HP LaserJet 4000, LaserJet 4000 N, LaserJet 4000 T, LaserJet 4000 TNs Service Manual

HP LaserJet 4000, 4000 N, 4000 T, and 4000 TN Printers

Service Manual _____________

Publication number C4118-91026

First Edition

Warranty

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

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

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

Trademark Credits

PostScript

™

is a trademark of Adobe Systems Incorporated which may be registered in certain jurisdictions.

™

CompuServe

is a U.S.

trademark of CompuServe, Inc.

Windows

is a U.S. registered trademarks of Microsoft Corporation.

™

TrueType

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

NERGY STAR

is a U.S. registered service mark of the U.S. EPA.

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

Contents

1 Printer Description

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

Printer Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Model and Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

Site Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Space Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Paper Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Supported Types of Paper . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12

Guidelines for Using Paper. . . . . . . . . . . . . . . . . . . . . . . . . . .1-13

Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15

Transparencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15

Envelopes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16

Card Stock and Heavy Paper . . . . . . . . . . . . . . . . . . . . . . . . .1-18

Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Laser Safety Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

Canadian DOC Regulations . . . . . . . . . . . . . . . . . . . . . . . . . .1-19

FCC Regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-20

Laser Statement for Finland . . . . . . . . . . . . . . . . . . . . . . . . . .1-21

Toner Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22

Environmental Product Stewardship. . . . . . . . . . . . . . . . . . . .1-23

2 Service Approach

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Service Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

Parts and Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Helpful Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Phone Numbers for Ordering . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Exchange Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Toner Cartridge Information . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8

Warranty Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9

Contents-1

3 Printer Operation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Control Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Control Panel Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Control Panel Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Settings and Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Control Panel Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Paper Handling Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Print Quality Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

Printing Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13

Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17

I/O Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23

EIO Menu (Networked Printers) . . . . . . . . . . . . . . . . . . . . . . .3-26

Resets Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-28

Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-29

Service Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30

Setting the Page Count, Maintenance Count,

and Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30

Cold Reset Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33

Clear Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33

Testing the Printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34

Resetting the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-35

System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-36

MS-DOS System Configuration . . . . . . . . . . . . . . . . . . . . . . .3-36

Parallel DOS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-36

Serial MS-DOS Commands . . . . . . . . . . . . . . . . . . . . . . . . . .3-37

Printer I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

Parallel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

Serial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

Contents-2

4 Printer Maintenance

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

Cleaning the Printer and Accessories. . . . . . . . . . . . . . . . . . . . . . .4-2

Cleaning Spilled Toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4

Preventative Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Reset Maintenance Count . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Expected Life of Components. . . . . . . . . . . . . . . . . . . . . . . . . .4-5

5 Functional Information

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Printer Subsystems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Power Supply System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

AC/DC Power Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Overcurrent Overvoltage Protection . . . . . . . . . . . . . . . . . . . . .5-5

High Voltage Power Distribution. . . . . . . . . . . . . . . . . . . . . . . .5-6

Toner Cartridge Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Engine Controller Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Engine Controller Board Inputs and Outputs . . . . . . . . . . . . . .5-9

Laser and Scanner Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

Paper Motion Monitoring and Control. . . . . . . . . . . . . . . . . . .5-13

Solenoids, Sensors, Clutches, and Switches . . . . . . . . . . . . .5-13

Engine Test Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13

Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14

Formatter System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16

PowerSave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16

Resolution Enhancement technology (REt) . . . . . . . . . . . . . .5-17

EconoMode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-17

Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18

CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18

Printer Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-19

Random Access Memory (RAM) . . . . . . . . . . . . . . . . . . . . . .5-19

DIMM Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-20

Memory Enhancement technology (MEt) . . . . . . . . . . . . . . . .5-20

Page Protect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-20

PJL Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21

PML. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21

Image Formation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-22

Toner Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-24

Photosensitive Drum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-25

Writing the Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28

Developing the Image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-29

Transferring the Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30

Image Fusing/Variable Fusing Temperature. . . . . . . . . . . . . .5-31

Paper Feed System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-33

Clutches and Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-34

Printing from Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-35

Printing from Tray 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-37

Printing from the Optional 500-sheet Tray . . . . . . . . . . . . . . .5-40

Envelope Feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-44

Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-46

Paper Jam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-48

Basic Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-49

Contents-3

6 Removing and Replacing Parts

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Removal and Replacement Strategy. . . . . . . . . . . . . . . . . . . . . . . .6-2

Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3

Removing Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6

Rear Right Side Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6

Top Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Left Side Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12

Front Right Side Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13

Rear Cover/Rear Output Bin. . . . . . . . . . . . . . . . . . . . . . . . . .6-14

Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-15

Removing Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-18

Fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-18

Formatter Cage Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

Output Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-21

Laser Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-23

Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-24

Main Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-25

Transfer Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-26

Tray 1 Pickup Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-27

Tray 1 Pickup Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-29

Right Side Toner Cartridge Guide. . . . . . . . . . . . . . . . . . . . . .6-33

Registration Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-34

Paper Feed Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-36

Formatter Pan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-39

Gear Train. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-40

Delivery Drive Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-41

Separating the Engine Module from the Paper Feed Module. . . .6-42

Engine Controller Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-44

Paper Feed Rollers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-48

Separation Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-49

Paper Feed Module Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . .6-50

Paper Feed Module Gear Train Assembly . . . . . . . . . . . . . . .6-51

Paper Feed Module Side Rails. . . . . . . . . . . . . . . . . . . . . . . .6-52

Lower Paper Feed Module Plate

(HP LaserJet 4000 T/4000 TN). . . . . . . . . . . . . . . . . . . . . . . .6-53

PCA Cover (HP LaserJet 4000 T/4000 TN) . . . . . . . . . . . . . .6-54

PCA Cover (HP LaserJet 4000/4000 N). . . . . . . . . . . . . . . . .6-55

PCA Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-56

Contents-4

7 Troubleshooting

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Troubleshooting Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Troubleshooting Flowchart (Continued) . . . . . . . . . . . . . . . . . .7-5

Troubleshooting the Printing System . . . . . . . . . . . . . . . . . . . . . . .7-6

Preliminary Operating Checks . . . . . . . . . . . . . . . . . . . . . . . . .7-6

Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7

Engine Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-11

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-12

Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-13

Printer Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-17

General Paper Path Troubleshooting . . . . . . . . . . . . . . . . . . .7-42

Information Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-45

Image Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-49

Image System Troubleshooting . . . . . . . . . . . . . . . . . . . . . . .7-67

Interface Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . .7-69

AUTOEXEC.BAT Standard Configurations . . . . . . . . . . . . . .7-72

Reference Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-75

Locations of Components. . . . . . . . . . . . . . . . . . . . . . . . . . . .7-75

Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-81

Engine Controller Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-84

Paper Size Detection Switches. . . . . . . . . . . . . . . . . . . . . . . .7-86

Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-91

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-92

PCAs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-95

Sensors and Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-97

Solenoids and Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-100

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-102

Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-104

8 Parts and Diagrams

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

How To Use the Parts Lists and Diagrams . . . . . . . . . . . . . . . . . . .8-2

Accessories and Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

Common Screws and Replacement Cables. . . . . . . . . . . . . . .8-6

Illustrations and Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-8

Alphabetical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-57

Numerical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-66

Contents-5

Contents-6

Printer Description

Overview

This chapter discusses the following:

Printer Features



Identification



Site Requirements



Paper Specifications



Safety Information



Overview

1-1

Printer Features

Table 1-1. Printer Features

Speed 17 pages per minute (ppm)

100 MHz RISC microprocessor First Page Out = 15 sec.

Resolution

Typefaces

Memory Options HP LaserJet 4000/4000 T: 4 MB RAM standard

Expansion Slots 3 100-pin DIMM slots

Interface Bidirectional IEEE 1284 compliant parallel interface

Optional Networking 10Base-T and 10Base-2

300 dpi with PCL5e/HP’s PostScript 600 dpi with PCL5e/PS HP FastRes 1200 (PCL6 only) HP ProRes 1200 (PCL6, PS)

110 Scalable TrueType and PCL accessible)

HP LaserJet 4000 N/4000 TN: 8 MB RAM standard Optional Memory:

