HP laserjet 2100 schematic

Service Manual

HP LaserJet 2100

Publication number C4170-90959

First edition, February 1999

Trademark Credits

Adobe and PostScript are trademarks of Adobe Systems Incorporated which may be registered in certain jurisdictions.

Windows is a U.S. registered trademark of Microsoft Corporation.

Warranty

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

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

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

WARNING

Electrical Shock Hazard

To avoid electrical shock, use only supplied power cords and connect only to properly grounded wall outlets.

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

Conventions

This manual uses the following conventions: The names of major printer parts and assemblies are Capitalized.

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

NOTE:

CAUTION:

WARNING!

Bold

is used for emphasis, particularly in situations where

Italic type

Notes contain important information set off from the text.

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

Warning messages alert you to the possibility of personal injury.

is used to indicate related documents or emphasis.

italic

type would be confusing.

C4170-90959

Chapter Descriptions

Chapter 1: Product Information

This chapter describes features of the printer, including locations of external and internal assemblies, and gives safety and regulatory information. Use this chapter to form a basic service approach, and to get technical assistance.

Chapter 2: Operating Requirements

Chapter 2 details site requirements, including space and environmental specifics. The chapter also defines specifications for paper and other media with this printer.

Chapter 3: Printer Configuration

Learn to use the control panel, perform an engine test, and reset the printer. Chapter 3 contains options for configuring the printer through service mode, and also details about installing and using the Remote Control Panel. Network and IR printing is also explained.

Chapter 4: Printer Maintenance

This chapter discusses service check points, procedures for cleaning the printer, and how to use toner cartridges effectively.

Chapter 5: Functional Overview

The functional overview discusses each of the printer’s stages to form and develop an image. This chapter details the engine control system, the formatter system, the paper feed system, and the sequence of printer operation.

Chapter 6: Troubleshooting

Use the systematic troubleshooting process to solve printing problems. This process contains a preliminary troubleshooting flowchart, with explanations of each step throughout the chapter. Explanations include a table with descriptions and recommended actions for all control panel messages, image defect samples, troubleshooting problems with media, and diagrams showing the locations of components that may be causing problems.

Chapter 7: Removal and Replacement

Step-by-step procedures show how to replace field replaceable units (FRUs) in the printer.

Chapter 8: Parts and Diagrams

Exploded view drawings and part number listings are included for all replaceable parts in the printer. The composite table of replaceable parts is sorted alphabetically by part name, and also sorted numerically by part number. Both tables are cross-referenced to the diagrams in the chapter.

C4170-90959

Index

The index is an alphabetical, cross-referenced listing of information found in the main body of the manual.

C4170-90959

Contents

1 Product Information

Printer Description and Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

External Assembly Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Internal Assembly Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Laser Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Laser Statement for Finland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

LED Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Toner Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Ozone Emission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Environmental Product Stewardship Program . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Protecting the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

FCC Regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Service Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Bench Repair Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

HP Express Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Ordering Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Ordering Consumables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Ordering Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Technical Assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

HP ASAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

HP FIRST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

HP Audio-Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

HP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Customer Support Worldwide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Worldwide Sales and Service Offices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2 Operating Requirements

Site Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Operating Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Printer Space Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Media Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

General Media Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Guidelines for Selecting Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Media Input Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Tray 1 Media Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Tray 2 and Optional Tray 3 Paper Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Envelope Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Label Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Transparency Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Storing Print Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Shipping Print Media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Paper Fillers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Testing Media Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3 Printer Configuration

Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Display LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Job Cancel Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Go Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Printing Demo Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Printing Self-Test/Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Continuous Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Engine Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Accessing Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Setting the Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Setting the Cold Reset Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Resetting the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Cold Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

NVRAM Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Remote Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Installing the Remote Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Network Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Installing an HP JetDirect EIO Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

IR Printing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4 Printer Maintenance

Service Check Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Cleaning the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

General Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Internal Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Toner Cartridge Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Handling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Refilled Toner Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Recycling Toner Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Toner Cartridge Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Toner Cartridge Life Expectancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Saving Toner with EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Redistributing the Toner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

5 Functional Overview

Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Power On Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Timing Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Printer Functionality and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Formatter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Formatter Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Formatter Subsystems/Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Resolution Enhancement technology (REt - 600 dpi only). . . . . . . . . . . . . . 75

