HP C2037A, C2001A, C3917A, C3952A, C2039A User Manual

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Combined Service Manual

HP LaserJet 4 / 4M (C2001A / C2021A)

HP LaserJet 4 Plus / 4M Plus (C2037A / C2039A)

HP LaserJet 5 / 5M /5N (C3916A/C3917A/ C3952A)

Publication number C3916-90984

First edition, March 1996

Printed in USA

Warranty

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

Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose.

Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damaged in connection with the furnishing, performance, or use of this material.

WARNING

Electrical Shock Hazard

To avoid electrical shock, use only supplied power cords and connect only to properly grounded (3-hole) wall outlets.

Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714

Conventions

This manual uses the following conventions:

Unless specifically stated otherwise, information applies to all seven printer models (LaserJet 4/4 Plus/4 M/4 M Plus/5/5 M/5 N). Most procedures are combined for all printers, except where they differ substantially.

Color is used to emphasize items which are important to the material under discussion.

The names of major printer parts and assemblies are Capitalized.

Bold is used for emphasis, particularly in situations where italic type would be confusing.

Italic type is used to indicate related documents or emphasis.

COMPUTER type indicates text as seen on a computer monitor.

DISPLAY type indicates text as seen on the printer’s 16 character LCD display panel (LaserJet 4Plus/4MPlus only).

[KEYFACE] indicates keys on a computer keyboard or on the

printer’s control panel. Examples include [Enter], [On Line] and

Go.

Note

CAUTION

WARNING!

Notes contain important information set off from the text.

Caution messages alert you to the possibility of damage to equipment or loss of data.

Warning messages alert you to the possibility of personal injury.

Contents

1 Product Information

Product Family Information . . . . . . . . . . . . . . . 1-2

Identification . . . . . . . . . . . . . . . . . . . . . . . 1-3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . 1-5

HP LaserJet 4 and 4 Plus . . . . . . . . . . . . . . . . 1-5

Related Documentation . . . . . . . . . . . . . . . . . . 1-7

Safety Information . . . . . . . . . . . . . . . . . . . . . . 1-8

Product and Laser Safety . . . . . . . . . . . . . . . . 1-8

FCC RFI Statement . . . . . . . . . . . . . . . . . . . 1-9

Laser Statement (Sweden/Finland) . . . . . . . . . . 1-10

Toner Safety . . . . . . . . . . . . . . . . . . . . . 1-11

Ozone Statement . . . . . . . . . . . . . . . . . . . . 1-11

Doing Business with HP . . . . . . . . . . . . . . . . . . 1-12

Technical Assistance . . . . . . . . . . . . . . . . . 1-12

HP ASAP 1-800-333-1917 (U.S.) . . . . . . . . . . . . 1-12

HP FIRST . . . . . . . . . . . . . . . . . . . . . . . . 1-12

HP FIRST, U.S. . . . . . . . . . . . . . . . . . . . . . 1-12

HP FIRST, Europe . . . . . . . . . . . . . . . . . . . 1-12

HP AUDIO-TIPS . . . . . . . . . . . . . . . . . . . . 1-13

HP CompuServe Forum . . . . . . . . . . . . . . . . 1-13

Customer Information Centers . . . . . . . . . . . . . 1-13

Customer Support Center (Assist Line) . . . . . . . . 1-13

Printer Drivers . . . . . . . . . . . . . . . . . . . . . 1-13

European Customer Support Center . . . . . . . . . 1-14

Other Areas . . . . . . . . . . . . . . . . . . . . . . . 1-14

2 Site Planning and Requirements

Site Requirements . . . . . . . . . . . . . . . . . . . . . . 2-1

Printer Space Requirements . . . . . . . . . . . . . . . 2-2

Print Media Specifications . . . . . . . . . . . . . . . . 2-3

Adhesive Labels . . . . . . . . . . . . . . . . . . . . . 2-5

Label Construction . . . . . . . . . . . . . . . . . . . . 2-5

Overhead Transparencies . . . . . . . . . . . . . . . . 2-6

Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Envelope Construction . . . . . . . . . . . . . . . . . . 2-7

3 Configuration

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Using The Control Panel . . . . . . . . . . . . . . . . . . 3-2

Contents-1

Control Panel Keys . . . . . . . . . . . . . . . . . . . 3-2

Reset Menu . . . . . . . . . . . . . . . . . . . . . . . 3-5

Control Panel Menus . . . . . . . . . . . . . . . . . . . 3-6

Printer Features . . . . . . . . . . . . . . . . . . . . . . 3-13

Page Protection (HP LaserJet 4 only) . . . . . . . . . 3-13

Resource Saving (HP LaserJet 4 Plus and 5 only) . . 3-14

I/O Buffering (HP LaserJet 4 Plus and 5 only) . . . . 3-15

EconoMode (HP LaserJet 4 Plus and 5 only) . . . . . 3-16

Resolution Enhancement (REt) . . . . . . . . . . . . 3-16

Memory Enhancement technology (MEt)

(HP LaserJet 4 Plus and 5 only) . . . . . . . . . . 3-17

Density . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Network Security . . . . . . . . . . . . . . . . . . . . . 3-18

Remote Control Panel (DOS) . . . . . . . . . . . . . 3-18

HP LaserJet Utility (Macintosh) . . . . . . . . . . . 3-18

HP JetAdmin Utility (Novell Networks) . . . . . . . 3-19

Service Mode . . . . . . . . . . . . . . . . . . . . . . . 3-20

Setting the Page Count . . . . . . . . . . . . . . . . 3-21

Setting the Cold Reset Default . . . . . . . . . . . 3-22

Cold Reset . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Understanding the PCL Self Test Printout . . . . . . 3-24

Changing the Control Panel Display Language . . . . 3-28

Test Print Button . . . . . . . . . . . . . . . . . . . . 3-29

System Configuration . . . . . . . . . . . . . . . . . 3-31

MS-DOS System Configuration . . . . . . . . . . . . 3-31

Parallel DOS Commands . . . . . . . . . . . . . . . 3-31

Serial MS-DOS Commands . . . . . . . . . . . . . . 3-32

Printer I/O Configuration . . . . . . . . . . . . . . . . . 3-33

Parallel Menu . . . . . . . . . . . . . . . . . . . . . 3-33

Advanced Functions . . . . . . . . . . . . . . . . . 3-33

Serial Configuration . . . . . . . . . . . . . . . . . . 3-33

Serial Protocol . . . . . . . . . . . . . . . . . . . . . 3-33

BAUD Rate . . . . . . . . . . . . . . . . . . . . . . . 3-33

Pacing (Handshaking) . . . . . . . . . . . . . . . 3-34

Serial Cable Pin-outs . . . . . . . . . . . . . . . . . . . 3-35

DB-9 RS-232 Serial Connection — HP LaserJet 4 . . 3-35

DB-25 RS-232 Serial Connection — HP LaserJet 4

Plus/5 . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

DB-25 Serial Connection — HP LaserJet 4 . . . . . 3-37

DB-25 RS-232 Serial Connection — HP LaserJet 4

Plus/5 . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

RS-422A Serial Connection (Not available on the

HP LaserJet 4 Plus or 5 printers) . . . . . . . . . 3-39

RS-422A Serial Configuration (LaserJet 4 only) . . . 3-39

Modular I/O Configuration . . . . . . . . . . . . . . . . 3-40

Contents-2

Printer Drivers . . . . . . . . . . . . . . . . . . . . . . . 3-41

Install Printer Drivers and Utilities . . . . . . . . . 3-41

How to Obtain Printer Drivers . . . . . . . . . . . . . 3-41

DOS Utilities . . . . . . . . . . . . . . . . . . . . . . . . 3-42

Packing the Printer . . . . . . . . . . . . . . . . . . . 3-43

Repackaging Instructions . . . . . . . . . . . . . . 3-43

Packing Checklist . . . . . . . . . . . . . . . . . . . . 3-43

Installing The Optional Lower Cassette . . . . . . . . 3-44

Loading Paper into the Optional Lower Cassette . . 3-45

Envelope Feeder Installation . . . . . . . . . . . . . . . 3-49

LaserJet 4 and 4 Plus . . . . . . . . . . . . . . . . . . 3-50

LaserJet 5 . . . . . . . . . . . . . . . . . . . . . . . . 3-50

SIMM Installation . . . . . . . . . . . . . . . . . . . . . 3-51

Protecting the SIMM Board . . . . . . . . . . . . . . 3-51

Memory Requirements . . . . . . . . . . . . . . . . . 3-53

Accessing the SIMM Slots . . . . . . . . . . . . . . . 3-55

Installing the SIMM Boards . . . . . . . . . . . . . . 3-55

Testing a SIMM Board . . . . . . . . . . . . . . . . . . 3-57

Memory SIMM . . . . . . . . . . . . . . . . . . . . . 3-57

Running a Self Test Printout . . . . . . . . . . . . . . 3-57

Personality SIMM

(PostScript) . . . . . . . . . . . . . . . . . . . . . . 3-58

Troubleshooting a SIMM Board . . . . . . . . . . . . . . 3-59

Service / Error Messages . . . . . . . . . . . . . . . . 3-59

4 Preventive Maintenance

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Life Expectancy of Consumables . . . . . . . . . . . . . . 4-2

Service Checkpoints . . . . . . . . . . . . . . . . . . . . . 4-3

Cleaning Your Printer . . . . . . . . . . . . . . . . . . 4-4

Toner Cartridge . . . . . . . . . . . . . . . . . . . . . . 4-5

Saving Toner with EconoMode (HP LaserJet 4

Plus and 5 Only) . . . . . . . . . . . . . . . . . . . . 4-6

Storing the Toner Cartridge . . . . . . . . . . . . . . . 4-6

Installing the Toner Cartridge . . . . . . . . . . . . . 4-7

Non-HP Toner Cartridges . . . . . . . . . . . . . . . . 4-9

Clearing the TONER LOW Message . . . . . . . . . 4-10

Periodic Maintenance Procedures . . . . . . . . . . . . 4-11

Removing the MP Tray (Tray 1) Pickup Roller and

Separation Pad . . . . . . . . . . . . . . . . . . . 4-11

Removing the PC (Tray 2) Pickup Roller . . . . . . 4-13

Removing the Lower Cassette (LC) or (Tray 3)

Pickup Roller . . . . . . . . . . . . . . . . . . . . 4-14

Removing and Replacing the Transfer Roller . . . . 4-15

Contents-3

Removing the Transfer Roller . . . . . . . . . . . . 4-16

Replacing the Transfer Roller . . . . . . . . . . . . 4-16

5 Functional Overview

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

DC Controller System . . . . . . . . . . . . . . . . . . 5-2

DC Controller Loads . . . . . . . . . . . . . . . . . . . 5-3

Serial Data Communication . . . . . . . . . . . . . . . 5-4

Solenoids . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Photosensors . . . . . . . . . . . . . . . . . . . . . . . 5-6

Microswitches . . . . . . . . . . . . . . . . . . . . . . 5-8

PC (Tray 2) and LC (Tray 3) Tray Size Sensing

System . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Motors . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Paper Jam Detection . . . . . . . . . . . . . . . . . 5-11