2, 4, 8, 16 MB EDO DIMMs 32 MB SDRAM DIMM

2 enhanced I/O (EIO) slots

RS-232 9-pin serial Paper Handling Connector (PHC)

10/100Base-TX Token Ring LocalTalk

(80 built-in, 30 via FontSmart, all PS

Level 2 emulation (PS)

Mass Storage Options 2 and 4 MB Flash DIMMs

1-2 Printer Description

Table 1-1. Printer Features (continued)

Paper Trays 100-sheet Tray 1

Size: 3 by 5 to legal (76 by 127 mm to 216 by 356 mm) 500-sheet Tray 2 (HP LaserJet 4000/ 4000 N) Size: letter, legal, A4 250-sheet Trays 2 and 3 (HP LaserJet 4000 T/ 4000 TN) Size: letter, A4, executive, legal, B5 (ISO), B5 (JIS), A5 Optional Universal 500-sheet Tray supports standard and custom sizes from 5.8 by 8.2 in (149 by 210 mm) to 8.5 by 14 in (216 by 356 mm).

Paper Path Straight through from Tray 1 to rear output bin

Or to top output bin

Output Capacity 250-sheet top output bin

50-sheet rear output bin

Paper Handling Options Duplexer, Envelope Feeder, optional 500-sheet universal tray

assembly

Table 1-2. Comparison of HP LaserJet 4000 Series Printers

HP LaserJet

4000

Ethernet 10-T/ 10-2

Max. # input bins 3434

Standard RAM 4 MB internal 4 MB internal 8 MB internal 8 MB internal

250-Sheet Tray not available 2 standard not available 2 standard

500-Sheet Tray standard optional standard optional

500-Sheet Universal Tray

optional optional standard standard

optional optional optional optional

HP LaserJet

4000 T

HP LaserJet

4000 N

HP LaserJet

4000 TN

Printer Features

1-3

Table 1-2. Comparison of HP LaserJet 4000 Series Printers (continued)

HP LaserJet

4000

1 GB EIO Drive optional optional optional optional

Envelope feeder available available available available

LocalTalk optional optional standard standard

10Base-2 optional optional optional optional

Duplexer optional optional optional optional

HP LaserJet

4000 T

HP LaserJet

4000 N

HP LaserJet

4000 TN

1-4 Printer Description

Identification

Model and Serial Numbers

The model number and serial numbers are listed on identification labels located under the top cover on the right side of the printer. The model number is alphanumeric, such as USEB000194 for the HP LaserJet 4000 N printer.

The serial number contains information about the Country of Origin, the Revision Level, the Production Code, and Production Number of the printer.

The rear labels also contain power rating and regulatory information as shown in Figure 1-1.

Figure 1-1

Sample Labels

Identification

1-5

Site Requirements

The following environmental specifications must be maintained to ensure the proper operation of the printer. Consider the following points before installing the printer:

z Install in a well-ventilated, dust-free area. z Install on a hard, flat and continuous surface, with all four printer

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

z Ensure adequate power is supplied. Printer power requirements

are listed in Table 1-3.

z Install where temperature and humidity is stable, aw a y from water

sources, humidifiers, air conditioners, refrigerators, or other major

appliances.

z Install away from direct sunlight, open flames, or ammonia fumes.

If the printer is placed near a window, make sure the window has

a curtain or blind to block any direct sunlight.

z Install with enough space around the printer for proper access

and ventilation.

z Install printer away from the direct flow of exhaust from air

ventilation systems.