Print Density Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

EconoMode (600 dpi only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Memory Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Printer Job Language (PJL) Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

C4170-90959

Engine Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Laser Scanner Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Paper Feed Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Microswitch Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Fusing Assembly Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Power Supply and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Image Formation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Toner Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Cleaning Stage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Conditioning Stage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Writing Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Developing Stage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Transferring Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Fusing Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Paper Pick and Feed System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Paper Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Paper Size Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Paper Jam Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

6 Troubleshooting

Troubleshooting Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Preliminary Operating Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Basic Fault Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Troubleshooting Process Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Troubleshooting with Control Panel Messages. . . . . . . . . . . . . . . . . . . . . . . . . . 96

Control Panel LED Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Paper Handling Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Print Test Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Engine Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Self-Test / Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Paper Jam Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Media and Paper Handling Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Evaluate the Test Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Status Log Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Verify Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Image Formation Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Half Self-Test Functional Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Drum Rotation Functional Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Media Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Determine the Problem Source: Paper or Printer. . . . . . . . . . . . . . . . . . . . 134

Isolate a Paper Path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Isolate a Paper Brand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Isolate a Paper Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Evaluate Practices of Paper Users. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Evaluate Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Communication Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Communications Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Test Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

EIO Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

JetDirect Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Reference Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Sensors and Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

C4170-90959

7 Removal and Replacement

Removal and Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Parts Removal Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

Toner Cartridge Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Tray 2 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Transfer Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Tray 2 Pickup Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Tray 2 Pickup Roller Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

I/O Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

EIO Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

DIMM Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

DIMM Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Formatter PCB Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

EIO Shield and Guide Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Rear Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

Fusing Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Fusing Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Fusing Film Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Pressure Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Engine Controller Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Top Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Upper Output Delivery Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Lower Output Delivery Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Laser Scanner Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

Transport Belts and Rollers Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

Transport Belts and Rollers Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 202

Ribbon Cable Harness Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Printer Drive Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Main Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Motor Plate Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Printer Drive Assembly Gear Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Tray 1 Pickup Roller Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Tray 1 Separation Pad Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 215

Tray 1 Paper Sensor Lever Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Tray 1 Paper Sensor Lever Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 219

Tray 1 Solenoid Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Tray 2 Pickup Roller Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Tray 2 Solenoid Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Intermediate PCB Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Registration Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

Fusing Assembly Ground Clip Replacement . . . . . . . . . . . . . . . . . . . . . . . 230

Tray 3 Assembly Connector Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

Left Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

Cooling Fan Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

Toner Cartridge Guide Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

Tray 1 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Tray 1 Pickup Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Tray 1 Separation Pad Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

DC Bias Voltage Contacts (Leaf Springs) Removal. . . . . . . . . . . . . . . . . . 245

DC Bias Voltage Contacts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Tray 3 Cassette Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Tray 3 Pickup Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Tray 3 Paper Feeder Drive Assembly Removal. . . . . . . . . . . . . . . . . . . . . 252

Tray 3 Solenoid Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254

C4170-90959

8 Parts and Diagrams

External Covers and Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256

Top Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Internal Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

Printer Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

PCB Assembly Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

Paper Feeder Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Paper Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

Paper Tray Pickup Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276

Paper Tray External Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Paper Tray Internal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

Hardware Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

Alphabetical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Numerical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

C4170-90959

Product Information

Contents

Printer Description and Features - - - - - - - - - - - - - - 2 Identification - - - - - - - - - - - - - - - - - - - - - - - - 4 Specifications - - - - - - - - - - - - - - - - - - - - - - - 5 Product Overview - - - - - - - - - - - - - - - - - - - - - 6 Safety Information - - - - - - - - - - - - - - - - - - - - - 9 FCC Regulations - - - - - - - - - - - - - - - - - - - - - 15 Service Approach - - - - - - - - - - - - - - - - - - - - 16 Technical Assist ance - - - - - - - - - - - - - - - - - - - 18

C4170-90959

Contents

Printer Description and Features

Table 1-1. Printer Description and Features

Print Speed

Print Quality

Paper Handling

Accessories

10 pages-per-minute (In tel 80960J D 66 MHz RISC-b ased f ormatter

●

and 33 MHz BUS). True 1200 by 1200 dots per inch (dpi) text and graphics.

●

Resolution Enhancement technology (REt) (600 dpi only).