Formatter System . . . . . . . . . . . . . . . . . . . . 5-12

I/O Control . . . . . . . . . . . . . . . . . . . . . . . 5-12

Memory Management . . . . . . . . . . . . . . . . . 5-14

Data Processing . . . . . . . . . . . . . . . . . . . . 5-14

PJL Overview . . . . . . . . . . . . . . . . . . . . . 5-15

Image Formation System . . . . . . . . . . . . . . . . . 5-16

Photosensitive Drum . . . . . . . . . . . . . . . . . 5-17

Drum Sensitivity . . . . . . . . . . . . . . . . . . . 5-17

Cleaning Stage . . . . . . . . . . . . . . . . . . . . 5-18

Conditioning Stage . . . . . . . . . . . . . . . . . . 5-19

Writing Stage . . . . . . . . . . . . . . . . . . . . . 5-20

Developing Stage . . . . . . . . . . . . . . . . . . . 5-22

Transferring Stage . . . . . . . . . . . . . . . . . . 5-24

Fusing Stage . . . . . . . . . . . . . . . . . . . . . 5-25

Paper Feed System . . . . . . . . . . . . . . . . . . . 5-26

Printing from the MP Tray (Tray 1) . . . . . . . . . 5-29

Printing from the PC Tray (Tray 2) . . . . . . . . . 5-30

Power System . . . . . . . . . . . . . . . . . . . . . . . 5-31

Basic Sequence of Operation . . . . . . . . . . . . . . 5-33

Standard Printer Operation . . . . . . . . . . . . . 5-33

Timing Diagrams . . . . . . . . . . . . . . . . . . . 5-34

Warmup Period . . . . . . . . . . . . . . . . . . . . 5-37

Standby Period . . . . . . . . . . . . . . . . . . . . 5-37

PowerSave . . . . . . . . . . . . . . . . . . . . . . . 5-37

Initial Rotation Period . . . . . . . . . . . . . . . . 5-38

Print Period . . . . . . . . . . . . . . . . . . . . . . 5-40

Last Rotation Period . . . . . . . . . . . . . . . . . . . 5-42

Contents-4

6 Removal and Replacement

Required Tools . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Hardware Review . . . . . . . . . . . . . . . . . . . . . . 6-2

Removing the Covers . . . . . . . . . . . . . . . . . . . . 6-4

Right Side Cover Removal . . . . . . . . . . . . . . . . 6-4

Top Cover Removal . . . . . . . . . . . . . . . . . . . 6-5

Left Side Cover Removal . . . . . . . . . . . . . . . . . 6-7

Rear Door Removal . . . . . . . . . . . . . . . . . . . . 6-8

Font Door Cover Removal (LJ 5 Right Front

Cover Removal) . . . . . . . . . . . . . . . . . . . 6-10

Multi-Purpose (MP) Tray (Tray 1) Door Removal . . . 6-12

Multi-Purpose (MP) Tray (Tray 1) Removal . . . . . . 6-13

Assemblies Removal . . . . . . . . . . . . . . . . . . . . 6-15

Power Supply Removal . . . . . . . . . . . . . . . . . 6-15

Paper Feed Assembly Removal . . . . . . . . . . . . . 6-18

High Voltage Power Supply (HVPS) Removal . . . . . 6-21

Fuser Assembly Removal . . . . . . . . . . . . . . . . 6-22

Control Panel and Overlay Removal . . . . . . . . . . 6-23

Removing the SIMMs Door . . . . . . . . . . . . . . 6-25

Formatter Cage Removal . . . . . . . . . . . . . . . . 6-27

Formatter PCA Removal . . . . . . . . . . . . . . . . 6-29

DC Controller Removal . . . . . . . . . . . . . . . . . 6-33

DC Controller Installation . . . . . . . . . . . . . . . 6-35

Main Motor Assembly Removal . . . . . . . . . . . . 6-37

Gear Assembly Removal . . . . . . . . . . . . . . . . 6-38

Fan Removal . . . . . . . . . . . . . . . . . . . . . . 6-39

Output Assembly Removal . . . . . . . . . . . . . . . 6-41

Paper Exit Sensor (PS3) Removal . . . . . . . . . . . 6-42

Scanner Assembly Removal . . . . . . . . . . . . . . 6-43

Lower Cassette Assemblies . . . . . . . . . . . . . . . . 6-44

Lower Cassette Sensor PCA Removal . . . . . . . . . 6-44

Lower Cassette Pickup Motor Removal . . . . . . . . 6-45

Replacing Fuser Assembly Parts . . . . . . . . . . 6-47

Fuser Assembly Configuration . . . . . . . . . . . . 6-48

Removing the Fuser Roller Heat Lamp . . . . . . . . 6-49

Fuser Assembly Thermoswitch Removal . . . . . . . 6-55

Thermistor Removal . . . . . . . . . . . . . . . . . . 6-56

Paper Control PCA Removal . . . . . . . . . . . . . . 6-59

Sensor PCA Removal . . . . . . . . . . . . . . . . . . 6-60

PS1 and PS2 Sensor Assembly Removal . . . . . . . 6-61

High Voltage Contact Plate (HVCP) and Paper Guide

Removal . . . . . . . . . . . . . . . . . . . . . . . . 6-62

Accessing the High Voltage Contact Plate and

Feed Guide Assembly . . . . . . . . . . . . . . . . 6-62

Contents-5

Removing the High Voltage Contact Assembly and

Feed Guide Assembly . . . . . . . . . . . . . . . . 6-67

Replacing the High Voltage Contact

Assembly/Feed Guide Assembly . . . . . . . . . . 6-68

Interconnect PCA Removal . . . . . . . . . . . . . . . 6-69

7 Troubleshooting

LaserJet 5 Error Map . . . . . . . . . . . . . . . . . . . . 7-A

Pre-Troubleshooting Procedures . . . . . . . . . . . . . 7-1

Preliminary Operating Checks . . . . . . . . . . . . . 7-1

Printer Message Troubleshooting . . . . . . . . . . . 7-2

Printer Message Summary Table . . . . . . . . . . . 7-2

Clearable Warnings . . . . . . . . . . . . . . . . . 7-10

Printer Message Troubleshooting Procedures . . . . . . 7-12

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

MP/PC/LC (Tray 1/2/3) LOAD Message . . . . . . 7-13

Cassette Size Switches (SW603, SW604, SW605)

Functional Check . . . . . . . . . . . . . . . . . . 7-15

Paper Size Sensing Lower Cassette . . . . . . . . . 7-16

PC Empty Sensor (PS2) Functional Check . . . . . . 7-17

PS4 Check (MP Tray Empty Sensor) . . . . . . . . . 7-17

12 Printer Open Message . . . . . . . . . . . . . . . 7-18

SW601 Functional Check . . . . . . . . . . . . . . . 7-19

13 PAPER JAM Message . . . . . . . . . . . . . . . 7-20

PS1 (Input/Registration Sensor) Check . . . . . . . . 7-22

PS3 (Exit Sensor) Check . . . . . . . . . . . . . . . . 7-23

Pickup Motor Functional Test (M2) . . . . . . . . . . 7-23

Lower Cassette Functional Check . . . . . . . . . . 7-24

14 NO EP CART Message . . . . . . . . . . . . . . . 7-25

16 Toner Low Message . . . . . . . . . . . . . . . . 7-25

41.X ERROR Message . . . . . . . . . . . . . . . . 7-27

50 SERVICE Error - Fuser Malfunction . . . . . . . 7-29

51 ERROR Message . . . . . . . . . . . . . . . . . . 7-31

52 ERROR Scanner Malfunction . . . . . . . . . . . 7-32

Laser/Scanner Assembly Functional Checks . . . . . 7-32

57 (or 57.1) SERVICE Message (Main Motor

Failure) . . . . . . . . . . . . . . . . . . . . . . . 7-33

Main Motor Functional Checks . . . . . . . . . . . . 7-33

58 (or 57.2) SERVICE (Fan Failure) . . . . . . . . . 7-34

Image Defect Summary . . . . . . . . . . . . . . . . . 7-35

PS5 Check (MP Tray Paper End Sensor)

