HP LaserJet 8000, LaserJet 8000 N, LaserJet 8000 DN, Mopier 240s Service Manual

HP LaserJet 8000, 8000 N, 8000 DN

English

and HP LaserJet Mopier 240 Printers Service Manual

Service Manual

HP LaserJet 8000 (C4085A) HP LaserJet 8000 N (C4086A) HP LaserJet 8000 DN (C4087A) HP LaserJet Mopier 240 (C4228A)

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

Publication number C4085-91087

First edition, November 1998

Warranty

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

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

Hewlett-Packard shall not be liable for errors co ntained 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 (3-hole) wall outlets.

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.

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.

italic

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

type

Italic type

Note Notes contain important information set off from the text.

CAUTION Caution messages alert you to the possibility of damage to equipment

or loss of data.

WARNING! Warning messages alert you to the possibility of personal injury.

The illustration below shows the orientation of the paper-handling accessories as they are referred to in this publication.

is used to indicate related documents or emphasis.

C4085-91087 iii

Chapter Descriptions

1 Product Information

Contains printer features and product overview, tray capacities and sizes, media specifications, service approach, how to get technical assistance, and required safety and compliance statements.

2 Site Requirements

Contains space and environmental requirements.

3 Operating Overview

Contains details about control panel menus, restoring factory defaults, and resetting and testing the printer.

4 Maintenance and Adjustments

Contains cleaning and preventive maintenance information, and adjustment procedures for paper trays.

5 Functional Overview

Contains block diagrams and basic theory of operation for the printer systems, paper paths, and paper handling accessories. Contains basic cabling information.

6 Removal and Replacement

Contains step-by-step procedures for replacing field replaceab le units (FRUs) in the printer and paper-handling accessories.

7 Troubleshooting

Contains a preliminary troubleshooting table, a table with descriptions and recommended actions for all control panel messages, image defect samples, and troubleshooting checks and tools.

iv C4085-91087

8 Parts and Diagrams

Contains exploded view drawings and part number listings for all replaceable parts in the printer and paper-handling accessories.

Contains two replaceable parts tables: one sorted alphabetically by part name, and one sorted numerically by part number. Both tables are cross referenced to the diagrams in the chapter.

Subject Index

Contains an alphabetical, cross referenced listing of information f ound in the main body of the manual.

C4085-91087 v

vi C4085-91087

1 Product Information

Printer Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Model and Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Media Selection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Envelopes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Adhesive Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Transparencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Storing Print Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Shipping Print Media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

External View of HP LaserJet 8000/N/DN Engine . . . . . . . . .14

External View of HP Mopier 240. . . . . . . . . . . . . . . . . . . . . . .16

Formatter Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Accessories and Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Hard Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Determining Memory Requirements. . . . . . . . . . . . . . . . . . . .26

Service Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Ordering Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Exchange Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Toner Cartridge Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Refilled Toner Cartridges & Non-HP Staple Cartridges . . . . .30

Recycling Toner Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . .30

Technical Assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

HP FIRST (Fax Information Retrieval Support

Technology) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

World Wide Web. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

HP Reseller Sales and Service Support Line . . . . . . . . . . . . .32

Other Areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

FCC Regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Environmental Product Stewardship. . . . . . . . . . . . . . . . . . . . . . .36

Protecting the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . .36

C4085-91087 vii

Material Safety Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Environmental Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Safety Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Laser Safety Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Canadian DOC Regulations . . . . . . . . . . . . . . . . . . . . . . . . . .42

VCCI Statement (Japan). . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Korean EMI statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Laser Statement for Finland . . . . . . . . . . . . . . . . . . . . . . . . . .43

2 Site Requirements

Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Space Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

3 Operating Overview

Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Control Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Settings and Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Printer Driver Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Paper Source Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Resetting the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Setting the Display Language. . . . . . . . . . . . . . . . . . . . . . . . .55

Control Panel Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Paper Handling Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Print Quality Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Printing Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

