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hp LaserJet 4100mfp 4101mfp

service addendum

hp LaserJet 4100mfp series

service addendum

Copyright Information © 2002 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 C9148-90909 Second edition, April 2002

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®, PostScriptTM, and the Acrobat logo are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and/or other countries/regions. Microsoft®,MS-DOS, and Windows® are U.S. registered trademarks of Microsoft Corp. NetscapeTM is a U.S. trademark of Netscape Communications Corporation. TrueTypeTM is a U.S. trademark of Apple Computer, Inc.
® ENERGY STAR is a U.S. registered service mark of the United States Environmental Protection Agency.

Quick reference service PIN code: 04410002

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

Table of contents

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Walk-up copy display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configure device, diagnostic, and service menus . . . . . . . . . . . . . Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30 31 31 31 32 32 33

4 Maintenance
Cleaning the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Running the cleaning page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning the ADF delivery guide (clear mylar strip) . . . . . . . . . . . . . . User-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing user-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . Updating product firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Downloading a remote firmware update . . . . . . . . . . . . . . . . . . . . . . Installing the update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RFU installation messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using HP Web JetAdmin (single update) . . . . . . . . . . . . . . . . . . . Using HP Web JetAdmin (multiple or unattended update) . . . . . . Windows parallel connection (local printer) . . . . . . . . . . . . . . . . . Windows parallel connection (network printer) . . . . . . . . . . . . . . . Troubleshooting RFU installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . RFU installation error messages . . . . . . . . . . . . . . . . . . . . . . . . . Performing hard-drive disk initialization . . . . . . . . . . . . . . . . . . . . . . . Cold Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NVRAM initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performing automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performing manual calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead adjustment for the ADF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Center adjustment for the ADF . . . . . . . . . . . . . . . . . . . . . . . . . . . Leading-edge adjustment for the glass . . . . . . . . . . . . . . . . . . . . . Side-edge adjustment for the glass . . . . . . . . . . . . . . . . . . . . . . . . 36 36 37 37 39 39 41 41 41 41 42 42 43 43 44 44 45 45 46 47 47 48 48 49 49 50

5 Theory of operation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Document transportation process . . . . . . . . . . . . . . . . . . . . . . . . . . . . Document exposure system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Light-conversion process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan-unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copy processor board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CPB terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Typical scanning-process flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . Copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanner controller board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF motor circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optical-unit motor circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan-unit intake-fan motor circuit . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table of contents 52 52 52 52 53 54 55 56 57 57 58 59 61 61 61 61 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

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Table of contents 5

7 Troubleshooting
Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preliminary operating checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Media condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unit condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Basic troubleshooting process flow. . . . . . . . . . . . . . . . . . . . . . . . . . Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power-on defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting with the control panel. . . . . . . . . . . . . . . . . . . . . . . . . . Control-panel display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Print the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interpret the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Display the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control-panel messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting with the copy processor board . . . . . . . . . . . . . . . . . . User-level and service-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . ADF paper-path test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . To print a paper-path test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . To perform a diagnostic test . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service-level diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . To access the service menu (PIN code: 04410002) . . . . . . . . . . Jam troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clearing repeated ADF jams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Creating a customer print job . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Evaluate the information pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuration-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . JetDirect page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . JetDirect-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supplies status page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supplies-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . File directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . File-directory-page elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image-formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EconoMode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image-defect tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Media troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Isolate a paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Use the straightest paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . Isolate the source of the jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . Determine where media jams occur . . . . . . . . . . . . . . . . . . . . . . Is the MFP is misfeeding or creating multifeed jams . . . . . . . . . . Isolate a media brand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Isolate a media type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 112 112 112 112 113 114 116 117 117 117 117 118 119 120 124 126 126 126 126 126 127 127 127 128 128 129 129 130 130 130 132 132 133 133 134 135 135 136 137 137 138 140 140 140 140 140 140 141 141 142

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. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Figure 49. C9148-90909