Table 1-3. Electrical Specifications

Volts Frequency Amps Watts (typical)

100-127 VAC±10% 50/60 Hz ±3Hz 8 amps printing = 330

standby = 18 PowerSave On = 16 (EPA

NERGY STAR

220-240 VAC±10% 50/60 Hz ±3Hz 4 amps printing = 330

standby = 18 PowerSave On = 16 (EPA

NERGY STAR

®)

1-6 Printer Description

Space Requirements

39.67 inches (100.76 cm)

full length, trays and rear output bin open

16.77 inches (42.6 cm)

printer only, rear output bin closed

15.4 inches (39.0 cm)

HP LaserJet

4000/4000 N

18.5 inches (46.99 cm)

with cover open

13.3 inches

(34.3 cm)

with cover closed

HP LaserJet

4000 T/4000 TN

20.1 inches (51.19 cm)

with cover open

Figure 1-2

with cover closed

Printer Dimensions

Printer Weight (without toner cartridge)

HP LaserJet 4000/4000 N printers: 39.27 lb (17.85 kg)

HP LaserJet 4000 T/4000 TN printers: 45.66 lb (20.71 kg)

Site Requirements

15.5 inches

(38.5 cm)

1-7

Environmental Requirements

Table 1-4. Printer and Toner Cartridge Environmental Conditions

Item Operating Storage

Temperature

Relative Humidity 20-80% RH (with no

50-91

F (10-32° C)

condensation)

Table 1-5. Acoustic Emissions (Per ISO 9296)

Printer State Sound Power

Printing, 17 pages per minute (ppm)

Printing, 8 ppm L

PowerSave L

= 6.6 bels (A)

wad

= 6.2 bels (A)

wad

= 0 bels (A)

wad

32 TO 95°F (0 to 35°C)

10% TO 95% RH

1-8 Printer Description

Paper Specifications

The following tables show paper specifications for the printer.

Table 1-6. Paper Specifications, Tray 1

Supported

Dimensions

Weight Capacity

Paper

Minimum Size (custom)

Maximum Size 8.5 by 14 in

Transparencies

Labels Thickness:

Envelopes 20 to 28 lb

1. The printer supports a wide range of paper sizes. Check the printer software for supported sizes. To print custom-size paper see the user’s guide.

2. Capacity may vary depending on paper weight and thickness, and environmental conditions.

3 by 5 in (76 by 127 mm)

(216 by 356 mm)

Same as minimum

and maximum paper

sizes listed above.

16 to 53 lb

(60 to 199 g/m

Thickness:

0.0039 in to 0.0045 in (0.099 to 0.114 mm)

0.005 in to 0.007 in (0.127 mm to

0.178 mm)

(75 to 105 g/m

)

100 sheets of 20 lb

(75 g m2) paper

75 transparencies

50 labels

10 envelopes

Paper Specifications

1-9

Table 1-7. Paper Specifications, Tray 2 (HP LaserJet 4000/4000 N)

Supported

Dimensions

Weight Capacity

Paper

Letter 8.5 by 11 in

(216 by 279 mm)

A4 8.3 by 11.7 in

(210 by 297 mm)

16 to 28 lb

(60 to 105 g/m

)

500 sheets of 20 lb

(75 g/m

) paper

50-100 transparencies

Legal 8.5 by 14 in

(216 by 356 mm)

1. The printer supports a wide range of paper sizes. Check the pr inter software fo r suppo rted sizes.

2. Capacity may vary depending on paper weight and thickness, and environmental conditions.

Table 1-8. Paper Specifications, Trays 2 and 3 (HP LaserJet 4000 T/4000 TN)

Supported

Dimensions

Weight Capacity

Paper

Letter 8.5 by 11 in

(216 by 279 mm)

A4 8.3 by 11.7 in

(210 by 297 mm)

Executive 7.3 by 10.5 in

(191 by 267 mm)

Legal 8.5 by 14 in

(216 by 356 mm)

16 to 28 lb

(60 to 105 g/m

)

250 sheets of 20 lb

(75 g/m

) paper

50-100 transparencies

6.9 by 9.9 in

B5 (ISO) (custom

B5 (JIS)

A5 (custom

1. The printer supports a wide range of paper sizes. Check the pr inter software fo r suppo rted sizes.

2. Capacity may vary depending on paper weight and thickness, and environmental conditions.

3. To print custom-size paper see the user’s guide.

)

(176 by 250 mm)

7.2 by 10 in (182 by 257 mm)

)

5.8 by 8.2 in (148 by 210 mm)

