HP LaserJet 4100mfp Service Manual

hp LaserJet

4100mfp 4101mfp

service

addendum

hp LaserJet 4100mfp series

service adden du m

Publication number C9148-90909

Second edition, April 2002

Quick reference service PIN code: 04410002

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

Adobe

, Acrobat®, PostScript™, and the Acrobat logo are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and/or other countries/regions.

Microsoft Windows trademarks of Microsoft Corp.

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

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

ENERGY STAR

registered service mark of the United States Environmental Protection Agency.

,MS-DOS, and

are U.S. registered

is a U.S.

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

List of figures

List of tables

1 Product Information

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Product configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

HP LaserJet 4100mfp (C9148A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

HP LaserJet 4101mfp (C9149A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Product speed and throughput . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Image quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Paper handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Copying capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Expandable design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Special considerations for ADF documents. . . . . . . . . . . . . . . . . . . . .18

Supported media for the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Model and serial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Back view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2 Service approach

Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Major assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Contact HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

World Wide Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

HP support assistant CD-ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

HP authorized resellers and support . . . . . . . . . . . . . . . . . . . . . . . . . .25

HP service agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3 Operation

Using the ADF unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

General guidelines for using the ADF unit . . . . . . . . . . . . . . . . . . . . .28

Using the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

General guidelines for using the glass. . . . . . . . . . . . . . . . . . . . . . . . .29

Using the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

C9148-90909 Table of contents 3

Layout and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Walk-up copy display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Status bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Configure device, diagnostic, and service menus . . . . . . . . . . . . . 32

Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4 Maintenance

Cleaning the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

General guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Running the cleaning page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Cleaning the ADF delivery guide (clear mylar strip) . . . . . . . . . . . . . . 37

User-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Replacing user-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Updating product firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Downloading a remote firmware update . . . . . . . . . . . . . . . . . . . . . . 41

Installing the update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

RFU installation messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Using HP Web JetAdmin (single update) . . . . . . . . . . . . . . . . . . . 42

Using HP Web JetAdmin (multiple or unattended update) . . . . . . 42

Windows parallel connection (local printer) . . . . . . . . . . . . . . . . . 43

Windows parallel connection (network printer) . . . . . . . . . . . . . . . 43

Troubleshooting RFU installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

RFU installation error messages . . . . . . . . . . . . . . . . . . . . . . . . . 44

Performing hard-drive disk initialization . . . . . . . . . . . . . . . . . . . . . . . 45

Cold Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

NVRAM initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Performing automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Performing manual calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Lead adjustment for the ADF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Center adjustment for the ADF . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Leading-edge adjustment for the glass . . . . . . . . . . . . . . . . . . . . . 49

Side-edge adjustment for the glass . . . . . . . . . . . . . . . . . . . . . . . . 50

5 Theory of operation

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Document transportation process. . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Document exposure system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Light-conversion process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

General descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Scan-unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

ADF components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Copy processor board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

CPB terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Typical scanning-process flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Scanner controller board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

ADF motor circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Optical-unit motor circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Scan-unit intake-fan motor circuit . . . . . . . . . . . . . . . . . . . . . . . . . 61

4 Table of contents C9148-90909

Scanner controller board connectors . . . . . . . . . . . . . . . . . . . . . . .62

Intermediate PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Overcurrent and overvoltage protection . . . . . . . . . . . . . . . . . . . . .63

Power-supply block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Optical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Inverter PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Scanning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

CCD driver PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

ADF document-feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

ADF cover sensor (PS10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Document-detect sensor (PS2) . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Leading-edge sensor (PS1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

ADF motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Document pickup process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Document jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Scan-unit intake fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

6 Removal and replacement

Removal and replacement strategy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Required tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Before performing service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

After performing service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Common fasteners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Parts removal order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

User-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

ADF input tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

ADF pickup roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

ADF separation roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

ADF separation pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

ADF unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Assemblies and covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Control-panel door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Scan-unit right-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Copy processor board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Scan-unit left-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Intake fan filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Formatter cage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Scan unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Printing-unit top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Scanning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Optical unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

ADF door open sensor (PS10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

Optical-unit drive gear/motor assembly . . . . . . . . . . . . . . . . . . . . . . . .99

