For example, to determine the equivalent of 20-lb U.S. bond-weight paper in U.S. cover-weight 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-b media. Shaded areas indicate a standard weight for that grade.

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/ m2)

Japan metric weight (g/ m2)

1 16 41 22 27 33 37 60 60 2 17 43 24 29 35 39 64 3 4 21 54 30 36 44 49

20 50 28 34 42 46 75 75

80 80

5 22 56 31 38 46 51 81 6 7 27 68 37 45 55 61 8 9

24 60 33 41 50 55 90 90

100 100

28 70 39 49 58 65 105 105

32 80 44 55 67 74 120 120

10 34 86 47 58 71 79 128 11 12

.18 39 100 55 67 82 91 148 148

36 90 50 62 75 83 135 135

13 .19 42 107 58 72 87 97 157 14

.20 43 110 60 74 90 100 163 163

128

157

15 .23 47 119 16 53 134 74 90

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

65 80 97 108 176 176

110 122 199 199

Metric Sizes

For metric-size paper (A4), use this method to determine basis weight: Take 16 sheets of A4 paper and weigh them. One square meter of paper co ntains app ro xim ately

16 A4 size sheets. Compare this weight to the appropriate weight in the preceding table.

ENWW 2 Installation 45

Caliper field test

The specified caliper differs with the type of media used. See “Operating environment” on page 30.

Use a micrometer to measure for caliper in th e field.

CAUTION Never use the coarse-adjustment end of t he microm eter when measuring for caliper. The coarse

adjustment will compress the paper fibers, resulting in an inaccurate reading. For example, if the fibers are compressed, 6 mil paper could measure as few as 3 mils . Always use the fine adjustm ent to measure for caliper.

Using the fine adjustment, slide the micromet er along the edge of the paper and measure at one end. To double-check the accuracy of the reading, always measure again at the opposite end of the paper.

Paper-finish field test

Paper finish, or smoothn ess, can be accurate ly measured with a Sheffield meter. If this tool is not available , use a new U.S. dollar bill as a benchmark for comparing paper texture. A dollar bill has a finish of 350 Sheffields, which is 100 over specifications. If paper f eels as rough as a dollar bill, it is recommended that users avoid continually using this paper in the printer.

Moisture-content field test

Use paper with 4 percent to 6 percent moisture content. A ream or sheet of paper can be measured with a moisture meter. In general, only evaluate the

customer’s storage environment to determine if excess moisture or dryness is the cause of a problem with paper.

46 Installation ENWW

Grain field test

The grain direction is usually specified on the ream label (written out “long” or “short”). The paper dimensions listed on the label also indicate grain di rection . For example, the label for short-grain letter-size paper reads “11 by 8.5" and for long-grain paper reads “8.5 by 11."

If the grain direction is not included on the ream label, it can be determined by using a simple w et test. Cut a small square from the corner of a sheet of paper, wet it, and observe the manner in which it curls.

Envelopes should have a diagonal grain, which gives them the best stability. To determine this, cut a square section from one corner of an env elope . We t this section and observe the mann er in which it curls. Two opposite corners should curl toward each other.

Figure 12. Wet test for long, short, and diagonal grain curl

Curl field test

To check for paper curl, place a single sheet of pape r onto a flat surface and measure curl at the greatest deflection by holding a ruler perpendicular to the flat surface.

Figure 13. Measu ri n g curl

ENWW 2 Installation 47

Cut-edge condition field test

Use a loupe or maginfying glass to observe the condition of the cut edge . Under magn ification, a good edge appears even. A poorly cut edge shows fraying, jagged edges, compressed fibers, and other damage.

Furnish (fiber-composition) field test

Use paper made from 100 percent chemical wood pulp and/or cotton fiber. Recycled paper that contains no more than 5 percent groundwood is also acceptable.

Read the ream label to determine the fiber composition of the paper. Paper is usually specified as xerographic bond (suitable for copiers or laser printers) or cotton bond. Paper of 25 percent, 50 percent, or 100 percent cotton bond is indicated on a watermark. If paper is less than 25 percent cotton bond, the watermark will not indicate a percentage.

A wood-pulp test kit can also be used to test fiber composition.

Fusing-compatibility field test

Inspect the rollers for ink buildup from preprinted logos or letterhead, and for toner buildup or spots. Inspect printed output for repetitive defects and smearing. If necessary, have users contact their forms vendor to ensure that the paper is compatible with HPLaserJet printers.

48 Installation ENWW

Tools and suppliers

Hewlett-Packard neither warrants nor recommends a particular manufacturer, supplier, or tool. Products are subject to change and HP has no control over such changes. However, the following table of tools and their suppliers is provided for convenience.

Tool Part Number Supplier Address

Paper moisture meter Single-sheet clamp probe

Temperature/humidity meter #3T331 Industrial Motor Service

Sheffield tester: precisionaire column Sheffield tester: smoothcheck gauge

Wood-pulp test kit pH test kit

Resistivity test tool: precision current/resistance meter Resistivity test tool: surface resistivity probe

2RRDMP 2R43E

TM 58-25-01 TM 58-25-02

4280-2 4360-2

278 96117-1

Mitchell Instrument 1570DDD Cheroke St. San Marcos, CA 92069-2433

2000 Albright Montgomery, IL 60538

TMI Testing Machines Inc. 400 Bayview A venue Amityville, NY 11701 (516) 842-5400

Shape Products 1127 57th Avenue Oakland, CA 94621 (800) 444-0015

Monroe Electronics 100 Housel Avenue PO Box 100 Lyndonville, NY 14098 (800) 821-6001

ENWW 2 Installation 49

50 Installation ENWW

3 Operation

Chapter contents

Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Control-panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Changing control-panel settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Printing control-panel menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Control-panel menus—user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Retrieve job menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Paper-handling menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Configure device menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Control-panel menus—service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Entering service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

ENWW Chapter 3 Operation 51

Control panel

This section provides information about the control panel and its features.

Control-panel layout

The control panel contains the following controls:

● a graphical display that can show up to two lines of messages

● four navigation buttons: (BACK arrow), (UP arrow), (DOWN arrow), and

● a (HELP) button

● a PAUSE/RESUME button

● a CANCEL JOB button

● three light-emitting diode (LED) indicator lights: Ready light, Data light, and Attention light

See “Troubleshooting with control-panel messages” on page 184 to identify and troubleshoot control-panel messages.

ELECT)

Graphical display

HELP

button

ACK

button

PAUSE/RESUME

button

Figure 14. Control-panel layout

EADY

light

ATA

TTENTION

light

button

ELECT

button DOWN

button

CANCEL JOB

button

52 Operation ENWW

Control-panel buttons

Button Function

(HELP) ● Provides information about the message on the graphical display.

ACK) ● Backs up one level in the menu tree, or backs up one numeric entry.

● Closes menus if it is held down for more than 1 second.

AUSE/RESUME ● Pause: Causes the printer to stop printing the current job and expel all active

pages from the paper path.

● Resume: Returns the printer to the ready or busy state from the menus or the

online Help.

P) ● Navigates to the previous item in the list, or increases the value of numerical

items.

ELECT) ● Opens menus and navigates through menu levels.

● Clears an error condition when the condition can be cleared.

● Saves the selected value for an item.

● Perf orms the action associated with the item that is highlighted on the graphical

display.

OWN) ● Navigates to the next item in the list, or decreases the value of n umerical items.

ANCEL JOB ● Cancels the current print job in process and expels all active pages from the

paper path. The time that it takes to cancel the job depends on the size of the print job. (Press the button only once.)

NOTE: The control-panel lights cycle while the print job is cleared from both the printer and the computer, and then return to the ready state (Ready light on).

Control-panel lights

Light State Indication

Ready On The printer is online and ready to accept data to print.

Off The printer cannot accept data because it is offline (paused)

or has experienced an error.

Blinking The printer is going offline. The printer stops processing the

current print job and expels all active pages from the paper path.

Data On The printer has data to print, but is waiting to receive all of

the data. Off The printer has no data to print. Blinking The printer is processing or printing th e da ta .

Attention On The printer has experienced a problem. Note the message

on the control-panel display , and then turn the printer off and

then on again. See “Troubleshooting with control-panel

messages” on page 184 for help in resolving problems. Off The printer is functionin g without error. Blinking Action is required. See the control-panel display.

ENWW Chapter 3 Operation 53

Changing control-panel settings

For a complete list of menu items and possible values , see “Control-panel menus—user” on page 55. Certain menu options appear only if the associated tray or accessory is installed. For example, the EIO menu appears only if you have an EIO card installed.