1-10 Printer Description

Table 1-9. Paper Specifications, Optional 500-Sheet Tray

Supported

Dimensions

Weight Capacity

Paper

Letter 8.5 by 11 in

(216 by 279 mm)

A4 8.3 by 11.7 in

(210 by 297 mm)

Executive 7.3 by 10.5 in

(191 by 267 mm)

Legal 8.5 by 14 in

(216 by 356 mm)

B5 (ISO) (custom

) 6.9 by 9.9 in

(176 by 250 mm)

16 to 28 lb

(60 to 105 g/m

)

B5 (JIS) 7.2 by 10 in

(182 by 257 mm)

A5 (custom

)

5.8 by 8.2 in (148 by 210 mm)

Custom

5.8 by 8.2 in to 8.5 by 14 in (149 by 210 mm to 216 by 356 mm)

1. The printer supports a wide range of paper sizes. Check the printer software for supported sizes.

2. Capacity may vary depending on paper weight and thickness, and environmental conditions.

3. To print custom-size paper see the user’s guide.

500 sheets of 20 lb

(75 g/m

) paper

50-100 transparencies

Table 1-10. Paper Specifications, Optional Envelope Feeder

Supported

Dimensions

Weight Capacity

Paper

Minimum Size 3.5 by 6.3 in

(90 by 160 mm)

Maximum Size 7 by 10 in

(178 by 254 mm)

1. The printer supports a wide range of paper sizes. Check the printer software for supported sizes.

2. Capacity may vary depending on paper weight and thickness, and environmental conditions.

20 to 28 lb

(75 to 105 g/m

)

75 envelopes

Paper Specifications

1-11

T ab le 1-11. P aper Specifications, Optional Duple x Printing Accessory (Duplex er)

Dimensions Weight Capacity

Letter 8.5 by 11 in

(216 by 279 mm)

A4 8.3 by 11.7 in

(210 by 297 mm)

Executive 7.3 by 10.5 in

(191 by 267 mm)

16 to 28 lb

(60 to 105 g/m

)

not applicable

Legal 8.5 by 14 in

(216 by 356 mm)

B5 (JIS) 7.2 by 10 in

(182 by 257 mm)

Supported Types of Paper

The printer supports the following types of paper:

plain

letterhead

prepunched

bond

color

rough

preprinted

transparency

labels

recycled

card stock

user-defined (5 types)

1-12 Printer Description

Guidelines for Using Paper

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

Some paper causes print quality problems, jamming, or damage to the printer.

Table 1-12. Guidelines for Using Paper

Symptom Problem with Paper Solution

Poor print quality or toner adhesion. Problems with feeding.

Dropouts, jamming, curl. Stored improperly. Store paper flat in its

Increased gray background shading.

Excessive curl. Problems with feeding.

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

Problems with feeding. Ragged edges. Use quality paper.

Note

Do not use letterhead paper that is printed with low-temperature inks,

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

Too heavy. Use lighter paper.

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

Try another kind of paper, between 100-250 Sheffield, 4-6% moisture content.

moisture-proof wrapping.

Open the rear output bin.

Open the rear output bin. Use long-grain paper.

or perforations.

such as those used in some types of thermography.

Do not use raised letterhead. The printer uses heat and pressure to fuse toner to the paper. Make

sure that any colored paper or preprinted forms use inks that are compatible with the printer’s temperature (400° F or 205° C for

0.1 second).

Paper Specifications

1-13

Paper Weight Equivalence Table

Use this table to determine approximate equivalent points in weight specifications other than U.S. bond w eight. For e xample, to determine the equivalent of 20 lb U.S. bond weight paper in U.S. cover weight, locate the bond weight (in row 3, second column) and scan across the row to the cover w eight (in the fourth column). The equivalent is 28 lb.

Shaded areas indicate a standard weight for that grade.

Table 1-13. Paper Weight Equivalence

U.S.

Post Card1 thick-

ness (mm)

U.S.

Bond

Weight

(lb)

U.S.