Scan-unit power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Inverter PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Scanner controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Intake fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

C9148-90909 Table of contents 5

7 Troubleshooting

Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Preliminary operating checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Media condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Unit condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Basic troubleshooting process flow. . . . . . . . . . . . . . . . . . . . . . . . . . 113

Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Power-on defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Troubleshooting with the control panel. . . . . . . . . . . . . . . . . . . . . . . . . . 117

Control-panel display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Event log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Print the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Interpret the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Display the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Control-panel messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Troubleshooting with the copy processor board . . . . . . . . . . . . . . . . . . 124

User-level and service-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 126

ADF paper-path test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

To print a paper-path test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Diagnostic tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

To perform a diagnostic test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Service-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

To access the service menu (PIN code: 04410002) . . . . . . . . . . 127

Jam troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

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

Clearing repeated ADF jams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Creating a customer print job . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Evaluate the information pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Configuration-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

JetDirect page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

JetDirect-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Supplies status page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Supplies-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

File directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

File-directory-page elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Image-formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Checking the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

EconoMode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Image-defect tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Media troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Isolate a paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Use the straightest paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Isolate the source of the jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Determine where media jams occur . . . . . . . . . . . . . . . . . . . . . . 140

Is the MFP is misfeeding or creating multifeed jams . . . . . . . . . . 140

Isolate a media brand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Isolate a media type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

6 Table of contents C9148-90909

8 Parts and diagrams

Ordering parts, supplies and getting support. . . . . . . . . . . . . . . . . . . . . .144

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Related documentation and software . . . . . . . . . . . . . . . . . . . . . . . .144

Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Common hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

HP Laserjet 4100 differences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

How to use the parts lists and diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 147

Parts lists and diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148

Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

Index

C9148-90909 Table of contents 7

8 Table of contents C9148-90909

List of figures

Figure 1. Model and serial number label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 2. Product parts (front view; right side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 3. Optical-unit lock (front view; left side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4. Product parts (back view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 5. Major assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 6. Using the ADF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 7. Using the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 8. Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 9. Navigation buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 10. Top-level control-panel menu display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 11. MFP menu map 1 of 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 12. MFP menu map 2 of 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 13. Open the delivery-guide cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 14. Remove the clear plastic sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 15. Replace the clear, plastic sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 16. Sample calibration target page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 17. Manual calibration registration lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 18. MFP block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Figure 19. Scan-unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 20. ADF-unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Figure 21. Copy processor board components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Figure 22. Copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 23. Scanner controller board connectors (shield off). . . . . . . . . . . . . . . . . . . . . . . . . 62

Figure 24. Power-supply block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Figure 25. Optical unit block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 26. Scanning process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 27. Signal conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Figure 28. Document transport path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Figure 29. Release the ADF input-tray hinge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Figure 30. Remove the ADF input tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Figure 31. Release the roller shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Figure 32. Remove the roller shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Figure 33. Remove the ADF pickup roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Figure 34. Remove the ADF separation roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Figure 35. Remove the ADF separation pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Figure 36. Replace the ADF separation pad spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Figure 37. Disconnect the cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Figure 38. Remove the ADF unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Figure 39. Remove the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Figure 40. Remove the control-panel wire-harness cover . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Figure 41. Disconnect the control-panel grounding strip . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Figure 42. Release the control-panel door-support pins . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Figure 43. Remove the control-panel door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Figure 44. Remove the product serial- and model-number panel . . . . . . . . . . . . . . . . . . . . 81

Figure 45. Remove the right-side cover screw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Figure 46. Remove the scan-unity right-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Figure 47. Disconnect the ADF cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Figure 48. Disconnect the high-speed copy connect cable . . . . . . . . . . . . . . . . . . . . . . . . . 83

Figure 49. Remove the left-side screw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

C9148-90909 List of figures 9

Figure 50. Gently pry the top edge of the left-side cover. . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Figure 51. Remove the scan-unit left-side cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Figure 52. Remove the intake filter.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Figure 53. Remove the formatter-cage cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Figure 54. Slide the formatter cage toward the back of the product . . . . . . . . . . . . . . . . . . 87

Figure 55. Disconnect the formatter high-speed copy connect cable . . . . . . . . . . . . . . . . . 88