To change a control-panel setting

1 Press (SELECT) to open the menus. 2 Use (U

3 Some menus might have several submenus. Use (U

scroll to the submenu item that you want, and then press (S

4 Use (U

Some settings change rapidly if (U

P arrow) or (DOWN arrow) to scroll to the menu that you want, and then press

ELECT).

P arrow) or (DOWN arrow) to

ELECT).

P arrow) or (DOWN arrow) to scroll to the setting, and the n press (SELECT).

P arrow) or (DOWN arrow) is held down. An

asterisk (*) appears next to the selection on the display, indicating that it is now the default.

5 Press P

AUSE/RESUME to close the menu.

Note Printer-driver settings override control-panel settings. Software program settings override both

printer-driver settings and control-panel settings. If you cannot gain access to a menu or item, it is either not an option for the printer, or you have

not enabled the associated higher-level option. See your network administrator if a function has been locked (Access denied menus locked appears on the control-panel display).

Printing control-panel menus

To see the current settings for the men us and items that are a v ailab le at the control panel, print a control-panel menu map. You might want to store the menu map ne ar the printer for reference.

To print a control-panel menu map

1 Press (SELECT) to open the menus. 2 Use (U

ELECT).

3 Use (U

ELECT).

P arrow) or (DOWN arrow) to scroll to INFORMATION, and then press

P arrow) or (DOWN arrow) to scroll to PRINT MENU MAP, and then press

54 Operation ENWW

Control-panel menus—user

Retrieve job menu

Note The HP color LaserJet 2300 printer and the HP color LaserJet 2300L printer do not include this

menu. This menu provides a list of the stored jobs in the printer and access to all the job-storage

features. You can print or delete these jobs at the control panel. The section that follows lists the settings and possible values. In the Values column, the default

value for each setting is the one with an asterisk (*) next to it.

Note If you turn the printer power off, all stored jobs are deleted.

Table 9. Retrieve job menu

Item Values Explanation

[USERNAME] There is no value to

select.

[JOBNAME] There is no value to

select.

NO STORED JOBS There is no value to

select.

ALL PRIVATE JOBS There is no value to

select.

Print There is no value to

select.

ENTER PIN TO PRINT

COPIES *

Delete There is no value to

ENTER PIN TO DELETE

*0000 to 9999 A prompt that appears for jobs that were assigned a

1 to 32000 Is used to select the number of copies that you want to

select. *0000 to 9999 A prompt that appears for jobs that were assigned a PIN in

The name of the person who sent the job.

The name of the job stored in the printer. Select one of your jobs or all of your private jobs (those that were assigned a PIN in the printer driver). To select all of your private jobs, select ALL PRIVATE JOBS.

Indicates that there are no stored jobs to print or delete.

Appears if two or more private jobs are stored in the printer. Selecting this item prints all private jobs stored in the printer for that user, after the correct PIN is typed.

Prints the selected job.

personal identification number (PIN) in the printer driver. You must type the PIN to print the job.

print. 1-32000: Prints the requested number of copies of the job.

Deletes the selected job from the printer.

the printer driver. You must type the PIN to delete the job.

ENWW Chapter 3 Operation 55

Information menu

The Information menu contains printer information pages that give details about the printer and its configuration. Scroll to the information page that you want and press (S

Table 10. Information menu

Item Explanation

PRINT MENU MAP The menu map shows the layout and current settings of the control-panel-menu

items. For more information, see “To print a control-panel menu map” on page 54.

ELECT).

PRINT CONFIGURATION

PRINT SUPPLIES STATUS PAGE

PRINT USAGE PAGE The usage page shows the quantity of pages printed, as well as the paper source

PRINT FILE DIRECTORY

PRINT PCL FONT LIST

PRINT PS FONT LIST The PS f ont list shows all the PS fonts that are currently available to the printer.

The configuration page shows the current printer configuration. If an HP Jetdirect print server is installed, an HP Jetdirect configuration page will print out as well. For more information, see “Printing a configuration page” on pag e 199.

The supplies status page shows the levels of the supplies for the printer, calculation of the number of pages remaining, and cartridge-usa ge information. This page is available only if you are using genuine HP supplies. For more information, see “Supplies status page” on page 81.

used. It also shows the number of one-sided versus two-sided pages that have been printed. For more information, see “Printing a usage page” on page 201. NOTE: This menu item appears only if a mass-storage device that contains a recognized file system is installed in the printer, such as an optional flash DIMM. This item generates a page containing information that can be used for accounting purposes.

This menu item appears only if a mass storage device that contains a recognized file system is installed in the printer, such as an optional flash DIMM. The file directory shows information for all installed mass storage devices.

The PCL font list shows all the PCL fonts that are currently available to the printer.

56 Operation ENWW

Paper-handling menu

If paper-handling settings are correctly con figured at the co ntrol panel, y ou can print b y selecting the type and size of paper in the program or printer driver.

Some items on this menu (such as duplex and manual feed) are available in the program or printer driver (if the appropriate driver is installed). Program and printer-driver settings override control-panel settings.

The following table lists the settings and possible values. In the Values column, the default value for each setting is the one with an asterisk (*) next to it.

Table 11. Paper-handling menu

Item Values Explanation

TRAY 1 SIZE *ANY SIZE

LETTER LEGAL EXECUTIVE

8.5 x 1 A4 A5 B5 (ISO) B5 (JIS) EXECUTIVE (JIS) DPOSTCARD (JIS) 16K ENVELOPE #10 ENVELOPE MONARCH ENVELOPE C5 ENVELOPE DL ENVELOPE B5 CUSTOM ANY CUSTOM

TRAY 1 TYPE *ANY TYPE

PLAIN PREPRINTED LETTERHEAD TRANSPARENCY PREPUNCHED LABELS BOND RECYCLED COLOR CARDSTOCK>164 G/M2 ROUGH ENVELOPE

TRAY 2 SIZE *ANY SIZE

LETTER LEGAL EXECUTIVE

8.5 x 1 A4 A5 B5 (ISO) B5 (JIS) EXECUTIVE (JIS) 16K

Sets the value to correspond with the media size currently

loaded in tray 1.

● ANY SIZE: If both the type and size for tray 1 are set to

ANY, the printer will pull media from tray 1 first as long as media is loaded in the tray.

● A size other than ANY SIZE: The printer does not pull

from this tray unless the type or size of the print job matches the type or size loaded in this tray.

Sets the value to correspond with the type of paper or other

print media currently loaded in tray 1.

● ANY TYPE: If both the type and size for tray 1 are set to

ANY, the printer will pull media from tray 1 first as long as media is loaded in the tray.

● A type other than ANY TYPE: The printer does not pull

from this tray unless the type or size of the print job matches the type or size loaded in this tray.

Sets the value to correspond with the paper size currently

loaded in tray 2.

ENWW Chapter 3 Operation 57

Table 11. Paper-handling menu (continued)

Item Values Explanation

TRAY 2 TYPE ANY TYPE

PLAIN PREPRINTED *LETTERHEAD TRANSPARENCY PREPUNCHED LABELS BOND RECYCLED COLOR ROUGH

TRAY 3 SIZE *ANY SIZE

LETTER A4

TRAY 3 TYPE *ANY TYPE

PLAIN PREPRINTED LETTERHEAD TRANSPARENCY PREPUNCHED LABELS BOND RECYCLED COLOR ROUGH

TRAY [N] CUSTOM There is no value to

select.

Sets the value to correspond with the paper type currently loaded in tray 2.

Sets the value to correspond with the paper size currently loaded in tray 3. NOTE: This menu appears only if a tray3 is installed.

Sets the value to correspond with the paper type currently loaded in tray 3. NOTE: This menu appears only if a tray3 is installed.

This item appears only if a tray is set to a custom size.

UNIT OF MEASURE INCHES

*MILLIMETERS

X DIMENSION 3.0 to 8.50 INCHES

76 to 216 MM

Y DIMENSION 5.0 to 14.00 INCHES

127 to 356 MM

Selects the unit of measure to use when you set custom paper sizes for the specified tray.

Sets the measurement of the width of the paper (measurement from side to side in the tray).

Sets the measurement of the length of the paper (measurement from front to back in the tray). After the Y DIMENSION value is selected, a summary screen appears. This screen contains feedback that summarizes all the information that was selected on the previous three screens, such as TRAY 1 SIZE= 8.50 x 14 INCHES, Setting saved.

58 Operation ENWW

Configure device menu

This menu contains administrative functions.

Printing submenu

Some items on this menu are av ailab le in the progr am or printer driver (if the ap propriate driver is installed). Program and printer-driver settings override control-panel setting s. In general, it is better to change these settings in the printer driver, if applicable.