Text/Boo

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 17432429353964 3 4 215430364449

20 50 28 34 42 46 75 75

80 80 5 22563138465181 6 7 276837455561 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

128

157 14 15 .23 47 119 16 53 134 74 90

1. U.S. Post Card measurements are approximate. Use for reference only.

.20 43 110 60 74 90 100 163 163

65 80 97 108 176 176

110 122 199 199

1-14 Printer Description

Labels

CAUTION

To avoid damaging the printer, use only labels recommended for use in laser printers.

If you have problems printing labels, use T ray 1 and open the rear output bin.

Never print on the same sheet of labels more than once.

Label Construction

When selecting labels, consider the quality of each component:

Adhesives:

(205° C), the printer’s maximum temperature.

Arrangement:

them. Labels can peel off of sheets that have spaces between the labels, causing serious jams.

Prior to printing, labels must lie flat with no more than 0.5 in

Curl:

(13 mm) of curl in any direction.

Condition:

indications of separation.

The adhesive material should be stable at 400° F

Only use labels with no exposed backing between

Do not use labels with wrinkles, bubbles, or other

Transparencies

CAUTION

Transparencies used in the printer must be able to withstand 400° F (205° C), the printer’s maximum temperature. For best results, close the rear output bin to print transparencies to the top output bin.

T o a void damaging the printer , use only transparencies recommended for use in laser printers.

If you have problems printing transparencies, use Tray 1.

Paper Specifications

1-15

Envelopes

Envelope Construction

Envelope construction is critical. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. 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

28 lb (105 g/m

Construction: Prior to printing, envelopes should lie flat with less than 0.25 in (6 mm) curl, and should not contain air. (Envelopes that trap air may cause problems.)

Condition: Make sure envelopes are not wrinkled, nicked, or otherwise damaged.

Sizes in Tray 1: From 3 by 5 inches (76 by 127 mm) to 8.5 by 14 inches (216 by 356 mm).

Sizes in the optional envelope feeder: From 3.5 by 6.3 in (90 by 160 mm) to 7 by 10 in (178 by 254 mm).

If you do not have an optional envelope feeder, always print envelopes from Tray 1. If envelopes wrinkle, try opening the rear output bin.

), or jamming may result.

1-16 Printer Description

Envelopes with Double-Side-Seams

Double-side-seam construction has vertical seams at both ends of the envelope rather than diagonal seams. This style may be more likely to wrinkle. Be sure the seam extends all the wa y to the corner of the envelope as illustrated below.

Acceptable

Unacceptable

Figure 1-3

Envelopes with Double-Side-Seams

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 compatible with the heat and pressure in the printer. The extra flaps and strips might cause wrinkling, creasing, or jams.

Envelope Margins

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

Table 1-14. Envelope Margins

Type of Address Top Margin Left Margin

Return Address 0.6 in (15 mm) 0.6 in (15 mm)

Delivery Address 2 in (51 mm) 3.5 in (89 mm)

Note

For the best print quality , position margins no closer than 0.6 in (15 mm) from the edges of the envelope.

Paper Specifications

1-17

Envelope Storage

Proper storage of envelopes helps contribute to good print quality. Envelopes should be stored flat. If air is trapped in an envelope, creating an air bubble , then the en velope may wrinkle during printing.

Card Stock and Heavy Paper

Many types of card stock can be printed from Tray 1, including index cards and postcards. Some card stock performs better than others because its construction is better suited for feeding through a laser printer.

For optimum printer performance, do not use paper hea vier than 53 lb (199 g/m

too heavy might cause misfeeds , stacking problems , paper jams, poor toner fusing, poor print quality, or excessive mechanical wear.

Note Printing on heavier paper may be possible if the tray is not filled to

capacity, and paper with a smoothness rating of 100-180 Sheffield is used.

Card Stock Construction

) in Tray 1 or 28 lb (105 g/m2) in other trays. Paper that is

Smoothness: 36-53 lb (135-199 g/m

) card stock should have a

smoothness rating of 100-180 Sheffield. 16-36 lb (60-135 g/m card stock should have a smoothness r ating of 100-250 Sheffield.

Construction: Card stock should lie flat with less than 0.2 in (5 mm) of curl.