Functional Test . . . . . . . . . . . . . . . . . . . 7-44

Image Formation Troubleshooting . . . . . . . . . . . . 7-49

Half Self-Test Functional Check . . . . . . . . . . . 7-49

Contents-6

Drum Rotation Functional Check . . . . . . . . . . . 7-50

High Voltage Power Supply Assembly . . . . . . . . 7-51

Interface Troubleshooting . . . . . . . . . . . . . . . . . 7-52

Communications Check . . . . . . . . . . . . . . . . 7-52

Test Message . . . . . . . . . . . . . . . . . . . . . . 7-52

AUTOEXEC.BAT Standard Configurations . . . . . 7-53

Parallel DOS Commands . . . . . . . . . . . . . . . 7-53

Serial MS-DOS Commands . . . . . . . . . . . . . . 7-53

Communications Checks . . . . . . . . . . . . . . . . 7-54

MIO Troubleshooting . . . . . . . . . . . . . . . . . . . 7-56

Troubleshooting Hints . . . . . . . . . . . . . . . . . 7-56

Explanation of Self Test Printout . . . . . . . . . . . 7-57

Troubleshooting Aids . . . . . . . . . . . . . . . . . . . 7-59

Component Locations . . . . . . . . . . . . . . . . . . 7-59

Repetitive Defect Template . . . . . . . . . . . . . . 7-67

Voltage Test Points . . . . . . . . . . . . . . . . . . 7-69

Measuring the DC Voltage Levels . . . . . . . . . . . 7-69

8 Parts and Diagrams

How To Use the Parts Lists . . . . . . . . . . . . . . . . . 8-1

Parts Lists and Illustrations . . . . . . . . . . . . . . . 8-2

Accessory Parts . . . . . . . . . . . . . . . . . . . . . . 8-33

SIMM Memory . . . . . . . . . . . . . . . . . . . . . 8-38

Miscellaneous Parts and Accessories . . . . . . . . . 8-39

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . 8-40

A Duplexer

Functional Overview . . . . . . . . . . . . . . . . . . A-2

Duplex Printing . . . . . . . . . . . . . . . . . . . . . A-3

Switchback Assembly . . . . . . . . . . . . . . . . . . A-3

Holding Tray . . . . . . . . . . . . . . . . . . . . . . A-3

Electrical Overview . . . . . . . . . . . . . . . . . . . A-5

Installing the Optional Duplexer . . . . . . . . . . . . . A-6

Removal and Replacement . . . . . . . . . . . . . . . . A-8

Required Tools . . . . . . . . . . . . . . . . . . . . . A-8

Removing the Covers . . . . . . . . . . . . . . . . . . A-9

Removing the Switchback Covers . . . . . . . . . . . A-9

Removing the Side Cover on Power Side . . . . . . . A-10

Removing the Side Cover on Gear Side . . . . . . . . A-11

Removing the Back Cover . . . . . . . . . . . . . . . A-13

Removing the Front Cover . . . . . . . . . . . . . . . A-13

Removing Internal Duplexer Components . . . . . . . A-14

Removing the Fan/Motor/Solenoid/Sensor . . . . . . . A-14

Removing the Switchback Paper Guide . . . . . . . . A-15

Contents-7

Removing the Paper Guide Assembly . . . . . . . . . A-16

Removing the Paper Roller . . . . . . . . . . . . . . A-17

Removing the Control PCA . . . . . . . . . . . . . . A-20

Removing the Power PCA . . . . . . . . . . . . . . . A-22

Removing the Holding Tray Center Paper Guide . . . A-23

Removing the Holding Tray Belt . . . . . . . . . . . A-24

Removing the Holding Tray Paper Sensor . . . . . . A-26

Removing the Switchback Assembly . . . . . . . . . A-27

Parts and Diagrams for the Duplexer . . . . . . . . . . A-28

B LaserJet 5/5M/5N Printer

Product Information . . . . . . . . . . . . . . . . . . . . . B-2

Product Family Information . . . . . . . . . . . . . . . B-3

Identification . . . . . . . . . . . . . . . . . . . . . . . . B-5

Specifications . . . . . . . . . . . . . . . . . . . . . . . . B-6

HP LaserJet 5 / 5M / 5N . . . . . . . . . . . . . . . . . B-6

Related Documentation . . . . . . . . . . . . . . . . . . B-8

Laser Statement (Sweden/Finland) . . . . . . . . . . B-9

Control Panel Layout . . . . . . . . . . . . . . . . . . . B-10

Control Panel Keys . . . . . . . . . . . . . . . . . . . B-10

Control Panel Menus . . . . . . . . . . . . . . . . . . B-13

To change a control panel setting: . . . . . . . . . . . B-13

Printing Menu . . . . . . . . . . . . . . . . . . . . . B-15

PCL Fonts Menu . . . . . . . . . . . . . . . . . . . . B-17

PostScript Menu . . . . . . . . . . . . . . . . . . . . B-18

Job Menu . . . . . . . . . . . . . . . . . . . . . . . . B-18

Configuration Menu . . . . . . . . . . . . . . . . . . B-19

Memory Configuration Menu . . . . . . . . . . . . . B-21

Parallel Menu . . . . . . . . . . . . . . . . . . . . . B-22

Serial Menu . . . . . . . . . . . . . . . . . . . . . . . B-22

Resets Menu . . . . . . . . . . . . . . . . . . . . . . B-23

Test Menu . . . . . . . . . . . . . . . . . . . . . . . B-24

Service Mode . . . . . . . . . . . . . . . . . . . . . . . B-25

Setting the Page Count . . . . . . . . . . . . . . . . B-26

Setting the Cold Reset Default . . . . . . . . . . . . B-27

Skip Demo . . . . . . . . . . . . . . . . . . . . . . . B-28

Big Data . . . . . . . . . . . . . . . . . . . . . . . . B-28

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . B-28

Programming a Flash SIMM . . . . . . . . . . . . . . . B-29

Changing the Control Panel Display Language . . . B-30

NVRAM Init . . . . . . . . . . . . . . . . . . . . . . . . B-31

Understanding the PCL Self Test Printout . . . . . . . B-32

Infrared Communication . . . . . . . . . . . . . . . . . B-34

System Requirements . . . . . . . . . . . . . . . . . B-35

Contents-8

To Print Using the Infrared Port . . . . . . . . . . . . B-36

Troubleshooting IR Printing Problems . . . . . . . . B-38

Infrared Port Not Responding . . . . . . . . . . . . . B-41

Contents-9

Contents-10

Product Information

Table 1-1 Printer Features

Features HP LJ 4 HP LJ 4M HP LJ 4 Plus HP LJ4M Plus

Model C2001A C2021A C2037A C2039A Printer Speed 8 ppm 8 ppm 12 ppm 12 ppm Resolution 300/600 dpi 300/600 dpi 300/600 dpi 300/600 dpi Expandable I/O Buffer No No Yes Yes Resource Savings No No Yes Yes MEt No No Yes Yes REt Yes Yes Yes Yes Languages Enhanced PCL5 Enhanced PCL5,

PostScript Upgradeable C2080A* N/ A C3129A* N/A Resident Memory 2 MByte 6 MByte 2 MByte 6 MByte Printer Max. Memory Capacity 34 MByte 26 MByte 66 MByte 50 MByte Available Memory Slots Four Two** Four Two ** PC Tray Capacity 250 Sheets 250 Sheets 250 Sheets 250 Sheets MP Tray Capacity 100 Sheets 100 Sheets 100 Sheets 100 Sheets Output Capacity 250 Sheets 250 Sheets 250 Sheets 250 Sheets 500 Sheet Optional Feeder C2083A C2083A C2083D C2083D Duplex Option N/A N/A C3157A C3157A Envelope Feeder C2082A C2082A C2082B C2082B Typefaces 45 PCL 45 PCL

Interfaces Serial (25 pin)

MIO Slots Yes Yes (J2341A) Yes Yes (J2552A) EconoMode No No Yes Yes Cartridge Slot Yes Yes Yes Yes Power Sav e No No Yes Yes Monthly Usage (pages) Up to 20,000 Up to 20,000 Up to 20,000 Up to 20,000

Parallel

Postscript Level 2

35 Postscript Serial (25 pin)

Parallel, Local

Talk

Enhanced PCL5 Enhanced PCL5,

45 PCL 45 PCL

Serial (9 pin)

Parallel

Postscript Level 2

35 Postscript

Serial (9 pin)

Parallel

Local Talk

*The PostScript upgrade requires an additional 4 MB SIMM. **PostScript & Memory SIMM already occupy 2 slots.

Product Information 1-1

Product Family Information

The model HP C2021A is identical to the model HP C2001A from a hardware standpoint, as is the model HP C2039A to the model HP C2037A. The models HP C2021A and C2039A printers include the following features:

• PostScript Level 2 SIMM

• AppleTalk MIO Card

• 4 MBytes of RAM

In every instance the repair procedures for all products are similar.

Some LaserJet 4 accessories are compatible with the LaserJet 4 Plus and some are not. The compatibility chart below may be used when there is a question of accessory compatibility.

Table 1-2 Product Family Compatibility Matrix

Accessory Description Does it work in the

C2082A Envelope Feeder Yes No C2082B Envelope Feeder Yes Yes

C2083A Optional 500 Sheet Feeder

C2083D Optional 500 Sheet Feeder

C2085A 250 Sheet Universal PC

C2085D 250 Sheet Universal PC

C3129A PostScript SIMM No Yes

C2080A PostScript SIMM Yes No

C2063A Memory (1 MByte) Yes Yes C2064A Memory (2 MByte) Yes Yes C2065A Memory (4 MByte) Yes Yes

C2066A Memory (8 MByte) Yes Yes C3130A * Memory (1 MByte) No Yes C3131A * Memory (2 MByte) No Yes

C3132A* Memory (4 MByte) No Yes C3133A* Memory (8 MByte) No Yes

C3146A * Memory (16 MByte) No Yes

C3157A Duplex Assembly No Yes

92298A Toner Cartridge Yes Yes

*If HP LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is installed in the HP LaserJet 4, the printer will display a “53.1X.08 ERR O R” (X indicates the position of the SIMMs slot).

Assembly

tray

HPLaserJet 4?

Yes No

Yes Yes

Yes No

No Yes

Does it work in the

HPLaserJet 4 Plus?

1-2 Product Information

Identification

The model number is on a label placed on the outside, rear cover of the printer. The model number (C2001A, C2021A, C2037A or C2039A) is found at the top of the label. The model number is the base number for all printers.

The serial number contains information about the printer Country of Origin. The serial number Alpha section refers to the Country of Origin, the Revision Level and the Production Code. The Numeric section refers to the production number of the printer. See the following for information about the production codes.

A typical serial number would consist of: CC R P XXXXXX

Code Meaning

CC Country of Origin R Revision Number - Alphanumeric, no vowels P Production Code - Alphanumeric, no vowels XXX-XXXX Numeric serial number - Numeric, no alphas

C2037A

POWER R ATING:

100-120V 50-60 Hz, 7.8A

MANUFACTURED:

Made in Japan

XXX-XXXX

FCC ID: B94C2037A

Figure 1-1 Printer Identification Label for the

HP LaserJet 4 Plus/4M Plus

C2037A

Product Information 1-3

24131

TR1

Figure 1-2 Printer Identification Label for the HP LaserJet

4/4M

1-4 Product Information

Specifications

HP LaserJet 4 and 4 Plus

Table 1-3 Printer Dimensions

Dimension HP LaserJet 4/4M

(C2001A/C2021A)

Width 16.4 in (416 mm) 16.4 in (416 mm) Depth 15.9 in (403 mm) 15.9 in (403 mm) Height 11.7 in (297 mm) 11.7 in (297 mm) Weight (with toner cartridge) 37 lbs. (18.3 kg) 37 lbs. (18.3 kg)

HP LaserJet 4 Plus

HP LaserJet 4M Plus

(C2037A/C2039A)

Table 1-4 Power Specifications

Watts (typical)

Volts Freq 4/4M 4 Plus/4M Plus

100 Vac ± 10% 120 Vac ± 10%

220 Vac ± 10% 240Vac ± 10%

50/60 Hz ± 2 Hz 50/60 Hz ± 2 Hz

printing = 195 standby = 55

printing = 300 standby = 80 PowerSave=25

printing =300 standby = 80 PowerSave=25

Product Information 1-5

Table 1-6 Electrical Specifications

Status 100/115 V

4/4M 4 Plus/4M

Plus

Product Rating 6.4 amps 7.8 amps 3.1 amps 4.0 amps Peak Inrush Current 22 amps 22 amps 22 amps 22 amps 25% Decay Time 13 msec 18 msec 11 msec 11 msec Peak Fuser Current 38 amps 51 amps 17 amps 22 amps Return-to Average Time 200 msec 200 msec 200 msec 200 msec

220/240 V

4/4M 4 Plus/4M

Plus

Table 1-5 Environmental Specifications

Operating Environment Temperature: 10° C to 32.5° C (50° F to 90.5° F)

Storage E nvironment (not including toner cartridge)

Humidity: 20-80% (no condensation) Temperature: -20° to 60° C (-4° to 140°F)

Humidity: 15-90% (no condensation)

1-6 Product Information

Related Documentation

The following manuals can be ordered from Hewlett-Packard’s Support Materials Organization (SMO). The phone number for SMO is (800) 227-8164.

Table 1-7

HP LaserJet 4 Documents—Description Part Number

Your Guide to Setting Up the HP LaserJet 4 Printer

HP LaserJet 4 User’s Manual C2001-90912 HP PCL5 Printer Language Technical

Reference Package HPJet Direct Network Installation Guide J2552-90011 HPJet Direct Network Software Configuration

Guide

HP LaserJet 4 Plus and 4M Plus User’s Manual HP LaserJet 4 Plus Getting Started Guide C2037-90917 HP LaserJet 4M Plus Getting Started Guide C2039-90901

Printer Documentation

C2001-90901

5010-3994

J2552-90001

HP LaserJet 4 Plus

Documents—Description Part Number

C2037-90901

Product Information 1-7

Safety Information

Product and Laser Safety

HP printers are UL 1950 listed, CSA 22.2 950 certified, and manufactured in accordance with DIN IEC 950. The printers are certified as “Class 1” laser products 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. The printers do not produce hazardous laser radiation.

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.

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products on August 2, 1976. These regulations apply to laser products manufactured from August 1, 1976. Compliance is mandatory for products marketed in the United States.

Note

Since the laser beam is invisible, the label on the following page is attached to the Laser Scanner Cover inside the printer where there is danger of exposure to laser radiation.

Caution

1-8 Product Information

In accordance with West German standard VDE0836 (VDE-Bestimmung fur die Elektrische Sicherheit von Lasergeraten und Anlagen), two servicemen are required to service each unit.

Never service or operate the printer with the protective cover removed from the laser scanner assembly. The reflected beam, although invisible, can damage your eyes.

FCC RFI Statement

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 when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving attenna.

• Increase the separation between the equipment and the

receiver.

• Connect the equipment into an outlet on a circuit different

from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for

help.

Any changes or modifications not expressly approved by Hewlett-Packard could void the user’s authority to operate this equipment.

Note

This product also meets the FCC Class A emission standards.

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

Product Information 1-9

Laser Statement (Sweden/Finland)

LASERTURVALLISUUS

LUOKAN 1 LASERLAITE

KLASS 1 LASER APPARAT

HP LaserJet(s) 4/4M, 4 Plus/4M Plus laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle.