The following table lists the settings and possible values. In the Values column, the default value for each setting is the one with an asterisk (*) next to it.

Table 12. Configure device menu—printing submenu

Item Values Explanation

COPIES *1 to 999 Sets the default number of copies by selecting any number

from 1 to 999. Use (UP arrow) or (DOWN arrow) to select the number of copies. This setting applies only to print jobs that do not have the number of copies specified in the program or printer driver, such as a UNIX application. NOTE: It is best to set the number of copies in the program or printer driver. (Program and printer-driver settings override control-panel settings.)

or Linux

DEFAULT PAPER SIZE

DEFAULT CUSTOM PAPER SIZE

DUPLEX *OFF

*LETTER

LEGAL EXECUTIVE

8.5 x 13 A4 A5 B5 (ISO) B5 (JIS) EXECUTIVE (JIS) DPOSTCARD (JIS) 16K ENVELOPE #10 ENVELOPE MONARCH ENVELOPE C5 ENVELOPE DL ENVELOPE B5 CUSTOM

UNIT OF MEASURE X DIMENSION Y DIMENSION

Sets the default image size for paper and env elopes. (The item name changes from paper to envelope as you scroll through the available sizes.) This setting applies only to print jobs that do not have the paper size specified in the program or printer driver.

Sets a default custom paper size for tray 1. This menu appears only if the Custom-Standard switch in the selected tray is set to Custom.

Appears only for printers that include a built-in duplexer (HP LaserJet 2300d printer, HP LaserJet 2300dn pr inter, and HP LaserJet 2300dtn printer). Set the value to ON to print on both sides (duplex) or OFF to print on one side of a sheet of paper.

DUPLEX BINDING *LONG EDGE

SHORT EDGE

OVERRIDE A4/ LETTER

*NO

YES

Changes the binding edge for duplex printing. The menu item appears only if the printer includes a built-in duplexer (HP LaserJet 2300d printer, HP LaserJet 2300dn pr inter, and HP LaserJet 2300dtn printer) and DUPLEX=ON.

Directs the printer to print an A4-size job on letter-size paper if A4-size paper is not loaded in the printer (or vice versa).

ENWW Chapter 3 Operation 59

Table 12. Configure device menu—printing submenu

Item Values Explanation

MANUAL FEED *OFF

Feeds the paper manually from tray 1, rather than automatically from a tray. If MANUAL FEED=ON and tray 1 is empty, the printer goes offline when it receives a print job. MANUALLY FEED [PAPER SIZE] appears on the controlpanel display.

COURIER FONT *REGULAR

DARK

Selects the version of Courier font to use:

● REGULAR: The internal Courier font availab le on the

HP LaserJet 4 series printers.

● DARK: The internal Courier font available on the

HP LaserJet III series printers.

WIDE A4 *NO

YES

Changes the number of characters that can be printed on a single line of A4-size paper.

● NO: Up to 78 10-pitch characters can be printed on one

line.

● YES: Up to 80 10-pitch characters can be printed on

one line.

PRINT PS ERRORS *OFF

Determines whether a PS error page prints or not.

OFF: PS error page never prints. ON: PS error page prints when PS errors occur.

PCL There is no value to

Is used to configure the printer’s PCL settings.

select.

FORM LENGTH 5 to 128 (*60) Sets vertical spacing from 5 to 128 lines for default paper

size.

ORIENTATION *PORTRAIT

LANDSCAPE

Is used to select default page orientation. NOTE: It is best to set the page orientation in the program or printer driver. (Program and printer-driver settings override control-panel settings.)

FONT SOURCE *INTERNAL

SOFT

SLOT 1, 2, or 3

● INTERNAL: Internal fonts.

● SOFT: Permanent soft fonts. This option is available

only if it is installed.

● SLOT 1, 2, or 3: Fonts stored in one of the three DIMM

slots. This option is available only if it is installed.

FONT NUMBER *0 to 999 (*0) The printer assigns a number to each font and lists the

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

FONT PITCH 0.44 to 99.99

(*10.00)

FONT POINT SIZE

4.00 to 999.75 (*12.00)

SYMBOL SET *PC-8

Several

Selects the font pitch. This item might not appear, depending on the font selected.

Selects the font point size. This appears only if a font with a scalable point size is selected as the default font.

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

APPEND CR TO LF

*NO

YES

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

60 Operation ENWW

Print-quality submenu

Some items on this menu are av ailab le in the progr am or printer driver (if the ap propriate driver is installed). Program and printer-driver settings override control-panel setting s. In general, it is best to change these settings in the printer driver, if applicable.

The following table lists the settings and possible values. In the Values column, the default value for each setting is the one with an asterisk (*) next to it.

Table 13. Configure device menu—print-quality submenu

Item Values Explanation

SET REGISTRATION There is no value to

select.

PRINT TEST PAGE

SOURCE ALL TRAYS

ADJUST TRAY [N] X1 Shift X2 Shift Y Shift

There is no value to select.

TRAY 1 *TRAY 2 TRAY 3

-20 to 20 (*0) Sets the registration for the specified tray, where [N] is the

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

Prints a test page to show the current registration settings.

Selects the tray for which you want to print the test page.

number of the tray. A selection appears for each tray that is installed, and registration must be set for each tray.

● X1 SHIFT: Registra tion of the image on the paper from

side to side, as the paper lies in the tray. For duplexing, this side is the second side (back) of the paper.

● X2 SHIFT: Registra tion of the image on the paper from

side to side, as the paper lies in the tray, for the first side (front) of a duplexed page. This item appears only if the printer includes a built-in duplexer (HP LaserJet 2300d printer, HP LaserJet 2300dn printer, and HP LaserJet 2300dtn printer) and DUPLEX=ON (see “DUPLEX” on page 59). Set the X1 SHIFT first.

● Y SHIFT: Registration of the image on the paper from

top to bottom as the paper lies in the tray.

ENWW Chapter 3 Operation 61

Table 13. Configure device menu—print-quality submenu

Item Values Explanation

FUSER MODES

PLAIN PREPRINTED LETTERHEAD TRANSPARENCY PREPUNCHED LABELS BOND RECYCLED COLOR CARDSTOCK>164 G/ROUGH ENVELOPE RESTORE MODES

*NORMAL HIGH1 HIGH2 LOW REDUCE CURL MODE

Configures the fuser mode associated with each paper type.

Change the fuser mode only if you are experiencing problems printing on certain paper types. After you select a type of paper, you can select a fuser mode that is available for that type. The available selections might include some or all of the following modes:

● NORMAL: Used for most types of paper.

● HIGH 1: Used for rough paper.

● HIGH 2: Used for paper with a special or rough finish.

● LOW: Used for transparencies.

● REDUCE CURL MODE: Used to reduce paper curl. Turning

the option on might decrease print quality, because the setting reduces the amount of heat that the fuser applies during the printing process. With the lower temperature, toner might not completely bond to the media that you are using.

The default fuser mode is NORMAL for all print media types except transparencies (LOW), and rough paper (HIGH1).

CAUTION: Do not change the fuser mode for transparencies. Failure to use the LOW setting while printing transparencies can result in permanent damage to the printer and fuser. Always select Transparencies as the Type in the printer driver and set the tray type at the control panel to TRANSPARENCY.

OPTIMIZE There is no value to

select.

HIGH TRANSFER *OFF

LINE DETAIL *OFF

MORE SEPARATION

RESTORE OPTIMIZE

*OFF ON

There is no value to select.

When selected, RESTORE MODES resets the fuser mode for each media type back to its default setting.

Increases the intensity at which toner is transferred to the media. Set to ON for the following reasons:

● You are using highly resistive, lower-quality papers.

(HP recommends using only HP paper and print media.)

● A combination of low humidity and high temperature is

causing toner to scatter around the characters (halo effect).

Set to ON to combat toner explosion on labels and recycled media.

Decreases the possibility for jams in the print-cartridge area under conditions of high humidity and high temperature.

Returns to the defaults for the Optimize settings.

62 Operation ENWW

Table 13. Configure device menu—print-quality submenu

Item Values Explanation

RESOLUTION 300

600 *FASTRES 1200 PRORES 1200

RET OFF

LIGHT

*MEDIUM

DARK

ECONOMODE *OFF

Selects the resolution. All values print at the same speed.

● 300: Produces draft print quality and can be used for

compatibility with the HP LaserJet III family of printers.

● 600: Produces high-quality text printing and can be

used for compatibility with the HP LaserJet 4 family of printers.

● FASTRES 1200: Produces 1200-dpi print quality for fast,

high-quality printing of business text and graphics.