●

Adjustable settings to optimize print quality and performance:

●

Best Quality: 1200 by 1200 dpi Faster Performance: 600 by 600 dpi Custom: User Defined Settings

HP UltraPrecise toner cartridge. Cartridge capacity equals

●

approximately 5000 pages at 5% toner cover. Adjustable Tray 1 for letterhead, envelopes, labels, transparencies,

●

custom-sized media, postcards, and heavy paper. Tray capacity equals approximately 100 sheets of standard paper or 10 standard envelopes.

Adjustable 250-sheet Tray 2 for standard sizes of paper.

●

Top output bin (for printing face down).

●

Rear output bin (for printing face up).

●

Straight-through p aper p ath capa bility from Tray 1 to the rear o utput

●

bin. Optional Tray 3 with a 250-sheet capacity.

●

PCL Printer Language and Fonts

PostScript Language Emulation and Fonts

Automatic Language and I/O Switching

Wireless Infrared Printing

Enhanced Input Output (EIO) cards.

●

Three dual in-line memory module (DIMM) slots.

●

PostScript™ Level 2 emulation DIMM. Factory installed on the

●

2100 M and 2100 TN. PCL6 with built-in Intellifont and TrueType scaling, HP-GL/2 vector

●

graphics, and advanced imaging capabilities. Also included are 45 scalable TrueType fonts and one bitmapped Line Printer font.

The HP LaserJet 2100 M and 2100 TN printers include the

●

PostScript Level 2 printer language emulation with 35 built-in PostSc ript langua ge fonts.

When optional printer l anguages (suc h as P ostScript em ulation) are

●

installed, the printer automatically determines and switches to the appropriate language for the print job.

With I/O switching, the printer switches back and forth between

●

active I/Os. Fast infrared (IR) printing when printing from an IrDA-compliant

●

device, such as a laptop, notebook computer, or a personal digital assistant (PDA).

JetSend IR enabled devices can also use the IR port.

●

2 Chapter 1 Product Information C4170-90959

Table 1-1. Printer Description and Features (continued)

Interface Connect ion s

Networking Memory and Memory

Expansion

Energy Savings

Economical Printing

IEEE-1284 compliant Type B parallel port

●

Data Transfer Rate: approximately 4 MB/second LocalTalk port

●

Enhanced Input/Output (EIO) Slot

●

Wireless Infrared port (IrDA compliant)

●

Date Transfer Rate: approximately 4 MB/second The printer provides an EIO slot for HP JetDirect print servers.

●

The HP LaserJet 2100 printer co mes with 4 MB of memory and can

●

be expanded to 52 MB using the three available memory (DIMM) slots.

The HP LaserJet 2100 M and 2100 TN printers come with 8 MB of

●

memory and can be expanded to 40 MB with the two available memory (DIMM) slots. The third slot is used for the PostScript language emulation DIMM.

The printer automatically conserves electricity by reducing power

●

consumption when not printing.

●

As an E

NERGY STAR

determined that this product meets E

partner, Hewlett-Packard Company has

NERGY STAR

guidelines for

energy effici enc y. EconoMode (600 dpi only), manual dup lexing, and N-up printing let

●

the user save paper, toner, and time.

Duty Cycle

Approximately 15,000 pages per month.

●

Table 1-2. Comparison of HP LaserJet 2100, 2100 M, and 2100 TN

HP LaserJet 2100

PS DIMM Optional Standard Standard Standard Memory

Maximum Memory JetDirect 600 N print

server

4 MB 52 MB

Optional Optional Standard

HP LaserJet 2100 M HP LaserJet

2100 TN

8 MB 40 MB

C4170-90959

Printer Description and Features

Identification

The serial number and the model number are listed on the identification label located on the rear output bin.

The serial number contains information about the country of origin, the revision level, the production code, and the production number of the printer.

As shown in figure 1-1, the label also contains power rating and regulatory information.

NOTE: These values vary by region.

Figure 1-1 Sample Identification Label

4 Chapter 1 Product Information C4170-90959

Specifications

Table 1-3. Physical Specifications

Height 230mm (9 in.) 309mm (12.2in.) Width 406 mm (15.9 in.) 406 mm (15.9 in.) Depth (body) 420 mm (16.5 in.) 420 mm (16.5 in.) Weight (with toner cartridge) 11.5 kg (25.4 lb.) 14.4 kg (31.7 lb.)