Figure 56. Secure the optical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Figure 57. Disconnect the CPB cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Figure 58. Disconnect the scan unit cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Figure 59. Remove the scan unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Figure 60. Remove the top-cover rear-mounting screws . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Figure 61. Remove the printing-unit top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Figure 62. Remove the glass mounting screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Figure 63. Remove the glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Figure 64. Note the cable routing pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Figure 65. Remove the scanning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Figure 66. Scanning-lamp wire harness routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Figure 67. Release the optical unit ribbon cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Figure 68. Optical-unit ribbon-cable clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Figure 69. Release the tension-spring bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Figure 70. Remove the optical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Figure 71. Optical-unit drive-belt tension bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Figure 72. Optical-unit ribbon cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Figure 73. Remove the ADF door open sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Figure 74. Remove the optical-unit cover plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Figure 75. Remove the optical-unit drive gear/motor assembly . . . . . . . . . . . . . . . . . . . . . 100

Figure 76. Remove the power-supply shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Figure 77. Remove the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Figure 78. Remove the inverter PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Figure 79. Unplug the connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Figure 80. Grasp the scanner controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Figure 81. Remove the scanner controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Figure 82. Remove the fan mounting screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Figure 83. Remove the intake fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Figure 84. Correctly orient the intake fan and bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Figure 85. Basic troubleshooting flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Figure 86. Sample MFP event-log page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Figure 87. Control-panel display of the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Figure 88. Copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Figure 89. Sample configuration page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Figure 90. Sample JetDirect page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Figure 91. Sample supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Figure 92. Sample usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Figure 93. Sample file-directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Figure 94. Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Figure 95. Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Figure 96. Top-cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Figure 97. Scan unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Figure 98. Scan unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Figure 99. Glass, formatter,CPB, and cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Figure 100. ADF unit (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Figure 101. ADF unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

10 List of figures C9148-90909

List of tables

Table 1. Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 2. Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 3. ADF/flatbed-unit acoustical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 4. Skew specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 5. Supported paper sizes and weights for the ADF . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 6. General cleaning guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 7. User-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Table 8. Print-unit maintenance kit parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 9. Copy processor board LEDs (initialization sequence) . . . . . . . . . . . . . . . . . . . . . 59

Table 10. Scanner controller board connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 11. Low-voltage components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Table 12. Common fasteners found in the MFP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Table 13. Parts-removal tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Table 14. Primary steps for troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Table 15. Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Table 16. Power malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Table 17. Firmware-update event-log errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Table 18. Control-panel error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 19. Troubleshooting copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Table 20. Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Table 21. General ADF jam troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Table 22. Image-quality checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Table 23. Image defects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Table 24. Technical support websites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Table 25. Accessories and supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Table 26. Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Table 27. Screws used in the ADF unit and scan unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Table 28. HP LaserJet 4100 differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Table 29. Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Table 30. Top-cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Table 31. Scan unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Table 32. Scan unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Table 33. Glass, formatter, CPB, and cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Table 34. ADF unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Table 35. ADF unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Table 36. Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Table 37. Numerical parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

C9148-90909 List of tables 11

12 List of tables C9148-90909

1 Product Information

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Product configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

HP LaserJet 4100mfp (C9148A). . . . . . . . . . . . . . . . . . . . . . . . . . . 14

HP LaserJet 4101mfp (C9149A). . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Product speed and throughput . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Image quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Paper handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Copying capability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Expandable design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Special considerations for ADF documents . . . . . . . . . . . . . . . . . . 18

Supported media for the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Model and serial numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

C9148-90909 1 Product Information 13

Introduction

With the HP LaserJet 4100 series multifunction printer (MFP), a workgroup can print, make copies, and send digital documents using a single device. Multiple functions can occur simultaneously in the MFP.

This service manual is an addendum to the HP LaserJet 4100 series printer service manual. The HP LaserJet 4100mfp can be upgraded to the HP LaserJet 4101mfp by ordering the

following parts:

• one additional 500-sheet media input tray (C8055A)

• duplex printing accessory (for automatic two-sided printing (C8054A)

• digital sending software (C7140A)

Note The terminology used in this manual contains minor differences from the HP LaserJet 4100 series

printer service manual. These differences reflect changes made since the publication of the HP LaserJet 4100 series printer service manual.