● PRORES 1200: Produces 1200-dpi printing for the best

quality in line art and graphic images.

NOTE: It is best to change the resolution in the program or printer driver. (Program and printer-driver settings override control-panel settings.)

Use the Resolution Enhancement technology (REt) setting to produce print that has smooth angles, curves, and edges. REt does not affect print quality if the print resolution is set to FastRes1200. All other print resolutions benefit from REt. NOTE: It is best to change the REt setting in the program or printer driver. (Program and printer-driver settings override control-panel settings.)

Turn EconoMode ON (to save toner) or OFF (for high quality). EconoMode creates draft-quality printing by reducing the amount of toner on the printed page. NOTE: It is best to turn EconoMode on or off in the program or printer driver. (Program and printer-driver settings override control-panel settings.) CAUTION: HP does not recommend full-time use of EconoMode. If EconoMode is used full-time, it is possible that the toner supply will outlast the mechanical parts in the print cartridge.

TONER DENSITY 1

CREATE CLEANING PAGE

PROCESS CLEANING PAGE

4 5

There is no value to select.

Lighten or darken the print on the page by setting the toner density. Select a setting ranging from 1 (light) to 5 (dark). The default setting of 3 usually produces the best results.

Press (S

ELECT) to print a cleaning page (to clean

toner from the fuser). Open the rear output bin. Follow the instructions on the cleaning page. For more information, see “Cleaning the fuser” on page 76.

This item is available only after a cleaning page has been created. Follow the instructions on the cleaning page. The cleaning process might take up to 2.5 minutes.

ENWW Chapter 3 Operation 63

System-setup submenu

Items on this menu aff ect p rinter beha vior. Configure the printer according to your printing needs . The following table lists the settings and possible values. In the Values column, the default v alu e

for each setting is the one with an asterisk (*) next to it.

Table 14. Configure device menu—system-setup submenu

Item Values Explanation

JOB STORAGE LIMIT 1 to 100 (*32) Specifies the number of quick copy jobs that can be stored

on the printer.

JOB HELD TIMEOUT *OFF

1 HOUR 4 HOURS 1 DAY 1 WEEK

SHOW ADDRESS *AUTO<

OFF

TRAY BEHAVIOR USE REQUESTED

TRAY< MANUALLY FEED PROMPT

USE REQUESTED TRAY

*EXCLUSIVELY FIRST

Sets the amount of time that held jobs are kept before being automatically deleted from the queue.

Defines whether or not the printer address is shown on the display with the READY message.

● AUTO: The IP address is shown with the READY

message if the device is connected to a network.

● OFF: The IP address does not appear with the READY

message.

Determines how the printer responds to jobs that request certain trays.

Determines whether the printer tries to pull media from a tray other than the one you selected in the printer driver.

● EXCLUSIVELY: Sets the printer to pull only from the tray

you selected and not pull from another tray, even if the tray you selected is empty.

● FIRST: Sets the printer to pull from the tray you

selected first, but allows the printer to pull from another tray automatically if the tray you selected is empty.

MANUALLY FEED PROMPT

ALWAYS *UNLESS LOADED

Determines when the printer shows a prompt regarding pulling from tray 1 if your print job does not match the type or size loaded in any other tray.

● ALWAYS: Select this option if you always want to be

prompted before the printer pulls from tray 1 .

● UNLESS LOADED: Prompts you only if tray 1 is empty.

DUPLEX BLANK PAGES

*AUTO YES

● AUTO: To increase performance, the printer does no t

print blank second sides of duplexed pages, except f or Any, Letterhead, Preprinted , or Prepunched paper types.

● YES: All blank pages are printed.

64 Operation ENWW

Table 14. Configure device menu—system-setup submenu

Item Values Explanation

POWERSAVE TIME 1 MINUTE

15 MINUTES

*30 MINUTES

60 MINUTES 90 MINUTES 2 HOURS 4 HOURS

DISPLAY BRIGHTNESS

1 2 3 4 *5 6 7 8 9 10

Sets how long the printer remains idle before it enters PowerSave mode.

PowerSave mode does the following:

● minimizes the amount of power the printer consumes

when it is idle

● reduces wear on electronic components in the printer

(turns off the display backlight, but the display is still readable)

The printer automatically comes out of PowerSave mode when you send a print job, press a control-panel button, open a tray, or open the top cover.

To turn PowerSave mode on and off, see “POWERSAVE” on page 70.

Customizes the readability of the display panel for your environment by lowering or raising brightness.

PERSONALITY *AUTO

PCL PS

CLEARABLE WARNINGS

*JOB

AUTO CONTINUE OFF

*ON

Selects the default printer language (personality). Possible values are determined by which valid languages are installed in the printer.

Normally, you should not change the printer language. If you change it to a specific printer language, the printer will not switch automatically from one language to another unless specific software commands are sent to the printer.

Sets the amount of time that a clearable warning is shown on the control-panel display.

● JOB: The clearable warning message appears until the

end of the job that generated the message.

● ON: The clearable warning message appears until you

press (S

ELECT).

Determines how the printer reacts to errors. If the printer is on a network, you probably want to turn to

ON.

● ON: If an error occurs that prevents printing, the

AUTO CONTINUE

message appears on the control-panel display, and the printer goes offline for 10 seconds before returning online.

● OFF: If an error occurs that prevents printing, the

message remains on the control-panel display, and the printer remains offline until you press

ELECT).

ENWW Chapter 3 Operation 65

Table 14. Configure device menu—system-setup submenu

Item Values Explanation

CARTRIDGE LOW *CONTINUE

STOP

CARTRIDGE OUT *CONTINUE

STOP

JAM RECOVERY *AUTO

OFF ON

Determines how the printer behaves if the print cartridge is low. The ORDER CARTRIDGE message first appears when about 10 percent of the toner remains in the print cartridge at 5 percent coverage (about 600 pages remaining). Print quality is not guaranteed if you print after receiving this message.

● CONTINUE: The printer continues to print, and the

message appears until you replace the print cartridge.

● STOP: The printer pauses printing until you replace the

print cartridge or press (SELECT) before each job to print it. The message appears until you replace the print cartridge.

Determines how the printer reacts if the print cartridge is empty.

● CONTINUE: The printer continues to print, and the

REPLACE CARTRIDGE message appears until you replace the print cartridge. HP does not guarantee print quality if you select CONTINUE after a REPLACE CARTRIDGE condition. Replace the print cartridge as soon as possible to ensure print quality.

● STOP: The printer stops printing until you replace the

print cartridge.

If the end of drum life is reached, the printer stops, regardless of the CARTRIDGE OUT setting.

Determines how the printer behaves if a jam occurs.

● AUTO: The printer automatically selects the best mode

for printer jam recovery (usually ON).

● OFF: The printer does not reprint pages following a

jam. Printing performance might be increased with this setting.

● ON: The printer automatically reprints pages after a

jam is cleared.

RAM DISK *AUTO

OFF

LANGUAGE *ENGLISH

Several others

Determines how the RAM disk is configured. (This item does not apply to printers with only 32 MB of RAM, such as the HP LaserJet 2300L and HP LaserJet 2300 printers.)

● AUTO: The printer determin es the optimal RAM-disk

size based on the amount of available memory.

● OFF: The RAM is disabled.

NOTE: If you change the setting from OFF to AUTO or from AUTO to OFF, the printer automatically reinitializes when it

becomes idle. Selects the language for the messages that appear on the

control-panel display.

66 Operation ENWW

I/O submenu

Items on the I/O (input/output) menu affect the communication between the printer and the computer. The submenu appears only when an EIO (enhanced input/output) device is installed in an EIO slot on the printer (such as an HP Jetdirect print server). The contents of the submenu depend on which type of EIO card is installed. If the printer co nt ains an HP Jetdirect print server EIO card, you can configure basic networking parameters by using the submenu. These and other parameters can also be configured through HP Web Jetadm in or other network configuration tools, such as Telnet or the embedded Web server.

The following table lists the settings and possible values. In the Values column, the default value for each setting is the one with an asterisk (*) next to it.

Table 15. Configure device menu—I/O submenu

Item Values Explanation

I/O TIMEOUT 5 to 300 (*15) Sel e c t th e I/ Otimeout period in seconds.

Use this setting to adjust timeout for best performance. If data from other ports appear in the middle of your print job, increase the timeout value.

PAGE BUFFERING *OFF

PARALLEL INPUT There is no value to

select.

HIGH SPEED NO

*YES

ADVANCED FUNCTIONS

EIO [X] JETDIRECT MENU

OFF

*ON

There is no value to select.