Kirjoittimen on hyväksynyt Suomessa laserturvallisuuden osalta Sähkötarkastuskeskus. Laitteen turvallisuusluokka on määritetty valtioneuvoston päätöksen N:o 472/1985 ja standardin EN 60825 (1991) mukaisesti.

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

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

HUOLTO HP LaserJet (s) 4/4M, 4 Plus/4M Plus-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

1-10 Product Information

Toner Safety

Note

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

Mail. To obtain a MSDS for the 92298A LaserJet Toner Imaging System through the mail, call the Customer Information Center (CIC) at 1-800-752-0900 between 6 A.M. and 5 P.M. Pacific Standard Time. Fax. To obtain a MSDS for the 92298A LaserJet Toner Imaging System by fax, call the HP FIRST number at (800) 333-1917 (U.S. and Canada) and enter document number 1512.

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.

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

Ozone Statement

These printers do not use high voltage corona wires in the electro-photographic process, and therefore generate no measurable ozone gas (O toner cartridge and a charging transfer roller in the printer.

). They use a charging roller in the

Product Information 1-11

Doing Business with HP

Technical Assistance

HP ASAP 1-800-333-1917 (U.S.)

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

HP FIRST

HP FIRST (Fax Information Retrieval Support Technology) is a phone-in fax service providing 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:

•

Service notes (HP Authorized Dealers) (password = 737842).

• Application notes.

• Product Data Sheets.

• Material Safety Data Sheets (MSDS).

• Typeface and accessory information.

• Printer support software information.

• Toner information.

• 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., 0-800-96-02-71 Netherlands, 06-02-22-420 Belgium (Dutch), 0800-1-1906 Germany, 0130-8100-61 Switzerland (German), 155-1527 Austria, 0660-8128 For English service outside the above countries, (31) 20-681-5792

1-12 Product Information

HP AUDIO-TIPS

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

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 HPPER at any prompt. For more information, or to join CompuServe, call 1-800-524-3388.

Customer Information Centers

For further technical assistance, service-authorized HP and dealer service personnel can contact the nearest Hewlett-Packard Customer Information Center, 1-800-752-0900 in North America.

Customer Support Center (Assist Line)

The HP Customer Support Center, (208-323-2551) is available to answer technical questions regarding setup, configuration, installation and operation of HP printers in the PC and Macintosh environments. The CSC Assist Line is available weekdays from 7 am to 6 pm Mountain Time (Wednesdays until 4 pm).

Questions relating to operating systems such as MS-DOS and UNIX, your network configuration, or network operating system cannot be answered by the Center and should be referred to your authorized reseller.

Printer Drivers

To order additional drivers for your software applications, call the HP Driver Distribution Center at 1-970-339-7009.

Product Information 1-13

European Customer Support Center

The HP European Customer Support Center, located in Amsterdam, Holland, is open from 8:30 am to 6:00 pm central European time (Wednesdays until 4:00 pm). Multilingual customer support representatives can answer technical questions similar to the U.S. CSC, described on the previous page. This service is available at no charge for a period equivalent to the original HP hardware warranty period.

Each time you call the HP European Customer Support Center, you will be required to provide the printer’s serial number and original date of purchase.

To receive a fax listing the supported languages on a country’s phone number, call HP FIRST (refer to “HP FIRST,” earlier in this section). You can also call the nearest HP Sales and Service office to obtain the telephone number for the Center. The Center features automated call-routing technology, so you will receive faster service if calling from a touchtone phone or tone dialer.

Other Areas

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

1-14 Product Information

Site Planning and Requirements

Site Requirements

The environmental specifications, listed in the Specifications section of Chapter 1, must be maintained to ensure the proper operation of this printer. Consider the following points before installing the printer:

• Install the printer in a well-ventilated area.

• Install the printer on a sturdy, level surface.

• Install the printer where the temperature and humidity do not

change abruptly. Do not position the printer near water sources, humidifiers, air conditioners, refrigerators, or other major appliances.

• Do not expose the printer to direct sunlight, dust, open flames,

or ammonia fumes. If the printer is placed near a window, make sure the window has a curtain or blind to block direct sunlight.

• Install the printer away from walls. There must be enough

space around the printer for proper access and operation (see Figure 2-1).

Site Planning and Requirements 2-1

Printer Space Requirements

Figure 2-1 Space Requirements

2-2 Site Planning and Requirements

Print Media Specifications

The complete media specifications are listed in the HP LaserJet Family Paper Specifications Guide (part no. 5961-0920), that

came with this manual.

Each tray has its own set of paper specifications. Do not use paper heavier than 36 pound from the MP tray (Tray 1), 28 pound from the PC tray (Tray 2), or 24 pound from the LC Tray (Tray 3).

Table 2-1 Media Specifications for MP Tray (Tray 1)

Media Siz e C apacity Weight/Thickness Range

Paper Letter, Legal,

Executive, A4

Envelopes COM10,

MONARCH, ISO DL, C5, B5

Transparencies Letter, A4 Approx. 75 0.0039 in. to 0.0045 in.

Labels Letter, A4 Approx. 75 0.005 in. to 0.007 in. thickness

Minimum Size: 3.5 in. x 6.5 in. (90 mm x 160 mm) Maximum Size: 8.5 in. x 14 in. (216 mm x 356 mm)

100 sheets at 20# (75 g/m

10 of any kind 16# to 24# (60 to 90 g/m

16# to 36# (60 to 135 g/m

)

thickness (0.099 to 0.114 mm)

(0.127 to 0.178 mm)

)

Table 2-2 Media Specifications for PC Tray (Tray 2)

Media Size Capa city Weight/Thickness Range

Paper Letter, A4 250 sheets at

20# (75 g/m

16# to 28# (60 to 105 g/m

)

Site Planning and Requirements 2-3

)

Table 2-3 Media Specifications for Optional LC Tray (Tray 3)

Media Size Capacity Weight/Thickness Range

Paper Letter, A4, Executive 500 sheets at 20#

(75 g/m

)

16# to 24# (60 to 90 g/m

)

Note Printing heavy paper stock (greater than 24 lb.

(90 g/m

) from the 500-sheet Lower Cassette

specifically is not supported.

Table 2-4 Media Specifications for Duplex Assembly (HP

LaserJet 4 Plus, 4M Plus, 5, 5M, and 5N pr inters)

Media Size Weight/Thickness Range

Paper Letter, Legal, A4 16# to 24# (60 to 90 g/m

)

2-4 Site Planning and Requirements

Adhesive Labels

Note

Label Construction

When selecting labels, consider the quality of each component:

Printing labels using the Duplex Assembly , the 500-sheet Lower Cassette (Tray 3) or the PC tray (Tray 2) specifically is not supported. Always use the MP tray (Tray 1) to print labels.

• Adhesives: The adhesive material should be stable at the

392° F (200° C) temperatures encountered in the printer’s fusing process. None of the adhesive should be exposed between the labels.

•

Label arrangement: If possible, use labels with no exposed areas between labels. If labels with exposed areas are used, they should be arranged on the carrier sheet (the backing) so that they cover the entire page with the exposed areas of the carrier sheet running lengthwise down the sheet. Using label stock with spaces between labels often results in labels peeling off during the printing cycle, causing serious jamming problems.

• Label curl: Labels must lie flat with no more than

0.5in(13mm) of curl in any direction.

• Poorly manufactured labels: Do not use labels with

wrinkles, bubbles, or other indications of delamination.

Site Planning and Requirements 2-5

Overhead Transparencies

Note

Overhead transparencies used in HP LaserJet printers must be able to withstand the 392° F (200° C) temperature encountered in the printer’s fusing process. See the HP LaserJet Family Paper Specifications Guide for more information.

Caution

Printing overhead transparencies using the Duplex Assembly, the 500-sheet Lower Cassette (Tray 3) or PC tray (Tray 2) specifically is not supported.

Use only overhead transparencies recommended for use in laser printers.

Envelopes

Many kinds of envelopes can be printed with your printer. Some envelope styles perform better than others because their construction is better suited to feeding through a laser printer.

Hewlett-Packard Company neither warrants nor recommends the use of a particular brand of envelope. Envelope properties are subject to change by envelope manufacturers, and Hewlett-Packard Company has no control over such changes.

2-6 Site Planning and Requirements

Envelope Construction

The following table lists the kinds of envelopes you can print in the MP Tray (Tray 1).

Table 2-5 Specifications for Envelopes

Item Specifications

Minimum envelope size 3.5 in x 7 in (86 mm x 178 mm) Maximum envelope size 7.4 in x 10.5 in (188 mm x 267 mm) Basis Weight 16 to 24 pound (60 to 90 g/m2) Quantity Maximum 10 envelopes

Envelope Size Dimensions

Commercial #10 (COM 10) 4.1 in x 9.5 in (105 mm x 241 mm) #7 3/4 (Monarch) 3.8 in x 7.5 in (98 mm x 191 mm) DL 109 mm x 218 mm (4.3 in x 8.6 in) C5 163 mm x 231 mm (6.4 in x 9.1 in) B5 178 mm x 251 mm (7.0 in x 9.9 in)

See the HP LaserJet Family Paper Specifications Guide for more information.

Site Planning and Requirements 2-7

2-8 Site Planning and Requirements

Configuration

Introduction

The Configuration of the printer consists of setting hard and soft user defaults, and setting up the host computer to communicate with the printer (System Configuration). For installation instructions refer to Installation in the Getting Started Manual that is shipped with the printer.

Hard defaults are the I/O Menu and Configuration Menu settings. These are set when the printer is installed and remain as configured. The soft defaults (Printing menu and PCL menu) change with the print job requirements. System Configuration includes installing printer drivers, MODE commands and updating the AUTOEXEC.BAT file.

The instructions in this chapter explain how to access the printer features through the control panel, and how to set up the printer in different configurations. This chapter explains how to check the configuration settings, and how to verify that a configuration is correctly selected.

Setup and configuration information for accessories is available in this chapter. This information is intended to augment and not replace the information provided with the accessories themselves. If possible, use the information provided with the accessories when installing the accessory products.

Use the information that comes with the printer drivers when installing the printer. Many features of the printer are not

available without the correct printer driver for the software application.

Configuration 3-1

Using The Control Panel

(See Appendix B for LaserJet 5 information.)

Figure 3-1 Control Panel Keys

The control panel (see Figure 3-1) consists of eight keys, three indicator lights, and a 16-character display panel. The three indicator lights are described in Table 3-1.

Control Panel Keys

There are two rows of control panel keys. The upper row keys have one function each. The lower row keys have a second level of functions which are accessed by holding down [Shift]. Note that the alternate functions [Reset], [Continue], and [-] are coded the same color as [Shift]. Table 3-2 details both plain key functions and shift-key combinations.

3-2 Configuration

Table 3-1

Indicator Lights

Indicator Mode Description

Ready On: Ready to print.

Flashing: Processing a print job. Do not tak e off line or switch

Off: Not ready; see display for message.

On Line On: Ready to receive data.

Flashing: Going from on line to off line. Off: Off line. Other keys can be accessed.

Form Feed On: Data still in printer buffer.

Flashing: Buffered data being printed. Off: No buffered data in printer.

off.