Model and serial number label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product parts (front view; right side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optical-unit lock (front view; left side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product parts (back view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Major assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the ADF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Navigation buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top-level control-panel menu display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MFP menu map 1 of 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MFP menu map 2 of 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open the delivery-guide cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the clear plastic sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace the clear, plastic sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample calibration target page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual calibration registration lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MFP block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan-unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF-unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copy processor board components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanner controller board connectors (shield off). . . . . . . . . . . . . . . . . . . . . . . . . Power-supply block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optical unit block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanning process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Document transport path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Release the ADF input-tray hinge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the ADF input tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Release the roller shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the roller shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the ADF pickup roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the ADF separation roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the ADF separation pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace the ADF separation pad spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect the cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the ADF unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the print cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the control-panel wire-harness cover . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect the control-panel grounding strip . . . . . . . . . . . . . . . . . . . . . . . . . . . Release the control-panel door-support pins . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the control-panel door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the product serial- and model-number panel . . . . . . . . . . . . . . . . . . . . Remove the right-side cover screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the scan-unity right-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect the ADF cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect the high-speed copy connect cable . . . . . . . . . . . . . . . . . . . . . . . . . Remove the left-side screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19 20 20 21 24 28 29 30 31 31 33 34 37 38 38 47 48 54 55 56 57 59 62 64 65 65 66 67 73 73 74 74 75 76 77 77 78 78 79 79 80 80 81 81 82 82 83 83 84 List of figures 9

Figure 50. Figure 51. Figure 52. Figure 53. Figure 54. Figure 55. Figure 56. Figure 57. Figure 58. Figure 59. Figure 60. Figure 61. Figure 62. Figure 63. Figure 64. Figure 65. Figure 66. Figure 67. Figure 68. Figure 69. Figure 70. Figure 71. Figure 72. Figure 73. Figure 74. Figure 75. Figure 76. Figure 77. Figure 78. Figure 79. Figure 80. Figure 81. Figure 82. Figure 83. Figure 84. Figure 85. Figure 86. Figure 87. Figure 88. Figure 89. Figure 90. Figure 91. Figure 92. Figure 93. Figure 94. Figure 95. Figure 96. Figure 97. Figure 98. Figure 99. Figure 100. Figure 101.

Gently pry the top edge of the left-side cover. . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the scan-unit left-side cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the intake filter.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the formatter-cage cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Slide the formatter cage toward the back of the product . . . . . . . . . . . . . . . . . . Disconnect the formatter high-speed copy connect cable . . . . . . . . . . . . . . . . . Secure the optical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect the CPB cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect the scan unit cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the scan unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the top-cover rear-mounting screws . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the printing-unit top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the glass mounting screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note the cable routing pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the scanning lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scanning-lamp wire harness routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Release the optical unit ribbon cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optical-unit ribbon-cable clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Release the tension-spring bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the optical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optical-unit drive-belt tension bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optical-unit ribbon cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the ADF door open sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the optical-unit cover plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the optical-unit drive gear/motor assembly . . . . . . . . . . . . . . . . . . . . . Remove the power-supply shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the inverter PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unplug the connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grasp the scanner controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the scanner controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the fan mounting screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remove the intake fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Correctly orient the intake fan and bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Basic troubleshooting flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample MFP event-log page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control-panel display of the event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample configuration page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample JetDirect page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample file-directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top-cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glass, formatter,CPB, and cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

84 85 86 87 87 88 89 89 90 90 91 91 92 92 93 94 94 95 95 96 96 97 97 98 99 100 101 102 103 104 105 105 106 107 107 113 118 119 124 131 132 133 134 135 142 148 150 152 154 156 158 160

10 List of figures

C9148-90909

List of tables

Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Table 32. Table 33. Table 34. Table 35. Table 36. Table 37.