Adjust the buffering so that the engine does not spin up and down while it waits for information to be transferred.

● OFF: Indicates maximum performance and the fastest

first page out.

● ON: Indicates minimum wear, moderate performance,

and slower first page out.

NOTE: This item should be set to ON if you are using USB

1.1 or Ethernet 10 base T and the engine continues to spin up and down.

Configure the parallel features.

Select YES to enable the printer to accept the faster parallel communications that are used for connections with newer computers.

T urn the bidirectional parallel communication on or off. The default is set for a bidirectional parallel port (IEEE-1284). The function allows the printer to send status readback messages to the computer. (Turning the parallel advanced functions on might slow language switching.)

The [X] represents the slot in which the optional HP Jetdirect print server is installed, if any. Which of the following submenus appears depends on the type of print server that is installed:

● TCP/IP

● IPX/SPC

● APPLETALK

● DLC/LLC

TCP/IP There is no v alue to

Use this menu to configure the printer’s TCP/IP settings.

select.

ENABLE OFF

*ON

Select whether the TCP/IP protocol stack is enabled or disabled.

ENWW Chapter 3 Operation 67

Table 15. Configure device menu—I/O submenu

Item Values Explanation

HOST NAME *NPIXXXXXX An alphanumeric string (up to 32 characters long) that is

used to identify the device. This name is listed on the Jetdirect configuration page.

The default host name is NPIXXXXXX, where XXXXXX is composed of the last six digits of the LAN hardware (MAC) address.

CONFIG METHOD

*BOOTP DHCP MANUAL

DHCP DHCP RELEASE

*NO YES

DHCP RENEW *NO YES

MANUAL IP ADDRESS

n.n.n.n

SUBNET MASK m.m.m.m

Select whether the TCP/IP configura ti o n pa rameters are set automatically from a network server by using BootP (Bootstrap Protocol) or DHCP (Dynamic Host Configuration Protocol), or manually from the I/O submenu.

● If you select DHCP and a DHCP lease exists, use the

DHCP settings to set DHCP lease options.

● If you select MANUAL, use the MANUAL settings to

configure TCP/IP parameters.

This menu appears if CONFIG METHOD is set to DHCP and a DHCP lease for the print server exists.

● NO (default): The current DHCP lease is saved.

● YES: The current DHCP lease along with the leased IP

address are released.

This menu appears if CONFIG METHOD is set to DHCP and a DHCP lease for the print server exists.

● NO (default): The print server does not request to

renew the DHCP lease.

● YES: The print server requests to renew the current

DHCP lease.

The unique IP address of the printer, where n is a value from 0 to 255.

The subnet mask for the printer, where m is a value from 0 to 255. The mask is applied to IP addresses to uniquely identify subnetworks and nodes.

SYSLOG SERVER n.n.n.n

DEFAULT GATEWAY n.n.n.n

The IP address of the syslog server that is used to receive and log syslog messages.

The IP address of the gateway or route that is used for communications with other networks.

IDLE TIMEOUT XX The timeout value (in seconds) before an idle TCP print

data connection is automatically closed. The default value is 270 seconds. 0 disables the timeout.

IPX/SPX There is no value to

Use this menu to configure the printer’s IPX/SPX settings.

select.

ENABLE OFF

*ON

Select whether the IPX/SPX protocol stack (in Novell NetWare networks, for example) is enabled or disabled. If set to OFF, the FRAME TYPE and SOURCE ROUTING items do not appear.

FRAME TYPE *AUTO

EN_8023 EN_II EN_SNAP TR_8022 TR_SNAP

Select the frame type setting for your network.

● AUTO (default): Automatically sets and limits the frame

type to the first one detected.

● For an Ethernet network only , frame type selections

include EN_8023, EN_II, EN_8022, and EN_SNAP.

● For a Token Ring network only, frame type selections

include TR_8022 and TR_SNAP.

68 Operation ENWW

Table 15. Configure device menu—I/O submenu

Item Values Explanation

SOURCE ROUTING

APPLETALK There is no value to

ENABLE OFF

DLC/LLC There is no value to

ENABLE OFF

SECURE WEB *HTTPS REQUIREMT

*AUTO OFF ALL ROUTES SINGLE ROUTE

select.

*ON

select.

*ON

HTTPS OPTIONAL

For a Token Ring network only, specify the NetW are Token Ring Source Routing parameter. AUTO (default): The type of source routing that is required on the network is automatically sensed. OFF: All packets are sent without source routing, and only packets from the same ring are received. ALL ROUTES and SINGLE ROUTE: All packets are sent with source routing (broadcasts and when the route is unknown).

Use this menu to configure the printer’s AppleTalk settings.

For an Ethernet network only, select whether the AppleTalk protocol stack is enabled or disabled.

Use this menu to configure the printer’s DLC/LLC settings.

Select whether the DLC/LLC protocol stack is enabled or disabled.

For configuration management, specify whether the embedded Web server will accept communications using HTTPS (Secure HTTP) only, or both HTTP and HTTPS. HTTPS REQUIRED (default): For secure, encrypted communications, only HTTPS access is accepted. The printer server will appear as a secure site. HTTPS OPTIONAL: Access using either HTTP or HTTPS is permitted.

RESET SECURITY *NO

YES

LINK SPEED *AUTO

10T HALF 10T FULL 100TX HALF 100TX FULL

Specify whether 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: Security settings are reset to factory defaults.

For an Ethernet network only, select the network link speed and the communication mode of the HP Jetdirect 10/100Base-TX print server. The default setting is AUTO, where the printer automatically configures itself to match the network link speed (10 or 100 Mbps) and communication mode (half-duplex or full-duplex).

ENWW Chapter 3 Operation 69

Resets submenu

Items on the Resets submenu relate to returning settings to the defaults and changing settings such as PowerSave.

The following table lists the settings and possible values. In the Values column, the default v alu e for each setting is the one with an asterisk (*) next to it.

Table 16. Configure device menu—resets submenu

Item Values Explanation

RESTORE FACTORY SETTINGS

CLEAR MAINTENANCE

There is no value to select.

CHARGER CLEANED *NO

YES

POWERSAVE OFF

*ON

Performs a simple reset and restores most of the factory (default) settings. This item also clears the input buffer for the active I/O. Restoring factory settings does not affect network parameter settings on the optional HP Jetdirect print server. CAUTION: Restoring memory during a print job cancels the print job.

Clears the PERFORM PRINTER [X] MAINTENANCE warning message displayed when the printer has reached its prescribed number of pages printed between regularly scheduled maintenance operations. Appears only when the maintenance interval has been exceeded

● YES: Clears CLEAN POST CHARGER message.

● NO: Returns display to CLEAN POST CHARGER message.

Turn s PowerSave mode on or off. PowerSave mode does the following:

● minimizes the amount of power consumed by the

printer when it is idle

● reduces wear on electronic components in the printer

(turns off the display backlight, but display is still readable)

The printer automatically comes out of PowerSave mode when you send a print job, press a control-panel button, open a tray, or open the top cover. You can set how long the printer remains idle before it enters PowerSave mode. (See “POWERSAVE TIME” on page 65.)

70 Operation ENWW

Diagnostics menu

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

The following table lists the settings and possible values. In the Values column, the default value for each setting is the one with an asterisk (*) next to it.

Table 17. Diagnostics menu

Item Values Explanation

PRINT EVENT LOG There is no value to

select.

SHOW EVENT LOG There is no value to

select.

PAPER PATH TEST There is no value to

select.

PRINT TEST PAGE

SOURCE ALL TRAYS

DUPLEX *OFF

There is no value to select.

TRAY 1

*TRAY 2

TRAY 3

Press (SELECT) to generate a list of the 50 most recent entries in the event log. The printed event log shows error number, page count, error code, and description or personality.

Press (S event log at the control panel and shows the 50 most recent events . Use (U scroll through the event log contents.

Generates a test page that is useful for testing the paper-handling features of the printer. The following four menu items appear after you select PAPER PATH TEST and press (SELECT).

Press (S source (tray), destination (output bin), duplex, and number of copies settings that you set in the other items on the PAPER PATH TEST menu. Set the other items before selecting PRINT TEST PAGE.

Select the tray that uses the paper path you want to test. You can select any tray that is installed. Select ALL TRAYS to test all tray paper paths. (Paper must be loaded in the selected trays.)

Determine whether or not the paper goes through the duplexer during the paper-path test. The menu item appears only if the printer includes a built-in duplexer (HP LaserJet 2300d printer, HP LaserJet 2300dn pr inter, and HP LaserJet 2300dtn printer).