Table 1-4. Electrical Specifications

HP LaserJet 2100 HP LaserJet 2100 with

Optional Tray 3

100-127V (+/- 10%) 50/60Hz (+/- 2Hz)

Typical Power Consumption Printing 225 W (average)

Standby 12 W (instant power save)

Power save mode 12 W Off mode 0 W

Minimum recommended circuit capacity

5 Amps 2.5 Amps

220-240V (+/- 10%) 50/60 Hz (+/- 2Hz)

Printing 225 W (average) Standby 14 W (instant power

save) Power save mode 14 W Off mode 0 W

WARNING! Power requirements are based on the region where the printer is sold. Do not convert operating

voltages. This may damage the printer and void the product warranty.

Table 1-5. Environmental Specifications

Operating Printing Storage/Standby

Temperature

15 degrees to 32.5 degrees C

-20 degrees to 40 degrees C

C4170-90959

(printer and toner cartridge) Relative humidity 10% to 80% 10% to 90%

(59 degrees to 89 degrees F)

(-4 degrees to 104 degrees F)

Table 1-6. Acoustic Emissions (Per ISO 9296)

Operator Position Bystander (1m) Sound Power

Printing (HP LaserJet 2100 at 10 ppm)

Power Save In this mode, the printer is essentially quiet.

55dB(A) L

pAm

48dB(A) L

pAm

WAd

6.2 bels(A)

Specifications

Product Overview

External Assembly Locations

Figure 1-2 External Assembly Locations (1 of 4)

Tray 1

Top cover

Top output bin (face-down)

Expansion trays

Tray 2

DIMM cover

Figure 1-3 External Assembly Locations (2 of 4)

Rear output bin

Engine test

Power receptacle

Figure 1-4 External Assembly Locations (3 of 4)

Toner cartridge

I/O cover

Control panel

Powe r swi tch

6 Chapter 1 Product Information C4170-90959

Figure 1-5 External Assembly Locations (4 of 4)

Tray 3

Tray 3 assembly

C4170-90959

Product Overview

Internal Assembly Locations

Figure 1-6 Internal Assembly Locations (1 of 2)

Laser scanner assembly

Delivery rollers

Fusing film

Figure 1-7 Internal Assembly Locations (2 of 2)

Primary charging roller

Developing cylinder

Toner cartridge

Registration shutter

Tray 1 pickup roller

Tray 1

Registration rollers

Paper feeder (option)

Pressure roller

Fee d belt

Photosensitive drum

Transfer charging roller

Tray 2

Tray 3

Tray separation pads

Tray pickup rollers

8 Chapter 1 Product Information C4170-90959

Safety Information

Laser Safety

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration has implemented regulations for laser products manufactured since August 1,

1976. Compliance is mandatory for products marketed in the United States. The printer is certified as a Class 1 laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968.

Since radiation emitted inside the printer is completely confined within protective housings and external covers, the laser beam cannot escape during any phase of normal user operation.

WARNING! Using controls, making adjustments, or performing procedures other than those specified in

this service manual may result in exposure to hazardous laser radiation.

Laser Statement for Finland

LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APP ARAT

HP LaserJet 2100 -laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle.

Laitteen turvallisuusluokka on määritetty standardin EN 60825-1 (1993) mukaisesti.

VAROITUS!

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

VARNING!

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

C4170-90959

Safety Information

HUOLTO

HP LaserJet 2100 -kirjoittimen sisällä ei ole käyttäjän huollettavissa olevia kohteita. Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkilö. Tällaiseksi huoltotoimenpiteeksi ei katsota väriainekasetin vaihtamista, paperiradan puhdistusta tai muita käyttäjän käsikirjassa lueteltuja, käyttäjän tehtäväksi tarkoitettuja ylläpitotoimia, jotka voidaan suorittaa ilman er ikoist yökaluja.

VARO!

Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymättömälle lasersäteilylle laitteen ollessa toiminnassa. Älä katso säteeseen.

VARNING!