Configuration 3-3

Table 3-2

Control Panel Key Functions

Key Function

[On Line] Switches the printer between ON LINE (communicating with the

[Form Feed] Prints any data remaining in printer’s buffer. It cannot be used to send

[MP Paper Size]

[Enter] Saves a selection in the printer’s “permanent” memory. An asterisk (*)

[Shift] Accesses the lower labels ( [Reset], [Continue], and [-]) on the control

[Menu] [Menu] cycles through the menu selections, returning to 00 READY at

[Continue] Continue ([Shift] + [Item]) allows the printer to resume printing after it

[+] or -] [+] or [-] allows you to step (by momentarily pressing the key) or scroll

computer or other data source) and OFF LINE (not communicating). For the printer to receive data, both the On Line and Ready indicator lights must be on.

a blank sheet of paper through the printer. Selects the physical paper size loaded in the MP tray only when it is

operating as a PC tray.

appears next to the item to indicate that it is now the default. The selection remains even if the printer is switched off or you perform a reset.

If buffered data or temporary data (such as temporary downloaded typefaces) are present, [Enter] only marks the items with an asterisk (*) as the default. When you press [On Line] or [Menu], the message 10 RESET TO SAVE appears. There are three choices:

[Reset] Clears page buffers

RESET MENU (See the following table.) Clears page buffers

[On Line] Places the printer on line without performing a

reset.

panel. It works like the [Shift] key on your computer’s keyboard.

the end of the cycle unless an error, warning, or configuration problem is encountered. If an option such as PostScript or a different I/O has been added, that menu appears in the menu sequence.

has been placed off line due to an error condition or a device attendance request (such as 21 PRINT OVERRUN). The [Continue] key clears most error messages and places the printer back on line. It functions like the [On Line] key except:

1. Continue does not override an error condition.

2. Continue allows you to override the paper or envelope siz e selection regardless of what size media is in the MP tray.

3. Continue allows you to override a request to manually feed paper or an envelope; it will selec t paper from the next available source instead.

(by holding down the key) through the item choices for a specific menu. [Shift] [+] (or [-]) allows you to cycle through the item choices in reverse order.

3-4 Configuration

Reset Menu

Use Reset Menu function with caution. It can result in loss of buffered page data or printer configuration data. Reset Menu is activated by holding down both [Shift] and [Menu] for up to 10 seconds until RESET=MENU* appears. Use [+] or [-] to cycle through items and [Enter] to select the item. The reset is executed by pressing [On Line].

Table 3-2 Reset Menu Functions

[Reset]

(and Menu of Resets)

The three

RESET=

choices are:

* indicates factory default.

A reset ([Shift] + [Menu]) displays a 07 RESET, clears the printer’s page buffer, removes all temporary typefaces and macros, and makes the current user-established defaults “permanent.” They will be the default values until they are changed by the user.

To access the Menu of Resets, hold down both [Shift] and [Menu] for about 10 seconds until RESET=MENU* appears in the display panel. Use [-] to cycle through the display choices, and [Enter] to select the option. Execute the reset by pressing [On Line]. The printer responds with a reset message for the choice selected.

MENU* clears the page buffer, removes all temporary personality data such as downloaded typefaces, and resets all printing environment parameters (such as number of copies, paper size, etc.), and sets user-selected defaults (such as MP tray default configuration) to their factory defaults. Certain items, such as the display language or I/O configuration, are not reset. RESET=MENU clears only the active I/O input buffer.

ACTIVE I/O clears the page buffer, removes all perishable personality data such as temporary typefaces, and clears the input and output buffers for the active I/O only.

ALL I/O clears the page buffer, removes all perishable personality data such as temporary typefaces, and clears the input and output buffers for all I/Os.

Configuration 3-5

Control Panel Menus

Figure 3-2 shows the menus and menu items available with the basic printer configuration. Not all menu items are discussed in this section. Only those items of specific interest from a service standpoint, or items new to the printers are discussed in this section. If options such as PostScript or a different I/O are installed, new menu items automatically are added at the appropriate location. For example, a PostScript Menu appears following the PCL Menu.

3-6 Configuration

Figure 3-2 Control Panel Map

Configuration 3-7

Table 3-3 Printer Menu Items

Item Options Explanation

COPIES 1* to 999 Select any number from 1 to

PAPER

LETTER* (110V printers), LEGAL, A4* (220V printers)

EXEC

999. Sets default image si ze,

unless software setting overrides it.

ENVELOPES

ORIENTATION P*, L P means portrait (vertical)

FORM

(5 to 128 lines)

MANUAL FEED OFF*, ON Only for MP Tray. RET OFF, LIGHT, MEDIUM*, DARK Refines print quality.

ECONOMODE

(HP LJ4+only)

DUPLEX

(HP LJ4+ with Duplex only)

BIND

(HP LJ4+with Duplex only)

*indicates factory default.

COM10* (110V printers), MONARCH, DL* (220V printers),

C5, B5

and L means landscape (horizontal) orientation.

60* (110V printers) 64* (220V printers)

OFF*, ON Reduces amount of toner

OFF*, ON Allows for printing on both

LONG EDGE* SHORT EDGE

Sets vertical spacing from 5 to 28 lines.

used.

sides of paper.

Determines orientation of page.

3-8 Configuration

Table 3-3 PCL Menu Items

Item Options Explanation

FONT SOURCE I*

FONT NUMBER 0* to 999 Number assigned to each

PITCH or PT. SIZE

SYM SET ROMAN-8

*indicates factory default.

C S

Mn (1-4)

Pitch:

10.00*

Point:

12.00*

Many others

Internal fonts* Cartridge fonts Permanent soft fonts SIMM Module: n=slot number. Typefaces stored in one of the four ROM SIMM slots (M1=slot 1, for example).

typeface. Depends on the FONT

SOURCE and FONT NUMBER selected.

A unique grouping of all characters in a font.

Table 3-4 Job Menu Items

Item Options Explanation

RESOLUTION 300 or 600* Sets the resolution.

PERSONALTY AUTO*

PWRSAVE

(HP LJ4+ only)

IO TIMEOUT 15*

PAGE PROTECT

(HP LJ4 only)

*indicates factory default.

PCL

PS (Postscript)

OFF, 15 MIN, 30 MIN, 1 HR, 2 HRS, 3 HRS

(5 to 300) AUTO*, ON Only seen with error 21 PRINT

Sets the printer language.

Sets the amount of time the printer is idle before the fuser shuts down.

Time in seconds that the printer waits before ending a print job.

OVERRUN.

Configuration 3-9

Table 3-5 Configuration Menu Items

Item Options Explanation

MP TRAY FIRST*

Paper is selected first.

CASS

MANUAL

LOCK NONE*

MP PC LC

and combinations

CLR WARN ON*, JOB Indicates a transient condition.

AUTO CONT OFF*

DENSITY 1, 2, 3*, 4, 5 Determines relative darkness of print.

LOW TONER CONT*

STOP

*indicates factory default.

Operates as a PC tray. Operates as a manual feed tray.

No trays are locked out. The MP tray is locked out. The PC tray is locked out. The optional Lower Cassette is locked out.

When an error is encountered, printer goes off line until [SHIFT] + [CONTINUE] are pressed.

When an error is encountered, printer goes off line for 10 secs., then comes back on line.

Higher numbers yield darker print but shorter toner cartridge life. May take up to 20 pages for new setting to stabilize.

Printer remains on line and continues to print after the 16 TONER LOW message is displayed.

Printer goes off line after the 16 TONER LOW message is displayed.

3-10 Configuration

Table 3-6

Memory Configuration Items

Item Options Explanation

IO BUFFER AUTO*

OFF ON

IO SIZE 10K and up With IO BUFER ON, adjust size in

RESRCSAVE

AUTO*

OFF ON

PCL MEM PS MENU

*indicates factory default.

0K and up Increases memory for each installed

Memory is automatically determined by the printer. No memory is set aside. Size can be manually adjusted

increments of 10. Saves resources and extra memory

and personality SIMM are installed in printer. Printer automatically determines the amount of memory to allocate to personality. No memory is allocated. Additional memory management selections appear.

personality.

Table 3-7 Parallel Menu Items

Item Options Explanation

HIGH SPEED YES*

ADV FNCTNS ON*

OFF

*indicates factory default.

Sets parallel interface to run at a higher data rate. Sets the parallel interface to run at a slower data rate.

Configuration 3-11

Table 3-8 Serial Menu Items

Item Options Explanation

SERIAL RS-232*

RS-422

PACING DTR/DSR*

XON/XOFF

BAUD RATE 9600*

300 to 57600

ROBUST XON

ON*

OFF

DTR POLARITY HI*

*indicates factory default.

(HP LJ 4 only)

Use the RS-422 when a longer cable is needed.

Use if the computer requires hardware flow control. Use if the computer requires software flow control.

Tells how fast information will be transferred from the computer to the printer.

Appears when pacing is set to XON/XOFF. Printer sends XON when printer is put on line or when sufficient buffer space is available. Printer sends one XON when it can accept more data or when it is put on line.

Pin 20 is high. Pin 20 is low.

Table 3-9 Test Menu Items

Item Explanation

SELF TEST With SELF TEST displayed, press [ENTER] to run a self test. CONT SELF TEST Prints continuous self test pages until [ON LINE] or [SHIFT] +

PCL TYPE LIST Prints a list of typefaces and bitmapped fonts in your printer. PCL DEMO PAGE Prints a page that illustrates the printer features.

*indicates factory default.

[CONTINUE] are pressed.

3-12 Configuration

Printer Features

Some of the important features of the HP LaserJet 4, 4 Plus, and LaserJet 5 printers are described below.

Page Protection (HP LaserJet 4 only)

Note

Page protection reserves additional memory for the page image process, allowing the printer to create an entire page image in memory before paper starts through the printer. The memory required for page protection is dependent upon the resolution selected: a 600-dpi page can take 4 times as much memory as a 300-dpi page. If you use page protection, set it for the size you expect to use most often. Be sure you have sufficient installed memory for the option you select. Complex graphics and PostScript applications also require more memory than is included in the standard printer configuration.

Note

The default is PAGE PROTECT=OFF*. Unless you frequently get 21 PRINT OVERRUN messages, you

may not need to set a value for page protection.

Unlike earlier HP LaserJet printers, page protection and resolution can be set regardless of memory installed in the printer. Be aware that setting page protection ON will decrease the amount of memory available for other memory dependent features.

Configuration 3-13

Resource Saving (HP LaserJet 4 Plus and 5 only)

Resource Saving gives the printer the ability to save certain entities such as permanent soft fonts, macros, symbol sets and user-defined graphics patterns when the printer changes personalities, resolutions or page protect modes. For example, if a user switches the LaserJet 4 printer from PCL mode to PostScript mode, all PCL soft fonts macros are lost. The HP LaserJet 4 Plus/4M Plus printer would not clear these entities from memory. When the user switches back to PCL from PostScript all of the PCL entities would still be resident in the HP LaserJet 4 Plus/4M Plus printer. Resource Saving can only be accessed when the printer has the PostScript language installed and a minimum memory configuration of 7 MB. If the printer has a duplexer option, the minimum amount of memory necessary to access Resource Saving is 13 MB.

The Resource Saving configuration is located in the Memory Configuration Menu. Resource Saving can be set for three modes, AUTO (default), ON, and OFF. Auto configuration sets the Resource Saving for PCL and Postscript to a minimum value (400 KBytes) for each personality. Setting Resource Saving to ON allows the user to determine how much printer memory will be used for Resource Saving for the PCL personality and the Postscript personality. The memory can be allocated in 100 KBytes increments. For example, if the user sets the Resource Saving memory size to 200 KBytes, a total of 400 KBytes of memory will be assigned to Resource Saving. 200 KBytes of memory will be used for Postscript Resource Saving and 200 KBytes of memory will be used for PCL Resource Saving. Turning Resource Saving OFF disables the Resource Saving function and no memory is allocated to Resource Saving.