ELECT) to scroll through the contents of the

P arrow) or (DOWN arrow) to

ELECT) to start the paper path test using the

COPIES *1

10 50 100 500

Set how many sheets of paper are used from each tray during the paper-path test. If you are testing the optional stapler stacker (DESTINATION item), select 10 or higher.

ENWW Chapter 3 Operation 71

Control-panel menus—service

The Service menu is locked and requires a PIN for access. This menu is intended for use by authorized service personnel.

The PIN for the HP LaserJet 2300 series printer is: 11230002.

Entering service mode

1 Press (SELECT). 2 Use (U

P arrow) or (DOWN arrow) to scroll to SERVICE, and then press (SELECT).

The message SERVICE USE ONLY appears on the control panel.

3 To type the PIN, use (U

then press (S

ELECT) to set that number and move to the next number.

For ex ample , for the first number, use (U

P arrow) or (DOWN arrow) to scroll to the correct number, and

P arrow) to scroll to 1. Then press (SELECT).

The printer changes the 1 to * and waits for you to scroll to the next number in the PIN.

4 Finish typing the PIN and press (S

ELECT). The following menu items appear.

Table 18. Service menu

Item Values Explanation

CLEAR EVENT LOG There is no value to

select.

TOTAL PAGE COUNT There is no value to

select.

REFURBISH PAGE COUNT

There is no value to select.

Press (SELECT) to clear the event log.

Press (S

ELECT) to view the printer’s total page count.

Use (UP arrow) or (DOWN arrow) to adjust the count, and press (S

Press (S

ELECT). A refurbished total of 0 appears in

the control-panel display. Press (S

ELECT) to save the new total.

ELECT) again to

reset the count to 0, or use (UP arrow) or (DOWN arrow) to adjust the count, and press (SELECT) to save the new total.

SERIAL NUMBER There is no value to

select.

Press (S XXXXXXXXXX. Use (U

ELECT). The control-panel display shows

set each number, and press (S number and move to the next X. When you have entered all 10 digits, press (S number.

SERVICE ID There is no value to

select.

Press (S

ELECT). The control-panel display shows the

date the printer was installed (in a YYDDD format) or, if the date was unavailable when it was installed, *00000. Use (U

P arrow) or (DOWN arrow) to change each

0, and press (S the next 0. When you have entered all five digits, press

ELECT) to save the new service ID number.

COLD RESET PAPER *LETTER

Letter is the factory def ault setting. Use (U

OWN arrow) to select the proper default paper size

and press (S

ELECT) to save your selection.

Note See Chapter 7, “Troubleshooting,” for more service features.

P arrow) or (DOWN arrow) to

ELECT) to set the

ELECT) to save the new serial

ELECT) to set the number and move to

P arrow) or

72 Operation ENWW

4 Printer maintenance

Chapter contents

Periodic inspection of parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Cleaning the printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Cleaning the paper path and print-cartridge areas . . . . . . . . . . . . . . . . . . 75

Cleaning the fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Cleaning the outside of the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Managing the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

HP print cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Non-HP print cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Print-cartridge authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Print-cartridge storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Print-cartridge life expectancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Checking the supply level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Cartridge-low and cartridge-out conditions. . . . . . . . . . . . . . . . . . . . . . . . 80

Supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

ENWW Chapter 4 Printer maintenance 73

Periodic inspection of parts

Periodic replacement parts are the parts that should be inspected and, if required, replaced at regular intervals. Failure of these parts can seriously affect the printer’s performance. These parts should be inspected during a regular service visit near the end of their expected life, and any that are found to be worn or damaged should be replaced.

The following parts should be inspected and, if required, replaced after approximatel y 150,000 pages of use:

● fuser assembly

● transfer roller

● separation pads (tray 1, tray 2, and tray 3)

● pickup rollers (tray 1, tray 2, and tray 3)

● output feed rollers (upper and lower)

● transport belts and rollers

See "Removal and replacement" in chapter 6 for procedures to remove and replace these parts. See "Parts and diagrams" in chapter 8 for the part numbers. Variables such as media, environmen t, and usage can cause these parts to wear prematurely.

See "Media specifications" in chapter 2 for information about suitable media, environment, and usage conditions.

74 Printer maintenance ENWW

Cleaning the printer

Over time, particles of toner and paper accumulate inside the printer. This can cause print-quality problems during printing. Cleaning the printer eliminates or reduces these problems.

Cleaning the paper path and print-cartridge areas

Clean the paper path and print-cartridge areas every time that you change the print cartridge or whenever print-quality problems occur. As much as possible, keep the printer from dust and debris.

To clean the inside of the printer

1 Turn the printer off and unplug the power cord. 2 Open the top cover. 3 Remove the print cartridge.

CAUTION

To prevent damage to the print cartridge, do not expose it to light for more than a few minutes.

Be careful not to touch the transf er roller (th e blac k, rubber roller loca ted underneath the print cartridge). Skin oils on the roller can cause print-quality problems.

4 With a dry , lint -free cloth, wipe any re sidue from the paper path area

and the print cartridge cavity.

5 Reinstall the print cartridge and close the top cover.

Note

If the print cartridge is difficult to reinstall, make sure that the registr ation plate has been flipped back down into po sition and that you have pushed the print cartridge firmly in place.

6 Plug in the power cable and turn the printer on.

ENWW Chapter 4 Printer maintenance 75

Cleaning the fuser

Run the printer cleaning page to remov e toner and paper particles that can sometimes accumulate on the fuser . Accum ulation of toner and pa rticles can cause specks to appear on the front or back side of your print jobs. (See “Toner specks” on page 213.)

To ensure optimum print quality, HP recommends that you use the cleaning page e v ery time that you replace the print cartridge or on an automatic interval that you can set up.

The cleaning procedure takes about 2.5 minutes to complete. A message (either CREATING CLEANING PAGE or CLEANING) appears on the control-panel display while the cleaning is taking place.

To run the cleaning page

In order for the cleaning page to work correctly, print the page on copier-grade paper (not bond, heavy, or rough paper).

1 If your printer model includes a duplexer, open the rear output bin. 2 Press (S 3 Use (U

4 Use (U

5 Use (U

ELECT button) to open the menus.

P button) or (DOWN button) to scroll to CONFIGURE DEVICE, and then press

ELECT button).

P button) or (DOWN button) to scroll to PRINT QUALITY, and then press

ELECT button).

P button) or (DOWN button) to scroll to CREATE CLEANING PAGE, and then press

ELECT button).

6 Follow the instructions on the cleaning page to complete the cleaning process. 7 If your printer model includes a duplexer, close the rear output bin.

Cleaning the outside of the printer

Clean the outside of the printer with a cloth that has been damp ened with water.

CAUTION Do not use ammonia-based cleaners on or around the printer.

76 Printer maintenance ENWW

Managing the print cartridge

This section provides information about HP print cartridges, how to store them, how to identify genuine ones, and their life expectancy. It also provides information about non-HP print cartridges.

HP print cartridges

When you use a genuine new HP print cartridge, part number Q2610A (6,000-page cartridge), you can obtain several types of information, such as the following:

● amount of toner remaining

● estimated number of pages remaining

● number of pages printed

● other supplies information

Non-HP print cartridges

Hewlett-Packard Company cannot recommend the use of non-HP print cartridges, either new or remanufactured. Because they are not HP products, HP cannot influence their design or control their quality. Service or repair that is required as a result of using a non-HP print cartridge is not covered under the printer warranty.

If you use a non-HP print cartridge, the printer is unable to report the lev els of the supplies f or th e printer, calculation of the number of pages remaining, and cartridge-usage information. The printer does report a non-HP print cartridge with a message on the control-panel displa y (Non-HP cartridge detected).

Print-cartridge authentication

The printer informs you that a print cartridge is not a genuine HP print cartridge when you insert it into the printer.

If the control-panel message states that this is not a genuine HP print cartridge and you believe you purchased an HP print cartridge, call the HP fraud hotline. Hewlett-Packard will help determine if the product is genuine and take steps to resolve the problem.

In the United States, call toll-free: (1) (877) 219-3183. Outside the United States, y ou can call collect. Dial the operat or and ask to place a collect call to

this telephone number: (1) (770) 263-4745. If you do not speak English, a representative at the HP fraud hotline who speaks your language will assist you. Or, if someone who speaks your language is not available , a language-line interpreter will connect approximately one minute after the beginning of the call. The language-line interpreter is a service that translates between you and the representative for the HP fraud hotline.