Om laserprinterns skyddshölje öppnas då apparaten är i funktion, utsättas användaren för osynlig laserstrålning. Betrakta ej strålen.

Tiedot laitteessa käytettävän laserdiodin säteilyominaisuuksista:

Aallonpituus 770-7 95 nm Teho 5 mW Luokan 3B laser

LED Safety

The infrared port on the control panel of this printer is classified as a Class 1 LED (light emitting diode) device according to International Standard IEC 825-1 (EN 60825-1). This device is not considered harmful, but the following precautions are recommended.

• Avoid direct eye exposure to the infrared LED beam.

• Be aware that the beam is invisible light and cannot be seen.

• Do not attempt to view the infrared LED beam with any type of optical device.

10 Chapter 1 Product Information C4170-90959

Declaration of Conformity

C4170-90959

Safety Information

Toner Safety

Composed of plastic and minute colored components, toner is a non-poisonous substance. If toner adheres to skin or clothes, remove as much of it as possible with dry tissue paper, and then wash with cold water. Hot water causes toner to gel and become difficult to remove.

NOTE: Avoid letting toner come into contact with vinyl because it easily breaks down the vinyl material.

Material Safety Data Sheet

The Toner Cartridge/Drum Material Safety Data Sheet (MSDS) can be obtained by contacting the HP LaserJet Supplies web site at:

http://www.hp.com/go/msds

If access to the Internet is not available, call the U.S. HP FIRST (Fax Information Retrieval Service Technology) at (1) (800) 231-9300. Use Index number 7 for a listing of the Toner Cartridge/Drum Material/Chemical Safety Data Sheets. Non-US customers should refer to “Technical Assistance” (page 18) for phone numbers and information.

Ozone Emission

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

12 Chapter 1 Product Information C4170-90959

Environmental Product Stewardship Program

Protecting the Environment

Hewlett-Packard Company is committed to providing quality products in an environmentally sound manner. This HP LaserJet printer has been designed with several attributes to minimize impacts on our environment.

This HP LaserJet printer design reduces:

Energy Consumption

Energy usage drops to as little as 12 W (110V) and 14 W (220V) while in low-power (PowerSave) mode. Not only does this save natural resources, but it also saves money without affecting the high performance of this printer. This product qualifies for E

NERGYSTAR

development of energy-efficient office products.

. E

NERGYSTAR

is a voluntary program established to encourage the

NERGY STAR

partner, Hewlett-Packard Company has determined that this product meets E Guidelines for energy efficiency.

is a U.S. registered service mark of the U.S. EPA. As an E

NERGYSTAR

Toner Consum pti on

EconoMode uses significantly less toner, which might extend the working life of the toner cartridge.

Paper Use

Depending on the type of software program in use, users can request for a number of pages of their documents to be printed on one sheet of paper. This N-up printing practice and the printer’s automatic/manual duplexing feature, which provides two-sided printing, can reduce paper usage and the resulting demands on natural resources.

The design of this HP LaserJet printer facilitates the recycling of:

Plastics

Plastic housing parts have markings according to international standards that enhance the ability to identify plastics for recycling purposes at the end of the printer’s life.

C4170-90959

Environmental Product Stewardship Program

HP LaserJet Printing Supplies

In many countries, this product’s printing supplies (e.g., toner cartridge, drum, fuser) can be returned to HP through the HP Planet Partners Printing Supplies Environmental Program. An easy-to-use takeback component of the program is available in over 20 countries. Multilingual program information and instruction are included in every new HP LaserJet Toner Cartridge and Consumables box.

HP Planet Partners

Since 1990, the HP LaserJet Toner Cartridge Recycling Program has collected more than 12 million used LaserJet toner cartridges that otherwise might have been discarded in the world’s landfills. The HP LaserJet toner cartridges go to a collection center and are bulkshipped to our recycling partners who disassemble the cartridge parts for recycling. After a through quality inspection, minor parts, such as nuts, screws, and clips are reclaimed for use in new cartridges. Remaining materials are separated and converted into raw materials for use by other industries to make a variety of useful products.

Paper

This printer is suited for the use of recycled papers when the paper meets the guidelines outlined in the suitable for the use of recycled paper according to DIN 19 309.

