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 cop yright
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.

NERGY STAR

E

®

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

EN

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

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

EN

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

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

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

TM

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

TM

Level 2 emulation (PS)

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

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

EN

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

EN

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

EN

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

E

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

standby = 18
PowerSave On = 16 (EPA

NERGY STAR

E

®)

®)

1-6 Printer Description

EN

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

EN

with cover closed

Printer Dimensions

Printer Weight (without toner cartridge)

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

z

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

z

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

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

EN

Paper Specifications

The following tables show paper specifications for the printer.

Table 1-6. Paper Specifications, Tray 1

Supported

Dimensions

1

Weight Capacity

2

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

2

)

2

)

100 sheets of 20 lb

(75 g m2) paper

75 transparencies

50 labels

10 envelopes

EN

Paper Specifications

1-9

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

Supported

Dimensions

1

Weight Capacity

2

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

2

)

500 sheets of 20 lb

2

(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

1

Weight Capacity

2

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

2

)

250 sheets of 20 lb

(75 g/m

2

) paper

50-100 transparencies

6.9 by 9.9 in

3

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)

3

)

5.8 by 8.2 in
(148 by 210 mm)

1-10 Printer Description

EN

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

Supported

Dimensions

1

Weight Capacity

2

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

3

) 6.9 by 9.9 in

(176 by 250 mm)

16 to 28 lb

(60 to 105 g/m

2

)

B5 (JIS) 7.2 by 10 in

(182 by 257 mm)

A5 (custom

3

)

5.8 by 8.2 in
(148 by 210 mm)

Custom

3

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

2

(75 g/m

) paper

50-100 transparencies

Table 1-10. Paper Specifications, Optional Envelope Feeder

Supported

Dimensions

1

Weight Capacity

2

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.

EN

20 to 28 lb

(75 to 105 g/m

2

)

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

2

)

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:

z

plain

z

letterhead

z

prepunched

z

bond

z

color

z

rough

z

preprinted

z

transparency

z

labels

z

recycled

z

card stock

z

user-defined (5 types)

1-12 Printer Description

EN

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.

EN

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

k

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

64

81

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

EN

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:

z

Adhesives:

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

z

Arrangement:

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

z

z

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

EN

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:

z

Weight: The weight of the envelope paper should not exceed

2

28 lb (105 g/m

z

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.)

z

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

z

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

z

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

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 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

EN

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

z

z

z

z

2

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

2

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)

2

)

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

EN

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. 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

EN

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

EN

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 [phone] (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

EN

Environmental Product Stewardship

Protecting the Environment

Hewlett-Packard Company is committed to providing quality products
in an environmentally-sound manner. The printer has been designed
to minimize impacts on the environment.

The printer design eliminates:

Ozone
Production

CFC Usage

The printer uses charging rollers in the electrophotographic process and
therefore generates no appreciable ozone gas (0

Class I U.S. Clean Air Act stratospheric ozone-depleting chemicals
(chlorofluorocarbons [CFCs], for example) have been eliminated from the
manufacturing of the printer and packaging.

The printer design reduces:

Energy
Consumption

Energy usage drops from 330 watts (W) during printing to as little as 16 W
while in low-power (P owerSav e) mode. This sa ves energ y without affecting
the high performance of the printer. This product qualifies for the E

TAR

S

® Program (U.S. and Japan). E

established to encourage the development of energy-efficient office
products. The E
Environmental Protection Agency.

).

3

NERGY STAR

NERGY STAR

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

As an E
Company has determined that this product meets
E

NERGY STAR

NERGY STAR

Guidelines for energy efficiency.

is a voluntary program

partner, Hewlett-Packard

NERGY

EN

Safety Information

1-23

1-24 Printer Description

EN

2

Service Approach

Overview

This chapter discusses the following:

Service Approach



Parts and Supplies



Warranty Statement



EN

Overview

2-1

Service Approach

Repair of the printer normally begins with use of the printer’s internal
diagnostics in conjunction with the troubleshooting procedures in
Chapter 7. Once a faulty part is located, repair is generally
accomplished by assembly level replacement of Field Replaceable
Units (FRUs). Some mechanical assemblies may be repaired at the
subassembly lev el. PCA component replacement is not supported by
Hewlett-Packard.

2-2 Service Approach

EN

Parts and Supplies

Ordering Information

Field replaceable and accessory part numbers are found in Chapter 8
of this manual. Replacement parts may be ordered from HP’s Service
Materials Organization (SMO) or Support Materials Europe (SME).

Use only accessories specifically designed for this printer.
Accessories can be ordered from an authorized service or support
provider. See page 2-5 and page 8-4 for more information.

EN

Parts and Supplies

2-3

Helpful Documentation

Table 2-1 lists part numbers to order documentation.

Table 2-1. Helpful Documentation

Item Description or Use Part Number

HP LaserJet Printer Family
Paper Specification Guide

PCL 5/PJL Technical
Reference Documentation
Package

HP LaserJet 4000, 4000 T,
4000 N, and 4000 TN Printers
User’s Guide

HP LaserJet 4000 and
4000 N Printers Getting
Started Guide

HP LaserJet 4000 T and
4000 TN Printers Getting
Started Guide

HP LaserJet 4000, 4000 T,
4000 N, and 4000 TN Printers
Quick Reference Guide

A guide to using paper and
other print media with
HP LaserJet printers.

A guide to using printer
commands with HP LaserJet
printers.

An additional copy of the
user’s guide.

An additional copy of the
getting started guide.

An additional copy of the
getting started guide.

An additional copy of the quick
reference guide.

5021-8909

5021-0330

C4118-90901 (English)

C4118-90972 (English)

C4119-90901 (English)

C4118-90926 (English)

User’s Documentation
Bundle, HP LaserJet 4000 and
4000 N Printers

User’s Documentation
Bundle, HP LaserJet 4000 T
and 4000 TN

2-4 Service Approach

An additional copy of the
user’s guide, the getting
started guide, and the quick
reference guide.

An additional copy of the
user’s guide, the getting
started guide, and the quick
reference guide.

C4118-99001
(English)

C4119-99001
(English)

EN

Phone Numbers for Ordering

SMO (Service Materials Organization)

z

1-800-227-8164 (U.S. only)
SME (Support Materials Europe)

z

(49 7031) 142253

Exchange Program

HP offers remanufactured assemblies for some parts. These are
identified in Chapter 8 and can be ordered through Service Materials
Organization (SMO), or Support Materials Europe (SME).

Consumables

Paper and Toner Cartridges can be ordered directly from Hewlett­Packard. See Chapter 8 for ordering information.

Technical Assistance

HP ASAP (Automated Support Access Program) provides free
technical support information 24 hours a day, 7 days a week. The
ASAP system includes HP AUDIO-TIPS and HP FIRST, both
explained below . The ASAP service 1-800-333-1917 (U .S.) requires a
touchtone phone.

EN

To order additional printer drivers for software applications, call HP’s
Distribution Center (HPD) 1-303-739-4009.

HP AUDIO-TIPS

HP AUDIO-TIPS is an interactive voice response system providing
prerecorded answers to the questions asked most frequently by
HP LaserJet printer users. Helpful “System Maps” to the HP AUDIO­TIPS recordings are available by fax through HP FIRST.

Parts and Supplies

2-5

HP FIRST

HP FIRST (Fax Information Retrieval Support Technology) is a
phone-in fax service that provides technical information for
HP LaserJet users as well as service personnel. Receiving a fax
requires a group 3 facsimile machine or fax card. Service related
information includes:

z Service notes (HP Authorized dealers)
z Application notes
z Product Data Sheets
z Material Safety Data Sheets (MSDS)
z Typeface and accessory information
z Printer support software information
z Toner information
z Driver request form and Software Matrix

HP FIRST, U.S.

Call the HP ASAP system (1-800-333-1917) and follow the voice
prompts to enter HP FIRST.

HP FIRST, Europe

Call HP FIRST at one of the following numbers:
U.K., 0800-96-02-71
Belgium (Dutch), 078-111906
Switzerland (German), 155-1527
Netherlands, 06-0222420
Germany, 0130-810061
Austria, 0660-8128
For English service outside the above countries, call (31) 20-681-

5792.