Condition: Make sure card stock is not wrinkled, nicked, or otherwise damaged.

Sizes: Use only card stock within the following size ranges:

• minimum: 3 by 5 in (76 by 127 mm)

• maximum: 8.5 by 14 in (216 by 356 millimeters)

)

Note Before loading card stock in Tray 1, make sure it is regular in shape

and not damaged. Also, make sure the cards are not stuck together.

Card Stock Guidelines

z If cards curl or jam, try printing from Tray 1 and opening the rear

output bin.

z Set margins at least 0.08 in (2 mm) away from the edges of the

paper.

1-18 Printer Description

Safety Information

Laser Safety Statement

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 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 Performance Standard according to the Radiation Control for Health and Safety Act of 1968. Since radiation emitted inside the printer is completely confined within protective housings and external covers, the laser beam cannot escape during any phase of normal user operation.

WARNING!

Using controls, making adjustments, or performing procedures other than those specified in this service manual may result in exposure to hazardous radiation.

Canadian DOC Regulations

Complies with Canadian EMC Class B requirements. <<Conforme á la classe B des normes canadiennes de compatibilité

électromagnétiques. << CEM>>.>>

Safety Information

1-19

FCC Regulations

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If this equipment is not installed and used in accordance with the instructions, it may cause harmful interference to radio communications. Howe ver, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

z Reorient or relocate the receiving antenna. z Increase separation between equipment and receiver. z Connect equipment to an outlet on a circuit different from that to

which the receiver is located.

z Consult your dealer or an experienced radio/TV technician.

Note Any changes or modifications to the printer that are not expressly

approved by HP could void the user’s authority to operate this equipment.

Use of a shielded interface cable is required to comply with the Class B limits of Part 15 of FCC rules.

1-20 Printer Description

Laser Statement for Finland

LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT

HP LaserJet 4000, 4000 T, 4000 N, 4000 TN -laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle.

Laitteen turvallisuusluokka on määritetty standardin EN 60825-1 (1993) mukaisesti.

VAR OITUS !

Laitteen käyttäminen muulla kuin käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

VARNING !

Om apparaten används på annat sätt än i bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.

HUOLTO

HP LaserJet 4000, 4000 T, 4000 N, 4000 TN -kirjoittimen sisällä ei ole käyttäjän huollettavissa olevia kohteita. Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkilö. Tällaiseksi huoltotoimenpiteeksi ei katsota väriainekasetin vaihtamista, paperiradan puhdistusta tai muita käyttäjän käsikirjassa lueteltuja, käyttäjän tehtäväksi tarkoitettuja ylläpitotoimia, jotka voidaan suorittaa ilman erikoistyökaluja.

VARO !

Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymättömälle lasersäteilylle laitteen ollessa toiminnassa. Älä katso säteeseen.

VARNING !

Om laserprinterns skyddshölje öppnas då apparaten är i funktion, utsättas användaren för osynlig laserstrålning. Betrakta ej strålen.

Tiedot laitteessa käytettävän laserdiodin säteilyominaisuuksista:

Aallonpituus 770-795 nm Teho 5 mW Luokan 3B laser

Safety Information

1-21

Toner Safety

Note Toner may stain clothing. Skin and clothing are best cleaned by

removing as much toner as possible with a dry tissue, then washing with cold water . Hot water causes toner to melt and permanently fuse into clothing.

A Material Safety Data Sheet (MSDS) for the toner cartridge used in the HP printers, is available through Hewlett-Packard by mail or fax.

Mail. To obtain a MSDS for the C4127X HP LaserJet Toner Imaging System through the mail, call the Customer Information Center (CIC) at 1-800-752-0900 between 6 am and 5 pm Pacific Standard Time.

Fax. To obtain a MSDS for the C4127X HP LaserJet Toner Imaging System by fax, call the HP FIRST number at (800) 333-1917 (U.S. and Canada) and request document number 1512.

Note To get documents from HP FIRST by fax, you must use a Group 3 f ax

machine.

1-22 Printer Description

+ 346 hidden pages