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 _____________

© Copyright Hewlett-Packard

Company 1997

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

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.

ENERGY 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

EN	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

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

Contents-2

EN

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

EN	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

EN

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

EN	Contents-5

Contents-6

EN

1 Printer Description

Overview

This chapter discusses the following:

†Printer Features

†Identification

†Site Requirements

†Paper Specifications

†Safety Information

EN	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	300 dpi with PCL5e/HP’s PostScriptTM Level 2 emulation (PS)
	600 dpi with PCL5e/PS
	HP FastRes 1200 (PCL6 only)
	HP ProRes 1200 (PCL6, PS)
Typefaces	110 Scalable TrueTypeTM (80 built-in, 30 via FontSmart, all PS
	and PCL accessible)
Memory Options	HP LaserJet 4000/4000 T: 4 MB RAM standard
	HP LaserJet 4000 N/4000 TN: 8 MB RAM standard
	Optional Memory:
	2, 4, 8, 16 MB EDO DIMMs
	32 MB SDRAM DIMM
Expansion Slots	3 100-pin DIMM slots
	2 enhanced I/O (EIO) slots
Interface	Bidirectional IEEE 1284 compliant parallel interface
	RS-232 9-pin serial
	Paper Handling Connector (PHC)
Optional Networking	10Base-T and 10Base-2
	10/100Base-TX
	Token Ring
	LocalTalk
Mass Storage Options	2 and 4 MB Flash DIMMs

1-2 Printer Description

EN

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	HP LaserJet	HP LaserJet	HP LaserJet
	4000	4000 T	4000 N	4000 TN
Ethernet 10-T/	optional	optional	standard	standard
10-2
Max. # input bins	3	4	3	4
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	optional	optional	optional	optional
Universal Tray

EN	Printer Features 1-3

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

	HP LaserJet	HP LaserJet	HP LaserJet	HP LaserJet
	4000	4000 T	4000 N	4000 TN
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

1-4 Printer Description

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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

EN	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:

zInstall in a well-ventilated, dust-free area.

zInstall on a hard, flat and continuous surface, with all four printer feet level. Do not install on carpet or other soft surfaces.

zEnsure adequate power is supplied. Printer power requirements are listed in Table 1-3.

zInstall where temperature and humidity is stable, away from water sources, humidifiers, air conditioners, refrigerators, or other major appliances.

zInstall 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.

zInstall with enough space around the printer for proper access and ventilation.

zInstall 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
			ENERGY STAR®)
220-240 VAC±10%	50/60 Hz ±3Hz	4 amps	printing = 330
			standby = 18
			PowerSave On = 16 (EPA
			ENERGY STAR®)

1-6 Printer Description

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Space Requirements

39.67 inches (100.76 cm)	16.77 inches (42.6 cm)
full length, trays and rear output bin open	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

15.5 inches

(38.5 cm) with cover closed

Figure 1-2 Printer Dimensions

Printer Weight (without toner cartridge)

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

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

EN	Site Requirements 1-7

Environmental Requirements

Table 1-4. Printer and Toner Cartridge Environmental Conditions

Item	Operating	Storage
Temperature	50-91° F (10-32° C)	32 TO 95°F (0 to 35°C)
Relative Humidity	20-80% RH (with no	10% TO 95% RH
	condensation)

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

Printer State	Sound Power
Printing, 17 pages per	Lwad= 6.6 bels (A)
minute (ppm)
Printing, 8 ppm	Lwad= 6.2 bels (A)
PowerSave	Lwad= 0 bels (A)

1-8 Printer Description

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Paper Specifications

The following tables show paper specifications for the printer.

Table 1-6. Paper Specifications, Tray 1

Supported	Dimensions1	Weight	Capacity2
Paper
Minimum Size	3 by 5 in
(custom)	(76 by 127 mm)	16 to 53 lb	100 sheets of 20 lb
		(60 to 199 g/m2)	(75 g m2) paper
Maximum Size	8.5 by 14 in
	(216 by 356 mm)
Transparencies		Thickness:
		0.0039 in to 0.0045 in	75 transparencies
		(0.099 to 0.114 mm)
Labels	Same as minimum	Thickness:
	and maximum paper	0.005 in to 0.007 in	50 labels
	sizes listed above.	(0.127 mm to
		0.178 mm)
Envelopes		20 to 28 lb	10 envelopes
		(75 to 105 g/m2)

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.

EN	Paper Specifications 1-9

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

	Supported	Dimensions1	Weight	Capacity2
	Paper
	Letter	8.5 by 11 in
		(216 by 279 mm)		500 sheets of 20 lb
			16 to 28 lb
	A4	8.3 by 11.7 in
				(75 g/m2) paper
		(210 by 297 mm)	(60 to 105 g/m2)
				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 printer software for supported 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		Dimensions1	Weight	Capacity2
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)	16 to 28 lb	250 sheets of 20 lb
				(75 g/m2) paper
Legal		8.5 by 14 in
			(60 to 105 g/m2)
		(216 by 356 mm)		50-100 transparencies
3	)	6.9 by 9.9 in
B5 (ISO) (custom		(176 by 250 mm)
B5 (JIS)		7.2 by 10 in
		(182 by 257 mm)
A5 (custom3)		5.8 by 8.2 in
		(148 by 210 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.