HP CompuServe Forum

CompuServe™ members can download a variety of support
materials including product data sheets, software application notes,
and printer drivers for many popular software applications. Members
may also post and reply to questions in an interactive format. To
access the HP Forum, type GO HP at any prompt. For more
information, or to join CompuServe, call 1-800-524-3388.

2-6 Service Approach

EN

North American Response Center (NARC)

The North American Response Center (NARC) is available to assist
service technicians. The NARC can be reached at 1-800-544-9976.

Other Areas

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

EN

Parts and Supplies

2-7

Toner Cartridge Information

The Toner Cartridge is designed to simplify replacement of the major
“consumable” parts. The Toner Cartridge contains the printing
mechanism and a supply of toner.

At 5% page coverage, a Toner Cartridge will print approximately
6,000 or 10,000 pages (depending on the model installed). However,
a Toner Cartridge should print more pages if regularly printing pages
with less coverage, such as short memos. The cartridge may print
fewer pages if routinely printing dense print.

Note For best results, always use a Toner Cartridge before the expiration

date stamped on the Toner Cartridge’s box.

Refilled Toner Cartridges

While Hewlett-Packard does not prohibit the use of refilled Toner
Cartridges during the warranty period or while the printer is under a
maintenance contract, it is not recommended for the following
reasons:

z Repairs resulting from the use of refilled Toner Cartridges are not

covered under Hewlett-Packard warranty or maintenance
contracts.

z Hewlett-Packard has no control or process to ensure that a

refilled Toner Cartridge functions at the high level of reliability of a
new HP LaserJet Toner Cartridge. Hewlett-Packard also cannot
predict what the long term reliability effect on the printer is from
using different toner formulations found in refilled cartridges.

z The print quality of HP LaserJet Toner Cartridges influences the

customer’s perception of the printer. Hewlett-Packard has no
control over the actual print quality of a refilled Toner Cartridge.

Recycling Toner Cartridges

In order to reduce waste, Hewlett-Packard offers a recycling program
for used Toner Cartridges. Cartridge components that do not wear out
are recycled. Plastics and other materials are recycled. HP pays the
shipping costs from the user to the recycling plant. For each cartridge
returned, HP donates one U.S. dollar to be shared by the Nature
Conservancy and the National Wildlife Federation. To join this
recycling effort, follow the instructions inside the Toner Cartridge’s
box.

2-8 Service Approach

EN

Warranty Statement

This warranty gives specific legal rights. There may also be other
rights which vary from area to area. Refer to the User’s Guide for
further warranty information, or see the warranty card included with
the printer.

EN

Warranty Statement

2-9

2-10 Service Approach

EN

3

Printer Operation

Overview

This chapter discusses the following:

Using the Control Panel



Control Panel Menus



Service Mode



Testing the Printer



Resetting the Printer



System Configuration



Printer I/O Configuration



EN

Overview

3-1

Using the Control Panel

Control Panel Layout

The printer’s Control Panel consists of the following:

READY

2-line

display

Ready

Data

Attention

Figure 3-1 Control Panel Layout

Control Panel Lights

Table 3-1. Control Panel Lights

Light Indication

Go

Cancel

Job

Menu

Item

– Value +

Select

Ready The printer is ready to print.

Data The printer is processing information.

Attention Action is required. See the Control Panel display.

3-2 Printer Operation

EN

Control Panel Keys

Table 3-2. Control Panel Keys

Key Function

z

[Go]

Places the printer either online or offline.

z

Prints any data residing in the printer’s buffer.

z

Allows the printer to resume printing after being offline.
Clears most printer messages and places the printer online.

z

Allows the printer to continue printing with an error message
such as

PAPER SIZE

z

Confirms a manual feed request if Tray 1 is loaded and

TRAY 1 MODE=CASSETTE

Handling Menu in the printer’s Control Panel.

z

Overrides a manual feed request from Tray 1 by selecting
paper from the next available tray.

z

Exits the Control Panel menus. (To save a selected Control
Panel setting, first press

TRAY x LOAD [TYPE] [SIZE] or UNEXPECTED

.

has been set from the Paper

[Select]

.)

[Cancel Job]

[Menu]

[Item]

[- Value +]

[Select]

Cancels the print job that the printer is processing. The time it
takes to cancel depends on the size of the print job. (Press it only
once.)

Cycles through the Control Panel menus. Press the right end of
the button to move forward or the left end of the button to move
backward.

Cycles through the selected menu’s items. Press the right end of
the button to move forward or the left end of the button to move
backward.

Cycles through the selected menu item’s values. Press
move forward or

z

Saves the selected value f or that item. An asterisk (*) appears
next to the selection, indicating that it is the new default.
Default settings remain when the printer is switched off or
reset (unless you reset all factory defaults from the Resets
Menu).

z

Prints one of the printer information pages from the Control
Panel.

[-]

to move backward.

[+]

to

EN

Using the Control Panel

3-3

Settings and Defaults

The printer makes most printing decisions based on either temporary
settings or permanent defaults.

Note Settings sent from software applications override printer defaults.

Table 3-3. Settings and Defaults

Setting or Default Explanation

Temporary Setting A value set for the current print job by the software application.

For example, a request from the software to print three copies
instead of the Control Panel default value of one copy is a
temporary setting. The printer continues to use the temporary
setting until it receives another software request or until it is reset.

Control Panel Default A value set at the Control Panel when you select a menu item. An

asterisk appears, indicating the default setting. The printer retains
this default when it is turned off.

Factory Default The value set for each menu item at the factory. Factory defaults

are listed in the item column in the menu tables starting on page
3-6.

Setting the Display Language

1. Press and hold [Select] while turning on the printer. Hold

[Select] until SELECT LANGUAGE appears.

2. Release [Select]. INITIALIZING appears briefly. Wait for
LANGUAGE=ENGLISH to appear.

3. Press [- Value +] repeatedly until the desired language appears.

4. Press [Select] to save your choice. An asterisk (*) will appear
beside the selected language.

3-4 Printer Operation

EN

Control Panel Menus

Note

Press

[Menu]

trays or other accessories are installed in the printer, ne w menu items
automatically appear.

for access to all Control P anel menus . When additional

To change a Control Panel setting:

1. Press

2. Press

3. Press

4. Press

5. Press

Settings in the printer driver and software application override Control
Panel settings. (Software application settings override printer driver
settings.)

If you cannot access a menu or item, it is either not an option for the
printer, or the customer’ s network administrator has locked the function.
(The Control Panel reads
customer’s network administrator.

[Menu]
[Item]
[- Value +]
[Select]

to the selection in the display, indicating that it is now the default.

[Go]

until the desired menu appears.

until the desired item appears.

until the desired setting appears.

to save the selection. An asterisk (*) appears next

to exit the menu.

ACCESS DENIED MENUS LOCKED

.) See the

EN

To print a Control Panel menu map:

To see the current settings for all of the menus and items available in
the Control Panel, print a Control Panel menu map.

1. Press

2. Press

3. Press

[Menu]
[Item]
[Select]

until

INFORMATION MENU

until

PRINT MENU MAP

to print the menu map.

appears.

appears.

Control Panel Menus

3-5

Information Menu

This menu contains printer information pages that give details about
the printer and its configuration. To print an information page, scroll to
the desired page and press [Select].

Table 3-4. Information Menu

Item Explanation

PRINT
MENU MAP

PRINT CONFIGURATION

PRINT
PCL FONT LIST

PRINT
PS FONT LIST

PRINT
FILE DIRECTORY

PRINT
EVENT LOG

The menu map shows the layout and current settings of the
Control Panel menu items.

The Configuration Page shows the printer’s current configuration.
If an HP JetDirect print server card is installed (HP LaserJet
4000 N/4000 TN printers), a JetDirect Configuration Page will
print out as well.

The PCL font list shows all the PCL fonts currently a v ailable to the
printer.

The PS font list shows all the PS fonts currently available to the
printer.

This item appears only when a mass storage device (such as an
optional flash DIMM or hard disk) containing a recognized file
system is installed in the printer. The file directory shows
information for all installed mass storage devices.

The event log lists printer events or errors.

SHOW
EVENT LOG

PRINT
PAPER PATH TEST

3-6 Printer Operation

This item allows you to view the most recent printer e v ents on the
Control Panel display. Press
log entries.