3-14 Configuration

I/O Buffering (HP LaserJet 4 Plus and 5 only)

I/O buffering allows the user to allocate printer memory to hold the job while it prints, freeing up the host system sooner, like a print spooler. The standard printer has approximately 10 KBytes of memory allocated to I/O buffering and an additional 100 KBytes of memory is assigned to I/O buffering for each 1 MByte of memory added to the printer.

If the printer has a minimum of 6 MBytes of memory installed (12 MBytes of memory for a printer with a duplex option), the I/O buffer size can also be adjusted from the control panel. Three settings exist for the I/O buffer; AUTO (default), ON, and OFF. AUTO sets the printer’s I/O buffer to a minimum value that is determined by the total amount of memory that is resident in the printer. Setting I/O buffering to ON allows the user to set the I/O buffer size from the front panel. Setting the I/O buffering to OFF disables I/O buffering .

Note

When you change the I/O buffer setting all downloaded resources are deleted.

Configuration 3-15

EconoMode (HP LaserJet 4 Plus and 5 only)

The EconoMode setting uses approximately 50% less toner than standard mode printing by reducing dot density. EconoMode, which can also be thought of as “draft mode,” is user selectable via a front panel key, a Printer Job Language (PJL) sequence using HP Explorer’s Remote Control Panel or through application software. The default setting is OFF.

EconoMode, Medium Density

Normal Mode, Medium Density

Note

EconoMode does not affect print speed or memory usage.

Resolution Enhancement (REt)

The printer Formatter PCA contains circuitry for Resolution Enhancement technology (REt), which modifies the standard video dot data on its way to the DC Controller to produce “smoothed” black-to-white boundaries. REt is user-adjustable from the front control panel, HP Explorer’s Remote Control Panel (Print Quality Category) or from some software applications. Available settings are Light, Medium, Dark or Off. The default setting is Medium.

Note

REt settings sent from software or printer drivers override any control panel settings.

3-16 Configuration

Memory Enhancement technology (MEt) (HP LaserJet 4 Plus and 5 only)

HP Memory Enhancement technology (MEt) effectively doubles the printer’s standard memory through a variety of font and data compression methods. MEt also automatically compresses fonts for desktop publishing applications.

When printing graphics, MEt analyzes each page as it is being printed and automatically applies a variety of methods to print the complete page at the correct resolution. Two of these methods, Image Adapt and Page Protect, are user-selectable through HP Explorer’s Remote Control Panel (Printer Memory Category).

Note

MEt is only available in PCL mode; it is not functional when printing in PostScript mode.

Density

Print density is a measure of the darkness of print on the page. The factory default setting is 3, but you can experiment with different settings to find the best setting for your job. The lower numbers lighten the print, the higher numbers darken the print. (1 = low, 5 = high).

Print density can be affected by resolution enhancement, which can be set for dark, medium, or light values.

Note

To adjust print density:

1 Press [On Line] to take the printer off line. 2 Press [Menu] until CONFIG MENU appears in the display. 3 Press [Item] until DENSITY appears in the display. 4 Press [+] or [-] to select the desired setting. 5 Press [Enter] to save the selection. 6 An asterisk (*) appears to indicate that your selection was

saved.

7 Press [On Line] to return the printer to active status. 8 Print approximately 20 pages to allow the new density setting

to stabilize.

When you set the density to a higher number, toner is used at a faster rate, reducing toner cartridge life.

Configuration 3-17

Network Security

The HP LaserJet 4 Plus and 5 printers allow the System Administrator to lock out other user’s ability to change most printer control panel settings. This is done by setting a password and turning LOCK on. The message MENU LOCKED will appear when a user tries to change the printer control panel settings.

Note

If you forget your password, you can perform a “Cold Reset” by holding down the [On Line] key (Go on LJ 5) while turning the printer on.

There are four ways to implement printer security:

1 HP Explorer software’s Remote Control Panel for DOS users,

if you are directly connected to the printer through its parallel port.

2 HP LaserJet Utility for Macintosh users. 3 JetAdmin for Novell networks. 4 PJL escape sequence sent from any ASCII editor.

Remote Control Panel (DOS)

Select OPTIONS from the Remote Control Panel screen.

2 Select SECURITY from the OPTIONS menu. 3

Select Use Password from the Printer Passwords box.

Type in the password and confirm it in the New Password box. Numeric password values can be set from 0 to 65535. (If you already have a password, go the the next step; you will be prompted for your password.)

To lock the printer’s control panel, select ON in the Control Panel Lock box.

HP LaserJet Utility (Macintosh)

1 Select the HP LaserJet Utility icon in the HP LaserJet

folder on your hard drive.

2 If necessary, double click on the Select Printer button to

select the the appropriate printer.

Under the Extras menu, select Control Panel Lock. In the Control Panel Lock: HP LaserJet 4M Plus or 5M

screen, click on the On (Locked) box, then click the OK button. You will be prompted to enter a password if the password has been set. If a password has not been set, go to the next step.

3-18 Configuration

5 Under the Extras menu, select Set Printer Password. On

the Printer Security screen, enter the new password (numeric values can be set from 0 to 65535), and click on the OK button.

HP JetAdmin Utility (Novell Networks)

1 Run JETADMIN. 2 Select the printer you want to configure. It is listed under its

“JetDirect Interface Name” which appears on the self test page/configuration plot.

3 Select Configuration.... The Printer I/O Configuration

screen appears.

4 Select Advance.... The Advance Settings screen appears.

5 Select Lock Printer Control Panel....

6 Click on Select... (the Advanced: Printer Security screen

appears), then click on the ON button.

7 Click the OK button.

ASCII PJL Escape Sequence

Password: send this sequence to the printer from any ASCII

editor:

%-12345X@PJL JOB

@PJL DEFAULT PASSWORD=[numeric password (0 to 65535)] @PJL EOJ

%-12345X

CPLOCK: to turn on or off, assuming that a password has NOT

been set, send the following ASCII sequence to the printer:

%-12345X@PJL JOB

@PJL DEFAULT CPLOCK=ON [OFF] @PJL EOJ

%-12345X

If a password HAS been set, send the following ASCII sequence to the printer to turn CPLOCK on or off.:

%-12345X@PJL JOB PASSWORD=(numeric password)

@PJL DEFAULT CPLOCK=ON(OFF) @PJL EOJ

%-12345X

Configuration 3-19

Service Mode

(Refer to Appendix B for LaserJet 5 information.)

The Service Mode should be used only by authorized service personnel. The following can be executed while in the Service Mode:

• Print a Service Mode Self Test.

• Verify the Page Count, (the page count also is displayed on the

standard self test). Set the Page Count.

•

• Set the Cold Reset Default (This sets the factory default paper

size. Use when replacing non-U.S. Formatters).

• Set the Diagnostic Functions ON or OFF (for software

developers use only).

• Demo Page=On/Off. Removes the Demo Page option from the

self test menu.

• BIG Data=On/Off (HP LaserJet 4 Plus only). Setting BIG

Data to ON increases the size of the printer’s status Readback Buffer.

The following procedure is used to initiate the Service Mode.

1 Hold down the [ON LINE], [FORM FEED], and [ENTER] keys while

powering ON the printer, until the ON LINE and FORM FEED Indicators are both illuminated and the Display

Window is blank. (If the Display Window reads 05 SELF TEST at this point, the keys were released too soon. Repeat

this step until successful.)

2 Press the [FORM FEED] key, then the [ENTER] key. The

message SERVICE MODE is displayed briefly, then the printer automatically begins a 05 SELF TEST.

After several seconds, the [ON LINE] and [FORM FEED] lights turn OFF. (The printer may display 02 WARMING UP if it has not warmed up completely.)

After the printer has warmed up and passed the self test, SERVICE MODE is displayed.

To exit the Service Mode press the [ON LINE] key.

3-20 Configuration

Setting the Page Count

The page count is stored in the printer’s Non-Volatile Memory (NVRAM). If it is necessary to replace the Formatter PCA, the page count should be reset to the printer’s original page count to reflect the age of the print engine. Use the following procedure to set the page count:

1 Enter the Service Mode as described previously. 2 When SERVICE MODE is displayed, press the [MENU] key to

access the Service Menu. Press the [ITEM] key to step through the menu.

3 PAGES=XXXXXX is displayed. XXXXXX represents the page count

currently stored in the printer’s NVRAM. The underlined character denotes the cursor position.

4 Press the [ENTER] key to scroll the cursor to underline the

desired digit.

Press the [+/-] key to select the correct value.

6 Press [ENTER] to store the new value in NVRAM. 7 Set each digit in the same manner. When the last digit’s value

has been entered, press [ON LINE] to return to SERVICE MODE.

8 Click the [ON LINE] key one more time to exit Service Mode.

Configuration 3-21

Setting the Cold Reset Default

The default paper size outside of the U.S. is typically A4. Therefore, when replacing Formatters where the desired default is A4, the Customization Variable must be set to A4. This prevents the Cold Reset procedure from resetting the paper size to Letter. To set the Customization Variable:

1 Enter the Service Mode as described previously. 2 Press the [Menu] key to display SERVICE MENU. 3 Press the [Item] key to display CR PAPER=LETTER 4 Press the [+/-] key to toggle between Letter and A4 paper. 5 Press the [Enter] key to save your selection. 6 Press [On Line] to exit the Service Mode.

3-22 Configuration

Cold Reset

The Cold Reset feature of the printers allows the printer to be returned instantly to the factory default configuration settings. This feature is valuable because the the Dynamic I/O and PJL features of the printer enable any user connected to any I/O to access and change the default configuration as applications require. When setting up the printer in a new location, or when troubleshooting printer problems, always perform the Cold Reset before entering the selected user defaults. A Cold Reset can not

reset the page count, cold reset tray size, or display language settings. If the Control Panel is locked, a Cold Reset

will disable the lock and return the printer to the factory defaults. Inform the system administrator of all Cold Resets.

A Cold Reset is performed as follows:

1 Turn OFF the printer. 2 Hold the [On-Line] (or Go for the LJ5) key down while powering

ON the printer.

3 The message COLD RESET is displayed. The COLD RESET does

not take effect until the 00 READY message is displayed. When the 00 READY message is displayed, the default settings

have been returned to the factory defaults and the printer is ready to accept new settings.

Configuration 3-23

Understanding the PCL Self Test Printout

(Refer to Appendix B for LaserJet 5 information.)

Table 3-10 Self Test Printout Items for the HP LaserJet 4/4M

Item

Figure

3-3

1 Standard Menu Selections: Shows standard menu selections, such as

Printing Menu and PCL Menu, and menu items, such as Copies and MP tray,

in the order they appear in the control panel display.

2 Optional Menus: Shows optional menu selections, such as the PostScript

Menu and MIO Menu, and menu items, such as PRT PS ERRS, in the order

they appear in the control panel display. An optional menu automatically is

added to the control panel display and Self Test printout after the option is

added to the printer.

3 MIO Menu: Once a Modular I/0 is added, it appears after the Serial Menu in

the control panel display and in the Self Test.

4 MIO Information: Reserved for MIO and Network statistics. Note that for some

installed MIO options, this block of information can take up to 20 lines and

three columns.

5 Formatter Number: Shows the printer’s unique formatter number. 6 RAM Size: Shows the total amount of installed printer memory, including

added optional memory. Two MBytes of installed memory is standard with the

printer. If you install optional memory , a self test can be used to verify proper

installation.

7 Page Count: Shows how many pages were printed. You can use the page

count to track printer use. The page count is always updated.

8 Datecodes: Eight-digit dates (YYYYMMDD) indicating when the formatter

firmware and internal typefaces were last revised. This information may be of

use to a service technician.