Product configurations

The HP LaserJet 4100mfp series is available in two configurations.

HP LaserJet 4100mfp (C9148A)

● 64 MB RAM; 5 GB (or larger) hard disk for RIP ONCE, transmit and scan once; job retention;

and font, form, and signature storage

● HP Jetdirect 10/100 Base-TX print server card for network connection

● 100-sheet media input tray

● 500-sheet media input tray

● automatic document feeder (ADF) with 30-sheet capacity

● embedded scan to e-mail

HP LaserJet 4101mfp (C9149A)

● all of the features of the HP LaserJet 4100mfp listed above

● one additional 500-sheet media input tray

● a duplex printing accessory (for automatic two-sided printing)

● HP digital-sending service software version 3.0 (or later)

• full send-to-e-mail capability

• SMTP mail service support

• Lightweight Directory Access Protocol (LDAP) compatibility

Note The HP LaserJet 4101mfp is available only in the United States and Canada.

14 Product Information C9148-90909

Product features

Product speed and throughput

● copying of letter-size media at 25 pages per minute (ppm) or A4-size media at 24 ppm

● monochrome scanning of letter-size originals at 25 ppm or A4-size originals at 24 ppm, and

color scanning at 8 ppm

● instant-on fuser

● scan-once copying

● RIP ONCE copy capability

● scan-ahead capability to start copying or sending while the printer is busy

● monthly duty cycle of 150,000 pages

Image quality

● FastRes 1200: 1200 dots per inch (dpi) print quality for fast, high-quality printing of business

text and graphics

● copying and scanning at a resolution of 600 pixels per inch (ppi)

● up to 256 levels of gray for smooth, photo-like images

● HP print cartridge for crisp, sharp output

Paper handling

● HP LaserJet 4100mfp: the 100-page and 500-page input trays are standard

● HP LaserJet 4101mfp: the 100-page and two 500-page input trays are standard

● capable of copying on a wide range of media sizes, types, and weights

● expandable to hold up to 1600 sheets of media

● standard 250-sheet face-down output

● duplexing (standard on the HP LaserJet 4101mfp)

● glass, which can accommodate media sizes up to letter/A4 size

● ADF with 30-page capacity to handle media sizes up to legal size

Copying capability

● easy-to-use copy functionality

● document collation

● multiple copies

● multiple pages per sheet (n-up)

● document reduction and enlargement

• ADF: 25 percent to 200 percent in one-percent increments (in ten-percent increments when the

• Flatbed glass: 25 percent to 400 percent in one-percent increments (in ten-percent increments when the

● automatic page-to-page enlargement or reduction

● image-quality improvement through background removal, best-quality mode, and contrast

adjustment

REDUCE or ENLARGE button is held down)

C9148-90909 1 Product Information 15

Expandable design

● stackable 500-sheet trays (up to two additional trays can be added to the HP LaserJet

4100mfp, and one additional tray can be added to the HP LaserJet 4101mfp)

● duplex printing accessory (standard with the HP LaserJet 4101mfp)

● HP Fast InfraRed printing adapter (FIR port)

● digital-sending service software (standard with the HP LaserJet 4101mfp)

● expandable memory through installation of additional dual inline memory modules (DIMMs)

Product specifications

Table 1. Physical specifications

4100mfp (print unit, scan unit, and ADF unit)

Height 637 mm (25.1 inches) Depth 520.7 mm (20.5 inches) Width 805 mm (31.7 inches) Weight 26 kg (56.5 pounds)

Scan unit only

Height 140 mm (5.6 inches) Depth 540 mm (21.6 inches) Width 415 mm (16.6 inches) Weight approximately 5 kg (11.1 pounds)

ADF unit only

Height 152 mm (6.1 inches) Depth 344 mm (13.8 inches) Width 415 mm (16.6 inches) Weight approximately 3 kg (6.4 pounds)

Table 2. Performance

Category Specification

Scanning speed (ADF mode) 139 mm/second (5.6 inches/second) Scanning speed (flatbed mode) 69 mm/second (2.8 inches/second) Copy speed 25 ppm (letter)

24 ppm (A4)

Copy resolution 600 by 600 ppi optical Digital send resolution 600 by 600 ppi optical

16 Product Information C9148-90909

Table 3. ADF/flatbed-unit acoustical specifications

Category Specification

Sound Po wer Level, L (1 bel = 10 decibels)

WAd

● Scanning: 6.7 dB (A)

● Standby: 5.2 dB (A)

Note Testing per International Standard Organization (ISO) 9296.