The paper path test can be used to verify that the paper path is
working properly, or to troubleshoot problems with a type of
paper.
Choose the input tray, output bin, duplexer (if available), and
number of copies.

[-Value+]

to scroll through the event

EN

Paper Handling Menu

When paper handling settings are correctly configured through the
Control Panel, you can print by choosing the type and size of paper
from the printer driver or software application.

Some items in this menu (such as duplex and manual feed) can be
accessed from a software application, or from the printer driver (if the
appropriate driver is installed). Printer driver and software application
settings override Control Panel settings.

Table 3-5. Paper Handling Menu

Item Values Explanation

ENVELOPE FEEDER
SIZE=COM10

ENVELOPE FEEDER
TYPE=PLAIN

TRAY 1 MODE=
FIRST

For supported paper sizes
see page 1-9.

For supported paper types
see page 1-9.

FIRST
CASSETTE

This item appears only when the
optional envelope feeder is installed.
Set the value to correspond with the
envelope size currently loaded in the
envelope feeder.

This item appears only when the
optional envelope feeder is installed.
Set the value to correspond with the
envelope type currently loaded in the
envelope feeder.

Determine how the printer will use
Tray 1.

FIRST

: If paper is loaded in Tray 1,
the printer will pull paper from that
tray first.

CASSETTE

assigned to Tray 1 using the

TRAY 1 SIZE

in this menu when

MODE=CASSETTE

Tray 1 to be used as a reserved tray.

:

A paper size must be

option (the next item

TRAY 1

). This allows

TRAY 1 SIZE=
LETTER

EN

For supported paper sizes
see page 1-9.

This item appears only when

MODE= CASSETTE

correspond with the paper size
currently loaded in Tray 1.

. Set the value to

TRAY 1

Control Panel Menus

3-7

Table 3-5. Paper Handling Menu (continued)

Item Values Explanation

TRAY 1 TYPE=
PLAIN

TRAY 2 TYPE=
PLAIN

TRAY 3 TYPE=
PLAIN

TRAY 4 TYPE=
PLAIN

For supported paper sizes
see page 1-9.

For supported paper sizes
see page 1-9.

For supported paper sizes
see page 1-9.

For supported paper sizes
see page 1-9.

MANUAL FEED=OFF OFF

ON

This item appears only when

MODE= CASSETTE

correspond with the paper type
currently loaded in Tray 1.

Set the value to correspond with the
paper type currently loaded in Tray 2.

This item appears only when a third
paper tray is installed. Set the value
to correspond with the paper type
currently loaded in Tray 3.

This item appears only when a fourth
paper tray is installed (available only
on the HP LaserJet 4000 T/4000 TN
printers). Set the value to correspond
with the paper type currently loaded
in Tray 4.

Feed the paper manually from Tray 1,
rather than automatically from a tray.

MANUAL FEED=ON

When
is empty, the printer goes offline
when it receives a print job and
displays

SIZE]

MANUALLY FEED [PAPER

.

. Set the value to

TRAY 1

and Tray 1

DUPLEX=OFF OFF

ON

BINDING=
LONG EDGE

LONG EDGE
SHORT EDGE

3-8 Printer Operation

This item appears only when an
optional duplexer is installed. Set the
value to

(duplex) or
(simplex) of a sheet of paper.

This item appears only when an
optional duplexer is installed and the
duplex option is on. Choose the
binding edge when duplexing
(printing on both sides of paper). ‘

ON

to print on both sides

OFF

to print on one side

EN

Table 3-5. Paper Handling Menu (continued)

Item Values Explanation

OVERRIDE A4 WITH
LETTER=NO

CONFIGURE FUSER MODE
MENU=NO

[TYPE]=
NORMAL

NO
YES

NO
YES

NORMAL
LOW
HIGH

Choose
paper when an A4 job is sent, but no
A4 size paper is loaded in the printer
(or to print on A4 size paper when a
letter job is sent, but no letter paper
is loaded in the printer).

Configure the fuser mode associated
with each paper type. (This is only
necessary if you are experiencing
problems printing on certain paper
types.)

NO

not accessible.

YES

below).

YES

to print on letter size

:

The fuser mode menu items are

:

Additional items appear (see

Note

To see the default fuser mode for
each paper type, select
back to the Information Menu, and
print a menu map (page 3-6).

This item appears only when

YES

, scroll

CONFIGURE FUSER MODE
MENU=YES

NORMAL

to
The exception is as follows:

. Most paper types are set
by default.

ROUGH=HIGH

ROUGH=HIGH

(The
available with A4, letter, and legal
sizes.)

For a complete list of supported paper
types, see page 1-9.

setting is only

EN

Control Panel Menus

3-9

Print Quality Menu

Some items in this menu can be accessed from a software
application, or from the printer driver (if the appropriate driver is
installed). Printer driver and software application settings override
Control Panel settings.

Table 3-6. Print Quality Menu

Item Values Explanation

RESOLUTION=
FASTRES 1200

300
600
FASTRES 1200
PRORES 1200

Select the resolution from the

following values:

:

300

Produces draft print
quality at the printer’s
maximum speed (16 ppm).
300 dpi (dots per inch) is
recommended for some
bitmapped fonts and graphics,
and for compatibility with the
HP LaserJet III family of
printers.

:

600

Produces high print
quality at the printer’s
maximum speed (16 ppm).

FASTRES 1200

optimum print quality
(comparable to 1200 dpi) at
the printer’s maximum speed
(16 ppm).

PRORES 1200

optimum print quality (true
1200 dpi) at half the printer’s
maximum speed (8 ppm).
When the resolution is
changed, any downloaded
resources (such as fonts or
macros) will need to be
downloaded again, unless
they are stored on an optional
hard disk or flash DIMM.

:

Produces

:

Produces

Note

It is best to change the
resolution from the printer
driver or software application.
(Driver and software settings
override Control Panel
settings.)

3-10 Printer Operation

EN

Table 3-6. Print Quality Menu (continued)

Item Values Explanation

RET=MEDIUM OFF

LIGHT
MEDIUM
DARK

ECONOMODE=OFF OFF

ON

Use the printer’s Resolution
Enhancement technology
(REt) setting to produce print
with smooth angles, curves,
and edges.
REt does not affect print
quality when the print
resolution is set to
ProRes 1200. All other print
resolutions, including
FastRes 1200, benefit from
REt.

Note

It is best to change the REt
setting from the printer driver
or software application. (Driver
and software 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 by up to
50%.

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 Toner
Cartridge.)

Note

It is best to turn EconoMode
on or off from the printer driver
or software application. (Driver
and software settings override
Control Panel settings.)

EN

Control Panel Menus

3-11

Table 3-6. Print Quality Menu (continued)

Item Values Explanation

TONER DENSITY=3 1

CREATE CLEANING PAGE

2
3
4
5

No value to select.

Lighten or darken the print on
the page by changing the
toner density setting. The
settings range from 1 (light) to
5 (dark), but the default setting
of 3 usually produces the best
results.
Use a lower toner density
setting to save toner.

Note

It is best to change the toner
density from the printer driver
or software application. (Driver
and software settings override
Control Panel settings.)

[Select]

Press
cleaning page (for cleaning
excess toner from the paper
path).
In order for the cleaning page
to work properly, print the
page on copier grade paper
(not bond or rough paper).
Follow the instructions on the
cleaning page.

to print a

PROCESS CLEANING PAGE

3-12 Printer Operation

No value to select. This item appears only after a

cleaning page has been
generated (as described
above).

[Select]

Press
cleaning page.

to process the

EN

Printing Menu

Some items in this menu can be accessed from a software
application, or from the printer driver (if the appropriate driver is
installed). Printer driver and software application settings override
Control Panel settings.

Table 3-7. Printing Menu

Item Values Explanation

COPIES=1 1 to 999

PAPER=
LETTER

(110V printers)
and

For supported paper sizes see
page 1-9.

ENVELOPE=
COM10

(110V printers)

Set the default number of
copies by selecting any
number from 1 to 999. Press

[-Value+]

the setting by increments of 1,
or hold down
scroll by increments of 10.

once to change

[-Value+]

to

Note

It is best to set the number of
copies from the printer driver
or software application. (Driver
and software settings override
Control Panel settings.)