9 Other Installed Options: Use this area of the self test to verify the installation

of typeface cartridges, paper trays, and other installed options.

10 Resolution Enhancement: The REt pattern only appears when the printer is in

600 dpi mode. The REt pattern varies with the RET setting. To optimize REt,

adjust REt and density settings to minimize the appearance of vertical lines

through the block.

11 Print Pattern: Use the text print pattern to check print density and quality.

Explanation

3-24 Configuration

4 5 6 7 8

Figure 3-3 HP LaserJet 4/4M PCL Self Test Printout

Configuration 3-25

Table 3-11 Self Test Printout Items - HP LaserJet 4 Plus/4M

Plus

Item

Figure

3-4

1 Standard menu selections: Lists selections in the order in which they

appear in the control panel display.

2 Optional menus: Shows optional menu selections, such as the

PostScript Menu, and menu items, in the order in which they appear in the control panel display. Optional menus automatically appear in the control panel display when options are added to the printer.

3 MIO Menu: When an optional Modular I/O is added, the MIO Menu

appears following the Serial Menu in the self test and control panel display.

4 MIO information: Reserved for MIO and network statistics. For some

installed MIO options, this block of information can be as long as 20 lines

and three columns. 5 Formatter Number: Shows the printer’s unique formatter number. 6 RAM size: Shows total installed printer memory 7 PCL Memory Information: Shows the total amount of installed memory.

Also indicates the amount of available memory for PCL applications. 8 Page Count: Shows number of pages the printer has printed. 9 Firmware Datecode: Eight-digit date (YYYYMMDD) and version number

of formatter firmware.

10 Control Panel options status: Shows status of control panel Lock and

Password functions.

Explanation

11 Other installed options: Lists optional typeface cartridges, paper trays ,

personalities, and other installed options.

12 Resolution Enhancement: When resolution is set to 600-dpi, the REt

block appears here. The REt block illustrates current resolution

enhancement. To optimize REt, adjust REt and density settings to

minimize the appearance of vertical lines through the block.

13 I/O Buffering and Resource Saving: Information about the current

configuration appears here. If the printer does not have enough memory

installed to enable I/O Buffering or Resource Saving, the amount of

additional memory needed appears here.

14 Print Pattern: Illustrates print density and quality.

3-26 Configuration

Figure 3-4 HP LaserJet 4 Plus/4M Plus PCL Self Test

Printout

Configuration 3-27

Changing the Control Panel Display Language

The default control panel display language is set for English. Supported languages are: English, French, German, Italian, Spanish, Finnish, Danish, Dutch, Swedish, Norwegian, and Portuguese. Follow these instructions to change the display language.

1 Switch OFF the printer.

Press and hold [Enter] (or Select on the LJ 5) while switching

the printer ON until CONFIG LANGUAGE appears in the display.

3 After the power-on self test, LANGUAGE=ENGLISH appears. Press

[+] until the desired language appears in the display.

4 Press [Enter] to save your choice. An asterisk (*)appears next

to the language to indicate it is now the default.

5 Press [On Line]. The On Line indicator is lit, and display

messages are now in the language you selected.

Note

If the display language is changed, replace or install the Control Panel Overlay to match the selected language. See the index to Chapter 6 for instructions on changing or installing the Control Panel Overlay.

Failure to explicitly select a language after powering on the printer while holding down the

ENTER or SELECT key will cause the printer to

prompt for a specific language every time it is powered on.

3-28 Configuration

Test Print Button

Figure 3-5 Test Pr int Button Location

The Test Print button access hole is located on the side of the printer. Press the Test Print button using a tool similar to a paper clip (see Figure 3-5). The 15 ENGINE TEST only prints from the PC tray (Tray 2).

Configuration 3-29

Figure 3-6 Test Print Pattern

Pressing the Test Print button will initiate a 15 ENGINE TEST. This is an engine test only. The Format PCA is bypassed while printing this test, although a formatter problem can interfere with this test. A page of vertical lines is printed if the print engine is operating correctly (see Figure 3-6).

3-30 Configuration

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 PC 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

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 in the root directory, or in a directory specified in a preceding PATH command in the AUTOEXEC.BAT file.

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.

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

Configuration 3-31

Serial MS-DOS Commands

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

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

3-32 Configuration

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 bi-directional communications between the printer and the host. The default setting is ON. This default setting (ON) must be active in order to use 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 from the computer. If you need to locate the printer between 51 and 2000 feet from the computer, use an RS-422A serial configuration (not available on the LaserJet 4 Plus or 5).

Since the default-printer I/O setting on the printer is parallel, remember to change the settings on the printer control panel for serial printing.

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. 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 BAUD rate setting is:

BAUD RATE=9600*.

Configuration 3-33

Pacing (Handshaking)

Pacing (or “handshaking”) is a type of communication between the printer and the computer. This is an important item 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 Serial Menu. Two types of handshaking are supported by your printer:

• Select DTR/DSR through the Serial Menu’s PACING item if the

computer requires hardware flow control (most personal computers do). Through the Serial Menu’s DTR POLARITY item, the DTR polarity can be set to High or Low. The default is DTR

POLARITY=HI

• Select XON/XOFF through the Serial Menu’s PACING 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 XON/XOFF is selected. Through the Serial Menu’s ROBUST XON item, Robust Xon can be set to ON (the default) or OFF. Note that the ROBUST XON item only appears under the Serial Menu if XON/XOFF was selected.

3-34 Configuration

Serial Cable Pin-outs

The following cable diagrams show the cable pinouts for the most common serial configurations.

DB-9 RS-232 Serial Connection — HP LaserJet 4

If the computer has a serial port with 9 pins, use the cable or equivalent for the HP LaserJet 4.

Figure 3-7 24542G Cable Pinout for 25 to 9 Pin Connector

Configuration 3-35

DB-25 RS-232 Serial Connection — HP LaserJet 4 Plus/5

If the computer has a serial port with 9 pins, use the C2932A or equivalent cable for the HP LaserJet 4 Plus.

Figure 3-8 C2932A Cable Pinout for 9 to 9 Pin Connector

3-36 Configuration

DB-25 Serial Connection — HP LaserJet 4

If the computer has a serial port with 25 pins, use the 17255D cable or equivalent for the HP LaserJet 4.

Figure 3-9 17255D Cable Pinout for 25 to 25 Pin Connector

Configuration 3-37

DB-25 RS-232 Serial Connection — HP LaserJet 4 Plus/5

If the computer has a serial port with 25 pins, use the C2933A or equivalent cable for the HP LaserJet 4 Plus.

Figure 3-10 C2933A Cable Pinout for 9 to 25 Pin Connector

3-38 Configuration

RS-422A Serial Connection (Not available on the HP LaserJet 4 Plus or 5 printers)

If you are configuring the computer to use an RS-422A serial port, you need a special cable. Contact the computer or printer network manufacturer to see if an RS-422A cable is available. If no cable is available, contact your computer manufacturer for your computer pin assignments and have a cable constructed.

Figure 3-11 RS-422A Cable Pinout

RS-422A Serial Configuration (LaserJet 4 only)

The default configuration for the serial port on the printer is for RS-232C serial communication. To set the printer to use RS-422A serial communication, change the control panel Serial Menu’s SERIAL setting to SERIAL=RS-422.

Note

Hardware pacing for RS-422 serial communication is not available on the printer.

Configuration 3-39

Modular I/O Configuration

The printers are equipped with a modular I/O slot. A modular I/O interface card can be plugged into that slot to increase the number of interfaces available.

A modular I/O card can provide increased printer performance when printing from a network. In addition, a modular I/O card provides the ability to place the printer anywhere on the network. This eliminates the need to attach the printer directly to a server or a workstation, and enables you to place your HP LaserJet printer closer to your network users.

Note

The HP JetDirect Card allows these printers to operate in multiple operating system networks.

To determine the appropriate MIO solution for a specific host system/application environment, refer to the latest edition of the “HP Peripherals Connectivity Solutions Guide.”

When you install a MIO card, you may need to perform a Cold Reset to reinitialize the printer’s control panel.

3-40 Configuration

Printer Drivers

Install Printer Drivers and Utilities

Printer drivers are specialized programs designed to allow specific software applications to function with the HP LaserJet printers. Printer utilities include such things as the HP Explorer program modules, which enhance the usability of the printer and provide convenient access to printer features outside of specific software applications.

How to Obtain Printer Drivers

First, check the software’s printer selection feature to see if the printer is listed among the available printers. If it is not, run the software’s SETUP or INSTALL program to install a “printer driver” or “printer file” for the printer.

Here are some ways to obtain printer drivers and Software Application Notes for HP LaserJet printers:

• Check the Printing Software package to see if it includes a

driver for your software.

• Order an updated driver from the software vendor.

• Call Hewlett-Packard at 970-339-7009.

• Obtain a driver request form by fax through HP FIRST

(call 1-800-333-1917) U.S. only.

• Download a driver through CompuServe’s HP Forum. To sign

up for CompuServe, call 1-800-524-3388.

Note

While waiting for a specific HP LaserJet printer driver, you can substitute a similar printer driver (such as a driver for the HP LaserJet III, IIIP, or 4 printer). These substitute drivers will allow you to use the printer, but they do not support all of the printer’s features.

Configuration 3-41

DOS Utilities

Use the DOS Utilities to install printer drivers for MS-DOS applications. Printer driver software for some common software applications are included the DOS Utilities. See the Doing Business With HP section of Chapter 1 for information on software drivers not included with the LaserJet DOS Utilities.

A DOS Utilities disk is shipped with every printer. If the DOS Utilities is not installed on the host computer, look for the DOS Utilities software disks in the documentation package that came with the printer and install the software.

3-42 Configuration

Packing the Printer

Repackaging Instructions

The printer warranty is for one-year and must be returned to an Authorized HP service center for service. If the original packaging material is no longer available, replacement packing and shipping material is available from HP’s Support Material Organization (SMO) for a charge. To order replacement packing and shipping material, call:

1-800-227-8164 (U.S.)

416-678-9430 (Canada)

To order the shipping box and packing inserts for the printers, ask for part number C2001-00906.

In other countries, return the printer to the selling dealer or the HP-authorized service center for your service area.

Packing Checklist

Remove and retain any accessories that were installed in the

•

printer. This includes:

• Toner Cartridge

• Optional Lower Cassette

• Envelope Feeder

Accessory Cartridge

•

Duplex Assembly (LaserJet 4 Plus/5)

• Optional Memory, Personality SIMMs, or Flash

• Include print samples that indicate the problem.

• If the problem is associated with media, include 50-100 sheets

of the media causing the problem.

Configuration 3-43

Installing The Optional Lower Cassette

Note

These printers have an optional 500-sheet Lower Cassette which is installed in the field. Follow these instructions to install the Lower Cassette.

1 Disconnect the cables from the printer. 2 Unpack the 500-sheet Lower Cassette Assembly. 3 Place the Lower Cassette base (without its paper tray) in the

selected location.

4 Place the printer on top of the Lower Cassette Assembly, as

shown in Figure 3-12.

Note

Please see also the Service Notes section for proper use and adjustment of the lower cassette.

Install the printer onto the Lower Cassette Base so that the alignment pins on the cassette base mate with the holes in the bottom of the printer.

Figure 3-12 Installing the Printer on the Lower Cassette

5 Reconnect the printer cables and run a self test to ensure the

lower cassette is recognized by the printer.

3-44 Configuration

Loading Paper into the Optional Lower Cassette

Figure 3-13 Pull the cassette tray straight out of the printer.

Figure 3-14 Adjust the cassette for the paper size you want

to load.