ENWW Chapter 4 Printer maintenance 77

Print-cartridge storage

Do not remove the print cartridge from its package until you are ready to use it. Print cartridges should be stored in an environment ranging from minus-20 degrees Celsius to 40 degrees Celsius (minus-4 degrees Fahrenheit to 104 degrees Fahrenheit). Store the supply in a horizontal position in a dark, dry location away from heat and magnetic sources.

CAUTION To prevent damage to the print cartridge, do not expose it to light for more than a few minutes.

Print-cartridge life expectancy

The life of the print cartridge depends on the amount of toner that print jobs require and the length of life for the components inside the cartridge. When printing text at 5 percent coverage (typical for a business letter), an HP print cartridge lasts an average of 6,000 pages. This assumes that toner density is set to 3 and EconoMode is off . (These are the default settings. For details about these settings, see the description of ECONO MO DE an d TONER DENSITY in “Print-quality submenu” on page 61.)

At any time, you can verify life expectancy by checking the supply level, as described in “Checking the supply level” on page 79.

Note Hewlett-Packard recommends that a print cartr i d ge be co mp le tely use d wi th in six mo nt hs of

opening the cartridge’s packaging.

78 Printer maintenance ENWW

Checking the supply level

You can check the supply (toner) le v el using t he printer control pane l, the embedded W eb server, the printer software, or HP Web Jetadmin.

To check the supply level by using the control panel

1 Press (SELECT button) to open the menus. 2 Use (U

3 Use (U

then press (S

P button) or (DOWN button) to scroll to INFORMATION, and then press

ELECT button).

P button) or (DOWN button) to scroll to PRINT SUPPLIES STATUS PAGE, and

ELECT button). See “Supplies status page” on page 81 for information

about the supplies status page.

To check the supply level by using the embedded Web server

1 In your Web browser, enter the IP address for the printer home page. This takes you to the

printer status page. See the user guide for more information about the embedded Web server.

2 On the left side of the screen, click Supplies Status. This takes you to the supplies status

page, which provides supply level information.

To check the supply level by using the printer software

Three things are required to use this feature:

● The Printer Status and Alerts software on the CD-ROM that came with the printer must be

installed on your computer. Printer Status and Alerts can be installed through the custom install option on the CD-ROM. See the user guide for more information about Printer Status and Alerts.

● The printer must be directly connected to your computer with a parallel cable.

● You must have access to the Internet.

1 At the lower-right corner of y our screen, double-click t he Printer icon. This opens the status

window.

2 On the left side of the status window, click the Printer icon from which you want to obtain

status.

3 At the top of the status window, click the Supplies link. You can also scroll down to Supplies

Status.

Note If you want to order supplies, click Order Supplies. This opens a browser that produces a URL

from which you can purchase supplies. Select the supplies that you want to order , and finish the ordering process.

To check the supply levels using HP Web Jetadmin

In HP Web Jetadmin, select the printer device. The device status page shows supply-level information.

ENWW Chapter 4 Printer maintenance 79

Cartridge-low and cartridge-out conditions

The printer alerts you if the print cartridge is low on toner or out of toner.

When the cartridge is low on toner

When the cartridge is low on toner, the printer control panel shows the ORDER CARTRIDGE message. The ORDER CARTRIDGE message first appears when about 10 percent of the toner remains in the print cartridge (at 5 percent coverage, about 600 pages remaining).

The default is for the printer to continue printing until the toner runs out, but you might prefer to have the p rinter stop instead of continuing when the ORDER CARTRIDGE message first appears (for example, if you want print quality to remain consistently high during print jobs, or if you do not want the cartridge to run out during a long print job). To configure the printer to stop, set CARTRIDGE LOW=STOP (in the System Setup submenu of the Configure Device menu). (See “CARTRIDGE LOW” on page 66.) Then, when ORDER CARTRIDGE appears, the printer will stop printing. You can resume printing by pressing (S

When the cartridge is out of toner or drum life

The REPLACE CARTRIDGE message appears in one of these situations:

● When the print cartridge is out of toner. If CARTRIDGE OUT is set to CONTINUE (in the

SYSTEM SETUP submenu of the CONFIGURE DEVICE menu), the printer continues printing

without interaction until the cartridge reaches the end of drum life. HP does not guarantee print quality after the REPLACE CARTRIDGE message first appears . Replace the print cartridge as soon as possible. (See “Ordering parts and supplies and getting support” on page 242.) The REPLACE CARTRIDGE message remains until you replace the print cartridge. If CARTRIDGE OUT is set to STOP, the printer stops printing until you replace the print cartridge or resume printing by pressing (S

● When the print-cartridge drum life is over . You must repla ce the print cartridge to continue

printing. No override is possible, even if toner remains in the cartridge. (See “Ordering parts and supplies and getting support” on page 242.) This situation occurs to protect the printer.

ELECT) for each print job.

80 Printer maintenance ENWW

Supplies status page

Use the supplies status page to obtain info rmation about the print cartridge that is installed in the printer, the amount of lif e re maining in the print cartridge, and the numb er of pages an d jobs that have been processed.

Note You can also obtain supplies status information in the embedded Web server. For details, see

page 79.

To print a supplies status page at the control panel

1 Press (SELECT) to open the menus. 2 Use (U 3 Use (U

ELECT).

2 3

P) or (DOWN) to scroll to INFORMATION, and then press (SELECT). P) or (DOWN) to scroll to PRINT SUPPLIES STATUS PAGE, and then press

Figure 15. Supplies status page

1 Supplies website Lists the local website for ordering supplies through the Internet. 2 Cartridge

information

3 Printing statistics Lists statistics about total number of pages and jobs that have been

4 Manufacture

information

5 Recycling website Lists the website for information about returning used HP print

ENWW Chapter 4 Printer maintenance 81

Provides information about the estimated number of pages remaining for the amount of toner left in the cartridge and the status of the toner supply, as well as the print-cartridge serial number.

processed using this print cartridge and the page count by paper size. Shows the installation date and last use date for this print cartridge.

cartridges.

82 Printer maintenance ENWW

5 Theory of operation

Chapter contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Basic sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Power-on sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Engine control system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Laser/scanner system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Image-formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Image-formation process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Electrostatic latent-image-formation block . . . . . . . . . . . . . . . . . . . . . . . . 90

Developing block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Transfer block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Fusing block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Drum-cleaning block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Pickup/feed system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Single-sided printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Duplex printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Automatic duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Formatter hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Formatter subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Sheet feeders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Media detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Pickup sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Delivery sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Reversing sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Automatic duplexer sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Paper-feed sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

ENWW Chapter 5 Theory of operation 83

Introduction

This chapter presents an overview of the relationships between major components of the HP LaserJet 2300 printer. The following systems are discussed:

● engine control

● laser/scanner

● image formation

● pickup and feed

● formatter

Basic sequence of operation

Operation sequences are controlled by the CPU in the eng ine controller PCA. Table 19 describes engine operations for each period of a print operation.

Table 19. Basic sequence of operation

Period Timing Purpose Remarks

WAIT (wait period) From power-on until

completion of the mainmotor initial drive.

STBY (standby period) From the end of the WAIT

period until the print instruction command is received from the formatter, or from the end of LSTR until the print instruction command is input from the formatter, or until the power is switched off.

INTR (initial rotation period)

PRINT (print period) From the end of INTR

From receipt of the print instruction command from the formatter until the media reaches the top-of-page sensor.

until 0.8 seconds after the top-of-page sensor detects the trailing edge of the media.

Clears the drum surface potential and cleans the transfer charging roller.

Maintains the printer in a ready state.

Stabilizes the sensitivity of the photosensitive drum in preparation for printing.

Forms an image on the photosensitive drum according to instructions from the formatter and transfers the image to media.

Detects whether or not the cartridge is insta lled. Also, during WAIT, the LEDs cycle and the HP logo appears on the control-panel display.

LSTR (last rotation period)

From completion of printing until the main motor stops rotating.

Delivers the final page out of the printer and cleans the transfer charging roller.

If a print instruction command is received from the formatter, the printer bypasses WAIT and STANDBY and immediately enters INTR.

84 Theory of operation ENWW

Power-on sequence

The the following steps describe the sequence from power-on un til the printer enters the standb y (STBY) mode.

1 Power-on. 2 CPU initialization. 3 Formatter communication start. 4 Main motor, reverse motor, and fan drive—Reads the paper-detecting status of each sensor

in the printer immediately before driving the main motor, and assesses a jam if residual media is detected.

5 Residual paper check—After starting the main motor, detection of residual media in the

printer resumes. If residual media is detected, the printer assesse s a jam or automatically delivers the residual media.

6 High-voltage control—Detects the cartridge presence and cleans the transfer charging roller

after the primary charging ac bias is turned on.