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF/flatbed-unit acoustical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Skew specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supported paper sizes and weights for the ADF . . . . . . . . . . . . . . . . . . . . . . . . General cleaning guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . User-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Print-unit maintenance kit parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copy processor board LEDs (initialization sequence) . . . . . . . . . . . . . . . . . . . . . Scanner controller board connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Low-voltage components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common fasteners found in the MFP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts-removal tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Primary steps for troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firmware-update event-log errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control-panel error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting copy processor board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General ADF jam troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image-quality checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical support websites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessories and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screws used in the ADF unit and scan unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP LaserJet 4100 differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top-cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scan unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glass, formatter, CPB, and cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF unit (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADF unit (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16 16 17 17 18 36 39 40 59 62 63 71 72 111 114 116 119 120 125 127 128 136 138 144 145 145 146 146 149 151 153 155 157 159 161 162 164

C9148-90909

List of tables 11

12 List of tables

C9148-90909

1

Product Information

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP LaserJet 4100mfp (C9148A). . . . . . . . . . . . . . . . . . . . . . . . . . . HP LaserJet 4101mfp (C9149A). . . . . . . . . . . . . . . . . . . . . . . . . . . Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product speed and throughput . . . . . . . . . . . . . . . . . . . . . . . . . . . . Image quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paper handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copying capability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Expandable design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Special considerations for ADF documents . . . . . . . . . . . . . . . . . . Supported media for the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model and serial numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14 14 14 14 15 15 15 15 15 16 16 18 18 18 19 20 20 21

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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)
q

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

q q q q q

HP LaserJet 4101mfp (C9149A)
q q q q

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.

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Product features
Product speed and throughput
q q

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

q q q q q

Image quality
q

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

q q q

Paper handling
q q q q q q q q

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
q q q q q

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 REDUCE or ENLARGE button is held down) · Flatbed glass: 25 percent to 400 percent in one-percent increments (in ten-percent increments when the REDUCE or ENLARGE button is held down)

q q

automatic page-to-page enlargement or reduction image-quality improvement through background removal, best-quality mode, and contrast adjustment

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1 Product Information 15

Expandable design
q

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)

q q q q

Product specifications
Table 1. Physical specifications 4100mfp (print unit, scan unit, and ADF unit)
Height Depth Width Weight 637 mm (25.1 inches) 520.7 mm (20.5 inches) 805 mm (31.7 inches) 26 kg (56.5 pounds)

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

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

Table 2. Performance Category
Scanning speed (ADF mode) Scanning speed (flatbed mode) Copy speed Copy resolution Digital send resolution

Specification
139 mm/second (5.6 inches/second) 69 mm/second (2.8 inches/second) 25 ppm (letter) 24 ppm (A4) 600 by 600 ppi optical 600 by 600 ppi optical

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Table 3. ADF/flatbed-unit acoustical specifications Category
Sound Power Level, LWAd (1 bel = 10 decibels)

Specification
q q

Scanning: 6.7 dB (A) Standby: 5.2 dB (A)

Note Note

Testing per International Standard Organization (ISO) 9296. "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
Skew

Cut paper
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 6.0 mm (.24 inch) +/- 2mm (.08 inch) 5.0 mm (.20 inch) +/- 1.5 mm (.06 inch) 1 percent for cut sheet---simplex 1 percent for cut sheet---duplex

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

First line leading edge Left margin Text stretching

15mm (.59 inch) +/- 4.5 mm (.18 inch) 15mm (.59 inch) +/- 4.5 mm (.18 inch) None

Scan unit Tolerance
Skew Leading edge Left margin Parallel (vertical and horizontal) Image length and width

ADF
<= 1 percent +/- 2 mm (.08 inch) +/- 1 mm (.04 inch) +/- 0.6 percent +/- 1.2 percent

Glass
<= 1 percent +/- 1 mm (.04 inch) +/- 1 mm (.04 inch) +/- 0.6 percent +/- 1 percent

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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 for general requirements.

Table 5. Supported paper sizes and weights for the ADF Size
Letter A4 Legal Custom sizes

Dimensions
216 by 279 mm (8.5 by 11 inches) 210 by 297 mm (8.3 by 11.7 inches) 216 by 356 mm (8.5 by 14 inches) Minimum: 148.5 by 210 mm (5.9 by 8.3 inches Maximum: 215.9 by 355.6 mm (8.5 to 14 inches)

Weight
50 to 105 g/m2 (13 to 28 lb)

60 to135 g/m2 (16 to 36 lb)

Special considerations for ADF documents
q q q q q

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:
q q q

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

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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. Note

Model and serial number label If the control panel fails, the model and serial number label panel must be removed (see "Controlpanel door" on page 79) and installed on the replacement control panel.

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1 Product Information 19

Product overview
Front view
1 2

5 4

3

Figure 2.

Product parts (front view; right side) 1 2 3 4 5 automatic document feeder (ADF) input (with sliding media guides) ADF cover (lifts for access to the glass) control-panel door (provides access to the print cartridge; serial and model numbers are located on a panel underneath the door) control panel output bin (for printed output and copies)

6

Figure 3.

Optical-unit lock (front view; left side) 6 optical-unit lock C9148-90909

20 Product Information

Back view

1 8 7

2

6

3

5 4

Figure 4.

Product parts (back view) 1 2 3 4 5 6 7 8 ADF connector cable straight-through output door power connection (from power source to print unit) hard disk HP JetDirect card memory access door (more than one DIMM can be installed) power jumper cable (from print unit to scan unit) ADF output bin

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1 Product Information 21

22 Product Information

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2

Service approach

Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Major assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . World Wide Web. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP support assistant CD-ROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . HP authorized resellers and support . . . . . . . . . . . . . . . . . . . . . . . HP service agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24 24 25 25 25 25 25 25

2 Service approach 23

Service approach
Repair of the printer normally begins with a three-step process: 1 2 3 Isolate the problem to the major system (the host computer, the network and/or server, or MFP major assemblies). Determine whether the problem is located in one of the paper-handling devices or in the product engine. Troubleshoot the problem using the procedures in the troubleshooting chapter of this manual. See "Troubleshooting" on page 109. 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).

Major assemblies
1

2 3

Figure 5.

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

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Contact HP
World Wide Web
Printer drivers, updated HP printer software, and product and support information can be obtained from the following websites:
q q q q q q

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. To 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.

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3

Operation

Using the ADF unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General guidelines for using the ADF unit . . . . . . . . . . . . . . . . . . . Using the glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General guidelines for using the glass . . . . . . . . . . . . . . . . . . . . . . Using the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Layout and operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Walk-up copy display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configure device, diagnostic, and service menus . . . . . . . . . . Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28 28 29 29 30 30 31 31 31 32 32 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:
q q q

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/m2 (16 to 28lb) 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

q q q q

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

Figure 6. Note

Using the ADF 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 3 Place documents in the ADF input tray. On the control panel, select the sending or copying options you want to use. See the "Walkup copying" and "Sending to e-mail" sections in the use guide for information about these functions. After making your selections, press START. Copies are sent to the output bin beneath the scan unit. When the scan is complete, remove the original document from the ADF output. C9148-90909

4 5 28 Operation

Using the glass
You can also use the digital-sending and copying features by using the glass, located below the ADF. The glass can accommodate letter- or A4-size and smaller originals, books, manuals, receipts, and similar documents. Irregular and worn documents, stapled documents, and photographs can also be easily sent or copied using the flatbed.

General guidelines for using the glass

Figure 7.

Using the glass 1 2 Open the ADF cover and place the original document face-down on the glass. Lower the cover. On the control panel, select the sending or copying options you want to use. See the "Walkup copying" and "Sending to e-mail" sections in the use guide for information about these functions. After making the selections, press START. Copies are sent to the output bin beneath the flatbed. When the scan is complete, remove the original document from the glass.

3 4

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3 Operation 29

Using the control panel
Layout and operation
1 2 3 4
5

6

7

8

9 10

11 13 Figure 8. Control panel 1 2 3 ? (Help): provides Help files that contain information about the control-panel display when problems occur. Control-panel display. Navigation buttons: four arrow buttons that are used to move among elements on the control-panel display. Use the central SELECT ( ) button to choose an element or enter a menu. C (Clear): resets the copy count or other numeric entries.
MENU:

12

4 5 6 7 8 9 10 11

use to choose device configuration menus on the control panel.

Status lights: Ready light, Data light, and Attention light. Light and dark buttons: use to increase or decrease the brightness of the copy image
REDUCE RESET: STOP:

and ENLARGE buttons: use to scale the copy size.

returns all current job settings to their default values.

cancels a copy job, digital send job, or print job. begins or resumes a job.

START:

12 Numeric keypad and keyboard: the keypad is used to type numerical values. The keyboard is used for digital-sending features and for typing other data. Hint If the MFP is put into a paused mode (see "Menu map" on page 33), the control panel displays the message Paused at the top of the display. To return the MFP to the ready mode, press MENU and then use the navigation buttons (callout 3) to highlight RESUME on the control-panel display. Press the SELECT ( ) button. The message displayed on the control panel changes from Paused to Ready. The MFP paused mode is not the same as PowerSave mode. When the MFP is in PowerSave mode, the control-panel displays the message POWERSave On at the top of the display. When in PowerSave mode, pressing any key or button on the control panel will return the MFP to the ready state.

30 Operation

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Navigation
By pressing the arrow navigation buttons, you can shift focus between objects on the controlpanel display to describe the document to be handled and the actions to be performed. A bold border around a graphic object or a reverse video effect in a text list indicates the current focus. Use the central SELECT ( ) button to select menus. Select

Move up Move right Move down

Move left

Figure 9.

Navigation buttons

Walk-up copy display
Use the walk-up copy display menu on the control-panel display to describe the original document and to specify the actions to be taken and their parameters. The primary walk-up copy display menu choices are:
q q q

Describe Original Copy Settings Send Options

After power is turned on the MFP initializes and the top-level menu display appears when the MFP is ready to process jobs.

Figure 10.

Top-level control-panel menu display The Describe Original menu is used for both digital-sending and copying. The other menus are addressed in the "Walk-up copying" and "Sending to e-mail" sections in the use guide.

Status bar
The status bar is the uppermost line of available text on the control-panel display.
q

The status line shows both product-status messages and user prompts. When the product is idle, this line displays Ready To Copy, Accepting Copy Jobs, or Ready. During scanning, the line might read Scanning Page x. During copying, you might see Data Recieved Processing Job. Error messages are not communicated on the status line, but they appear in a text box overlay that blocks normal display views until the message is cleared. The copy count shows the number of copies selected. This selection is made using the keypad. Acceptable values are from 1 to 99.

q

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3 Operation 31

Menus
The HP LaserJet 4100mfp series uses a system of control-panel menus to set job parameters, set system defaults, and manage product performance and features. Menu options are reached by pressing the MENU button on the right side of the control-panel display and scrolling through the list to locate the option you want to use. The following menus are available.
q q q q q q q

Pause/Resume (see Hint on page 30) Retrieve job Information Paper handling Configure device Diagnostic Service (PIN code: 04410002)

For more information about menus, see "Control panel and control panel menus" in the use guide.

Configure device, diagnostic, and service menus
The configure device menu is used to establish the product's default settings. The selected defaults can be locked by the system administrator. You can override the default settings at the control panel for the current job only. It might be necessary to reset these options to factory defaults when troubleshooting the MFP unit. The diagnostic menu is used to calibrate and test MFP components. The diagnostic menu can also be used to print or view an event log. An event log records the number and type of errors the product has experienced. The service menu is used by HP-authorized service representatives only and is protected by an eight-digit personal identification number (PIN). See "Service menu" on page 127. The service menu can be used to verify the serial number of the MFP unit.

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Menu map
The menu map is a graphical representation of the MFP menus. Press the MENU button on the control panel to gain access to the main menu display. For more information about navigating the menus, see "Navigation" on page 31. Note Default settings shown in bold.

Figure 11.

MFP menu map 1 of 2

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3 Operation 33

Menu map, continued

Figure 12. 34 Operation

MFP menu map 2 of 2 C9148-90909

4

Maintenance

Cleaning the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Running the cleaning page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning the ADF delivery guide (clear mylar strip) . . . . . . . . . . . . User-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing user-replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . Updating product firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Downloading a remote firmware update . . . . . . . . . . . . . . . . . . . . . Installing the update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RFU installation messages . . . . . . . . . . . . . . . . . . . . . . . . . . . Using HP Web JetAdmin (single update) . . . . . . . . . . . . . . . . . Using HP Web JetAdmin (multiple or unattended update). . . . Windows parallel connection (local printer) . . . . . . . . . . . . . . . Windows parallel connection (network printer) . . . . . . . . . . . . Troubleshooting RFU installation . . . . . . . . . . . . . . . . . . . . . . . . . . RFU installation error messages . . . . . . . . . . . . . . . . . . . . . . . Performing hard-drive disk initialization . . . . . . . . . . . . . . . . . . . . . NVRAM initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performing automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . Performing manual calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead adjustment for the ADF . . . . . . . . . . . . . . . . . . . . . . . . . . Center adjustment for the ADF . . . . . . . . . . . . . . . . . . . . . . . . Leading-edge adjustment for the glass . . . . . . . . . . . . . . . . . . Side-edge adjustment for the glass . . . . . . . . . . . . . . . . . . . . .

36 36 37 37 39 39 41 41 41 41 42 42 43 43 44 44 45 46 47 47 48 48 49 49 50

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4 Maintenance 35

Cleaning the product
General guidelines
Perform the following cleaning procedures when you change the print cartridge or when printquality problems occur. To minimize problems, keep the product free from dust and debris. WARNING! Turn the main power-switch off and unplug the MFP power cord before you disconnect any cables or accessories, and before you perform preventative maintenance or cleaning. Failure to follow this warning can result in serious product damage or personal injury. While cleaning the product, do not to touch the transfer roller (the black rubber roller located underneath the print cartridge). Skin oils on the roller can affect print quality. Table 6. General cleaning guidelines Part
Covers Control panel ADF rollers

CAUTION

Cleaning interval
Clean when visibly dirty. Clean when dusty or when fingerprints build up. Clean if the user is experiencing misfeeds, or multipage feeds, or if documents are skewing when traveling through the ADF. Clean when visibly dirty or if the user is experiencing poor copy quality such as blurriness or streaking.

Cloth
Soft, tight weave; lint-free. Soft, tight weave; lint-free. Soft, tight weave; lint-free.

Solvent
Water (add a mild detergent if desired). See caution below. Water. See caution below. Water. See caution below.

Glass

Soft, tight weave; lint-free.

Ammonia-based cleaner or water. See caution below.

Whiteboard cover (white vinyl Clean when visibly dirty. backing located on the bottom of the ADF cover) Clear mylar sheet (ADF delivery guide) Clean when visibly dirty or if the user is experiencing poor copy quality such as blurriness or streaking.

Soft, tight weave; lint-free.

Ammonia-based cleaner or water. See caution below. Water. See caution below.

Soft, tight weave; lint-free.

CAUTION

To prevent damage, do not pour or spray cleaning solvents directly onto MFP components. Spray water or cleaning solvent onto a cloth and wipe down components that need cleaning. Because some MFP components should never be exposed to ammonia fumes, use ammonia-based cleaners sparingly and only where indicated.

36 Maintenance

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Running the cleaning page
Run the cleaning page to keep the fuser free of toner and paper particles. Accumulation of toner and particles can cause specks to appear on the front-side or back-side of your jobs. It is recommended that you either use the cleaning page every time you replace the print cartridge or that you establish an automatic cleaning schedule. You can run a cleaning page in two ways:
q q

automatically at an interval that you establish manually as needed from the control panel

For information about these procedures, see the HP LaserJet 4100 series printer service manual. 1 2 3 Access the Configure Device menu. See "Menus" on page 32. Select Print Quality. Select Create Cleaning Page and follow the instruction on the page.

Cleaning the ADF delivery guide (clear mylar strip)
1 2 Raise the ADF unit. Open the delivery-guide cover by pressing in the small plastic handles on either side of the delivery guide.

Figure 13.

Open the delivery-guide cover 3 Remove the clear, plastic sheet (callout 1).

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4 Maintenance 37

1

Figure 14.

Remove the clear plastic