I/O Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

EIO Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Resets Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Setting Page Count, Maintenance Count,

and Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Setting the Cold Reset Default Paper Size. . . . . . . . . . . . . . .79

Testing the Printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Paper Path Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Configuration Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

viii C4085-91087

4 Maintenance and Adjustments

Cleaning the Printer and Accessories. . . . . . . . . . . . . . . . . . . . . .82

Cleaning Spilled Toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Preventative Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Tray Adjustment Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Tray 4 (2000-sheet Input Tray) Adjustment Procedure. . . . . . . . .88

5 Functional Overview

Printer Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . .92

Power Distribution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

AC Power Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Overcurrent/Overvoltage Protection . . . . . . . . . . . . . . . . . . . .94

High Voltage Power Distribution. . . . . . . . . . . . . . . . . . . . . . .95

Formatter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

DC Controller System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Laser and Scanner Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Paper Motion Monitoring and Control. . . . . . . . . . . . . . . . . . .99

Clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Engine Test Microswitch. . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Image Formation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Toner Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Drum Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Drum Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Image Writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Image Developing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Image Transferring and Media Separation . . . . . . . . . . . . . .110

Image Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Paper Paths and Components . . . . . . . . . . . . . . . . . . . . . . . . . .112

Printer, Duplexer, and Envelope Feeder. . . . . . . . . . . . . . . .112

Paper Size Switches (Trays 2 and 3) . . . . . . . . . . . . . . . . . .115

Printing from Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Printing from Trays 2 and 3. . . . . . . . . . . . . . . . . . . . . . . . . .115

Printing from the Envelope Feeder. . . . . . . . . . . . . . . . . . . .116

Printing with the Duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . .116

Printing from the Custom Height and Size Paper Tray. . . . .116

2000-sheet Input Tray (Tray 4) Components . . . . . . . . . . . .117

2000-Sheet Input Tray Operation . . . . . . . . . . . . . . . . . . . . .119

2 x 500-sheet Input Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . .122

2 x 500-sheet Input Tray Operation . . . . . . . . . . . . . . . . . . .124

7-bin Tabletop Mailbox Components . . . . . . . . . . . . . . . . . .126

7-bin Tabletop Mailbox Operation. . . . . . . . . . . . . . . . . . . . .128

8-bin Mailbox Components. . . . . . . . . . . . . . . . . . . . . . . . . .132

8-bin Mailbox Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

Finisher Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137

Stapler Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

C4085-91087 Table of Contents ix

Main Functional Cycles of the Stapler

(Internal Paper Path) . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Communication Link (Daisy Chain). . . . . . . . . . . . . . . . . . . .142