Note “Operating” means that the product is copying and printing continuously at 25 ppm. Values are

subject to change. See http://www.hp.com/lj4100mfp for current information.

Table 4. Skew specifications

Print unit

Tolerance Cut paper Envelope

Skew 1.5 mm (.03 inch) over 260 mm (10.24

inches) length---simplex

1.50 mm (.03 inch) over 260 mm (10.24 inches) length---duplex

First line leading edge

Left margin 5.0 mm (.20 inch) +/- 1.5 mm (.06 inch) 15mm (.59 inch) +/- 4.5 mm (.18 inch) Text stretching 1 percent for cut sheet---simplex

6.0 mm (.24 inch) +/- 2mm (.08 inch) 15mm (.59 inch) +/- 4.5 mm (.18 inch)

1 percent for cut sheet---duplex

6.0mm (.24 inch) over 220mm (8.66 inches) length

None

Scan unit

Tolerance ADF Glass

Skew <= 1 percent <= 1 percent Leading edge +/- 2 mm (.08 inch) +/- 1 mm (.04 inch) Left margin +/- 1 mm (.04 inch) +/- 1 mm (.04 inch) Parallel (vertical

and horizontal) Image length and

width

+/- 0.6 percent +/- 0.6 percent

+/- 1.2 percent +/- 1 percent

C9148-90909 1 Product Information 17

Media specifications

Note This section refers to the MFP only. See the HP LaserJet 4100 series printer service manual for

printing specifications, or see the Print Media Guide for the HP LaserJet printer family requirements.

Table 5. Supported paper sizes and weights for the ADF

Size Dimensions Weight

Letter 216 by 279 mm

(8.5 by 11 inches)

A4 210 by 297 mm

(8.3 by 11.7 inches)

Legal 216 by 356 mm

(8.5 by 14 inches)

50 to 105 g/m (13 to 28 lb)

for general

Custom sizes Minimum:

148.5 by 210 mm (5.9 by 8.3 inches Maximum:

215.9 by 355.6 mm (8.5 to 14 inches)

60 to135 g/m2 (16 to 36 lb)

Special considerations for ADF documents

● Documents must be free of tears or perforations.

● Documents must be square or rectangular and in good condition (not fragile or worn).

● Documents must be free of glue, correction fluid, or wet ink.

● Remove sticky notes, tape flags, staples, and paper clips.

● Multipart forms cannot be used in the ADF.

Supported media for the glass

The glass can accommodate the following types of media:

● letter- or A4-size and smaller originals, books, manuals, receipts, and similar documents

● irregular and worn documents, stapled documents, and photographs

● multiple-page letter-size documents

18 Product Information C9148-90909

Model and serial numbers

The model number and serial number are listed on an identification label located underneath the control panel door.

The serial number contains information about the country/region of origin, product revision level, production code, and production number of the product.The label also contains power rating and regulatory information.

Figure 1. Model and serial number label

Note If the control panel fails, the model and serial number label panel must be removed (see “Control-

panel door” on page 79) and installed on the replacement control panel.

C9148-90909 1 Product Information 19

Product overview

Front view

Figure 2. Product parts (front view; right side)

1 automatic document feeder (ADF) input (with sliding media guides) 2 ADF cover (lifts for access to the glass) 3 control-panel door (provides access to the print cartridge; serial and model numbers are

located on a panel underneath the door)

4 control panel 5 output bin (for printed output and copies)

Figure 3. Optical-unit lock (front view; left side)

6 optical-unit lock

20 Product Information C9148-90909

Back view

Figure 4. Product parts (back view)

1 ADF connector cable 2 straight-through output door 3 power connection (from power source to print unit) 4 hard disk 5 HP JetDirect card 6 memory access door (more than one DIMM can be installed)

7 power jumper cable (from print unit to scan unit) 8 ADF output bin

C9148-90909 1 Product Information 21

22 Product Information C9148-90909

2 Service approach

Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Major assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Contact HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Contact HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

World Wide Web. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

HP support assistant CD-ROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

HP authorized resellers and support . . . . . . . . . . . . . . . . . . . . . . . 25

HP service agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2 Service approach 23

Service approach

Repair of the printer normally begins with a three-step process: 1 Isolate the problem to the major system (the host computer, the network and/or server, or

MFP major assemblies).