1-10 Printer Description

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

	Supported	Dimensions1		Weight	Capacity2
	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)			500 sheets of 20 lb
				16 to 28 lb
	B5 (ISO) (custom3)	6.9 by	9.9 in
					(75 g/m2) paper
		(176 by 250 mm)		(60 to 105 g/m2)	50-100 transparencies
	B5 (JIS)	7.2 by	10 in
		(182 by 257 mm)
	A5 (custom3)	5.8 by	8.2 in
		(148 by 210 mm)
	Custom3	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.

Table 1-10. Paper Specifications, Optional Envelope Feeder

	Supported	Dimensions1	Weight	Capacity2
	Paper
	Minimum Size	3.5 by 6.3 in
		(90 by 160 mm)	20 to 28 lb	75 envelopes
			(75 to 105 g/m2)
	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.

EN	Paper Specifications 1-11

Table 1-11. Paper Specifications, Optional Duplex Printing Accessory (Duplexer)

	Dimensions	Weight	Capacity
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
Executive	7.3 by 10.5 in		not applicable
	(191 by 267 mm)	(60 to 105 g/m2)
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:

z	plain	z	preprinted
z	letterhead	z	transparency
z	prepunched	z	labels
z	bond	z	recycled
z	color	z	card stock
z	rough	z	user-defined (5 types)

1-12 Printer Description

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Guidelines for Using Paper

For best results, use conventional 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.

Increased gray background shading.

Excessive curl. Problems with feeding.

Jamming, damage to printer.

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

Stored improperly.

Too heavy.

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

Cutouts or perforations.

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

Store paper flat in its moisture-proof wrapping.

Use lighter paper.

Open the rear output bin.

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

Do not use paper with cutouts or perforations.

Problems with feeding. Ragged edges. Use quality paper.

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

EN	Paper Specifications 1-13

Paper Weight Equivalence Table

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

Shaded areas indicate a standard weight for that grade.

Table 1-13. Paper Weight Equivalence

	U.S.	U.S.	U.S.	U.S.	U.S.	U.S.	U.S. Tag	Europe	Japan
	Post	Bond	Text/Boo	Cover	Bristol	Index	Weight	Metric	Metric
	Card1	Weight	k	Weight	Weight	Weight	(lb)	Weight	Weight
	thick-	(lb)	Weight	(lb)	(lb)	(lb)		(g/m2)	(g/m2)
	ness		(lb)
	(mm)
1		16	41	22	27	33	37	60	60
2		17	43	24	29	35	39	64	64
3		20	50	28	34	42	46	75	75
4		21	54	30	36	44	49	80	80
5		22	56	31	38	46	51	81	81
6		24	60	33	41	50	55	90	90
7		27	68	37	45	55	61	100	100
8		28	70	39	49	58	65	105	105
9		32	80	44	55	67	74	120	120
10		34	86	47	58	71	79	128	128
11		36	90	50	62	75	83	135	135
12	.18	39	100	55	67	82	91	148	148
13	.19	42	107	58	72	87	97	157	157
14	.20	43	110	60	74	90	100	163	163
15	.23	47	119	65	80	97	108	176	176
16		53	134	74	90	110	122	199	199

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

1-14 Printer Description

EN

CAUTION

CAUTION

Labels

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

If you have problems printing labels, use Tray 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:

zAdhesives: The adhesive material should be stable at 400° F (205° C), the printer’s maximum temperature.

zArrangement: Only use labels with no exposed backing between them. Labels can peel off of sheets that have spaces between the labels, causing serious jams.

zCurl: Prior to printing, labels must lie flat with no more than 0.5 in (13 mm) of curl in any direction.

zCondition: Do not use labels with wrinkles, bubbles, or other indications of separation.

Transparencies

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.

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

If you have problems printing transparencies, use Tray 1.

EN	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:

zWeight: The weight of the envelope paper should not exceed 28 lb (105 g/m2), or jamming may result.

zConstruction: 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.)

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

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

zSizes 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.

1-16 Printer Description

EN

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 way 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.

EN	Paper Specifications 1-17

Note

Note

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 envelope 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 heavier than 53 lb

(199 g/m2) in Tray 1 or 28 lb (105 g/m2) in other trays. Paper that is too heavy might cause misfeeds, stacking problems, paper jams, poor toner fusing, poor print quality, or excessive mechanical wear.

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

zSmoothness: 36-53 lb (135-199 g/m2) card stock should have a smoothness rating of 100-180 Sheffield. 16-36 lb (60-135 g/m2) card stock should have a smoothness rating of 100-250 Sheffield.

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

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

zSizes: 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)

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

zIf cards curl or jam, try printing from Tray 1 and opening the rear output bin.

zSet margins at least 0.08 in (2 mm) away from the edges of the paper.

1-18 Printer Description

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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>>.>>

EN	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. However, 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:

zReorient or relocate the receiving antenna.

zIncrease separation between equipment and receiver.

zConnect equipment to an outlet on a circuit different from that to which the receiver is located.

zConsult 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

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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.

VAROITUS !

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

EN	Safety Information 1-21

Note

Note

Toner Safety

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 [phone] (U.S. and Canada) and request document number 1512.

To get documents from HP FIRST by fax, you must use a Group 3 fax machine.

1-22 Printer Description

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