The design of this HP LaserJet printer facilitates the recycling of:

HP LaserJet Printer F amily Paper Specifications Guide

. Also, this printer is

Printer and Parts

HP provides a product return system for customers in Germany. Many of the functional parts are recovered, tested, and reused as fully warranted service parts. Used parts are not placed into new product manufacturing. Remaining product parts are recycled, if possible. For product return information, contact the local HP Sales and Service office.

To ensure longevity of the HP LaserJet printer, HP provides the following:

Extended warranty

HP SupportPack provides coverage for the HP hardware product and all HP-supplied internal components. The hardware maintenance covers a three-year period from date of the HP product purchase. The customer must purchase HP SupportPack within 90 days of the HP product purchase. Information on HP SupportPack is available in fax format by calling HP FIRST (fax-on-demand service). The document number is 9036. Customers should refer to the front of this manual for appropriate HP FIRST phone numbers and information.

Spare Parts and Consumables Availability

Spare parts and consumable supplies for this product will be made available for at least 5 years after production has been discontinued.

14 Chapter 1 Product Information C4170-90959

FCC Regulations

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy. If this equipment is not installed and used in accordance with the instructions, it may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. The presence of interference can be determined by turning the equipment off and on. If this equipment does cause harmful interference to radio or television communications, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the distance between the equipment and the receiver.

• Connect the equipment to an outlet on a circuit different from that to which the receiver

is located.

• Consult the dealer or an experienced radio/television technician.

NOTE: Any changes or modifications to the printer that are not expressly approved by HP could void

the user’s authority to operate this equipment. Use of a shielded interface cable is required to comply with the Class B limits of Part 15 of

FCC rules.

C4170-90959

FCC Regulations

Service Approach

Bench Repair Warranty

The warranty for this product is “return to bench” for a period of one year from the date of purchase. This means that customers needing warranty repair must return their printer to an HP repair center or an Authorized Service Provider (ASP).

HP Express Exchange

Through Customer Care Centers In the United States and Canada, customers have an option to initiate Express Exchange. Under this option, customers may have a factory refurbished printer sent to them within 24 hours.

1 The customer contacts the local HP Customer Care Center listed in the product

documentation. A technician troubleshoots the situation and determines whether the

printer has actually failed. If so, the technician refers the customer to the HP Service

Center. 2 A representative from the service center requests product and customer information. In

some regions, collateral may also be requested. 3 HP ships a refurbished replacement unit to arrive the next day. (Geographic distance

might prevent next-day shipping.) 4 The customer sends the defective printer to Hewlett-Packard at HP's expense. Customers with on-site support service provided by HP should work directly with the local

Customer Care Center instead of following the steps outlined here. Exchanged units carry the remainder of the original unit’s warranty or 90 days, whichever is

greater. The faster turnaround from HP Express Exchange minimizes downtime over traditional service programs that require the user to ship the failed unit to the manufacturer and then wait for it to be repaired and returned. Because HP pays the shipping charges, the user incurs no hidden costs for the service.

Ordering Parts

Field replaceable part numbers are listed in Chapter 8: Parts and Diagrams. Replacement parts can be ordered from HP’s Parts Direct Ordering or HP’s Parts Center Europe. Addresses and telephone numbers for both organizations are as follows:

Parts Direct Ordering Parts Center Europe

Hewlett-Packard Company Support Materials Organization 8050 Foothills Blvd. Roseville, CA 95678

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

Hewlett-Packard Company Parts Center Europe Wolf-Hirth Strasse 33 D-7030 Boeblingen, Germany

(49 7031) 14-2253

16 Chapter 1 Product Information C4170-90959

Ordering Consumables

Consumables and accessories can be ordered directly from Hewlett-Packard. Telephone numbers for ordering consumables are as follows:

U.S. 1-800-538-8787 Canada 1-800-387-3154 Toronto 416-671-8383 United Kingdom 0734-441212 Germany 0130-3322

Ordering Related Documentation

The following table shows where to order related documentation. Telephone numbers for the various sources are as follows:

PDO (Parts Direct Ordering) 1-800-227-8164 (U.S. only) PCE (Parts Center Europe) 49 7031 14-2253 HPD (HP’s Distribution Center) 303-353-7650 (U.S. only)