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

Note

The defaults indicated here
are for 110V printers. The
default paper size for 220V

A4

printers is
envelope size for 220V
printers is

. The default

DL

.

CONFIGURE CUSTOM
PAPER=NO

EN

NO
YES

NO:

The custom paper menu

items are not accessible.

YES:

The custom paper menu
items appear (see the next
item).

Control Panel Menus

3-13

Table 3-7. Printing Menu (continued)

Item Values Explanation

UNIT OF MEASURE=INCHES

(110V printers)
or

MILLIMETERS

(220V printers)

X DIMENSION=

8.5 INCHES

(110V printers)
or

216 MILLIMETERS

(220V printers)

Y DIMENSION=

14.0 INCHES

(110V printers)
or

356 MILLIMETERS

(220V printers)

ORIENTATION=
PORTRAIT

INCHES
MILLIMETERS

3.00 to 8.5 INCHES

(110V printers)
or

76 to 216 MILLIMETERS

(220V printers)

5.00 to 14.0 INCHES

(110V printers)
or

127 to 356 MILLIMETERS

(220V printers)

PORTRAIT
LANDSCAPE

This item appears only when

CONFIGURE CUSTOM
PAPER=YES

measurement for the custom
paper size.

This item appears only when

. Select the unit of

CONFIGURE CUSTOM
PAPER=YES

dimension to be fed into the
printer (short edge).

This item appears only when

. Select the

CONFIGURE CUSTOM
PAPER=YES

dimension (long edge).

Determine the default
orientation of print on the
page.

. Select the other

Note

It is best to set the page
orientation from the printer
driver or software application.
(Driver and software settings
override Control Panel
settings.)

FORM=60 LINES

(110V printers)
or

64 LINES

(220V printers)

3-14 Printer Operation

5 to 128

Sets vertical spacing from 5 to
128 lines for default paper
size. Press
change the setting by
increments of 1, or hold down

[-Value+]

increments of 10.

[-Value+]

to scroll by

once to

EN

Table 3-7. Printing Menu (continued)

Item Values Explanation

PCL FONT
SOURCE=INTERNAL

PCL FONT
NUMBER=0

PCL FONT
PITCH= 10.00

PCL SYMBOL
SET=PC-8

INTERNAL
SOFT
SLOT 1, 2, or 3

0 to 999

0.44 to 99.99

PC-8

many others

INTERNAL
SOFT:
SLOT 1, 2

in one of the three DIMM slots.

The printer assigns a number
to each font and lists them on
the PCL Font List. The font
number appears in the Font #
column of the printout.

This item might not appear,
depending on the font
selected. Press
once to change setting by
increments of .01 for pitch, or
hold down
by increments of 1.

Select any one of several
available symbol sets from the
printer’s 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. Order the

PCL 5/PJL Technical
Reference Documentation
Package

or for more information see the
user’s guide.

: Internal fonts.

Permanent soft fonts.

, or 3: Fonts stored

[-Value+]

[-Value+]

for symbol set charts

to scroll

EN

Control Panel Menus

3-15

Table 3-7. Printing Menu (continued)

Item Values Explanation

COURIER=REGULAR REGULAR

DARK

WIDE A4=NO NO

YES

APPEND CR TO LF=
NO

NO
YES

Select the version of Courier
font to use:

REGULAR

font available on the
HP LaserJet 4 series printers.

DARK

available on the HP LaserJet III
series printers.

Both fonts are not available at
the same time.

The Wide A4 setting changes
the number of characters that
can be printed on a single line
of A4 paper.

NO

characters can be printed on
one line.

YES

characters can be printed on
one line.

Select
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.
This option allows the user to
append the required carriage
return to each line feed.

: The internal Courier

: The internal Courier font

:

Up to 78 10-pitch

:

Up to 80 10-pitch

YES

to append a

PRINT PS ERRORS=OFF OFF

ON

3-16 Printer Operation

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

EN

Configuration Menu

Items in this menu affect the printer’s behavior. Configure the printer
according to your printing needs.

Table 3-8. Configuration Menu

Item Values Explanation

POWERSAVE=
30 MINUTES

PERSONALITY=
AUTO

OFF
15 MINUTES
30 MINUTES
1 HOUR
2 HOURS
3 HOURS

AUTO
PCL
PS

Set the printer to enter PowerSave after it
has been idle for a specified amount of
time. Turning PowerSave off is not
recommended. The PowerSave feature
does the following:

1. Minimizes the amount of power
consumed by the printer when it is idle.

2. Reduces wear on the printer’s electronic
components. (Turns off the display’s
backlight.)
When you send a print job, press a Control
Panel key, open a paper tray, or open the
top cover, the printer automatically comes
out of PowerSave mode.

Note

PowerSave turns off the backlight on the
display, but the display is still readable.

Select 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 (the default is
change it to a specific printer language, the
printer will not automatically switch from
one language to another unless specific
software commands are sent to the printer.

AUTO

). If you

EN

Control Panel Menus

3-17

Table 3-8. Configuration Menu (continued)

Item Values Explanation

RESOURCE SAVE=
OFF

OFF
ON
AUTO

Dedicate printer memory to save each
language’s permanent resources. (You
might need to add memory to the printer in
order for this item to appear.) The amount
of memory set aside can be different for
each installed language. Some languages
might have memory set aside for resource
saving without requiring all languages to do
so. Any time the amount of memory
dedicated to a specific language is
changed, all languages will lose all saved
resources, including any unprocessed print
jobs.

:

OFF

No language resource saving is
performed, and language-dependent
resources, such as fonts and macros, are
lost when language or resolution changes.

:

ON

An item will appear for each installed
language that allows the user to allocate a
particular amount of memory to that
language’s resource saving area. (See the
items below.)

:

AUTO

The printer automatically determines
the amount of memory to use for each
installed language’s resource saving area.

PCL MEMORY=
400K

3-18 Printer Operation

0K

and up
(This value depends on
the amount of installed
memory.)

This item appears only when

SAVE=ON

used for saving PCL resources. Printer
default is the minimum amount of memory
needed to perform resource saving for
PCL.
Press
increments of 10 (up to 100 KB) or by
increments of 100 (above 100 KB).

. Select the amount of memory

[-Value+]

to change settings by

RESOURCE

EN

Table 3-8. Configuration Menu (continued)

Item Values Explanation

PS MEMORY=
400K

PAGE PROTECT=
AUTO

CLEARABLE
WARNINGS=JOB

0K

and up
(This value depends on
the amount of installed
memory.)

AUTO
ON

JOB
ON

This item appears only when

SAVE=ON

used for saving PS resources. Printer
default is the minimum amount of memory
needed to perform resource saving for PS.
Press
increments of 10 (up to 100 KB) or by
increments of 100 (above 100 KB).

This item appears only after a

. Select the amount of memory

[-Value+]

to change settings by

RESOURCE

21 PAGE

TOO COMPLEX, PRESS GO TO CONTINUE

message displays.
Memory Enhancement technology (MEt)
attempts to guarantee that all pages will
print. If the page does not print, turn

PROTECT

chances of a

to ON. This might increase

20 INSUFFICIENT

MEMORY, PRESS GO TO CONTINUE

message. If this occurs, simplify the print
job or install additional memory.

Set the amount of time that a clearable
warning is displayed on the printer’ s Control
Panel.

:

JOB

Warning messages display on the
Control Panel until the end of the job from
which they were generated.

:

ON

Warning messages display on the

Control Panel until

[Go]

is pressed.

PAGE

EN

Control Panel Menus

3-19

Table 3-8. Configuration Menu (continued)

Item Values Explanation

AUTO CONTINUE=
ON

TONER
LOW=CONTINUE

ON
OFF

CONTINUE
STOP

Determine how the printer reacts to errors.

:

ON

If an error occurs that prevents printing,
the message will display, and the printer will
go offline for 10 seconds before returning
online.

:

OFF

If an error occurs that prevents
printing, the message will remain on the
display and the printer will remain offline

[Go]

until
If the printer is on a network, you will
probably want to turn

ON

Determine how the printer behaves when
toner is low. The
first appear when the Toner Cartridge is
almost out of toner. (About 100 to 300
sheets can still be printed.)