2 Determine whether the problem is located in one of the paper-handling devices or in the

product engine.

3 Troubleshoot the problem using the procedures in the troubleshooting chapter of this

manual. See “Troubleshooting” on page 109.

Major assemblies

When a faulty part is identified, repair is usually accomplished by assembly-level replacement of field replaceable units (FRUs). Some mechanical assemblies can be repaired at the subassembly level. Hewlett-Packard does not support replacement of components on the printed circuit boards (PCBs).

Figure 5. Major assemblies

1 automatic document feed (ADF) unit 2 scan unit 3 print unit

24 Servic e appr o ach C9148-90909

Contact HP

World Wide Web

Printer drivers, updated HP printer software, and product and support information can be obtained from the following websites:

● U.S., http://www.hp.com/support/lj4100

● Europe, http://www.hp.com/support/lj4100

● China, ftp://www.hp.com.cn/support/lj4100

● Japan, ftp://www.jpn.hp.com/support/lj4100

● Korea, http://www.hp.co.kr/support/lj4100

● Taiwan, http://www.hp.com.tw/support/lj4100,

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

HP support assistant CD-ROM

This support tool offers a comprehensive online information system designed to provide technical and product information about Hewlett-Packard products. T o subscribe to this quarterly service in the U.S. or Canada, call (1) (800) 457-1762. In Hong Kong, Indonesia, Malaysia, or Singapore, call Mentor Media at (65) 740-4477.

HP authorized resellers and support

To locate HP authorized resellers and support, call (1) (800) 243-9816 in the U.S. or (1) (800) 387-3867 in Canada

HP service agreements

Call (1) (800) 743-8305 in the U.S. or (1) (800) 268-1221 in Canada.

C9148-90909 2 Service approach 25

26 Servic e appr o ach C9148-90909

3 Operation

Using the ADF unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

General guidelines for using the ADF unit . . . . . . . . . . . . . . . . . . . 28

Using the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

General guidelines for using the glass . . . . . . . . . . . . . . . . . . . . . . 29

Using the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Layout and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Walk-up copy display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Status bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Configure device, diagnostic, and service menus . . . . . . . . . . 32

Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3 Operation 27

Using the ADF unit

The automatic document feeder (ADF) is a fast, convenient way to feed multiple-page originals for copying or digital-sending. You can load the ADF with as many as 30 sheets of paper. The ADF accepts documents that meet the following specifications:

● single-sided or double-sided originals

● documents on standard letter-size, A4-size, and legal-size paper

● documents ranging in size from 148.5 by 210.0 mm (5.9 by 8.3 inches) to 215.9 by

355.6 mm (8.5 by 14.0 inches)

● documents ranging in weight from 50 to 105 g/m

● documents that are free of tears or perforations

● documents that are square or rectangular and in good condition (not fragile or worn)

● documents that are free of glue, correction fluid, wet ink, sticky notes, tape flags, staples, or

paper clips

CAUTION Do not use multipart forms.

The ADF transports the original document through the ADF paper path. Copies made using the ADF are delivered to the output bin beneath the scan unit.

General guidelines for using the ADF unit

(16 to 28lb)

Figure 6. Using the ADF

Note The source documents must be placed in the ADF input with the side you intend to copy facing up.

1 Before placing documents in the ADF, prepare the documents by doing the following:

• flatten curls or wrinkles

• remove staples, paper clips, sticky notes, and similar materials

2 Place documents in the ADF input tray. 3 On the control panel, select the sending or copying options you want to use. See the “Walk-

up copying” and “Sending to e-mail ” sections in the use guide for information about these functions.

4 After making your selections, press

START. Copies are sent to the output bin beneath the

scan unit.

5 When the scan is complete, remove the original document from the ADF output.

28 Operation C9148-90909

+ 146 hidden pages