7 Fa ilure or abnormality check—Detects door-open, fan-motor, and fuser-unit failures during

the other sequence periods.

ENWW Chapter 5 Theory of operation 85

Engine control system

The engine control system coordinates all printer functions. It drives the laser/scanner system, the image-formation system, and the pickup and feed system.

Figure 16. Engine control system

The engine controller PCA controls the operation sequence of the printer. The power supply PCA contains the following components:

● fuser control circuit—regulates the heat of the fuser

● high-voltage power supply—applies biases to the primary charging roller, developing

cylinder, transfer charging roller, and fuser film

● low-voltage power supply—converts ac power to dc power for main motor, scanner motor,

fan, and solenoid function

86 Theory of operation ENWW

Laser/scanner system

At the laser/scanner assembly, laser beams focus onto the photosensitive drum and discharge the drum's negative potential. This creates a latent electrostatic image, which later is developed into a visible image.

The laser diode beams shine onto a scanning mirror. As the mirror rotates, the beams reflect off the mirror and sweep the page from left to right.

A set of lenses and mirrors focuses the horizontal sweeping beams through t he beam access slots in the rear of the toner cartridge and onto the photosensitive drum. Because the beams sweep the entire leng th of the drum while th e drum rotates , t he entir e circumference of the drum can be covered.

At the beginning of each sweep (before the beams reach the drum), the beam detect mirror reflects the beams. The momentary pulse of light goes t o the engine controller PCA, which converts the light to an electrical signal that is used to synchronize other activities in the printer and to diagnose problems with the laser/scanner assembly.

Portions of the drum that are not exposed to the laser still contain the uniform negative potential that was placed there by the primary charging roller, but the portions that have been exposed to light have been discharged to ground to form the latent electrostatic image.

Figure 17. Laser/scanner system

ENWW Chapter 5 Theory of operation 87

Image-formation system

The image-formation system, which forms a toner image on media, consists of several interdependent systems.

Figure 18. Image-formation system

88 Theory of operation ENWW

Image-formation process

Laser printing requires the interaction of several different technologies, including electronics, optics, and electrophotographics, to provide a printed page. Each process functions independently and must be coordinated with the other printer processes. Image formation consists of the following five processes:

● electrostatic latent-image formation

● developing

● transfer

● fusing

● drum cleaning

The five processes contain eight steps, which are shown in figure 19 and described in the following sections.

Figure 19. Image-formation system

ENWW Chapter 5 Theory of operation 89

Electrostatic latent-image-formation block

Step 1: primary charging

A dc bias is applied to the primary charging roller, which tr ansfers a uniform negative potential to the photosensitive drum.

Figure 20. Step 1: primary charging

Step 2: laser-beam exposure

The laser beam scans the photosensitive drum to neutralize negative charges on parts of the drum. An electrostatic latent image is formed on the drum where negative charges were neutralized.

Figure 21. Step 2: laser-beam exposure

90 Theory of operation ENWW

Developing block

The developing cylinder comes in contact with the photosensitive d rum to deposit ton er ont o th e electrostatic latent image.

Note The charges on the expose d area of the drum are shown as positiv e in figure 22. The charges are

actually negative, but they are more positive than the charges on the developing cylinder.

Figure 22. Developing block

Step 3: developing

Toner acquires a negative charge through friction from the developing cylinder and the blade. When the negatively charged toner comes in contact with the drum, the toner adheres to the electrostatic latent image. The image on the dr u m be co m es visible because of th e to ne r.

Figure 23. Step 3: developing

ENWW Chapter 5 Theory of operation 91

Transfer block

Step 4: transfer

The transfer charging roller, to which a dc positive bias is applied, imparts a positive charge on the print media. When the print media comes in contact with the photosensitive drum, the toner is transferred to the print media.

Figure 24. Step 4: transfer

Step 5: separation

The elasticity of the print media causes its separation from the photo sensitive drum. A static charge eliminator aids separation by weakening any electrostatic adhesion.

Figure 25. Step 5: separation

92 Theory of operation ENWW

Fusing block

Step 6: fusing

The dc negative bias applied to the fusing film strengthens the ho ldin g force of the toner on the print media and prev ents the toner from scattering.

Figure 26. Step 6: fus in g

ENWW Chapter 5 Theory of operation 93

Drum-cleaning block

Step 7: drum cleaning

The cleaning blade scrapes the residual toner off of the photosensitive drum and deposits it into the waste toner case.

Figure 27. Step 7: drum cleaning

Step 8: transfer charging roller cleaning

Negatively-charged residual toner on the transfer charging roller is collected by the photosensitive drum when a dc negative bias is applied to the transfer charging roller.

Figure 28. Step 8: transfer charging roller cleaning

94 Theory of operation ENWW

Pickup/feed system

When the formatter sends a print command to the engine controller PCB, the main motor and scanner motor start rotating and the fuser heater temperature control starts.

The paper-feed system automatically picks print media from tray 1, tray 2, or tray 3 (if installed) and delivers it to the registration roller. Before the media reaches the registration roller, the separation pad separates any excess sheets of media, and the reg istration shutter corrects the media skew.

Single-sided printing

After the top-of-page sensor detects the leading edge of the page, the engine controller PCB sends a signal to the formatter. This signal functions as a synchronization between the engine controller PCB and the formatter. This synchronization allows the leading edge of the image on the photosensitive drum to match the leading edge of the page. After t he transf erring stage of the image-formation process, the paper is fed to the fuser assembly by the feed belts.

The delivery sensor detects the exiting paper, which is usually fed to the top or rear output bin unless duplex is enabled.

Duplex printing

To print duplex, the printer prints one side of the paper, as described in “Single-sided printing,” transports it to the face-down tray once, and then reverses the paper by feeding it back to the duplex feed unit.

The face-up sensor detects paper delivered face-down, with one side printed. The delivery sensor detects the trailing edge of the paper, then signals the engine controller. The

engine controller rotates the reverse motor counterclockwise to send the paper to the duplexer feed unit.

The reversed paper sensor receives the paper, then signals the engine controller to turn the duplexer solenoid on. The paper is transported by the oblique roller to the registration roller. If next paper is picked up, the duplex-fe d paper stops at the specified position. The top page sensor senses the next paper, the specified period of time passes, then the duplex-fed paper is retransported.

The retransporte d pa pe r is printed with the other side and delivered to the face-down tray.

ENWW Chapter 5 Theory of operation 95

Figure 29. Pickup/feed system

PS501: Reversed paper sensor PS502: F ace-up sensor

PS503: Automatic duplex pickup sensor PS1305: Tray 2 media sensor

PS2301: Delivery sensor PS2305: Top-of-page sensor

PS3908: Tray 1 media sensor SL1: Tray 2 pickup solenoid

SL2: Tray 1 pickup solenoid SL3: Automatic duplex solenoid

96 Theory of operation ENWW

Delivery

Figure 30. Delivery

ENWW Chapter 5 Theory of operation 97

Automatic duplexer

Figure 31. Automatic duplexer path

Figure 32. Automatic duplexer feed and delivery

98 Theory of operation ENWW

HP LaserJet 2300 Series Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Figures

Tables

1 Product description

Printer configurations

Printer features

Identification

Specifications

Physical specifications

Electrical specifications

Power consumption

Acoustic emissions

Operating environment

Product overview

Print-cartridge and toner safety

Laser safety

Regulatory information

FCC regulations

Declaration of conformity

Environmental product stewardship program

Protecting the environment

Material safety data sheet

HP Printing Supplies Environmental Program information

Service approach

Bench-repair warranty

HP Express Exchange

Information about ordering

World Wide Web

HP service parts-information compact disc

HP support-assistant compact disc

Reseller sales and service support

2 Installation

Site requirements

Operating environment

Printer space requirements

Interface ports

Media specifications

General media specifications

Media input options

Paper sizes for automatic duplexing

Guidelines for selecting paper

Envelope specifications

Label specifications

Transparency specifications

Storing print media

Shipping print media

Paper fillers

Testing media specifications

Tools and suppliers

3 Operation

Control panel

Control-panel layout

Changing control-panel settings

Printing control-panel menus

Control-panel menus—user

Retrieve job menu

Information menu

Paper-handling menu

Configure device menu

Diagnostics menu

Control-panel menus—service

Entering service mode

4 Printer maintenance

Periodic inspection of parts

Cleaning the printer

Cleaning the fuser

Cleaning the outside of the printer

Managing the print cartridge

Checking the supply level

Cartridge-low and cartridge-out conditions

Supplies status page

5 Theory of operation

Introduction

Basic sequence of operation

Power-on sequence

Engine control system