Configuration 3-45

Figure 3-15 Slide about 450 sheets of paper into the tray, up

against the adjustable bracket that sets the paper length.

Figure 3-16 Press down on the stack of paper until the top of

3-46 Configuration

the stack fits under the top edge of the back green bracket.

Figure 3-17 Push down the left corner of the stack until the

paper is secured undered the metal clip.

EXEC

LEGAL

LETTER

Figure 3-18 Set the knob on the top right of the cassette to

the paper size you have loaded.

Configuration 3-47

Figure 3-19 Note: cassette MUST be full before adj usting the

tension. To adjust the tension, tap the stack of paper several times and turn the leftmost knob on the cassette until the arrows on the indicator align. Tap the stack again and verify the arrows are still aligned.

Figure 3-20 Slide the cassette back into the Lower Cassette

assembly.

3-48 Configuration

Envelope Feeder Installation

For complete information about installing the Envelope Feeder, see Envelope Feeder User’s Guide. This guide is provided with the envelope feeder. The instructions below are not intended to replace the information of the Envelope Feeder User’s Guide.

Note

To install the Envelope Feeder:

Turn OFF the printer.

Open the MP tray.

3 Remove the black plastic cover from inside the printer (see

Figure 3-21).

The LaserJet 4, 4 Plus, and 5 printers all use different envelope feeder products.

Figure 3-21 Remove the Black Plastic C over

Configuration 3-49

Figure 3-22 Install the Envelope Feeder

4 Insert the Envelope Feeder firmly into the printer (see Figure

3-22).

5 Turn ON the printer.

LaserJet 4 and 4 Plus

The envelope size (EE TRAY=) appears on the display when the envelope feeder is installed and loaded with envelopes. The envelope size can be selected through the Control Panel. Paper jams can result if the envelope size selected does not match the envelopes loaded into the envelope feeder.

LaserJet 5

The envelope size (ENV FEED=) appears in the CONFIG MENU when the envelope feeder is installed. The envelope size can be selected in the CONFIG MENU. Paper jams can result if the envelope size selected does not match the envelopes loaded into the envelope feeder.

Note

3-50 Configuration

It is not necessary to configure the Envelope Feeder to the printer through the printer’s Control Panel. The printer automatically recognizes the presence of the Envelope Feeder and prints from the feeder as the software requires.

SIMM Installation

SIMM installation is covered in detail in the the printer’s User’s Manual and in the kit that accompanies the SIMM. The

instructions shown here are not intended to replace these sources.

Follow these instructions to install memory, language, and flash SIMM boards. Install all types of SIMM boards in the same manner.

Protecting the SIMM Board

SIMM boards can be damaged easily by small amounts of static electricity. To prevent damage from static electricity:

• Touch the surface of the antistatic package before removing

the board from its package. When handling the board, frequently touch bare metal on the printer or the antistatic bag, or wear an antistatic wrist strap.

• Avoid moving about the work area to prevent generating static

electricity.

• Handle the board carefully at all times. Avoid flexing it or

touching its components.

Configuration 3-51

Any SIMM board can be installed in any of the four SIMM slots. Because the slots are close together, we recommend installing them from right to left, starting with slot 1 and ending with slot 4.

Figure 3-23 Identifying the Four SIMM Slots

3-52 Configuration

Memory Requirements

A page’s complexity (rules, graphics, or dense text) may exceed the printer’s ability to create the image rapidly enough to keep pace with the printing process. If a page is too complex, only part of the page prints, and some print data loss is likely. In such cases, a 21 PRINT OVERRUN message (signifying possible loss of print data) or a Clearable Warning message appears in the display.

Table 3-12 Minimum Memory Recommendations

LaserJet 4 Only

PCL Only PostScript Only

Resolution 300 dpi 600 dpi 300 dpi 600 dpi

Letter/A4 Pages

Page Protect OFF Legal Pages

Page Protect OFF Letter/A4 Pages

Page Protect ON Legal Pages

Page Protect ON

2 (1.6)

2 (1.4) 2 (1) 6 (2.3)

2 (1.6) 2 (1.4) 3 (1.7) 6 (1.3)

2 (0.8) 6 (1.9) 2 (1) 6 (2.3)

3 (1.6) 6 (1) 3 (1.7) 6 (1.3)

1 More memory may be required if using downloaded soft fonts, forms, or complex text with a large num ber of downloaded typefaces.

2 Numbers in parentheses indicate the approximate amount of memory available to the user for data files, downloaded typefaces, and other non-system uses.

3 For P ostScript language applications only, a “mini-legal” page will print with this amount of memory.

Configuration 3-53

Caution

When removing a board from the antistatic package, avoid touching the metal traces on the SIMM board.

For memory boards, compare the part number on the outside of the package to the part number in the table below. If you have not received the correct board, notify your authorized Hewlett-Packard dealer immediately.

Table 3-13

SIMM boards

Part Number

Size

HP LaserJet 4/4M

C2063A One MB C2064A Two MB C2065A Four MB C2066A Eight MB

HP LaserJet 4+/4M+/5/5M/5N Size

C 3130A One MB

C3131A Two MB C 3132A Four MB C 3133A Eight MB C 3146A Sixteen MB

The LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133A, or C3146A) is not compatible with the HP LaserJet 4. If the LaserJet 4 Plus Optional Memory is installed in the LaserJet 4, the printer will display a “53.1X.08 ERROR” (X indicates the position of the SIMMs slot).

3-54 Configuration

Accessing the SIMM Slots

Please refer to Chapter 6, Removal and Replacement, for instructions on removing the SIMMS door to access the slots.

Note that access to the SIMM slots are slightly different for the various printer models.

Installing the SIMM Boards

Figure 3-24 Positioning the SIMM board with the notch at the

Through the open door, you can see the four SIMM board slots (see previous Figure 3-23). For easiest installation, fill the slots from right to left, starting with slot 1 (see the diagram on the SIMM slots door).

Remove the SIMM board from the antistatic package. Hold the board with your forefingers on the side edges and your thumbs against the back edge. Turn the board so the notch on one end is on the bottom and the metal teeth face the slot (see Figure 3-24.

bottom.

Configuration 3-55

Figure 3-25 Installing the SIMM Board

3 Hold the SIMM board at a 30-degree angle to the slot and

push the edge of the board evenly and firmly into the slot (see Figure 3-25 callout (A) ).

4 Rotate the SIMM board to the right until the board “clicks”

into the metal locking tabs, securing the board into place (see Figure 3-25 callout (B)).

5 Gently rock the SIMM board back and forth. If it is seated

correctly, it will not lift away from the slot. If it lifts up, you have not pushed it firmly enough into the slot. Try again.

Replace the SIMM door and screws.

7 Replace the right side cover. 8 Close the top front cover and gently press down on each end

until the cover is completely seated.

3-56 Configuration

Testing a SIMM Board

Use the procedures below to print a self-test page to verify SIMM board installation. Procedures are given for both memory and PostScript SIMMs.

Memory SIMM

Note

Running a Self Test Printout

Plug in the power cord and turn ON the printer.

After a few seconds, 00 READY should appear in the control

panel display. If an error message appears, refer to “Troubleshooting a SIMM Board” later in this chapter.

3 Press [On Line] to take the printer off line. 4 Press [Menu] until TEST MENU appears in the control panel

display.

5 Press [Item] until SELF TEST appears in the control panel

display.

6 Press [Enter] to print a self test. 7 Press [On Line] after the self test printed.

Locate “RAM SIZE” on the self-test printout. This is the amount of printer memory now installed in the printer.

For the LaserJet 5/5M/5N, the On Line key has been replaced by the Go key. The Enter key has been replaced by the Select key.

Configuration 3-57

Personality SIMM (PostScript)

A personality (printer language) SIMM installation can be verified as outlined below (a PostScript SIMM is used in this example).

Note

For the LaserJet 5/5M/5N, the On Line key has been replaced by the Go key. The Enter key has been replaced by the Select key.

1 Plug in the power cord and turn ON the printer. 2 After a few seconds, the on line indicator should light and 00

READY should appear in the control panel display. If an error message appears, refer to “Troubleshooting a SIMM Board” following.

3 Press [On Line to take the printer off line. 4 Press [Menu] until JOB MENU appears in the control panel

display.

5 Press [Item] until PERSONALITY=AUTO*, the default, appears in

the control panel display.

6 Press [+] until PERSONALITY=PS appears in the display. This

indicates that your printer recognizes that PostScript is installed. If PERSONALITY=PS does not appear, check the SIMM installation.

7 Press [On Line] to return the printer on line.

3-58 Configuration

Troubleshooting a SIMM Board

For more information about the service/error messages below, see Chapter 7, Troubleshooting.

Service / Error Messages

One of two messages can be generated when your printer is checking its SIMM internal memory.

61.X SERVICE

where X = 1, 2, 3, or 4

This error indicates a SIMM parity error. The x indicates which SIMM slot generated the error. If these messages appear first, check the HP part number to make sure you have the right SIMM board.

62.X ERROR

where X = 0, 1, 2, 3, 4, or 5

This error indicates your printer identified a problem while checking memory.

If x=0, the problem is in internal Read Only Memory (ROM) on the Formatter.

If x = 1, 2, 3, or 4, the problem is in SIMM slot 1, 2, 3, or 4.

If x = 5, the problem is in an external cartridge installed in the printer.

Refer to chapter 7 for more information.

Configuration 3-59

3-60 Configuration

Preventive Maintenance

Introduction

The printer requires minimum routine maintenance. Use this chapter for information on:

• Service Checkpoints. These are the items that must be

cleaned and checked when the Toner Cartridge is replaced, or before performing periodic maintenance.

• Toner Cartridge information, such as:

• Storing and installing the Toner Cartridge

• Refilled Toner Cartridges

• 16 TONER LOW message

•

Required periodic maintenance on:

• Transfer roller

• Separation pads

• Paper pickup rollers

Preventive Maintenance 4-1

Life Expectancy of Consumables

Always inspect the components listed in Table 4-1 for wear when servicing the printer. Replace these components as needed, based on printer failures or wear, not strictly on usage.

Table 4-1 Selected Service Consumables

DESCRIPTION QTY EST. LIFE

1. Toner Cartridge 1 6800

2. MP (Tray 1) Pickup Roller Assembly

3. PC (Tray 2) Pickup Roller 1 200,000

4. Separation Pad 1 200,000

5. Transfer Charging Roller 1 200,000

6. Fuser Assembly (115 V, 50/60 Hz)

Fuser Assembly (220 V, 50 Hz)

7. LC (Tray 3) Pickup Roller 1 200,000

8. Exhaust Fan 1 25,000 hrs.

Notes:

The

estimated Toner Cartridge life is based on A4 or letter size prints with an average

of 5% toner coverage, and with the density setting at 3.

(pages)

1 200,000

200,000

When print becomes faint, shake cartridge to distribute remaining toner.

Replace roller and separation pad together.

Look for glazing and cracks. Look for glazing and grooves.

Replace together with Pickup Rollers.

May affect print quality and/or paper jams.

May affect print quality and/or paper jams. L ook for marks on rollers.

Look for glazing and grooves. Replace the Separation Pad.

REMARKS

Note

For part numbers of the components listed in Table 4-1, see Chapter 8.

4-2 Preventive Maintenance

Service Checkpoints

This is a fold-out page 3 panels wide.

Figure 4-1 Maintenance Checkpoints

Preventive Maintenance 4-3

Cleaning Your Printer

When it is time to replace the toner cartridge, perform the cleaning procedures outlined in Figure 4-1.

4-4 Preventive Maintenance

HP C2037A, C2001A, C3917A, C3952A, C2039A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual