HP 4100DTN, 4100TN, 4100N, 4100 Service Manual

hp LaserJet 4100

service manual

HP LaserJet 4100 Series Printer

Service Manual _____________

Copyright Information

© 2001 Hewlett-Packard
Company

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

Publication number
C8049-90920

First edition, April 2001

Warranty

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

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

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

Trademark Credits

NERGY STAR

E

®

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

Microsoft

®

is a U.S. registered

trademark of Microsoft Corp.
MS-DOS

®

is a U.S. registered

trademark of Microsoft Corp.
Netscape

™

is a U.S. trademark of
Netscape Communications
Corporation.

PostScript

™

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

TrueType

™

is a U.S. trademark of

Apple Computer, Inc.

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

Contents

1 Printer description

Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Product compatibility matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Model and serial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Installation requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Environmental requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Print media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Supported types of print media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Types of print media to avoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Weight equivalence table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Adhesive labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Overhead transparencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Card stock and heavy paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Laser safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

2 Service approach

Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Parts and supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Printer documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

HP direct ordering for genuine HP parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Exchange program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

World Wide Web. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

HP service parts information compact disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

HP support assistant compact disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Toner cartridge information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Warranty statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Printer warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Limited warranty for toner cartridge life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

3 Printer operation

Using the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Control panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Control panel lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Control panel keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Settings and defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

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

Quick copy jobs menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Private/stored jobs menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

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

Printing menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Print quality menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Contents 3

Configuration menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

I/O menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

EIO menu (networked printers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Resets menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Service menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Page count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Maintenance count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Maintenance interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Serial number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Cold reset paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Clear event log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Top margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Tray 1 left margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Trays 2 and 3 left margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Testing the printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Engine test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Resetting the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Cold reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Clearing NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Initialization of NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Initialization of the hard disk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

System configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

MS-DOS system configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Parallel DOS commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

4 Printer maintenance

Cleaning the printer and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Using the printer cleaning page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Using the auto-cleaning page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Cleaning spilled toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Performing printer maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Reset maintenance count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Expected life of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

5 Theory of operation

Power supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

AC/DC power distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Overcurrent/overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Fuser over-temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

High-voltage power distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Toner-cartridge detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Cartridge memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Engine controller system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Engine controller board inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Laser/scanner drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Paper-motion monitoring and control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Solenoids, sensors, clutches, and switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Engine test print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

PowerSave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Resolution Enhancement technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Printer memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

4 Contents EN

DIMM slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

PJL overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

PML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Photosensitive drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Writing the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Developing the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Transferring the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

Image fusing/variable fusing temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Paper feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Clutches and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Printing from tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Printing from tray 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Printing from the optional 500-sheet tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Envelope feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Other controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Environmental detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Basic sequence of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

6 Removing and replacing parts

Removal and replacement strategy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

Required tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Other helpful tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Removing covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138

Rear right side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

Top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Left side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Front right side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

Rear cover/rear output bin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

Removing internal assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

Firmware DIMM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

Formatter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

Output delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

Laser/scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154

Cartridge memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155

Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156

Main motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

Transfer roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159

Tray 1 pickup roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

Tray 1 pickup assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161

Right side toner cartridge guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

Registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165

Paper feed assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167

Printer drive assembly (gear train) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169

Delivery drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

Separating the engine module from the paper-feed module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171

Engine controller board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

Paper-feed guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176

Removing tray assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

Paper-feed rollers for trays 2, 3, and 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

EN Contents 5

Separation rollers for trays 2, 3, and 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Tray 2 paper-feed module disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Tray 3 and 4 paper-feed module disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

7 Troubleshooting

Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Troubleshooting flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Troubleshooting flowchart (continued). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Troubleshooting the printing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Preliminary operating checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Power on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Printer messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

General paper-path troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Information pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Image quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Image system troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Reference diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Locations of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

Engine controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

Paper-size detection switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

PCAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

Sensors, switches, and thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Solenoids and clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

8 Parts and diagrams

How to use the parts lists and diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

Accessories and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

Common screws and replacement cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306

Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313

Index

6 Contents EN

Figures

Figure 1. Sample label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Figure 2. Top view, HP LaserJet 4100/4100N/4100TN/4100DTN printer . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 3. Side view, HP LaserJet 4100/4100N printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 4. Side view, HP LaserJet 4100TN/4100DTN printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Figure 5. Control panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Figure 6. Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Figure 7. Location of the transfer roller – Do Not Touch! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Figure 8. Low-voltage power supply circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Figure 9. Engine controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Figure 10. Cartridge memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Figure 11. Engine controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Figure 12. Engine controller board I/O (1 of 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

Figure 13. Engine controller board I/O (2 of 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Figure 14. Engine controller board I/O (3 of 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Figure 15. Engine controller board I/O (4 of 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Figure 16. Engine controller board I/O (5 of 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Figure 17. Main motor control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Figure 18. Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Figure 19. Toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Figure 20. Photosensitive drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Figure 21. Cleaning the drum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Figure 22. Primary charging roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Figure 23. Writing the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Figure 24. Developing the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Figure 25. Transferring the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

Figure 26. Image fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Figure 27. Fusing temperature control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

Figure 28. Paper feed subsystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

Figure 29. Paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Figure 30. Tray 1 pickup timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Figure 31. Tray 1 pickup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Figure 32. Tray 2 pickup timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Figure 33. Skew correction at registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Figure 34. Multiple-feed prevention mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Figure 35. Paper-feeder driver I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Figure 36. Paper feed pickup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Figure 37. Paper path for the duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Figure 38. Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

Figure 39. Comparing Phillips and Posidriv screwdrivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Figure 40. Removing the rear right side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138

Figure 41. Removing the control panel overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

Figure 42. Removing the control panel board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

Figure 43. Disconnecting the toner cartridge drive arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Figure 44. Removing the top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

Figure 45. Releasing tabs to lift the top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

Figure 46. Removing the left side cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

Figure 47. Removing the front right side cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

Figure 48. Removing the rear cover/rear output bin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Figure 49. Removing tray 1 from the front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

Figure 50. Removing the tray 1 sensor arm cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

Figure 51. Detail of the tray 1 sensor arm cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147

Figure 52. Detail of hinge spring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147

Contents 7

Figure 53. Unlocking the fuser assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Figure 54. Installing a firmware DIMM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Figure 55. Removing the formatter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Figure 56. Removing the output delivery assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Figure 57. Left end of output delivery assembly (brass arm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Figure 58. Right end of output delivery assembly (white tab) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Figure 59. Removing the laser/scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Figure 60. Removing the fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Figure 61. Detail of the plastic fan clip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Figure 62. Removing the main motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Figure 63. Removing the transfer roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Figure 64. Removing the pickup roller (shown with envelope entrance cover removed) . . . . . . . . . . . . . . . . 160

Figure 65. Installation of tray 1 pickup roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Figure 66. Removing the gear cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Figure 67. Removing the tray 1 pickup assembly—right side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Figure 68. Removing the tray 1 pickup assembly—left side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Figure 69. Removing the tray 1 pickup assembly—front side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Figure 70. Removing the right side toner cartridge guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Figure 71. Removing the registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Figure 72. Detail of screws for the registration assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Figure 73. Unplugging the connector to the paper feed assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

Figure 74. Removing the upper screws from the paper feed assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 75. Detail of clutch orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Figure 76. Removing the printer drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Figure 77. Removing the delivery drive assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Figure 78. Unplugging the connector to the paper-feed module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Figure 79. Separating the engine from the paper-feed module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Figure 80. Removing the engine controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Figure 81. Removing the engine controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Figure 82. Location of VR501 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Figure 83. Adjusting the top margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Figure 84. Removing the paper feed roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Figure 85. Removing the separation roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Figure 86. Removing the tray 2 paper-feeder plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Figure 87. Removing the paper-feeder plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

Figure 88. Detail of clutch release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Figure 89. Detail of spring and lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Figure 90. Location of spring and lever (the paper feeder is inverted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Figure 91. Troubleshooting flowchart (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Figure 92. Troubleshooting flowchart, continued. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Figure 93. Location of the engine test button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Figure 94. Sample event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Figure 95. Sample menu map (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Figure 96. Sample menu map (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Figure 97. Sample configuration page (HP LaserJet 4100 series printer). . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Figure 98. Repetitive print defect ruler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Figure 99. Components of the paper pickup and feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Figure 100. Components of the optional paper feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Figure 101. Components of the optional duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Figure 102. Components of the fusing and delivery unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Figure 103. Components of the optional envelope feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Figure 104. Paper sensors and the paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

Figure 105. Engine controller board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

Figure 106. Paper-size detection switches (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Figure 107. Paper-size detection switches (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Figure 108. Location of motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

Figure 109. Connectors (1 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Figure 110. Connectors (2 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

Figure 111. Connectors (3 of 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

8 Figures EN

Figure 112. Location of PCAs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261

Figure 113. Location of sensors, switches, and thermistors (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263

Figure 114. Location of sensors, switches, and thermistor (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264

Figure 115. Location of solenoids and clutch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266

Figure 116. Pickup timing for tray 2 (and lower trays) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268

Figure 117. Pickup timing for tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268

Figure 118. Assembly location diagram (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274

Figure 119. Assembly location diagram (2 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275

Figure 120. External covers and panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .277

Figure 121. Top cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278

Figure 122. Internal components (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280

Figure 123. Internal components (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .282

Figure 124. Internal components (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284

Figure 125. Internal components (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

Figure 126. Engine controller board assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288

Figure 127. Delivery drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .289

Figure 128. Printer drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290

Figure 129. Tray 2 paper pickup guide assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .291

Figure 130. Tray 1 pickup assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .292

Figure 131. Paper feed guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294

Figure 132. Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295

Figure 133. Fuser assembly (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .296

Figure 134. Fuser assembly (2 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297

Figure 135. Internal components of optional 500-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298

Figure 136. Paper pickup guide assembly of optional 500-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300

Figure 137. 500-sheet tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .302

Figure 138. Envelope feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303

Figure 139. Internal components of duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304

EN Figures 9

10 Figures EN

Tables

Table 1. Printer features for the HP LaserJet 4100 series printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Table 2. Product compatibility matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Table 3. Electrical specifications for the HP LaserJet 4100 series printers . . . . . . . . . . . . . . . . . . . . . . . . . .21

Table 4. Printer and toner cartridge environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Table 5. Operating sound power or pressure (Per ISO 9296). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Table 6. Print media specifications, tray 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Table 7. Print media specifications, trays 2, 3, and 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Table 8. Print media specifications, optional envelope feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Table 9. Print media specifications, optional duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Table 10. Weight equivalence table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Table 11. Adhesive labels specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Table 12. Overhead transparencies specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Table 13. Envelope specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Table 14. Paper specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Table 15. Printer documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Table 16. Control panel lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Table 17. Control panel keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Table 18. Settings and defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Table 19. Quick copy jobs menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Table 20. Private/stored jobs menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Table 21. Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Table 22. Paper handling menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Table 23. Printing menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Table 24. Print quality menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Table 25. Configuration menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Table 26. I/O menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Table 27. EIO menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Table 28. Resets menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Table 29. Changing the page count (example). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Table 30. Cleaning the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Table 31. Maintenance kit part numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Table 32. Life of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Table 33. Printer timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Table 34. Screws used in the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137

Table 35. Major steps for troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Table 36. Power on defect or blank display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188

Table 37. Printer messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

Table 38. Mopy disk error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218

Table 39. General paper-path troubleshooting questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220

Table 40. Image quality checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .228

Table 41. Weights of toner cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .228

Table 42. Image defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .231

Table 43. High voltage system checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245

Table 44. Components of the paper pickup and feed system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247

Table 45. Paper sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .252

Table 46. Engine controller board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .254

Table 47. Paper-size detection switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .256

Table 48. Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .257

Table 49. Location of PCAs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262

Table 50. Sensors, switches, and thermistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264

Table 51. Solenoids and clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267

Table 52. Accessories and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271

Contents 11

Table 53. Screws used in the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Table 54. Replaceable cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

Table 55. Assemblies (listed alphabetically) and their part numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

Table 56. External covers and panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

Table 57. Top cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

Table 58. Internal components (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

Table 59. Internal components (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Table 60. Internal components (3 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Table 61. Internal components (4 of 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Table 62. Engine controller board assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Table 63. Delivery drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Table 64. Printer drive assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290

Table 65. Paper pickup guide assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

Table 66. Tray 1 pickup assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293

Table 67. Paper feed assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294

Table 68. Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295

Table 69. Fuser assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296

Table 70. Internal components of optional 500-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

Table 71. Paper pickup guide assembly, optional 500-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301

Table 72. 500-sheet tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302

Table 73. Envelope feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303

Table 74. Internal components of duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Table 75. Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306

Table 76. Numerical parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313

12 Tables EN

1

Printer description

Chapter contents

Printer features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Product compatibility matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Site requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Installation requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Environmental requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Print media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Supported types of print media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Types of print media to avoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Weight equivalence table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Adhesive labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Overhead transparencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Envelopes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Card stock and heavy paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Laser safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Chapter 1 Printer description 13

Printer features

Table 1. Printer features for the HP LaserJet 4100 series printers

Models

HP LaserJet 4100 (C8049A):

25 pages per minute (ppm) for letter-size paper, and 24

!

ppm for A4-size paper
16 megabytes (MB) random-access memory (RAM)

!

600-sheets input capacity

!

HP LaserJet 4100N (C8050A):

Base unit plus the following:

16 MB RAM (32 MB total)

!

10/100BaseT card

!

HP LaserJet 4100TN (C8051A):

Base unit plus the following:

16 MB RAM (32 MB total)

!

10/100BaseT card

!

One 500-sheet feeder (1100-sheet input capacity)

!

HP LaserJet 4100DTN (C8052A):

Base unit plus the following:

16 MB RAM (32 MB total)

!

10/100BaseT card

!

One 500-sheet feeder (1100-sheet input capacity)

!

Duplex printing accessory

!

Accessories

Speed

Stackable 500-sh eet feeder with XY size capability

!

Duplex printing accessory

!

75-sheet envelope feeder

!

4, 8, 16, 32, 64, and 128 MB dual inline memory

!

modules (DIMMs)
2 and 4 MB flash DIMMs

!

LocalTalk/Universal Serial Bus (USB)/Serial and Token

!

Ring EIO cards
Infrared adapter

!

Enhanced input/output (EIO) hard disk drive

!

HP Print to Mail (not available in all regions)

!

25 ppm for letter-size paper, and 24 ppm for A4-size

!

paper
RIP ONCE (rasterized image processing) capability

!

with 16 MB or hard-disk options for faster product ion
First page out = 12 seconds

!

250 MHz RISC processor

!

14 Printer description EN

Table 1. Printer features for the HP LaserJet 4100 series printers (continued)

Resolution The printer prints true 1200 dpi and supports the following:

HP ProRes 1200 at full engine speed (PCL6 and PS)—

!

produces 1200-dpi printing for th e best quality of
graphic images

HP FastRes 1200 (PCL6 only)—produces emulated

!

1200-dpi print quality for fast, high-quality printing of
business text and graphics

600 dpi with PCL5e and PS

!

300 dpi with PCL5e and HP PostScriptTM Level 3

!

emulation (PS)

Typefaces/fonts 110 Scalable TrueType

FontSmart, all PCL and PS accessible)

Memory Standard Memory:

HP LaserJet 4100: 16 MB synchronous dynamic

!

random access memory (SDRAM) standard (installed
on a DIMM)

HP LaserJet 4100N/4100TN/4100DTN: 32 MB SDRAM

!

standard (installed on a DIMM)

Optional Memory:

4, 8, 16, 32, 64, and 128 MB SDRAM DIMM

!

Expandable memory (up to 256 MB) using three DIMM

!

slots

Mass storage options

Interface

2 and 4 MB flash DIMMs

!

2 gigabyte (GB) or larger EIO hard disk

!

Bidirectional (IEEE-1284-compliant) parallel interface

!

Paper-handling connector (PHC)

!

10/100Base-TX Fast Ethernet (4100N/4100TN/

!

4100DTN)

TM

(80 built-in, 30 with HP

Optional networking

Enhanced input/output (EIO)—HP JetDirect EIO

!

internal print se rver network cards
Token Ring (EIO) network cards

!

Fast Ethernet (10/100Base-TX single RJ-45 port)

!

HP JetDirect Connectivity card (EIO) for USB, Serial,

!

LocalTalk

Expansion slots

Three 100-pin DIMM slots

!

Two EIO slots

!

EN Chapter 1 Printer description 15

Table 1. Printer features for the HP LaserJet 4100 series printers (continued)

Paper trays 100-sheet tray 1

Standard and custom sizes: from 76 by 127 mm (3 by 5

!

inches) to 216 by 356 mm (8.5 by 14 inches)

500-sheet tray 2

Letter: 216 by 279 mm (8.5 by 11 inches)

!

A4: 210 by 297 mm (8.3 by 11.7 inches)

!

Executive: 191 by 267 mm (7.3 by 10.5 inches)

!

Legal: 216 by 356 mm (8.5 by 14 inches)

!

B5 (JIS): 182 by 257 mm (7.2 by 10 inches)

!

A5: 148 by 210 mm (5.8 by 8.2 inches)

!

Custom sizes: from 148 by 210 mm (5.8 by 8.2 in) to

!

216 by 356 mm (8.5 by 14 in)

500-sheet tray 3 (HP LaserJet 4100TN/4100DTN)

Letter: 216 by 279 mm (8.5 by 11 inches)

!

A4: 210 by 297 mm (8.3 by 11.7 inches)

!

Executive: 191 by 267 mm (7.3 by 10.5 inches)

!

Legal: 216 by 356 mm (8.5 by 14 inches)

!

B5 (JIS): 182 by 257 mm (7.2 by 10 inches)

!

A5: 148 by 210 mm (5.8 by 8.2 inches)

!

Custom sizes: from 148 by 210 mm (5.8 by 8.2 in) to

!

216 by 356 mm (8.5 by 14 in)

Optional 500-sheet tra y

Letter: 216 by 279 mm (8.5 by 11 inches)

!

A4: 210 by 297 mm (8.3 by 11.7 inches)

!

Executive: 191 by 267 mm (7.3 by 10.5 inches)

!

Legal: 216 by 356 mm (8.5 by 14 inches)

!

B5 (JIS): 182 by 257 mm (7.2 by 10 inches)

!

A5: 148 by 210 mm (5.8 by 8.2 inches)

!

Custom sizes: from 148 by 210 mm (5.8 by 8.2 in) to

!

216 by 356 mm (8.5 by 14 in)

Paper pat h Straight-through paper path available.

Output capacity

Input capacity

250-sheet top output bin (with bin-full sensor)

!

50-sheet rear output bin

!

HP LaserJet 4100 and 4100N: hold 600 sheets of

!

paper.
HP LaserJet 4100TN and 4100DTN: hold 1,100 sheets

!

of paper.
Expandable to hold up to 1,600 sheets of paper with

!

optional 500-sheet tray(s); also holds envelopes.

Media handling options

Duplexer

!

Envelope feeder (up to 75 envelopes)

!

500-sheet tray

!

HP Print to Mail (not available in all regions)

!

Media weights See page 25 through page 27.

16 Printer description EN

Table 1. Printer features for the HP LaserJet 4100 series printers (continued)

HP genuine toner
cartridge

No-shake cartridge design.

!

HP UltraPrecise toner for crisp, sharp output.

!

Supplies status page—provides information about the

!

toner gauge, page count, and paper sizes used in the
printer.

Printer languages

HP PCL6

!

HP PCL5e

!

PostScript 3 emulation

!

Automatic language switching

!

Duty cycle Up to 150,000 pages per month.

Expanded support
capabilities

Embedded Web server provides remote access and status
information.

EN Chapter 1 Printer description 17

Product compatibility matrix

Table 2. Product compatibility matrix

HP LaserJet printer series:

Product Part number 4000 4050 4100

Envelope feeder C4122A

C8053A

Duplex printing accessory (duplexer) C4123A

C8054A

Toner cartridges
6,000 pages
10,000 pages
6,000 pages
10,000 pages

C4127A
C4127X
C8061A
C8061X

Paper trays

500-sheet paper feeder and tray
500-sheet paper feeder and tray
500-sheet replacement tray
500-sheet replacement tray
500-sheet standard replacement tray
250-sheet standard replacement tray

C4124A
C8055A
C4125A
C8056A
C3122A
C4126A

!
!

!
!

!
!
!
!

1

!

1

!

1

!

1

!

3

!

1

!

1.

A5 size is detected as
custom size.

2.

A5 size is detected as

!
!!

!
!!

!
!
!
!

1

!

1

!

1

!

1

!

3

!

1

!

!
!
!
!
!

custom size; larger custom
sizes might be detected as
A5 size.

3.

Supports only letter, A4,
and legal sizes.

!
!

2

a

2

a

3

18 Printer description EN

Table 2. Product compatibility matrix

HP LaserJet printer series:
Product Part number 4000 4050 4100
Memory

4 MB extended data out (EDO) DIMM
8 MB EDO DIMM
16 MB EDO DIMM
4 MB SDRAM DIMM
8 MB SDRAM DIMM
8 MB SDRAM DIMM
16 MB SDRAM DIMM
16 MB SDRAM DIMM
24 MB SDRAM DIMM
32 MB SDRAM DIMM
32 MB SDRAM DIMM
64 MB SDRAM DIMM
64 MB SDRAM DIMM
128 MB SDRAM DIMM
2 MB flash DIMM
4 MB flash DIMM

Font DIMMs

Traditional Chinese font DIMM (8 MB
Asian read-only memory [ROM])
Simplified Chinese font DIMM (8 MB
Asian ROM)
Korean font DIMM (8 MB Asian ROM)

C4135A
C4136A
C4137A
C4140A
C4141A
C7842A
C4142A
C7843A
C7844A
C4143A
C7845A
C3913A
C7846A
C9121A
C4286A
C4287A

C4292A
C4293A
D4838A

!
!
!
!
!
!
!
!
!
!
!
!
!

!
!

!

!

!

!
!
!
!
!
!
!
!
!
!

!
!

!

!

!

!
!
!
!
!
!
!
!
!
!
!
!
!

!

!

!

Jet Direct EIO cards

Ethernet RJ-45 only
Ethernet RJ-45 and BNC, LocalTalk
Token Ring
10/100Base-TX
USB, LocalTalk, and Serial

Fast infrared receiver (FIR) pod C4103A
EIO hard disk C2985B
Preventive maintenance kits, user

installable (consumable)
110 V kit
220 V kit
110 V kit
220 V kit

J3110A
J3111A
J4167A
J4169A
J4135A

C7851A
C7852A
C8057A
C8058A

!
!
!
!
!

!!!

!
!

!
!
!
!
!

!!

!
!

!
!
!
!
!

!
!

EN Chapter 1 Printer description 19

Identification

Model and serial numbers

The model number and printer serial number are listed on an identification label located under the
top cover on the right side of the printer. The model number is alphanumeric, such as C8049A for the
HP LaserJet 4100 printer.

The serial number contains information about the coun try of origin, the revision level, the production
code, and production number of the printer. An example of a serial num ber is USBB123456.

The label also contains power rating and regulatory information as shown in figure 1.

Figure 1. Sample label

20 Printer description EN

Site requirements

The following en vir onmental specificat ions must be mainta ined to ensure the co rrect oper ation of the
printer. Consider the following points before installing the printer:

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

!

Install on a hard, flat, continuous surf ace , with all f our printer feet level. Do not install on carpet or

!

other soft surfaces.
Ensure adequate power is supplied. Printer power requirements are listed in table 3.

!

Uninterruptable power supplies (UPSs) are not recommended.
Install where temperature and humidity are stable, away from water sources, humidifiers, air

!

conditioners, refrigerators, or other major appliances. See table 4 for temperature and humidity
ranges.

Install away from direct sunlight, open flames, or ammonia fumes. If the printer is placed near a

!

window, make sure the window has a curtain or blind to block direct sunlight.
Install with enough space around the printer for access and ventilation.

!

Install away from the direct flow of exhaust from air ventilation systems.

!

Table 3. Electrical specifications for the HP LaserJet 4100 series printers
Volts Frequency Circuit Capacity Watts (W) (typical)

100-127 VAC±10% 50/60 Hz ± 3 Hz Minimum

recommended =
10 amps

220-240 VAC±10% 50/60 Hz ± 3 Hz Minimum

recommended =
5 amps

printing = 450 W
standby = 19 W
PowerSave on = 18 W
(EPA E

NERGY STAR

®

)

printing = 450 W
standby = 19 W
PowerSave on = 18 W
(EPA E

NERGY STAR

®

)

EN Chapter 1 Printer description 21

Installation requirements

Install the printer with enough space around it to open trays and bins, install toner, and perform
maintenance. If the duple xer is installed, the printer needs 101 mm (4 inches) of ventilation space on
the left side (fan side) and rear of the printer.

390 mm

(15.4 inches)

1043 mm (41.1 inches)

Figure 2. Top view, HP LaserJet 4100/4100N/4100TN/4100DTN printer with trays and rear output bin

open

Figure 3. Side view, HP LaserJet 4100/4100N printer

345 mm

top cover closed

(13.6 inches) with

475 mm

top cover open

(18.7 inches) with

22 Printer description EN

465 mm

Figure 4. Side view, HP LaserJet 4100TN/4100DTN printer

Printer weight (without toner cartridge)

HP LaserJet 4100/4100N printers: 18 kg (39 lb)

!

HP LaserJet 4100TN printer: 25 kg (55 lb)

!

HP LaserJet 4100DTN printer: 28 kg (62 lb)

!

595 mm

top cover open

cover closed

(18.3 inches) with top

(23.4 inches) with

EN Chapter 1 Printer description 23

Environmental requirements

Table 4. Printer and toner cartridge environmental conditions
Item Operating Storage

Temperature 10

° to 32°

C (50 to 91° F) Toner cartridge:

0

to 35°C (32 to 95° F)

°

Printer:

-20 to 60°C (-4

Relative humidity 20 to 80 percent relative

10 to 95 percent RH
humidity (RH) (with no
condensation)

Table 5. Operating sound power or pressure (Per ISO 9296)

Sound power level L

Operating position L

Bystander position L

= 6.6 Bels (A) printing, L

WAd

= 58 dB (A) printing, L

pAm

= 52 dB (A) printing, L

pAm

= 4.1 Bels (A) idle

WAd

= 32 dB (A) idle

pAm

= 26 dB (A) idle

pAm

Note Testing per International Standards Organization (ISO) 9296/7779

to 140° F)

°

24 Printer description EN

Print media specifications

The following tables show print media specifications for the HP LaserJet 4100 series printer.

Table 6. Print media specifications, tray 1

Supported
media Dimensions

Minimum size
(custom

Maximum size
(custom

3

)

3

)

76 by 127 mm
(3 by 5 inches)

216 by 356 mm
(8.5 by 14 inches)

Transparencies Same as minimum

and maximum paper

sizes listed above

1

Weight Capacity

60 to 199 g/m

2

100 sheets of 75 g/m

(16 to 53 lb)

Thickness:

2

2

(20 lb) paper

50 transparencies

0.10 to 0.11 mm
(0.0039 to

0.0043 inch)

Labels Thickness:

50 labels

0.13 to 0.18 mm

(0.005 to 0.007

inch)

Envelopes 75 to 105 g/m

2

10 envelopes

(20 to 28 lb)

1.

The printer supports a wide range of print media sizes. Check the printer software for

supporte d sizes. To prin t cu sto m -size media, see th e user guide.

2.

Capacity can vary depending on media weight and thickness, and environmental conditions.

3.

Custom media must be fed short-edge first (portrait).

EN Chapter 1 Printer description 25

Table 7. Print media specifications, trays 2, 3, and 4

Supported
media Dimensions

1

Letter 216 by 279 mm

(8.5 by 11 inches)

A4 210 by 297 mm

(8.3 by 11.7 inches)

Executive 191 by 267 mm

(7.3 by 10.5 inches)

Executive (JIS)
(custom

3

)

16K (custom

216 by 330 mm
(8.5 by 13 inches)

3

) 197 by 273 mm

(7.75 by 10.75
inches)

Legal 216 by 356 mm

(8.5 by 14 inches)

B5 (ISO)
(custom

B5 (JIS)

A5

3

)

176 by 250 mm
(6.9 by 9.9 inches)

182 by 257 mm
(7.2 by 10 inches)

148 by 210 mm
(5.8 by 8.2 inches)

Weight Capaci ty

60 to 105 g/m

2

(16 to 28 lb)

500 sheets of 75 g/m

(20 lb) paper or

50 transparencies

2

2

148 by 210 mm

Custom

3

to 216 by 356 mm
(5.8 by 8.2 inches to

8.5 by 14 inches)

1.

The printer supports a wide range of print media sizes. Check the printer software for

supporte d sizes. To prin t cu sto m -size media, see th e user guide.

2.

Capacity can vary depending on media weight and thickness, and environmental conditions.

3.

Custom media must be fed short-edge first (portrait).

Table 8. Print media specifications, optional envelope feeder

Supported
envelope Dimensions Weight Capacity

Monarch
(#7 3/4)

Commercial 10
(#10)

DL ISO 110 by 220 mm

98.4 by 190.5 mm
(3.88 by 7.50 inches)

104.9 by 241.3 mm
(4.13 by 9.5 inches)

(4.33 by 8.66 inches)

75 to 105 g/m2

(20 to 28 lb)

1

75 envelopes

C5 ISO 162 by 229 mm

(6.38 by 9.02 inches)

B5 ISO 176 by 250 mm

(6.93 by 9.84 inches)

1.

Capacity can vary depending on media weight and thickness, and environmental conditions.

26 Printer description EN

Table 9. Print media specifications, optional duplexer

Supported
media Dimensions Weight

Letter 216 by 279 mm

(8.5 by 11 inches)

A4 210 by 297 mm

(8.3 by 11.7 inches)

Executive 184 by 267 mm

(7.3 by 10.5 inches)

Legal 216 by 356 mm

(8.5 by 14 inches)

B5 (JIS) 182 by 257 mm

(7.2 by 10 inches)

60 to 105 g/m2

(16 to 28 lb)

EN Chapter 1 Printer description 27

Supported types of print media

The printer supports the following types of print media:

plain

!

letterhead

!

prepunched

!

bond

!

color

!

rough

!

preprinted

!

transparency (see page 32)

!

labels (see page 31)

!

recycled

!

card stock

!

Note Transparencies and labels must be specified for use in laser printers.

28 Printer description EN

Types of print media to avoid

The following characteristics can affect the performance of th e HP L aserJe t print er un less t he pap er
or other print media used is specifically designed to work with the HP LaserJet printer.

Print media that is very rough, highly textu red, or heavily embossed.

!

Print media with multipart forms.

!

Print media that offsets materials or discolors.

!

Print media that is damaged, curled, wrinkled, or irregularly shaped.

!

Paper that is extremely shiny or glossy.

!

Paper, labels, envelopes, or transparencies that produce undesirable emissions or melt when

!

exposed to a fusing temperature between 175° to 230° C (347° to 446° F) for 0.1 second.
Media coatings, dyes, or inks that produce undesirable emissions or melt when exposed to a

!

fusing temperature between 175° to 230° C (347° to 446° F) for 0.1 second.
Envelopes that have an open flap with the adhesive exposed so that closing the flap seals the

!

envelope.
Envelopes with clasps, snaps, tie strings, windows, or synt hetic materials. These materials can

!

severely damage the printer.
Envelopes that are not square, straight, or constructed correctly (see "Envelope constructi on" on

!

page 33).
Envelopes with a basis weight less than 60 g/m2 (16 lb) or greater than 105 g/m2 (28 lb).

!

Envelopes with baggy construction or folds that are not sharply creased.

!

Note Some media types might not w ork in the printer because of diff erences in man uf acturer specifications

or environmental conditions.

EN Chapter 1 Printer description 29

Weight equivalence table

The following table shows equivalent weights for different grades of paper. A boldface type value
indicates a commonly available standard weight for that grade. Shaded boxes indicate a commonly
available standard weight for that grade.

Note Text and book grades marked with an asterisk (*) actually calculate to 51, 61, 71, and 81 but are

rounded to standard book or text weights of 50, 60, 70, and 80.

Table 10. Weight equivalence table

Bond
weight
(17 by 22
inches)

16# 41# 22# 27# 33# 37# 60 g/m
17# 43# 24# 29# 35# 39# 64 g/m
20# 50# * 28# 34# 42# 46# 75 g/m
21# 54# 30# 36# 44# 49# 80 g/m
24# 60# * 33# 41# 50# 55# 90 g/m
27# 68# 37# 45# 55# 61# 100 g/m
28# 70# * 39# 49# 58# 65# 105 g/m
29# 74# 41# 50# 61# 68# 110 g/m
32# 80# * 44# 55# 67# 74# 120 g/m
36# 90# 50# 62# 75# 83# 135 g/m
39# 100# 55# 67# 82# 91# 148 g/m
40# 101# 55# 68# 83# 92# 150 g/m
43# 110# 60# 74# 90# 100# 163 g/m
45# 115# 63# 77# 94# 104# 170 g/m
47# 119# 65# 80# 97# 108# 176 g/m
51# 128# 70# 86# 105# 117# 190 g/m
53# 134# 74# 90# 110# 122# 199 g/m
54# 137# 75# 93# 113# 125# 203 g/m
58# 146#
65# 165# 90# 111# 135# 150# 244 g/m
66# 169# 92# 114# 138# 154# 250 g/m
67# 171# 94# 115# 140# 155# 253 g/m
70# 178# 98# 120# 146# 162# 264 g/m
72# 183# 100# 123# 150# 166# 271 g/m

Book/text
weight
(25 by 38
inches)

Cover
weight
(20 by 26
inches)

80# 98# 120# 133# 216 g/m

Bristol
weight
(22.5 by 28.5
inches)

Index
weight
(25.5 by 30.5
inches)

Tag
weight
(24 by 36
inches)

Metric
weight

2
2
2
2
2

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

30 Printer description EN

Adhesive labels

When printing on labels, use of tray 1 is recommended. Labels are multiple-layer media typically
consisting of a face sheet (the printable surface), pressure-sensitive adhesive, and a liner (a carrier
sheet coated with a release agent). Labels used in the HP LaserJet printer must be specifically
designed for laser printers . If labels othe r than those comp atib le with laser printers are used, there is
a significant risk of labels peeling or of adh esiv e conta mination that can severely damage the printer .
All materials in laser label stock must be compatib le with the hea t and pressure of the fu sing process .

The table below summarizes the adhesive label specifications that provide the best performance.

Table 11. Adhesive labels specifications

Property Specifications

Adhesive Must not be on any external surfaces of the label before,

during, or after printing. Label construction, adhesive
release strength, and die-cutting must not allow labels to

peel off during printing.
Caliper (thickness) Must not exceed 0.23 mm (9.0 mils).
Fusing compatibility All inks, adhesives, and other materials used in the label

construction must be compatible with the heat and

pressure of the fusing process. Materials must not scorch,

melt, ignite, offset materials, or release unde sirable

emissions when heated to a temperature between

175° to 230° C (347° to 446° F) for 0.1 second.
Packaging Adhesive labels should be packaged in moisture-proof

wrap to preserve properties.
Shelf life One year maximum, stored at 23° C (73° F) and 50

percent RH.

EN Chapter 1 Printer description 31

Overhead transparencies

When printing transparencies, use of tray 1 is recommended. Overhead transparency film must be
designed specifically for use with laser printers. Photocopy tr ansparency film might not be
compatible with laser printers because of higher temperature and stiffness requirements.

Overhead transparency film is very smooth and must have a topcoat to provide the proper electrical
and toner adhesion properties. A transparency that is made of poor materials or that is too thin can
easily melt in the fuser and damage the printer.

Overhead transparency materials must be compatible with the heat and pressure of the fusing
process.

The table below summarizes the overhead transparency specifications that provide the best
performance.

Table 12. Overhead transparencies specifications

Property Specifications

Caliper (thickness) 0.10 mm to 0.11 mm (4.0 mils to 4.4 mils).
Electrical surface

resistivity
Fusing compatibility Overhead transparency materials must be compatible with

2.0 to 15 by 10

the heat and pressure of the fusing process. Materials
must not discolor, melt, offset materials, or release
undesirable emissions when heated to a temperature
between 175° to 230° C (347° to 446° F) for 0.1 second.

10

ohms/square.

32 Printer description EN

Envelopes

Envelope construction

Envelopes can only be printed from tray 1 or from the optional envelo pe feeder. Because of their
construction, some envelopes will not feed through the printer dependably. Observe the following
guidelines when purchasing and using env elop es:

Make sure the envelope’s leading edge, which enters the printer first, is straight, with a sharp,

!

well-creased fold that has no more than two thicknesses of paper. Envelopes that exceed
105 g/m

Avoid using flimsy envelopes with thick or curved leading edges; they will not feed reliably.

!

Envelopes should lie flat and should not be wrinkled, nicked, or otherwise da maged.

!

Avoid envelopes with baggy construction; they might wrinkle while going through the printer’s

!

fuser assembly.
Make sure that the adhesive labels used on envelopes will not scorch, melt, offset, or release

!

undesirable emissions when heated to a temperature between 175° to 230° C (347° to 446° F)
for 0.1 second.

Av oid usin g en v elopes with encapsulat ed adhesiv es th at rely on pressu re ra ther than moist ening

!

to seal.
Do not use envelopes with clasps, snaps, tie strings, transparent windows, holes, perforations, or

!

cutouts.
Do not use envelopes that have any ad h esive surfaces exposed to the printer.

!

Woven or smooth finishes are recommended to ensure good toner adhesion on envelopes.

!

2

(28 lb) basis weight can cause jamming.

Many envelopes will feed through the HP LaserJet printer without problems. However, some
envelope constructions (as shown in the figure below) will not feed reliably. Problems can occur
when the envelopes are folded more tightly than no rmal, causing a thick leading edg e near a corner .
Folding inconsistencies at the manufacturer can cause some envelopes to feed well and others to
jam.

Good construction Bad construction

EN Chapter 1 Printer description 33

Envelope specifications

The table below summarizes the envelope specifications that provide the best performance.

Table 13. Envelope specificati ons

Property Specifications

Basis weight 64 g/m

See the user guide for specific printer and input limits.

Caliper (thickness) 0.09 mm to 0.14 mm (3.6 mil to 5.5 mil) typical single-layer

thickness.
Surface roughness 100 to 200 Sheffield.
Fusing compatibility All inks, adhesives, and other materials used in the

envelope const ruction must be compatible with the heat

and pressure of the fusing process. Materials must not

scorch, melt, ignite, offset materials, or release

undesirable emissions when heated to a temperature

between 175° to 230° C (347° to 446° F) for 0.1 second.

2

to 105 g/m2 (17 lb to 28 lb) typical.

Dimensional accuracy
and construction quality

Envelopes m ust be f olded within ±1.0 mm (±0.04 inch)

!

of nominal size with no more than two thickness of
paper anywhere along the leading edge.

All folds must be sharply creased and construction

!

must be tight (not baggy) to avoid wrinkling.
Envelopes must not be stuck together from excess

!

seam adhesive (blocking).
The flap must be flat within 1.5 mm (0 .059 in ) o ver the

!

width where adhesive is applied.

Curl Envelopes must lie flat, with no more than 6 mm (0.25

inch) curl across the entire surface.
Adhesive flap curl Envelope flap should be flat, with 1.5 mm (0.059 inch)

over the width where adhesive is applied.
Moisture content 4 percent to 6 percent by weight.
Grain Different envelope constructions might require different

grain orientations f or best perf ormance, which is le ft to the

discretion of the manufacturer.
Packaging Envelopes should be contained in a protective box to

prevent edge damage and maintain flatness.

34 Printer description EN

Card stock and heavy paper

Many types of card stoc k an d pa pe r can be p rinted from t r ay 1, including index cards and postcards.
For optimum printer performance, do not use paper heavier than 199 g/m

105 g/m

2

(28 lb) in other trays. Paper that is too heavy might cause misfeeds, stacking problems,

jams, poor toner fusing, poor print quality, or excessive mechanical wear.

Note Before loading card stoc k, make sure it is regular in shape and not damaged or wrinkled. Also, make

sure the cards are not stuck together.
The table below summarizes the paper specifications that provide the best performance.

Table 14. Paper specifications

Property Specifications

Basis weight 64 g/m

2

to 105 g/m2 (17 lb to 28 lb) typical.

See the user guide for specific printer and input limits.

Caliper (thickness) 0.09 mm to 0.17 mm (3.5 mil to 6.5 mil) typical.

See the user guide for specific printer and input limits.

Minimum stiffness 1.2 minimum (Taber) machine direction;

0.8 minimum (Taber) cross direction.

Grain Portrait feeding: short or long grain up to 36 lb.

Landscape feeding: long grain.

Electrical surface

9

10

to 1013 ohms/square.

resistivity

9

Electrical volume

to 1014 ohms - cm.

10

resistivity
Surface roughness 100 to 190 Sheffield optimal;

30 to 350 Sheffield extended (fusing or feeding
performance can be degraded at outer ranges).

Fusing compatibility Must not scorch, melt, ignite, offset materials, or release

undesirable emissions when heated to a temperature
between 175° to 230° C (347° to 446° F) for 0.1 second.

2

(53 lb) in tray 1 or

Furnish (composition) One hundred percent chemical pulp and/or cotton con tent;

recycled paper with up to 5 percent groundwood can be

used.
Dimensional accuracy Cut sheet within ±0.80 mm (±0.03 inch) of nominal.
Cut edge quality Cuts must be smooth and clean with no fray or edge roll.
Curl Must lie flat within 5 mm (0.2 inch).
Moisture content 4 percent to 6 percent by weight.
Packaging Card stock and heavy paper should be packaged in a

moisture-proof ream wrap.
Wax pick 12 minimum (Dennison).

EN Chapter 1 Printer description 35

Safety information

Toner safety

Handling and storage

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

If toner is spilled, avoid breathing in toner particles. Inhalation of toner particles can cause
respiratory tract irritation. Vacuum or sweep the material into a bag or other sealed contai ner. If a
vacuum is used, the motor must be rated as dust-tight.

Dispose of waste toner in accordance with local requirements. Do not discharge toner particles in
drains.

First aid measures

Ingestion. If toner is ingested, drink sever al glasses of w ater. Get medical attention if discomfort

!

persists.
Inhalation. If toner particles are inhaled, move to fresh air immediatel y. If symptoms occur (such

!

as coughing, dizziness, or difficulty breathing), consult a physician.
Eye contact. If toner comes in contact with the ey es , immediate ly flush with plenty of w ater for at

!

least 15 minutes. If irritation persists, consult a physician.
Skin contact. If toner spills on skin, remove as much toner as possible with a dry tissue, and

!

then wash with cold water.

Clothing contact

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

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

with cold water. Air-dry clothing.

Additional information

The Toner Cartridge/Drum Material Safety Data Sheet (MSDS) can be obtained by contacting HP at
the following website:
http://www.ljsupplies.com

36 Printer description EN

Laser safety

Do not open the laser scanner assembly. Avoid direct exposure to the laser beams.

WARNING! Using controls, making adjustments , b ypassing saf ety s witches , or perf orming procedures oth er than

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

Regulatory information

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

EN Chapter 1 Printer description 37

38 Printer description EN

2

Service approach

Chapter contents

Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Parts and supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Printer documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

HP direct ordering for genuine HP parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Exchange program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Consumables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

World Wide Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

HP service parts information compact disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

HP support assistant compact disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Toner cartridge information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Warranty statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Printer warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Limited warranty for toner cartridge life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

EN Chapter 2 Service approach 39

Service approach

Repair of the printer normally begins with use of the printer’s internal diagnostics in conjunction with
the troubleshooting procedures in chapter 7. When a faulty part is located, repair is generally
accomplished by assembly-level replacement of field-replaceable units (FRUs). Some mechanical
assemblies might be repaired at the subassembly level. Hewlett-Packard does not support
replacement of components on printed circuit boards.

Parts and supplies

Ordering information

Chapter 8 of this manual contains FRU and accessory part numbers. Replacement parts can be
ordered from the HP Customer Services and Support Organization.

Use only accessories specifically designed for this printer. Order accessories from an authorized
service or support provider. (See page 42.)

40 Service approach EN

Printer documentation

The table below lists part numbers to use when ordering documentation. For information about
ordering, see page 42.

Note Some of the materials listed in table 15 are also available online at http://www.hp.com.

Table 15. Printer documentation
Item Description or use Part number

HP LaserJet Printer Family
Print Media Guide

PCL 5/PJL Technical
Reference Documentation
Package

HP LaserJet Basics
CD-ROM

User Getting Started Guide,
HP LaserJet 4100 Series
Printers

HP LaserJet 4100 Series
Printers User Documentation
CD-ROM

HP LaserJet 4100 Series
Printers Software Technical
Reference

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

A guide to using printer
commands with HP LaserJet
printers

A guide to using HP LaserJet
printer hardware

An additional copy of the user
getting started guide

An additional copy of the user
documentation CD-ROM

A guide to the printer software C8049-90921

5963-7863
(English only)

5021-0330
(English only)

H8789A
(English only);
online at: http://
software.hp.com

C8049-90903
(English only)

C8049-60104
(English only)

(English only)

Service and Support CD­ROM for the
HP LaserJet 4100 Series
Printers

HP LaserJet 4100 Series
Printers Service Manual

HP LaserJet 4100 Series
Printers Training Kit

EN Chapter 2 Service approach 41

An interactive training CD­ROM for printer service
representatives and custom er
care specialists

A service manual for the 4100
printer series.

Includes service manual and
service and suppo rt CD-ROM

C8049-60116
(English only)

C8049-90920
(English only)

C8049-67901
(English only)

HP direct ordering for genuine HP parts

Customer Services and Support Organization (CSSO):

(1) [phone] (U.S. only)

!

(49 7031) 142253 (Europe only)

!

See chapter 8 for additional information.

!

Exchange program

HP offers remanufactured assemblies for som e pa rts. These are identified in chap te r 8 and can be
ordered through CSSO.

Consumables

Paper and ton er cartridges can be ordered directly from Hewlett-Packard. See chapter 8 for o rdering
information.

World Wide Web

Printer drivers, updated HP printer software, and product and support information can be obtained
from the following URL:
in the U.S., http://www.hp.com/suppor t/ lj41 00

Printer drivers can be obtained from the following sites:
in China, ftp://www.hp.com.cn/support/lj4100

in Japan, ftp://www.jpn.hp.com/supp ort/lj4100
in Korea, http://www.hp.co.kr/support/lj4100
in Taiwan, http://www.hp.com.tw/sup p ort/lj4100

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

HP service parts information compact disc

This powerful, CD-ROM-based parts information tool is designed to give users fast, easy access to
parts information and recommended stocking lists for a wide range of HP products. To subscribe to
this quarterly service in the U.S. or Canada, call (1) [phone]. In Asia Pacific , call (65) 740-

4484. Parts identification and pricing information can also be fou nd on the World Wide Web at: http:/
/www.hp.com/go/partsinfo

42 Service approach EN

HP support assistant compact disc

This support tool offers a comprehensive on line information system designed to provide technical
and product information about He wlett-Packard products. To subscribe to this quarterly service in the
U.S. or Canada, call (1) [phone]. In Hong Kong, Indonesia, Malaysia, or Singapore, call
Mentor Media at (65) 740-4477.

Customer care reseller sales and service support center

The Customer Care Reseller Sales and Service Support Center is available to assist resellers and
service technicians. To reach this support center, call (1) [phone].

HP authorized resellers and support

To locate authorized HP resellers and support, call
(1) [phone] in the U.S. or (1) [phone] in Canada.

HP service agreements

Call (1) [phone] in the U.S. or (1) [phone] in Canada.

Other areas

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

EN Chapter 2 Service approach 43

Toner cartridge information

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

At five percent page coverage, a toner cartridge will print approximately 6,000 or 10,000 pages,
depending on the toner cartridge model installed. A toner cartridge might print fewer pages if
routinely printing with dense ink coverag e, or more pages when routin ely printing pages with less ink
cover age, such as short memos. If EconoMode or small media is always used, however, the toner
supply could outlast the mechanical parts in the toner cartridge.

Note For best results , alwa ys use a toner cartridge before the expirat ion date stamped on the toner cartridge

box.

Refilled toner cartridges

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

Repairs resulting from the use of refilled toner cartridges are not covered under Hewlett-P ac kard

!

warranty or maintenance contracts.
Hewlett-Packard has no control or process to ensure that a refilled toner cartridge functions at

!

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

The print quality of HP LaserJet toner cartridges influences the customer’s perception of the

!

printer. Hewlett-Packard has no control over the actual print quality of a refilled toner cartridge.

Recycling toner cartridges

To reduce waste, Hewlett-Packard offers a r ecycling program for used toner cartridges. Cartridge
components that do not wear out are recycled . Plastics and other materials are recycled.

Hewlett-Packard pays the shipping costs from the user to the recycling plant. For each cartridge
returned, Hewlett-Packard donates one U.S . dollar to be shared by the Nature Conservancy and the
National Wildlife Federation. To join this recycling effort, follow the instructions inside the toner
cartridge box.

44 Service approach EN

Warranty statement

The warranty for this product gives the customer specific legal rights. There might also be other
rights that vary from area to area.

Printer warranty

Hewlett-Packard warrants the HP LaserJet 4100 series printer for one year. For detailed information
about the printer warranty, see the limited warranty statement in the user guide.

Limited warranty for toner cartridge life

Note The warranty belo w applies to the toner cartridge that came with this printer. This w arranty supersedes

all previous warranties (7/19/96).
The HP toner cartridge is warranted to be free from defects in materials and workmanship for the life

of the cartridge until the HP toner is depleted. The HP toner is depleted when the printer indicates a
toner-low message. Hewlett-Packard will, at its option, either replace products that prove to be
defective or refund the purchase price.

The warranty does not cover toner cartridges that have been refilled, or are emptied, abused,
misused, or tampered with in any way. This limited warranty gives the customer specific legal rights.
The customer might have other rights which vary from state to state, province to province, and
country to country.

To the extent allow ed by applicable law, in no event shall Hewlett-Packard Company be liable for any
incidental, consequential, special, indirect, punitive, or exemplary damages or lost profits from any
break of this warranty or otherwise.

EN Chapter 2 Service approach 45

46 Service approach EN

3

Printer operation

Chapter contents

Using the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Control panel layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Control panel lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Control panel keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Settings and defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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

Quick copy jobs menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Private/stored jobs menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Information menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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

Printing menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Print quality menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Configuration menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

I/O menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

EIO menu (networked printers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Resets menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Page count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Maintenance count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Maintenance interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Cold reset paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Clear event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Top margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Tray 1 left margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Trays 2 and 3 left margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Testing the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Engine test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Resetting the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Cold reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Clearing NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Initialization of NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

EN Chapter 3 Printer operation 47

Initialization of the hard disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

System configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

MS-DOS system configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Parallel DOS commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

48 Printer operation EN

Using the control panel

Control panel layout

The printer control panel consists of a two-line display and lights and keys as shown below:

2-line
display

Ready

Data

Attention

Figure 5. Control panel layout

Control panel lights

Table 16. Control panel lights

READY

Go

Cancel

Job

Menu

Item

– Value +

Select

Light Indication

Ready The printer is ready to print.

Data The printer is processing informa tio n.

Attention Action is required. See the control panel display .

EN Chapter 3 Printer operation 49

Control panel keys

Table 17. Control panel keys
Key Function

G

O

C

ANCEL JOB

M

ENU

Places the printer either online or offline.

!

Prints any data in the printer’s buffer.

!

Allows the printer to resume printing after being offline.

!

Clears most printer messages and places the printer
online.

Allows the printer to continue printing with an error

!

message such as

UNEXPECTED PAPER SIZE

Confirms a manual feed request if tray 1 is loaded and

!

TRAY 1 MODE=CASSETTE

TRAY X LOAD [TYPE] [SIZE]

.

has been set from the paper-

or

handling menu on the printer control panel.
Overrides a manual feed request from tray 1 by

!

selecting paper from the next available tray.
Exits the control panel menus. (To save a selected

!

control panel setting, first press S

ELECT

.)

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

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

I

TEM

– V

S

ELECT

[?]

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

+ Cycles through the selected menu item’s values. Press + to

ALUE

move forward or – to move backward.

Saves the selected value for that item. An asterisk (*)

!

appears next to the selection to indicate that it is the
new default. Default settings remain when the printer is
switched off or reset.

Prints any information pages shown in the control

!

panel.

Provides instructions for resolving most printer errors.
Certain control panel error messages alternate with
instructions about gaining access to the online help system.
Press the right end of the I

button to scroll through help

TEM

messages.

50 Printer operation EN

Settings and defaults

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

Note Settings sent from software applications override printer defaults.

Table 18. Settings and defaults
Setting or default Explanation

Temporary setting A value set for the current print job by the software

application. For example, a request from the software to
print three copies instead of the control panel default value
of one copy is a t empor ary setting. The p rinter contin ues t o
use the temporary setting until it receives another software
request or until it is reset.

Control panel default A value set at the control panel when you select a menu

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

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

defaults are listed in the item column in the menu tables
starting on page 52.

Setting the display language

1 Press and hold S

on the control panel display.

2 Release S
3 When

– V

ALUE

4 Press S

ELECT

LANGUAGE=ENGLISH

+ until the language you want appears.

to save your choice.

ELECT

An asterisk (*) will appear beside the selected language.

5 Press G

to exit the menu.

O

while turning on the printer. Hold S

ELECT

.

appears on the display, press

ELECT

until

SELECT LANGUAGE

appears

EN Chapter 3 Printer operation 51

Control panel menus

Press M

for access to all control panel menus. When additional trays or other accessories are

ENU

installed in the printer, new menu items might automatically appear.

Changing a control panel setting

1 Press M
2 Press I
3 Press – V
4 Press S

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

5 Press G

Note Settings in the printer driver and software application override control panel settings. Software

application settings override printer driver settings.
If you cannot get to a men u or it em, it is ei ther not a n option for the printer, or the customer’s network

administrator has lock ed the function (the control pa nel reads
customer’s network administrator.

until the menu you want appears on the control panel display.

ENU

until the item you want appears.

TEM

+ until the setting you want appears.

ALUE

to save the selection.

ELECT

to exit the menu.

O

ACCESS DENIED MENUS LOCKED

). See the

Printing a control panel menu map

To see the current settings f or all o f the men us and men u items available on the control panel, print a
control panel menu map.

1 Press M
2 Press I
3 Press S

until

ENU

TEM

ELECT

INFORMATION MENU

until

PRINT MENU MAP

to print the menu map.

appears on the control panel display.

appears.

52 Printer operation EN

Quick copy jobs menu

This menu provides a list of the quick copy jobs stored on the printer. The user can print or delete
these jobs from the control panel.

Note This menu appears only if you have an optional hard-disk accessory or 32 MB of memory installed

and quick copy jobs are stored on it.

Table 19. Quick copy jobs menu

Item Value Explanation

[USERNAME]
[JOBNAME]

COPIES=1 1 to 999

DELETE

The name of the person who owns the
quick cop y job and the job name.

The number of additional copies the user
wants to print.

: Prints the requested number of

1-999

copies of the job.

DELETE

hard disk.
After changing a setting, press S

: Deletes the job from the printer’ s

.

ELECT

EN Chapter 3 Printer operation 53

Private/stored jobs menu

This menu provides a list of the stored jobs on the printer. The user can print or delete these jobs
from the control panel. See the user guide for more information.

Note This menu appears only if you have an optional hard-disk accessory or 32 MB of memory installed

and there are private or stored jobs on it.

Table 20. Private/stored jobs menu

Item Value Explanation

[USERNAME]
[JOBNAME]

PIN:0000

COPIES=1 1

to

999

DELETE

The name of the person who owns the
quick cop y job and the job name.

To print the job, the user must enter the
personal identification number (PIN)
assigned to the job in the driver. See the
user guide for more information.

The number of copies the user wants to
print.

: Prints the requested number of

1-999

copies of the job.

DELETE

After changing a setting, press S

: Deletes the job from the printer.

ELECT

.

54 Printer operation EN

Information menu

This menu contains printer inf ormation pages that giv e det ails about the printer and it s configur ation.
To print an information page, use the I

Table 21. Information menu
Item Explanation

key to scroll to the desired page and then press S

TEM

ELECT

.

PRINT
MENU MAP

PRINT
CONFIGURATION

PRINT
PCL FONT LIST

PRINT
PS FONT LIST

PRINT
FILE DIRECTORY

PRINT
EVENT LOG

SHOW
EVENT LOG

The menu map shows the la y out and cur rent settings of the
control panel menu items.

The configuration page shows the printer’s current
configuration. If an HP JetDirect print server card is
installed (HP LaserJet 4100N/TN/DTN printers), a JetDirect
Configuration Page will also print.

The PCL font list shows all the PCL fonts currently av ailab le
to the printer.

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

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

The event log lists the most current 20 printer events or
errors.

This item allows you to view the most recent printer events
on the control panel display. Press – V

+ to scroll

ALUE

through the event log entries.

Note

The ev ent log lists the err or number (t he first tw o digits), the
error code, and the associated page co unt.

PRINT USAGE PAGE

The usage page shows the quantity of pages printed, as
well as the paper source used. It also re flects the number
of one-sided versus two-sided pages.

Note

This item will only show in the information menu if an
optional hard-disk accessory or 32 MB of memory is
installed in the printer. This item will generate a page
containing information that can be used for accounting
purposes.

PRINT SUPPLIES STATUS

When used with an HP genuine toner cartridge, the
supplies status page shows toner cartridge information,
statistics about the total number of pages by size and jobs
processed, toner cartridge manufacture date and serial
number, page counts, and maintenance information.

EN Chapter 3 Printer operation 55

Table 21. Information menu (continued)
Item Explanation

PRINT
PAPER PATH TEST

The paper-path test can be used to verify that the paper
path is working correctly, or to troubleshoot prob lems with a
type of paper . Choose the in put tr ay , out put bin, duplexer (if
available), and number of copies.

56 Printer operation EN

Paper-handling menu

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

Some items in this menu (such as du ple x and man ual f eed) are a v ailab le from a softw are applica tion,
or from the printer driver (if the a ppropriate driv er is in stalled) . Printer driv er an d software application
settings override control panel settings.

Table 22. Paper handling menu
Item/Default value Values Explanation

ENVELOPE FEEDER
SIZE=COM10

(110 V printers)
or

SIZE=DL

(220 V printers)

ENVELOPE FEEDER
TYPE=PLAIN

TRAY 1 MODE=
FIRST

For supported print media
sizes, see page 28.

For supported print media
types, see page 28.

FIRST
CASSETTE

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

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

Determine how the printer will
use tray 1.

: If print media is loaded in

FIRST

tray 1, the printer will pull media
from that tray first.

CASSETTE

assigned to tray 1 using the

TRAY 1 SIZE

in this menu when

MODE=CASSETTE

tray 1 to be used as a reserved
tray.

: A media size must be

option (the next item

TRAY 1

). This allows

TRAY 1 SIZE=
LETTER

(110 V printers)
or

A4

(220 V printers)

TRAY 1 TYPE=
PLAIN

TRAY 2 TYPE=
PLAIN

EN Chapter 3 Printer operation 57

For supported print media
sizes, see page 25
through page 27.

For supported print media
types, see page 28.

For supported print media
types, see page 28.

This item appears only when

TRAY 1 MODE= CASSETTE

value to correspond with the
media size currently loaded in
tray 1.

This item appears only when

TRAY 1 MODE= CASSETTE

value to correspond with the print
media type currently loaded in
tray 1.

Set the value to correspond with
the media type currently loaded in
tray 2.

. Set the

. Set the

Table 22. Paper handling menu (continued)
Item/Default value Values Explanation

TRAY 3 TYPE=
PLAIN

TRAY 4 TYPE=
PLAIN

SMALL PAPER
SPEED=NORMAL

MANUAL FEED=OFF OFF

For supported print media
types, see page 28.

For supported print media
types, see page 28.

NORMAL
SLOW

ON

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

This item appears only when a
fourth paper tray is installed. Set
the value to correspond with the
media type currently loaded in
tray 4.

Select
printing envelopes (or small
media sizes) and standard media
sizes and print problems appear.
Be sure to return the speed to

NORMAL

When
briefly pauses between pages to
reduce the possibility of a
repeating image.

Feed the print media manually
from tray 1, rather than
automatically from a tray. When

MANUAL FEED=ON

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

SIZE]

when alternating

SLOW

when finished.

is selected, the printer

SLOW

and tray 1 is

MANUALLY FEED [PAPER

.

DUPLEX=OFF OFF

ON

BINDING=
LONG EDGE

58 Printer operation EN

LONG EDGE
SHORT EDGE

This item appears only when an
optional duplexer is installed. Set
the value to
sides (duplex) or
one side (simplex) of a sheet of
paper.

This item appears only when an
optional duplexer is installed and

DUPLEX=ON

edge when duplexing (printing on
both sides of paper).

to print on both

ON

to print on

OFF

. Choose the binding

Table 22. Paper handling menu (continued)
Item/Default value Values Explanation

CONFIGURE FUSER
MODE MENU=NO

[TYPE]=NORMAL NORMAL

NO
YES

HIGH1
LOW
HIGH2

Configure the fuser mode
associated with each print media
type. (This is only necessary if
you ex perience loose toner
problems, e xcessive curl, or other
print-quality issues when printing
on certain media types.)

: The fuser-mode menu items

NO

are not av ailable.

: Additional items appear (see

YES

below).

Note

To see the default fuser mode for
each media type, select
scroll back to the information
menu, and print a menu map.

This item appears only when

CONFIGURE FUSER MODE
MENU=YES

set to
default. The exceptions are as
follows:

ROUGH=HIGH1
TRANSPARENCY=LOW
NORMAL

fuser temperature for optimum
results on most typical papers.

HIGH1

higher fuser temperature.
should be used with rough­textured or heavy paper if you
have trouble with toner adhering
to the page.

LOW

temperature, which can help
reduce curl on lightweight paper
and transparencies. However,
toner might not adhere as well to
the page.

HIGH2

higher temperature as
it also slows printer throughput,
which creates the best fusing for
very rough paper.

Note

HIGH2

for A4-, letter-, and legal-size
paper, and slows the throughput
to 16 pages per minute.

. Most paper types are

NORMAL

fuser mode provides a

fuser mode provides a lower

fuser mode uses the same

fuser mode only operates

fuser mode by

fuser mode provides a

YES

HIGH1

HIGH1

,

, but

EN Chapter 3 Printer operation 59

Printing menu

Some items in this menu can be used from a software application or from the printer driver (if the
appropriate driver is installed). Printer driver and software application settings override control panel
settings.

Table 23. Printing menu
Item Values Explanation

COPIES=1 1 TO 999

PAPER SIZE=LETTER
ENVELOPE=COM10

(110 V printers)
or

PAPER SIZE=A4
ENVELOPE=DL

(220 V printers)

CONFIGURE CUSTOM
PAPER=NO

For supported print media

sizes, see page 26 through

page 28.

NO

YES

Set the default number of
copies by selecting any
number from 1 to 999.
Press –V
change the setting by
increments of 1, or hold
down – V
increments of 10.

Set the default size for print
media. (The item name
changes from paper to
envelope as you scroll
through the available sizes.)

The custom-paper

NO:

menu items are not
available.

The custom-paper

YES:

menu items appear (see the
next item).

+ once to

ALUE

+ to scroll by

ALUE

UNIT OF MEASURE=
INCHES

(110 V printers)
or

MILLIMETERS

(220 V printers)

X DIMENSION=8.5 INCHES

(110 V printers)
or

216 MILLIMETERS

(220 V printers)

Y DIMENSION=14.0 INCHES

(110 V printers)
or

356 MILLIMETERS

(220 V printers)

ORIENTATION=
PORTRAIT

INCHES

MILLIMETERS

3.00 TO 8.5 INCHES

(110 V printers)

or

76 to 216 MILLIMETERS

(220 V printers)

5.00 TO 14.0 INCHES

(110 V printers)

or

127 to 356 MILLIMETERS

(220 V printers)

PORTRAIT

LANDSCAPE

This item appears only
when

CONFIGURE CUSTOM

PAPER=YES

of measurement for the
custom paper size.

This item appears only
when

PAPER=YES

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

This item appears only
when

PAPER=YES

media length dimension
(long edge).

Determine the default
orientation of print on the
page.

. Select the unit

CONFIGURE CUSTOM

. Select the

CONFIGURE CUSTOM

. Select the

60 Printer operation EN

Table 23. Printing menu (continued)
Item Values Explanation

FORM LENGTH=60 LINES

(110 V printers)
or

64 LINES

(220 V printers)

PCL FONT
SOURCE=INTERNAL

PCL FONT
NUMBER=0

5 to 128

INTERNAL
SOFT
SLOT 1, 2, OR 3

(depends on location of
available fonts)

0 TO 999

(depends on location of
available fonts)

Sets vertical spacing from 5
to 128 lines for default
paper size. Press – V

ALUE

+

once to change the setting
by increments of 1, or hold
down – V

+ to scroll by

ALUE

increments of 10.

INTERNAL
SOFT:

SLOT 1, 2

: Internal fonts.

Permanent soft fonts.

, or 3: Fonts
stored in one of the three
DIMM slots.

Note

Print a PCL font list
(page 55) to see the
available fonts.

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

Note

Print a PCL font list
(page 55) to see the
available fonts.

PCL FONT PITCH=

10.00

PCL SYMBOL
SET=PC-8

0.44 to 99.99

PC-8

many others

This item might not appear,
depending on the font
selected. Press – V

ALUE

+

once to change setting by
increments of 0.01 for pitc h,
or hold down – V

ALUE

+ to

scroll by increments of 1.

Select any one of several
available symbol sets from
the printer control panel. A
symbol set is a unique
grouping of all the
characters in a font . A v alue
of PC-8 or PC-850 is
recommended for line
drawn characters.

EN Chapter 3 Printer operation 61

Table 23. Printing menu (continued)
Item Values Explanation

COURIER FONT=REGULAR REGULAR

DARK

WIDE A4=NO NO

YES

Select the version of
Courier font to use:

REGULAR

Courier font av ailabl e on the
HP LaserJet 4 series
printers.

DARK

font available since the HP
LaserJet III series printers.

Both fonts are not available
at the same time.

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

NO

characters can be printed
on one line.

YES

characters can be printed
on one line.

: The internal

: The internal Courier

WIDE A4

: Up to 78 10-pitch

: Up to 80 10-pitch

setting

OVERRIDE
A4/LETTER=NO

APPEND CR TO LF=
NO

NO
YES

NO
YES

Choose
letter-size paper
automatically when an A4
job is sent, but no A4-size
paper is loaded in the
printer (or to print on A4­size paper when a letter job
is sent, but no letter-size
paper is loaded in the
printer).

Select
carriage return to each line
feed encountered in
backward-compatible PCL
jobs (pure text, no job
control). Some
environments, such as
UNIX, indicate a new line
using only the line-feed
control code. This option
allows the user to append
the required carriage return
to each line feed.

to print on

YES

to append a

YES

62 Printer operation EN

Print quality menu

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

Table 24. Print quality menu
Item Values Explanation

RESOLUTION=
FASTRES 1200

300
600
FASTRES 1200
PRORES 1200

Select the resolution from the
following values:

: Produces draft print quality

300

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

: Produces high print quality

600

at the printer’s maximum speed.

FASTRES 1200

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

PRORES 1200

optimum print quality (true 1200
dpi) at the printer’s maximum
speed.

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

: Produces

: Produces

RET=MEDIUM OFF

LIGHT
MEDIUM
DARK

EN Chapter 3 Printer operation 63

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

Table 24. Print quality menu (continued)
Item Values Explanation

ECONOMODE=OFF OFF

ON

TONER DENSITY=3 1

2
3
4
5

Turn EconoMode on (to save
toner) or off (for high quality).
EconoMode creates draft­quality printing by reducing the
amount of toner on the printed
page by up to 50 percent.

Caution

Hewlett-Packard does not
recommend constant use of
EconoMode. If EconoMode is
always used, the toner supply
might outlast the mechanical
parts in the toner cartridge.

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

AUTO
CLEANING PAGE=OFF

AUTO CLEANING
FREQUENCY=2000

CLEANING PAGE SIZE=
LETTER

(110 V printers)
or

A4

(220 V printers)

ON
OFF

1000
2000
5000
10,000
20,000

LETTER
A4

Set

AUTO CLEANING PAGE=ON

to
have the printer automatically
create and process a cleaning
page (to remove debris from
the fuser) per the interval
specified in the next item.

This item appears when

CLEANING PAGE=ON

AUTO

.
Select the page interval for
automatically creating and
processing a cleaning page.

This item appears when

CLEANING PAGE=ON

AUTO

.
This sets the media size upon
which the auto cleaning page
is processed. The default
media size corresponds with
the cold-reset media size.

64 Printer operation EN

Table 24. Print quality menu (continued)
Item Values Explanation

CREATE
CLEANING PAGE

PROCESS
CLEANING PAGE

No value to select. Press S

ELECT

to print a
cleaning page (for cleaning
excess toner from the fuser
assembly).
In order for the cleaning page
to work correctly, print the
page on copier-grade paper
(not bond or rough paper).
Follow the instructions on the
cleaning page.

No value to select. This item appears only after a

cleaning page has been
created (as described above).
Follow the instructions on the
cleaning page.

Note

It might take appro ximately two
minutes for the printer to finish
processing the cleaning page.

EN Chapter 3 Printer operation 65

Configuration menu

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

Table 25. Configuration menu
Item Values Explanation

POWERSAVE TIME=
30 MINUTES

TONER LOW=
CONTINUE

1 MINUTE
15 MINUTES
30 MINUTES
1 HOUR
2 HOURS
4 HOURS

CONTINUE
STOP

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

Minimizes the amount of power

!

consumed by the printer when it is
idle.

Reduces wear on the printer’s

!

electronic components by turning
off the backlight on the display.

When you send a print job, press a
control panel key, open a paper tray, or
open the top cover, the printer
automatically comes out of PowerSave
mode.

Note

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

Determine how the printer behaves
when toner is low . A toner-low message
first appears on the displa y wh en about
15 percent of the toner remains in the
cartridge (about 1,500 pages remaining
for the 10,000-page cartridge and
about 900 pages remaining for the
6,000-page cartridge at 5 percent page
coverage).

CONTINUE

: The printer will continue to

print with the message displayed.

: The printer will stop printing and

STOP

further action is required.

TONER OUT=
CONTINUE

CONTINUE
STOP

Determine how the printer behaves
when toner is out. A toner-out message
appears on the display when the toner
cartridge is out of toner.

CONTINUE

: The printer will continue to
print with the message displayed.
Howev er, the print quality might be very
poor or difficult to see.

: The printer will stop printing and

STOP

further action is required.

66 Printer operation EN

Table 25. Configuration menu (continued)
Item Values Explanation

CLEARABLE
WARNINGS=JOB

AUTO CONTINUE=
ON

JAM RECOVERY=
AUTO

JOB
ON

ON
OFF

AUTO
ON
OFF

Set the length of time that a clearable
warning appears on the printer control
panel.

: Warning messages appear on the

JOB

control panel until the end of the job
from which they were generated.

: Warning messages appear on the

ON

control panel until G

is pressed.

O

Determine how the printer reacts to
errors.

: If a minor error occurs that pre v ents

ON

printing, the message will appear, and
the printer will go offline for 10 seconds
before returning online.

: If a minor error occurs that

OFF

prevents printing, the message will
remain on the display and the printer
will remain offline until G

is pressed.

O

If the printer is on a network, you will
probably want to t urn

.

ON

AUTO CONTINUE

to

Determine how the printer behaves
when a jam occurs.

: The printer automatically selects

AUTO

the best mode for printer jam recovery
(usually ON).

: The printer automatically reprints

ON

pages after a jam is cleared.

: The printer does not reprint pages

OFF

following a jam. Printing performance
might be increased with this setting.

MAINTENANCE
MESSAGE=OFF

OFF

This item appears only after the

PERFORM PRINTER MAINTENANCE

message appears on the display.

The

:

OFF
MAINTENANCE

PERFORM PRINTER

message will be
temporarily cleared but will return after
5 percent of the printer maintenance
interval (or after approximately 10,000
pages).
The message should be turned off only

while waiting for the printer
maintenance kit to be installed. If the
required maintenance is not perf ormed,
the printer’s performance will degrade.

PRINT PS ERRORS=
OFF

OFF
ON

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

EN Chapter 3 Printer operation 67

Table 25. Configuration menu (continued)
Item Values Explanation

RAM DISK=AUTO OFF

AUTO

QUICK COPY

0 to 50

JOBS=32

HELD JOB
TIMEOUT=OFF

OFF
1 HOUR
4 HOURS
1 DAY
1 WEEK

Determine how the RAM disk is
configured. This item appears only if
there is no optional hard-disk
accessory installed and the printer has
at least 16 MB of memory.

: The RAM disk is disabled.

OFF

Configure the amount of memory to be
used through the following item:

DISK SIZE

Note

.

If the setting is changed from

AUTO

or from

AUTO

to

, the printer will

OFF

OFF

RAM

to

automatically reinitialize.

Specifies the number of quick cop y jobs
that can be stored on the printer’s hard­disk accessory.

Sets the amount of time that stored
jobs are kept before being
automatically deleted from the printer.

PERSONALITY=
AUTO

AUTO
PCL
PS

Select the default printer language
(personality). Possible values are
determined by which valid languages
are installed in the printer.
Normally, you should not change the
printer language (the default is

AUTO

). If
you change it to a specific printer
language, the printer will not
automatically switch from on e language
to another unless specific software
commands are sent to the printer.

68 Printer operation EN

I/O menu

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

Table 26. I/O menu
Item Values Explanation

PARALLEL ADV
COMMUNICATN=ON

PARALLEL HIGH
SPEED=YES

I/O TIMEOUT=15
SECONDS

ON
OFF

YES
NO

5 to 300
SECONDS

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

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

: The printer accepts faster parallel

YES

communications used for connections with
newer computers.

: The printer accepts slower parallel

NO

communications used for connections with
older computers.

Select the I/O timeout period in seconds.
(The I/O timeout refers to the time,
measured in seconds, that the printer waits
before ending a print job.)
This setting allows you to adjust timeout f or
best performance. If data from other ports
appear in the middle of your print job,
increase the timeout value.
Press – V
increments of 1, or hold down – V
scroll by increments of 10.

+ once to change settings by

ALUE

ALUE

+ to

EN Chapter 3 Printer operation 69

EIO menu (networked printers)

The EIO (enhanced input/output) menu appears only when an EIO device is installed in an EIO slot
on the printer (such as an HP JetDirect print server). The items in the menu depend on the particular
accessory product installed. If the printer contains an HP JetDirect print server EIO card, you can
configure basic networking parameters using the EIO menu. These and other parameters can also
be configured through HP Web JetAdmin.

Table 27. EIO menu
Item Values Explanation

CFG NETWORK=NO NO

YES

IPX/SPX=ON ON

OFF

DLC/LLC=ON ON

OFF

TCP/IP=ON ON

OFF

ATALK=ON ON

OFF

Select whether or not you want to use
the HP JetDirect menu.

: Bypass the HP JetDirect menu.

NO

: Use the HP JetDirect menu. You

YES

must change this to
want to use the menu.

Note

You must select
display the following items.

Select whether the IPX/SPX protocol
stack (in Novell NetWare networks, for
example) is enabled (ON) or disabled
(

).

OFF

Select whether the DLC/LLC protocol
stack is enabled (ON) or disabled (

Select whether the TCP/IP protocol
stack is enabled (ON) or disabled (

Select whether the Apple EtherTalk
protocol stack is enabled (ON) or disabled
(

).

OFF

CFG NETWORK=YES

each time you

YES

to

OFF

OFF

).

).

70 Printer operation EN

Table 27. EIO menu (continued)
Item Values Explanation

CFG IPX/SPX=NO NO

YES

CFG TCP/IP=NO NO

YES

Select whether you want to use the IPX/
SPX menu and set IPX/SPX protocol
parameters.

: Bypass the IPX/SPX menu items.

NO

: Use the IPX/SPX menu items.

YES

In the IPX/SPX menu, you can specify
the frame-type parameter used on your
network.
The default is
and limit the frame type to the first one
detected.
For Ethernet cards, frame type
selections are

EN_8022, EN_SNAP

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

SRC RT=AUTO

.

ALL RT

Select whether you want to use the
TCP/IP menu and set TCP/IP protocol
parameters.

: Bypass the TCP/IP menu items.

NO

: Use the TCP/IP menu items.

YES

In the TCP/IP menu, you can specify

BOOTP=YES

parameters to be automatically loaded
from a bootP or DHCP server when the
printer is turned on.
If you specify
can manually set the following TCP/IP
parameters from the control panel: each
byte of the IP address (IP), Subnet Mask
(SM), Syslog Server (LG), and Default
Gateway (GW). You can also manually
set the idle timeout period.
Print an HP JetDirect configuration page
to verify your settings. Howev er , note that
the print server might overwrite selected
parameters with values that ensure
proper operation.

or

, to automatically set

AUTO

EN_8023, EN_II,

.

TR_8022, TR_SNAP

(default),

DHCP=YES

BOOTP=NO

OFF, SINGLE R

for TCP/IP

and

DHCP=NO

.

, or

, you

EN Chapter 3 Printer operation 71

Table 27. EIO menu (continued)
Item Values Explanation

CFG LINK=NO NO

YES

Select whether you want to manually
configure the HP JetDirect 10/100Base­TX print server’s network link speed and
communication mode. The HP JetDirect
settings must match the network.

: Bypass the link configuration menu

NO

items.

: Use the link configuration menu

YES

items. One of the following link
configurations can be set:

: The print server will automatically

AUTO

configure itself to match the network’s
link speed and communication mode.

10T HALF

operation.

10T FULL

operation.

100T HALF

operation.

100T FULL

operation.

: 10 Mbps, half-duplex
: 10 Mbps, full-duplex

: 100 Mbps, half-duplex
: 100 Mbps, full-duplex

72 Printer operation EN

Resets menu

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

You want to restore the printer’s default settings.

!

Communication between th e printer and computer has been interrupted.

!

The items in the resets menu will clear all memory in the printer, while C
current job.

Table 28. Resets menu
Item Values Explanation

NEW TONER
CARTRIDGE=NONOYES

Change the value to
toner cartridge.

YES

when you first install a non-HP

YES

allows the printer to recognize the new

cartridge, and the printer resets the toner gaug e to full.

RESTORE
FACTORY
SETTINGS

POWERSAVE=ONON

OFF

Press S
the factory (default) settings. This item also clears the input
buffer for th e act ive I/O.

This item turns the PowerSave mode on or off.

POWERSAVE=ON

Minimizes the amount of power consumed by the printer

!

to perform a simple reset and restores most of

ELECT

mode does the following:

when it is idle
Reduces wear on the printer’s electronic components by

!

turning off the backlight on the display

When you send a print job , pr ess a control pan el k e y, open a
paper tray, or open the top cover, the printer automatically
comes out of PowerSave mode.
In the configuration menu, you can set how long the printer
remains idle before it enters PowerSave mode. Turning
PowerSave off is not recommended.

Note

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

ANCEL JOB

clears only the

EN Chapter 3 Printer operation 73

Service mode

Service mode should be used only by authorized service personnel. The following can be done in
service mode:

Verify and set the page count and serial number. These are shown on the configuration page.

!

Set the cold reset paper size default. (This sets the factory default paper size to either Letter or

!

A4).
Turn the diagnostic functions on or off (fo r software developers only).

!

Clear the event log.

!

Set the interval at which the

!

panel display.

To enter service mode:

PERFORM PRINTER MAINTENANCE

message appears on the control

1 While turning on the printer, hold down S

ELECT

and C

ANCEL JOB

until all of the lights on the

control panel are lit.

2 Press the right side of the M

key, then press S

ENU

. The message

ELECT

SERVICE MODE

temporarily appears and will reappear when the printer completes the initialization process.

3 To exit the service mode, press G

Note If

appears in the control panel, the k e ys m ight ha v e b een released too soon, or the wrong k e ys

READY

.

O

were pressed.

Note Before replacing the f ormatter or firmware DIMM, print a configur ation page and a men u map to verify

the current printer settings. Use th e information on these pages to reset the customer’ s printer settings.

74 Printer operation EN

Service menu

To enter the service menu, see “Service mode” on page 74.

Figure 6. Service menu

Changing settings

The item-count value is changed using a d iff er ent method tha n is used f or other control pan el v alues .
Instead of increasing the entire value by increments, each digit can be selected and modified
individually. The following control panel keys are used to modify the page count value:

S

ELECT

V

- Increases the value of the currently selected digit by

ALUE

– V

ALUE

EN Chapter 3 Printer operation 75

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

ELECT

key

wraps the cursor around to the first digit.

one. Pressing V

+ when 9 is the value of the

ALUE

currently selected digit will change the value of the
digit to 0.

Decreases the value of the current ly selected digit by
one. Pressing – V

when 0 is the value of the

ALUE

currently selected digit will change the value of the
digit to 9.

Table 29 shows the sequence of keystrokes used to change the page count from a value of 000000
to a value of 0010480.

Table 29. Changing the page count (example)
Key press Display Description

SERVICE MODE

M

I

TEM

ENU

+

+

SERVICE MENU

PAGES=0

000000 *

Enter the

SERVICE MENU

.

Advance to the first item in the

.

MENU

SERVICE

S

ELECT

S

ELECT

V

+

ALUE

S

ELECT

S

ELECT

V

+

ALUE

(4 presses)

S

ELECT

– V

ALUE

(2 presses)

S

ELECT

(2 presses)

PAGES=0000000 *

PAGES=0000000 *

PAGES=001

0000 *

PAGES=0010000 *

PAGES=0010000 *

PAGES=00104

00 *

PAGES=0010400 *

PAGES=001048

PAGES=0

0 *

010480 *

Advance the cursor one digit to the right.

Advance the cursor one digit to the right.

Increase the value of the third digit by
one.

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

Advance the cursor one digit to the right.

Increase the value of the fifth digit by
four.

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

Decrease the value of the sixth digit by
two.

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

G

O

Exit.

76 Printer operation EN

Page count

The page count that is stored in nonvolatile memory (NVRAM) and is shown on the configuration
page printout represents the number of pages the printer h as printed (exclud ing engine test prints). If
it is necessary to install a new formatter in the printer, the page count must be reset so that it
represents the age of the printer engine rat her than the age of the formatter.

Note Before replacing the f ormatter or firmware DIMM, print a configur ation page and a men u map to verify

the current printer settings. Use th e information on these pages to reset the customer’ s printer settings.

Maintenance count

The maintenance count should be reset only after a maintenan ce kit has been installed. For more
information, see page 86.

Maintenance interval

The

MAINTENANCE INTERVAL

service is due for the printer. This is set initially at the factory to 200,000 pages. (For example, the

PERFORM PRINTER MAINTENANCE

installed at 200,114 pages, the message reappears 200,000 pages later, at 400,114 pages.) The
procedure for editing this number is similar to editing the

in the service-mode menu sets the page count interval at which the ne xt

message appears at 200,000 pages. If the printer maintenance kit is

item.

PAGES

Serial number

The printer serial number is stored in NVRAM. If a formatter is replaced, then the printer serial
number must be reentered. T he proced ure for editing this number is similar to editing the

Note Before replacing the f ormatter or firmware DIMM, print a configur ation page and a men u map to verify

the current printer settings. Use th e information on these pages to reset the customer’ s printer settings.

PAGES

item.

Cold reset paper

The cold reset paper size is stored in NVRAM. When a printer cold reset is performed, the default
paper size (in the printing menu) is set to the value saved for the cold reset paper size. Possible
values are
countries that use A4 rather than letter-size paper, set the cold reset paper size to A4.

COLD RESET PAPER=LETTER

and

COLD RESET PAPER=A4

. When replacing the formatter in

Diagnostics

This menu item enables or disables the use of the firmware diagnostic features for software
development. Possible values are
diagnostic features are available when the printer is in the online
key.

Note The feature above is for software developers only.

EN Chapter 3 Printer operation 77

DIAGNOSTICS=OFF*

and

DIAGNOSTICS=ON

. When enabled, the

state by pressing the S

READY

ELECT

Clear event log

This item deletes all items that have been recorded in the internal event log.

Top margin

This item can be used to adjust the margin between the top of the page and the top of the printed
image.

Note Adjust the top margin value in the soft war e applicat ion first. This top m argin value does not affect the

engine test top margin.
Before adjusting the t op margin through the service menu, first ensure the engine test top margin

register is properly adjusted (page 175).
To set the top margin registration value:

1 Press the I
2 Press the V
3 Press the S

key to scroll through the service menu until

TEM

key to increase or decrease the margin.

ALUE

key to save the new margin adjustment.

ELECT

TOP MARGIN=07

appears.

Tray 1 left margin

This item can be used to adjust the margin be tw een the le ft side of the p ages from tr ay 1 and the left
side of the printed image.

1 Press the I
2 Press the V
3 Press the S

key until

TEM

key to increase or decrease the margin.

ALUE
ELECT

TRAY 1 LEFT MARGIN=07

key to save the new margin adjustment.

appears.

Trays 2 and 3 left margin

This item can be used to adjust the margin be tw een the le ft side of the pag es from tr ays 2 and 3 and
the left side of the printed image.

1 Press the I
2 Press the V
3 Press the S

key until

TEM

key to increase or decrease the margin.

ALUE
ELECT

TRAYS 2 AND 3 LEFT MARGIN=07

key to save the new margin adjustment.

appears.

Testing the printer

When you print a configuration page, the printer checks its internal controller and I/O interface, and
then prints a test page. You can review the configuration page printout to verify prop er installation of
such options as paper trays or printer languages. For more information, see page 227.

Engine test

The engine test print can be used to verify that the print engine is functioning correctly. For more
information, see page 190.

78 Printer operation EN

Resetting the printer

Cold reset

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

CAUTION Performing a cold reset resets the HP JetDirect configuration. To avoid making changes to your

configuration, remove the HP JetDirect card before performing a cold reset.
If possible, print a configuration page and a menu map to verify the current printer settings. Use the

information on these pages to reset the customer’s printer settings.

To perform a cold reset:
1 Print a configuration page and a menu map.
2 Turn on the printer while holding the G
3 When

COLD RESET

appears on the control panel display, release the G

key down.

O

key.

O

Clearing NVRAM

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

1 Turn off the printer.
2 Hold down the C
3 When

CLEANUP NVRAM

ANCEL JOB

key, and then turn on the printer.

appears on the control panel display, release the C

ANCEL JOB

key.

Initialization of NVRAM

Initialization of NVRAM should always be executed immediately after replacing the formatter board.
This procedure aligns the firmware with the formatter. Not initializing NVRAM could result in
deterioration of print quality.

CAUTION Initializing NVRAM will erase sever al of the memory settings (including page count, printer serial

number, and the event log).

Note Before initializing NVRAM, print a configuration page and a menu map to verify the current printer

settings. Use the information on these pages to reset the customer’s printer settings.

To initialize NVRAM

1 Print a configuration page and a menu map.
2 Turn off the printer.
3 Remove all formatter accessories (EIO cards, hard drive, DIMMs, etc.).
4 While turning on the printer, hold down S

control panel are lit.

5 Press C

display.

6 After initializing the NVRAM, use service mode to reenter the settings from the configuration

page.

EN Chapter 3 Printer operation 79

ANCEL JOB

, and then S

ELECT

. The

and C

ELECT

NVRAM INIT

ANCEL JOB

message appears on the control panel

until all of the lights on the

Initialization of the hard disk

To initialize the hard disk

1 Print a configuration page and a menu map.
2 Turn off the printer.
3 While turning on the printer, hold down S

control panel are lit.

4 Press M
5 Press S

-, and then V

ENU

.

ELECT

System configuration

MS-DOS system configuration

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

Parallel DOS commands

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

MODE LPT1: , , P

For MS-DOS version 4.0 and above, type:

ALUE

and C

ELECT

-.

ANCEL JOB

until all of the lights on the

MODE LPT1: , , B

Note This example assumes that you are using parallel printer port LPT1. If you are using LPT2 or LPT3,

replace LPT1 in the example with the printer port that you are using.
Since the mode command is an external MS-DOS command (a program named mode.com is run

when the mode command is 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.

After changing the Autoexec.bat file, restart the computer to initiate the changes.

80 Printer operation EN

4

Printer maintenance

Chapter contents

Cleaning the printer and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Using the printer cleaning page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Using the auto-cleaning page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Cleaning spilled toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Performing printer maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Reset maintenance count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Expected life of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

EN Chapter 4 Printer maintenance 81

Cleaning the printer and accessories

To maintain superior print quality and performance, thoroughly clean the printer and the paper­handling accessories:

after printing approximately 10 ,000 pages.

!

whenever print quality problems occur.

!

Also, run a cleaning page every time you change the toner cartridge.
Clean the outside surfaces of the printer and accessories with a water-dampened cloth. Clean the

inside parts as indicated in table 30 on page 83. Observe the warning and caution below.

WARNING! Before beginning these steps, turn the printer off and unplug all power cords to avoid shock hazard.

Be careful when cleaning around the fusing assembly area. It might be hot.

CAUTION To avoid permanent damage to the toner cartridge, do not use ammonia-based cleaners on or around

the printer.
Do not touch the transfer roller. Skin oils on the roller can cau se print quality d efects. If toner gets on

clothing, wipe it off with a dry cloth and wash the clothes in cold water. Hot water sets toner into f abric.

Figure 7. Location of the transfer roller – Do Not Touch!

82 Printer maintenance EN

Table 30. Cleaning the printer
Component Cleaning method/notes

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

ammonia-based cleaners.

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

paper particles from the paper path area, the registration
roller, and the toner cartridge cavity. Do not touch the
transfer roller with bare hands.

Paper pickup, feed, and
separation rollers

Tray 1 separation pad Use a dry, lint-free cloth.

Registration roller Use a dry, lint-free cloth.

Transfer roller Use a dry, lint-free cloth. DO NOT TOUCH the transfer

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

Use a water-dampened, lint-f ree cloth.

roller.

EN Chapter 4 Printer maintenance 83

Using the printer cleaning page

If toner specks appear on the front or back side of print jobs, follow the procedure below.
From the printer control panel, do the following:

1 Press M
2 Press I
3 Press S

until

ENU

TEM

ELECT

PRINT QUALITY MENU

until

CREATE CLEANING PAGE

to create the cleaning page.

appears.

appears.

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

Note In order for the cleaning page to work correctly, print the page on copier-grade paper (not bond or

rough paper).
You might need to create and process a cleaning page more than once. When toner has been

cleaned from the fuser assembly, shiny black spots will appear on the page’s black strip. If white
spots appear on the black strip, create another cleaning page.

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

Using the auto-cleaning page

The auto-cleaning page feature helps keep the fuser roller s clean, which maintains excellent output
quality. The auto-cleaning page feature is accessible through the control panel and is supported
through Web JetAdmin, as well. Once set up, the printer runs a cleaning page through the printer as
a separate job at the frequency requested with no further user intervention. The settings can be
changed or the feature can be turned off at any time.

Note Once the auto-cleaning page f eature is enabled, the printer automatica lly pulls plain letter- or A4-sized

media from a tra y. If the paper size or types are not av ailab le in the printer, a message appears in the
control panel display requesti ng the user to load media into the printer.

To override a paper load message, press G

, and then answer the questions on the control panel

O

display.

To set up the auto-cleaning page:

1 Press M
2 Press I
3 Press V
4 Press V
5 Press I

size to be used for cleaning.

6 Press S

Note The auto cleaning page takes about 2.5 minutes to process.

until

ENU

TEM

ALUE
ALUE

TEM

ELECT

PRINT QUALITY MENU

until

AUTO CLEANING PAGE

+ until

appears, and then press S

=ON

+ to select the auto cleaning frequency, and then press S

until

CLEANING PAGE SIZE=LETTER

to save the auto-cleaning settings.

appears.

appears.

.

ELECT

or A4, and then press V

.

ELECT

+ to select the paper

ALUE

84 Printer maintenance EN

Cleaning spilled toner

Defectiv e or w orn out toner cartridges can dev e lop leaks. Also, after a jam has occurred, there m ight
be some toner remaining on the rollers and guides inside the printer. The pages that print
immediately after the jam might pick up this toner.

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

EN Chapter 4 Printer maintenance 85

Performing printer maintenance

The printer maintenance cycle for this printer is every 200,000 pages. The kit contains the following
replacement parts:

one fuser

!

one transfer roller

!

one transfer roller tool

!

one pickup roller (for tray 1)

!

six feed and separation rollers (for trays 2, 3, and 4)

!

one pair of disposable glo ves

!

instructions

!

See the instructions included in the kit for detailed replacement procedures.
The maintenance kit can be ordered from the Customer Services and Support Center. To order the

maintenance kit, see page 270.

Table 31. Maintenance kit part numbers

Description Exchange no. Product no.

Maintenance kit (110 V) C8057-69001 C8057A
Maintenance kit (220 V) C8058-69001 C8058A

Reset maintenance count

The maintenance page count should be reset only after a main tenance kit has been installed.
This resets the maintenance counter so that the me ss ag e

appear after another 200,000 pages (default).
1 Hold down the - I

TEM

and - V

ALUE

keys.

2 Turn the printer on.
3 Wait for

RESET MAINTENANCE COUNT

to appear and then release both keys.

PERFORM PRINTER MAINTENANCE

will

86 Printer maintenance EN

Expected life of components

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

Table 32. Life of components
No. Part name Part number Expected life

1 Tray 1 pickup roller RG5-3718-000CN 100,000 pages (for tray 1)

2 Tray 1 separation pad RF5-3086-000CN 200,000 pages (for tray 1)

3 Tray 1 pickup assembly RG5-5084-000 CN 200,000 pages (for tray 1)

4 Feed and separation rollers

(trays 2, 3, and 4)

5 Fuser

110 V
220 V

6 Transfer roller RG5-5295-000CN 200,000 pages

7 Cooling fan RH7 -1442-000CN 25,000 hours

8 Duplexer exhaust fan RH7-1443-000CN 25,000 hours

RF5-3114-000CN 200,000 pages

RG5-5063-000CN RG5­5064-000CN

200,000 pages
200,000 pages

Note If an HP LaserJet 4100 series printer component is not listed above, the component should last the

life of the printer.

EN Chapter 4 Printer maintenance 87

88 Printer maintenance EN

5

Theory of operation

Chapter contents

Power supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

AC/DC power distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Overcurrent/overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

High-voltage power distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Toner-cartridge detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Cartridge memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Engine controller system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Engine controller board inputs and outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Laser/scanner drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Paper-motion monitoring and control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Solenoids, sensors, clutches, and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Engine test print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

PowerSave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Resolution Enhancement technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

CPU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Printer memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

DIMM slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

PJL overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

PML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Photosensitive drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Writing the image. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Developing the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Transferring the image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Image fusing/variable fusing temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Paper feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Clutches and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

EN Chapter 5 Theory of operation 89

Printing from tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Printing from tray 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Printing from the optional 500-sheet tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

Envelope feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Other controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Environmental detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Basic sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

90 Theory of operation EN

Power supply system

AC/DC power distribution

In this circuit, the AC power input from the power receptacle is converted into DC power. The DC
power is supplied to the loads.

The AC pow er is supplied to the lo w- v olt age po wer supply circuit in the en gine controller b oard when
the power switch (SW1) is turned on.

The AC power is converted into +24 VDC, +5 VDC, and +3.3 VDC in the circuit. The +24 VDC is
supplied to the main motor, scanner motor, solen oids, clutches , and to the high-v o ltage po we r supply
circuit. The +5 VDC is supplied to the laser and formatter, while +3.3 VDC is supplied to the sensors
and ICs on the engine controller board.

The +24 VDC is divided into +24 VA, which is constantly supplied from the low-voltage power supply
circuit, and +24 VB, which is interrupted when the interlock switch (SW101) is turned off by opening
the top cover. The +24 VB is supplied to the high-voltage power supply circuit on the engine
controller board and relay (RL102). It also functions as a door-open detection signal (/DOPEN), so
that the CPU detects an open door.

Figure 8. Low-voltage power supply circuit

EN Chapter 5 Theory of operation 91

Overcurrent/overvoltage protection

If a short-circuit or other problem on the load side causes an excessive current flow or generates
abnormal voltage, the overcurrent/overvoltage protection systems automatically cut off the output
voltage to protect the power supply circuit.

If the overcurrent or overvoltage protection system are activated and the power supply circuit does
not generate DC vo lt age, it is necessary to turn the power off, correct the problem, and then turn the
printer on again.

The circuit has two fuses (FU1, FU2), which break and cut off the output voltage if overcurrent flows
through the AC line.

Fuser over-temperature protection

The fusing heater safety circuit is locat ed on the eng ine controlle r board and const antly monito rs the
fusing temperature.

To protect the fuser from excessive temperatures, the printer has the following three protective
functions:

The CPU monitors the voltage of the FSRTH1 and FSRTH2 thermistor signals. If the fuser

!

temperature reaches 240° C (464° F), then the CPU turns off the relay (RL101) to interrupt the
power to the fusing heater.

If the temperature of the fusing heater continues to rise abnormally and the temperature of the

!

thermal switch (TP101) exceeds about 250° C (482° F), TP101 opens up to cut off the power
supply to the fusing heater.

The power supply on the coil side of RL101 and RL102 is connected to +24 VB. When the top

!

cover is opened, the power supply to RL101 and RL102 is cut off and the relay is turned off.

92 Theory of operation EN

High-voltage power distribution

Figure 9. Engine controller board

In response to the instructions from the microprocessor (CPU:IC502) on the engine controller board,
the high-voltage power supply circuit applies high voltage to the primary charging roller, developing
cylinder, transfer roller, and the fuser film unit.

The circuit also detects the toner level and the presence or absence of the toner cartridge.

EN Chapter 5 Theory of operation 93

Toner-cartridge detection

This printer has cartridge detection and toner-level detection.
For the cartridge detection, the CPU checks the voltage of the cartridge detection signal (CRGSNS),

which is a feedback signal for the primary charging. The CPU checks the voltage of the CRGSNS
signal several times while the primary charging AC bias is applied to the primary charging roller.
When the average of the voltage is 1 V or less, the CPU recognizes a "cartridge out" situation.

Cartridge memory

This memory is built-in EEPROM in the cartridge, so that the printer is capable of detecting the
cartridge conditions.

Read/write of the cartridge memory is performed by the memory controller board through the
antenna unit. The cartridge information read by the memory controller is updated by the engine
controller and written to the memory. The read/write of the memory is implemented when the
memory controller board receives a command from the engine controller board.

The engine controller instructs the memory controller to perform read/write at the following timing.

Reading timing

When the power is turned on

!

When the door is closed

!

When the engine controller receives a command from the formatter

!

Writing timing

When printing is completed

!

When the engine controller receives a command from the formatter

!

The memory data sent from the memory controller also contains the error status that has occurred
during read/write operation. When error status is sent, the engine controller attempts to read the
operation four times. If the error status is not cleared after the operation, the engine contro ller
determines one of the following error conditions: sub-CPU failure, memory data abnormality, or
memory access abnormality.

CAUTION Do not remove the toner cartridge when the top cover interlock is overridden. Cartridge memory will

be disabled.

Figure 10. Cartridg e memory

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Engine controller system

The following systems and functions are controlled by the engine controller board:

DC power distribution (+3.3 V DC, +5 V DC, +24 VA)

!

Laser and scanner drive

!

Paper-motion monitoring and control (photosensors and flags)

!

Clutches (tray pickup and tray 1 feed)

!

Engine test

!

Motors (main drive, scanner, and fans)

!

Printer operations are controlled by the CPU on the engine controller board. When you press the
power button, the printer enters standby mode until it receives a print command or image data. The
CPU then sends the signals to drive internal components, such as laser diodes, motors, and
solenoids.

Figure 11. Engine controller board

EN Chapter 5 Theory of operation 95

Engine controller board inputs and outputs

Figure 12. Engine controller board I/O (1 of 5)

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Figure 13. Engine controller board I/O (2 of 5)

EN Chapter 5 Theory of operation 97

Figure 14. Engine controller board I/O (3 of 5)

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