CONTINUE

while the
displayed.

STOP

further action.

is pressed.

AUTO CONTINUE

.

TONER LOW

:

The printer will continue to print

TONER LOW

:

The printer will go offline and wait for

message is

message will

to

3-20 Printer Operation

EN

Table 3-8. Configuration Menu (continued)

Item Values Explanation

MOPIER
MODE=STANDARD

STANDARD
ENHANCED
OFF

Determine how the mopier functions
behave. This item appears only when there
is at least 8 MB of memory or an optional
hard disk is installed.

STANDARD

is either a hard disk installed or a RAM disk
configured in memory. This option uses I/O
data stored in printer memory for
generating multiple original prints. (All
copies will print at the same speed as the
first copy.)

ENHANCED

is a hard disk installed and at least 8 MB of
memory. This option uses engine video
data for printing multiple original prints and
should print all copies after the first at the
printer’s maximum speed.

OFF

printer will not spool any jobs to the hard
disk.)
When the mopier mode is changed, any
downloaded resources (such as fonts or
macros) will need to be downloaded again,
unless they are stored on an optional hard
disk or flash DIMM.

:

This option is available if there

:

This option is available if there

:

Disables the mopier functions. (The

RAM DISK=OFF OFF

ON
AUTO

EN

Determine how the RAM disk is configured.
This item appears only if there is no
optional hard disk installed and the printer
has at least 8 MB of memory.

:

OFF

The RAM disk is disabled.

:

ON

The RAM disk is enabled. Configure
the amount of memory to be used through
the following item:

RAM DISK SIZE

.

Note

If the setting is changed from

OFF

from
automatically reinitialize when it becomes
idle.

to

AUTO

, the printer will

Control Panel Menus

OFF

to ON or

3-21

Table 3-8. Configuration Menu (continued)

Item Values Explanation

RAM DISK
SIZE=xxxK

JAM RECOVERY=
AUTO

MAINTENANCE
MESSAGE=OFF

0K

and up
(This value depends on
the amount of installed
memory.)

AUTO
ON
OFF

OFF

Determine the size of the RAM disk. This
item appears if

[-Value+]

Press
increments of 100.

RAM DISK=ON

to change settings by

or

AUTO

.

Note

This setting cannot be changed if

DISK=AUTO

the printer to reinitialize when it becomes
idle.

Determine how the printer behaves when a
paper jam occurs.

AUTO

best mode for printer jam recovery (usually

ON

). This is the default setting.

ON

: The printer automatically reprints pages

after a paper jam is cleared.

OFF

: The printer does not reprint pages
following a paper jam. Printing performance
might be increased with this setting.

This item appears only after the

PRINTER MAINTENANCE

displays.

OFF

: The

MAINTENANCE

will not be displayed again until the next
maintenance is due.
The message should not be turned off
unless the printer maintenance has been
performed. If the required maintenance is
not performed, the printer’s performance
will degrade.

. Changing this value will cause

: The printer automatically selects the

message

PERFORM PRINTER

message will be cleared and

RAM

PERFORM

SMALL PAPER
SPEED=NORMAL

3-22 Printer Operation

NORMAL
SLOW

SLOW

Select
envelopes or small paper and standard
paper sizes.
Be sure to return the speed to
when finished.

when alternately printing

NORMAL

EN

I/O Menu

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

Table 3-9. I/O Menu

Item Values Explanation

I/O TIMEOUT=15 5

to

I/O BUFFER=AUTO AUTO

ON
OFF

300

Select the I/O timeout period in seconds. (I/O
timeout refers to the time, measured in
seconds, that the printer waits before ending a
print job.)
This setting allows you to adjust timeout for best
performance. If data from other ports appear in
the middle of your print job, increase the timeout
value.

[- Value +]

Press
increments of 1, or hold down
scroll by increments of 10.

Allocate memory for I/O buffering.

:

AUTO

The printer automatically reserves
memory for I/O buffering. Additional
configurations are not required and the

I/O BUFFER SIZE

appear.

:

ON

below). Specify the amount of memory to be
used for I/O buffering.

OFF

I/O BUFFER SIZE

The

:

I/O buffering is not performed and the

I/O BUFFER SIZE

When the I/O buffer setting is changed, any
downloaded resources (such as fonts or
macros) will need to be downloaded again,
unless they are stored on an optional hard disk
or flash DIMM.

once to change settings by

[- Value +]

menu item does not

item appears (see

item does not appear.

to

EN

Control Panel Menus

3-23

Table 3-9. I/O Menu (continued)

Item Values Explanation

I/O BUFFER SIZE=
100K

PARALLEL HIGH
SPEED=YES

PARALLEL ADV
FUNCTIONS=ON

10K

and up This item appears only when

Specify the amount of memory for I/O buffering.
The maximum amount of memory available for
I/O buffering is determined by the amount of
memory installed in the printer, the languages
installed in the printer, and by other memory
allocations that must be made.

[-Value +]

YES
NO

ON
OFF

Press
increments of 10 (up to 100 KB) or by
increments of 100 (above 100 KB).

Select the speed at which data is transmitted to
the printer.

:

YES

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

:

NO

The printer accepts slower parallel
communications used for connections with
older computers.

T urn the bidirectional parallel communication on
or off. The default is set for a bidirectional
parallel port (IEEE-1284).
This setting allows the printer to send status
readback messages to the computer. (Turning
on the parallel advanced functions might slow
language switching.)

to change settings by

I/O BUFFER=ON

.

SERIAL
PACING=DTR/DSR

3-24 Printer Operation

DTR/DSR
XON/XOFF

Select the type of pacing used. Pacing, or
“handshaking” allows the printer to tell the
computer when to send information. The printer
uses XON/XOFF and DTR/DSR signal
protocols rather than ETX/ACK protocol.

DTR/DSR

requires hardware flow control (most personal
computers do).

XON/XOFF

requires software flow control (a UNIX
workstation, for example). The

XON

:

Select this value if your computer

:

Select this value if your computer

SERIAL ROBUST

item appears (see below).

EN

Table 3-9. I/O Menu (continued)

Item Values Explanation

SERIAL ROBUST
XON=ON

SERIAL BAUD
RATE=9600

ON
OFF

300
600
1200
2400
4800
9600
19200
38400
57600
115200

This item appears only when

PACING=XON/XOFF

generating XONs.

:

ON

The printer sends an XON when the printer
is online and when sufficient buffer space is
available. If the host does not receive data
within approximately one second, the printer will
transmit additional XONs at one second
intervals until the host receives data.

:

OFF

The printer sends one XON when it can
accept more data or when it is online. The
printer does not send XONs every second while
the printer is online and ready for more data.

Select the printer’s baud rate (speed at which
information is transferred) for communicating
from the computer to the printer.

. Select the method for

SERIAL

SERIAL DTR
POLARITY=HIGH

EN

HIGH
LOW

Determine whether pin #8 is high or low when
the printer is ready.

:

HIGH

Pin #8 is held high when the printer is

ready.

:

LOW

Pin #8 is held low when the printer is
ready.

Control Panel Menus

3-25

EIO Menu (Networked Printers)

EIO (enhanced input/output) Menus depend on the particular
accessory product installed in an EIO slot of the printer. If the printer
contains an HP JetDirect print server EIO card, you can configure
basic networking parameters using the EIO Menu. These and other
parameters can also be configured through HP JetAdmin.

Table 3-10. EIO Menu

Item Values Explanation

CFG NETWORK=NO NO

YES

NOVELL=ON ON

OFF

DLC/LLC=ON ON

OFF

TCP/IP=ON ON

OFF

ETALK=ON ON

OFF

CFG NOVELL=NO NO

YES

NO

: The JetDirect Menu is not accessible.

YES

: The JetDirect Menu appears.

Select whether the IPX/SPX protocol stack
(in Novell NetW are networks, for example) is
enabled (on) or disabled (off).

Select whether the DLC/LLC protocol stack
is enabled (on) or disabled (off).

Select whether the TCP/IP protocol stack is
enabled (on) or disabled (off).

Select whether the Apple EtherTalk protocol
stack is enabled (on) or disabled (off).

NO

: The IPX/SPX Menu is not accessible.

YES

: The IPX/SPX Menu appears. In the
IPX/SPX Menu, you can specify the frame
type parameter used on your network. The

AUTO

default is
the frame type to the one detected.
For Ethernet cards, frame type selections
include

EN_SNAP

For Token Ring cards, frame type selections
include
In the IPX/SPX Menu for Token Ring cards,
you can also specify NetWare Source
Routing parameters, which include

RT=AUTO
RT

.

, to automatically set and limit

EN_8023, EN_II, EN_8022

.

TR_8022, TR_SNAP

(default),

.

OFF, SINGLE R

,

SRC

, or

ALL

3-26 Printer Operation

EN

Table 3-10. EIO Menu (continued)

Item Values Explanation

CFG TCP/IP=NO NO

YES

CFG ETALK=NO NO

YES

NO

: The TCP/IP Menu is not accessible.

YES

: The TCP/IP Menu appears. In the
TCP/IP Menu, you can specify
for TCP/IP parameters to be automatically
loaded from a bootp or DHCP server when

the printer is turned on. If you specify

BOOTP=NO

TCP/IP parameters from the Control Panel.
You can manually set each byte of the IP
address (IP), Subnet Mask (SM), Syslog
Server (LG), and Default Gateway (GW).
Also, you can manually set the Timeout time
period.

, you can manually set selected

BOOTP=YES

Note

If no IP address is assigned within the first 5
minutes, the HP JetDirect print server card
will assume a default IP address of

192.0.0.192.

NO

: The EtherTalk Menu is not accessible.

YES

: The EtherTalk Menu appears. In the
EtherTalk Menu you can set the AppleTalk
phase parameter (
for your network.

ETALK PHASE=1 or 2

)

EN

Control Panel Menus

3-27

Resets Menu

Use this menu with caution. You can lose buffered page data or
printer configuration settings when you select these items. Only reset
the printer under the following circumstances:

z You want to restore the printer’s default settings.
z Communication between the printer and computer has been

interrupted.

z You are using both the serial and parallel I/O ports, and one of the

ports is having problems.

The items in the Resets Menu will clear all memory in the printer,
while [Cancel Job] clears only the current job.

Table 3-11. Resets Menu

Item Explanation

RESET MEMORY

RESTORE FACTORY SETTINGS

RESET ACTIVE I/O CHANNEL

RESET ALL I/O CHANNELS

This item clears the printer buffer and the active
I/O input buffer, and makes the Control Panel
defaults current.

DATA RECEIVED

The
the Control Panel.
Resetting memory during a print job can result in
data loss.

This item performs a simple reset and restores
most of the factory (default) settings. This item
also clears the input buffer for the active I/O.

DATA RECEIVED

The
the printer’s Control Panel.

This item performs a simple reset and clears the
input and output buffers (f or the active I/Os only).

DATA RECEIVED

The
the printer’s Control Panel.

This item performs a simple reset and clears the
input and output buffers for all I/Os.

message might display on

message might display on

message might display on

3-28 Printer Operation

EN

Service Mode

Service Mode should be used only by authorized service personnel.
While in Service Mode, you can:

Verify and set the page count and serial number. These are

z

displayed on the Configuration Page.
Set the Cold Reset Default. (This sets the factory default paper

z

size to either Letter or A4).
Turn the Diagnostic Functions on or off (for software developers

z

only).
Clear the event log.

z

Set the interval at which the

z

message appears on the control panel.

To enter Service Mode:

PERFORM PRINTER MAINTENANCE

1. Hold down

[Select]

and

[Cancel Job]

printer. (If the control panel reads
released too soon.)

2. Press the right side of the
message
press

[Go]

SERVICE MODE

.

is displayed. To exit the Service Mode

[Menu]

while turning on the

INITIALIZING

, the keys were

key, then press

[Select]

. The

EN

Service Mode

3-29

Service Menu

Figure 3-2 Service Menu

Setting the Page Count, Maintenance Count,
and Serial Number

The page count and serial numbers are stored in Non-Volatile
Memory. If it is necessary to replace the Formatter PCA, the page
count should be set to the current value to reflect the age of the print
engine. The procedure for setting the serial number is similar to
setting the page count.

Note Before replacing the Formatter PCA, print a Configuration Page to

verify the current page count and serial number of the printer, if
possible. Use the information on the Configuration Page to reset the
page count and serial number for the new Formatter PCA.

3-30 Printer Operation

EN

Page Count

The page count stored in NVRAM and displayed on the Configuration
Page printout represents the number of pages which the printer has
printed (excluding engine test prints). If it becomes necessary to
repair a printer by installing a new Formatter, the page count must be
reset so that it represents the age of the printer’s engine rather than
the age of the Formatter.

The page count value is changed using a different method than is
used for other control panel values. Instead of increasing the entire
value by increments, each digit can be selected and modified
individually. The following control panel keys are used to modify the
page count value:

[Select]

[Value+]

[-Value]

Enters any changes to the current digit and advances the
cursor one digit to the right. If the last digit is currently
selected, pressing the
around to the first digit.

Increases the value of the currently selected digit by one.
Pressing
selected digit will change the value of the digit to 0.

Decreases the value of the currently selected digit by one.
Pressing
selected digit will change the value of the digit to 9.

[Value+]

[-Value]

[Select]

when 9 is the value of the currently

when 0 is the value of the currently

key wraps the cursor

Table 3-12 shows the sequence of keystrokes used to change the
page count from a value of 000000 to a value of 0010480.

EN

Service Mode

3-31

Table 3-12. Changing the Page Count

Key Press Display Description

SERVICE MODE

[Menu+] SERVICE MENU

[Item+] PAGES=0

[Select] PAGES=00

[Select] PAGES=000

[Value+] PAGES=001

[Select] PAGES=0010

000000 *

00000 *

0000

0000 *

000 *

[Select] PAGES=00100

[Value+]

(4 presses)

PAGES=0010400 *

[Select] PAGES=001040

*

00 *

0 *

Enter the

Advance to the first item in the

MENU

Advance the cursor one digit to the right.

Advance the cursor one digit to the right.

Increase the value of the third digit by one.

Enter the change to the third digit and
advance the cursor one digit to the right.

Advance the cursor one digit to the right.

Increase the value of the fifth digit by four.

Enter the change to the fifth digit and
advance the cursor one digit to the right.

SERVICE MENU

.

.

SERVICE

[-Value]

(2 presses)

[Select]

(2 presses)

PAGES=0010480 *

PAGES=0010480 *

[Go]

3-32 Printer Operation

Decrease the value of the sixth digit by two.

Enter the change to the sixth digit and
advance the cursor one digit to the right
causing the cursor to wrap around to the first
digit.

To exit.

EN

Maintenance Page Count

The maintenance page count should be reset only after a
maintenance kit has been installed.

This will reset the maintenance counter so that the message

PRINTER MAINTENANCE

(default).

Hold down the

z

Turn the printer on.

z

Wait for

z

release both keys.

MAINTENANCE COUNT

interval at which the next service is due for the printer. This is set
initially at the factory to 200,000 pages. (For example, the message
displays at 200,000 pages. If the Printer Maintenance Kit is installed
at 200,114 pages, the message displays 200,000 pages later, at
400,114 pages.) Editing this number is similar to editing the
item above.

RESET MAINTENANCE COUNT

will display another 200,000 pages later

[Item-]

and

[Value-]

in the Service Mode Menu sets the page count

keys.

to be displayed and then

PERFORM

PAGES

Serial Number

If a Formatter is replaced, then the serial number must be reentered.
Editing this number is similar to editing the

PAGES

item above.

Cold Reset Paper

EN

The default paper size is stored in NVRAM and when the printer is
cold reset, the default paper size is set to the f actory setting. P ossib le
values are
When replacing the Formatter in countries that use A4 rather than
letter size paper, set the cold reset paper size to A4.

COLD RESET PAPER=LETTER

and

COLD RESET PAPER=A4

.

Diagnostics

This menu item enables or disables the use of the firmware diagnostic
features. Possible values are

DIAGNOSTICS=ON

accessible when the printer is in the online
the

[Select]

. When enabled, the diagnostic features are

key.

DIAGNOSTICS=OFF*

and

state by pressing

READY

Clear Event Log

This item allows the internal event log to be cleared.

Service Mode

3-33

Testing the Printer

When you print a Configuration Page, the printer checks its internal
controller and I/O interface, and then prints a test page. You can
review the Configuration Page printout to verify proper installation of
such options as paper trays or printer languages. For more
information, see page 7-47.

Engine Test

The engine test print can be used to verify that the print engine is
functioning correctly. For more information, see page 7-11.

3-34 Printer Operation

EN

Resetting the Printer

Cold Reset

Cold Reset clears all data from the printer memory and sets all the
defaults back to the factory settings.

CAUTION

Performing a Cold Reset resets the JetDirect configuration. To avoid
making changes to your configuration, remove the JetDirect card
before performing a cold reset.

If possible, print a Configuration P age prior to performing a Cold Reset.
This will document current settings for later reference.

To perform a cold reset:

1. Turn off the printer.

2. While pressing
briefly on the display, then
seconds,
followed by

3. Press
display.

RESTORING FACTORY SETTINGS

OFFLINE

to return the printer online.

[Go]

, turn the printer on.

[Go]

INITIALIZING

. The cold reset is complete.

COLD RESET

appears. After a few

appears on the display,

appears on the

READY

appears

Clearing NVRAM

This procedure will clean up the NVRAM by removing old areas that
are not being used.

1. Turn off the printer.

2. While pressing
appears briefly on the display, followed by
few seconds

[Cancel Job]

appears.

READY

turn the printer on.

INITIALIZING

CLEANUP NVRAM

. After a

EN

Resetting the Printer

3-35

System Configuration

MS-DOS System Configuration

To communicate properly with the printer, the MS-DOS environment
requires the addition or modification of MODE commands in the
AUTOEXEC.BAT file. Add or modify the MODE command(s),
depending on the interface configuration, as follows:

Parallel DOS Commands

Most IBM and AT compatible computers default to a parallel printer
port. To ensure that information is sent to your parallel printer port,
type the following MS-DOS command at your MS-DOS prompt or
include it in your AUTOEXEC.BAT file:

MODE LPT1: , , P

For MS-DOS version 4.0 and above, enter:

MODE LPT1: , , B

Note This example assumes that you are using parallel printer port LPT1. If

you are using LPT2 or LPT3, replace LPT1 in the example with the
printer port that you are using.

Since the MODE command is an external MS-DOS command (a
program named MODE.COM is run when the MODE command is
invok ed), the program file must be contained in the root directory, or in
a directory specified in a preceding PATH command in the
AUTOEXEC.BAT file.

After changing the AUTOEXEC.BAT file, reboot the computer to
initiate the changes.

3-36 Printer Operation

EN

Serial MS-DOS Commands

Most IBM compatible computers default to a parallel printer port. To
ensure that information is sent to the serial printer port, type the
following MS-DOS commands at the MS-DOS prompt, or include
them in the AUTOEXEC.BAT file.

MODE COM1: 9600, N, 8, 1, P
MODE LPT1: =COM1

For MS-DOS version 4.0 or above, enter:

MODE COM1: 9600, N, 8, 1, B
MODE LPT1: =COM1

Note

These examples assume that you are using serial printer COM1. If you
are using COM2 or COM3, replace COM1 with the printer port that you
are using.

Since the MODE command is an external MS-DOS command (a
program named MODE.COM is run when the MODE command is
invoked), the program file must be contained either in the root
directory or in a directory specified in a preceding PATH command in
the AUTOEXEC.BAT file.

After changing the AUTOEXEC.BAT file, reboot the computer to
initiate the changes.

EN

System Configuration

3-37

Printer I/O Configuration

Parallel Menu

The default setting for the HIGH SPEED PARALLEL I/O is YES. If it is set
to NO, the interface runs at a slower speed that is compatible with
older computers. When the default is set to YES, the parallel interface
runs at a higher rate supported by newer computers.

Advanced Functions

The ADVANCED FUNCTIONS feature of the printer enables bidirectional
communications between the printer and the host. The default setting
is ON. This default setting (ON) must be active in order to use
HP LaserJet Explorer, the Windows® Printing System, and other
software applications and drivers.

Serial Configuration

Use RS-232C serial configuration when the printer is located 11 to 50
feet (3.35 to 15.24 meters) from the computer. If you need to locate
the printer between 51 and 2000 feet (15.54 and 610 meters) from the
computer, use an RS-422A serial configuration.

Serial I/O settings must be configured correctly for proper serial
communication.

Serial Protocol

When printing with a serial configuration, the same protocol must be
set on both the printer and the computer. Protocol on the printer is set
by changing the control panel settings. Protocol on the computer is
set by using DOS commands. The default protocol settings are
described below.

BAUD Rate

The BAUD RATE setting tells the printer how fast information is
transferred to and from the computer. The default setting is
BAUD RATE=9600*.

3-38 Printer Operation

EN

Pacing (Handshaking)

Pacing (or “handshaking”) is a type of communication between the
printer and the computer. This is an important setting in the printer
because it allows the printer to tell the computer when to send
information. If the printer is unable to receive information, for
example, when the print buffer is full or when the printer is out of
paper, a signal is sent to the computer to stop sending information.
When the printer is able to resume receiving information, it sends
another signal to the computer to send more data.

Pacing is set through the control panel’s I/O Menu. Two types of
handshaking are supported by the printer:

z

Select

DTR/DSR

through the I/O Menu’s

PACING

item if the
computer requires hardware flow control (most personal
computers do). Through the I/O Menu’s

DTR POLARITY

DTR polarity can be set to High or Low. The default is

POLARITY=HI

Select

z

.

XON/XOFF

through the I/O Menu’s

PACING

item, the

DTR

item if the
computer requires software flow control (for example, if you are
using a UNIX workstation). Note that status readback messages
are not paced when
Menu’s
default) or
the I/O Menu if

ROBUST XON

. Note that the

OFF

XON/XOFF

XON/XOFF

item, Robust Xon can be set to ON (the

is selected. Through the I/O

ROBUST XON

item only appears under

is selected.

EN

Printer I/O Configuration

3-39

3-40 Printer Operation

EN

4

Printer Maintenance

Overview

This chapter discusses the following:

Cleaning the Printer and Accessories



Preventative Maintenance



EN

Overview

4-1

Cleaning the Printer and Accessories

To maintain high print quality and performance, thoroughly clean the
printer and the paper handling accessories:

z Every time you change the Toner Cartridge (run a cleaning page).
z After printing approximately 10,000 pages.
z Whenever print quality problems occur.

Clean the outside surfaces with a lightly water-dampened cloth. Clean
the inside parts as indicated in Table 4-1. Observe the warning and
caution below.

WARNING! Before you begin these steps, turn the printer off and unplug all power

cords to avoid shock hazard.
Be careful when cleaning around the Fusing Assembly area. It may be

hot.

CAUTION To avoid permanent damage to the Toner Cartridge, do not use

ammonia-based cleaners on or around the printer.
Do not touch the transfer roller . Skin oils on the roller can reduce print

quality. If toner gets on your clothes, wipe it off with a dry cloth and
wash your clothes in cold water. Hot water sets toner into fabric.

Figure 4-1 Location of the Transfer Roller - Do Not Touch!

4-2 Printer Maintenance

EN

Table 4-1. Cleaning the Printer

Component Cleaning Method / Notes

Outside Covers Use a water-dampened cloth. Do not use solvents or ammonia-

based cleaners.

Inside General With a dry lint-free cloth, wipe any dust, spilled toner, and paper

particles from the paper path area, the registration roller, and the
Toner Cartridge cavity.

Paper Pickup, Feed, and
Separation Rollers

Separation Pad Use a dry, lint-free cloth.

Registration Roller Use a dry, lint-free cloth.

Transfer Roller Use a dry, lint-free cloth. DO NOT TOUCH with your fingers.

Fuser Use a water-dampened, lint-free cloth.

Use a water-dampened, lint-free cloth.

EN

Cleaning the Printer and Accessories

4-3

Using the Printer Cleaning Page

If toner specks appear on the front or back side of your print jobs,
follow the procedure below.

From the printer’s control panel, do the following:

1. Press [Menu] until PRINT QUALITY MENU appears.

2. Press [Item] until CREATE CLEANING PAGE appears.

3. Press [Select] to create the cleaning page.

4. Follow the instructions on the cleaning page to complete the
cleaning process.

Note In order for the cleaning page to work properly , print the page on copier

grade paper (not bond or rough paper).
You might need to create a cleaning page more than once. When

toner has been cleaned from inside the printer, shiny black spots will
appear on the page’s black strip.

To ensure good print quality with certain types of paper, use the
cleaning page every time the toner cartridge is replaced. If the
cleaning page is frequently needed, try a different type of paper.

Cleaning Spilled Toner

Defective Toner Cartridges can develop leaks. Also , after a paper jam
has occurred, there may be some toner remaining on the rollers and
guides inside the printer. The pages that print immediately after the
jam may pick up this toner.

Clean spilled toner with a cloth dampened with cold water. Do not
touch the Transfer Roller with the damp cloth or with your fingers. Do
not use a vacuum cleaner unless it is equipped with a micro-fine
particle filter.

4-4 Printer Maintenance

EN

Preventative Maintenance

The preventative maintenance cycle for this printer is every 200,000
pages. To order the maintenance kit see page 8-2. The kit contains
the following replacement parts: one Fuser, one Transfer Roller, one
Tray 1 Roller, three Feed Rollers, and three Separation Rollers. Refer
to the instructions included in the kit for detailed replacement
procedures.

Reset Maintenance Count

After the PM kit has been installed, reset the maintenance count.

1. Turn the printer off.

2. While pressing

[Item-]

Reset Maintenance Count appears, followed by
a few seconds

READY

and

appears.

[Value-]

turn the printer on.

INITIALIZING

Expected Life of Components

The following table shows the expected life of certain components in
the printer. To order parts, see Chapter 8.

Table 4-2. Life of Components

No. Part name Part No. Quantity Expected Life

1 Tray 1 Pickup Roller RG5-3718-000 1 100,000 pages

2 Tray Feed Roller RF5-2490-000 1 200,000 pages

3 Tray Separation Roller RF5-2490-000 1 200,000 pages

4 Tray 1 Separation Pad RB1-8873-000 1 200,000 pages

. After

5 Tray 1 Pickup Solenoid RH7-5172-000 1 200,000 pages

6 Fuser

100-127V
220-240V

EN

C4118-69003
C4118-6900411

200,000 pages
200,000 pages

Preventative Maintenance

4-5

Table 4-2. Life of Components (continued)

No. Part name Part No. Quantity Expected Life

7 Transfer Charging

Roller

8 Cooling Fan RH7-1334-000 1 25,000 hours

9 Duplexer Exhaust Fan RH7-1361-000 1 25,000 hours

RG5-4283-000 1 200,000 pages

4-6 Printer Maintenance

EN

5

Functional Information

Overview

This chapter discusses the following:

Printer Subsystems



Power Supply System



Formatter System



Image Formation System



Paper Feed System



Basic Sequence of Operation



EN

Overview

5-1

Printer Subsystems

This chapter presents a generalized functional overview of the printer
and the printing processes. The following printer systems are
discussed:

z Power Supply Subsystem
z Engine Controller Subsystem
z Formatter PCA
z Control Panel
z Interface PCA
z Image Formation System
z Paper Feed System
z Basic Sequence of Operation

5-2 Functional Information

EN

Figure 5-1

Paper Feed Subsystem

EN

Printer Subsystems

5-3

Power Supply System

AC/DC Power Distribution

AC power is supplied to the low-voltage power supply circuit in the
Engine Controller Board when the power switch (SW101) is turned
on. The low-voltage power supply circuit supplies +24 VDC and +3.3
VDC required for the printer .

+24 VDC is supplied to drive the main motor, scanner motor and fan,
and to the high-voltage power supply. +3.3 VDC is used for sensors
and ICs on the engine controller board. +24 VDC is divided into +24
VA which is normally supplied from the low-voltage power circuit, and
+24VB which is interrupted when the door switch (SW101) turns off
by opening the upper cov er.

Figure 5-2 Low Voltage Power Supply Circuit

If a short-circuit or other problems on the load side cause an
excessive current flo w from the +24VDC, or +3.3 VDC po wer supplies
or generate abnormal voltage, the excess-current protection system
and excess-voltage protection system automatically shut off the
output voltage to protect the power supplies.

If the protection systems are activated and the power supply circuit
does not output DC voltage, it is necessary to turn the printer off,
correct the problem in the faulty load, then turn the printer on again.

The circuit has two fuses, which break and cut off the output voltage if
excess-current flows through the AC line.

5-4 Functional Information

EN

Overcurrent Overvoltage Protection

The fusing heater safety circuit is located on the Engine Controller
Board, and constantly monitors the fusing temperature.

In case of abnormality, the output from this circuit turns off the relay
(RL101) and interrupts the power to the fusing heater.

If an increase in the temperature of the fusing heater causes the
thermistor output voltage to exceed about 1.2V (240° C), the output of
pin #13 of the comparator (IC301) becomes “L”.

When the output of pin #14 becomes “L” and Q302 is turned off, the
relay (RL101) is turned off.

To protect the Fuser from excessive voltages, the printer has the
following three protective functions:

The CPU monitors the voltage of TH901. If it is abnormal, the

z

CPU assesses fusing heater failure and turns off the relay
(RL101). At the same time, it reports the fusing heater failure to
the Formatter.

If the temperature of the fusing heater rises abnormally and the

z

voltage of TH901 falls below about 1.2V (240° C), the fusing
heater’s safety circuit interrupts the power to the fusing heater,
regardless of CPU outputs.

If the temperature of the fusing heater rises abnormally and the

z

temperature of the thermal fuse exceeds about 230° C, the
temperature fuse melts, which interrupts the power to the fusing
heater.

EN

Power Supply System

5-5

High Voltage Power Distribution

Figure 5-3 Engine Controller Board

In response to the instructions from the microprocessor
(CPU:IC 1501) on the Engine Controller Board, this circuit applies the
superimposed voltage of DC voltage and AC voltage to the primary
charging roller and developing cylinder, and a positive or negative DC
voltage to the transfer charging roller.

According to the image density information sent from the Formatter,
this circuit varies the primary DC bias and developing DC bias to
adjust the image density.

5-6 Functional Information

EN

Toner Cartridge Detection

The Toner Cartridge has a toner sensor. The circuit compares the
output value of the developing AC bias and the output value from the
antenna inside the cartridge, and outputs the toner detection signal.

The CPU detects the remaining toner level and the presence of the
cartridge when the developing bias is applied to the developing
cylinder. The remaining toner level is always detected when the
developing bias is applied. The presence of the cartridge is detected
only when the developing bias is applied during the initial rotation.

Engine Controller Subsystem

The following systems and functions are controlled by the Engine
Controller Board:

DC Power Distribution (+3.3V DC, +5V DC, +24VA)

z

Laser and Scanner Drive

z

Paper Motion Monitoring and Control (photosensors and flags)

z

Clutches (tray pickup and Tray 1 feed)

z

Engine Test

z

Motors (Main Drive, Scanner, and Fans)

z

The operation sequences of this printer are controlled by the CPU of
this circuit. When the power switch of the printer is tuned on and the
printer enters the standby mode, the CPU outputs the signals to drive
the loads such as laser diode, motors, and solenoids, based on the
print commands and the image data input from the external device.

EN

Power Supply System

5-7

Figure 5-4 Engine Controller Board

5-8 Functional Information

EN

Engine Controller Board Inputs and Outputs

Figure 5-5

EN

Engine Controller Board I/O (1 of 4)

Power Supply System

5-9

Figure 5-6 Engine Controller Board I/O (2 of 4)

5-10 Functional Information

EN

Figure 5-7

Engine Controller Board I/O (3 of 4)

EN

Power Supply System

5-11

Figure 5-8 Engine Controller Board I/O (4 of 4)

Laser and Scanner Drive

Based on information received from the Formatter, the Engine
Controller Board sends signals to the Laser/Scanner Assembly to
modulate the laser diode on and off and to drive the Laser/Scanner
motor. See “Image Formation System” on page 5-22 for more
information.

5-12 Functional Information

EN