Paper Jam Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

Printer Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

IEEE 1284 Parallel Cable Information. . . . . . . . . . . . . . . . . . . . .147

6 Removal and Replacement

Removal and Replacement Strategy. . . . . . . . . . . . . . . . . . . . . .150

Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

User Installable Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . .152

Hardware Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

Engine Removal and Replacement. . . . . . . . . . . . . . . . . . . . . . .162

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163

Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165

Delivery Unit (for Standard Output Bin) . . . . . . . . . . . . . . . .174

Diverter Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

Diverter Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .178

Lower Right Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . .179

Fan 1, Laser/Scanner and Housing (Exhaust) . . . . . . . . . . .182

Fan 2, Low Voltage Power Supply (Exhaust) . . . . . . . . . . . .184

Fan 3, Formatter Fan and Housing (Intake) . . . . . . . . . . . . .185

Fan 4, Delivery Unit (Exhaust) . . . . . . . . . . . . . . . . . . . . . . .186

Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187

Tray 1 Pickup Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

Feeder Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

Formatter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196

Fusing Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198

Laser/Scanner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .200

Main Gear Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202

Main Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205

Paper Input Unit (PIU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206

PCA, DC Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207

Output Paper Sensor PCA . . . . . . . . . . . . . . . . . . . . . . . . . .208

High Voltage Power Supply (HVPS). . . . . . . . . . . . . . . . . . .215

Low Voltage Power Supply (LVPS) . . . . . . . . . . . . . . . . . . .216

Registration Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217

Tray 1 Feed Roller and Separation Pad . . . . . . . . . . . . . . . .220

Tray 2 and 3 Pickup, Feed, and Separation Rollers. . . . . . .222

Paper Input Unit Sensor (PS2) . . . . . . . . . . . . . . . . . . . . . . .223

Registration Sensor (PS1) . . . . . . . . . . . . . . . . . . . . . . . . . .225

Face-up Solenoid Assembly (SL3) . . . . . . . . . . . . . . . . . . . .227

Transfer Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .228

Tray 2 and 3 Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . .230

x C4085-91087

2000-sheet Input Tray Removal and Replacement. . . . . . . . . . .231

Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232

Front Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233

Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234

Left Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235

Right Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .236

Main Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237

Paper Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239

Main Cable Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240

Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242

Front LED PCA Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . .244

Pickup Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248

Pickup, Feed, and Separation Rollers . . . . . . . . . . . . . . . . .250

Paper Quantity Switch Assembly . . . . . . . . . . . . . . . . . . . . .253

Paper Size Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . .253

Vertical Transfer Unit (VTU) . . . . . . . . . . . . . . . . . . . . . . . . .255

Tension Springs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .257

Locating Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .258

Casters and Stabilizing Feet. . . . . . . . . . . . . . . . . . . . . . . . .259

Adjustable Foot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .260

2 x 500-sheet Input Tray Removal and Replacement. . . . . . . . .261

Orientation of the 2 x 500-sheet Input Tray . . . . . . . . . . . . .262

Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263

Left Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264

Vertical Transfer Unit (VTU) . . . . . . . . . . . . . . . . . . . . . . . . .265

Right Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268

Front Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271

Trays 4 and 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274

Pickup Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276

Paper Deck Drive Assembly. . . . . . . . . . . . . . . . . . . . . . . . .278

Pickup, Feed, and Separation Rollers . . . . . . . . . . . . . . . . .280

Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281

Tray-Size Sensing PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . .282

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284

Main Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .285

Storage Paper Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287

Front Door (Storage Area) . . . . . . . . . . . . . . . . . . . . . . . . . .288

Casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .289

Foot Tip and Adjustable Foot Tip (Stabilizing Feet) . . . . . . .290

Locating Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .291

Front LED PCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .292

7-bin Tabletop Mailbox Removal and Replacement . . . . . . . . . .293

Orientation of the 7-bin Tabletop Mailbox. . . . . . . . . . . . . . .294

Front Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295

Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298

Top Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300

C4085-91087 Table of Contents xi

Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .305

Right Door Assembly (Paper Path Cover) . . . . . . . . . . . . . .306

Face-down Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310

Empty Bin Sensor PCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . .313

Full Bin and Interlock Sensor PCA . . . . . . . . . . . . . . . . . . . .315

LED PCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .317

Face-up Sensors PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . .318

Reversing Mechanism Motor . . . . . . . . . . . . . . . . . . . . . . . .319

Face-up/Diverter Assembly (Flipper) . . . . . . . . . . . . . . . . . .321

Short Tray 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .324

Solenoid Reversing Mechanism . . . . . . . . . . . . . . . . . . . . . .325

Flipper Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .326

Handle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .327

Latching Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328

Cover Latch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329

8-bin Mailbox Removal and Replacement. . . . . . . . . . . . . . . . . .330

Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331

Front and Back Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . .332

Top Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333

Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .334

Paper Bins and Blind Cover . . . . . . . . . . . . . . . . . . . . . . . . .335

Flipper Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .336

Delivery Head Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339

Transport Belt Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .340

Input Paper Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .342

Metal Tape and Housing Assembly . . . . . . . . . . . . . . . . . . .344

Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .346

Anticurl Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .348

Delivery Head Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . .350

Interlock Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355

Diagnostic LED PCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356

User Status LED PCA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .358

Adjustable and Fixed Casters. . . . . . . . . . . . . . . . . . . . . . . .360

Attachment Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .361

Stapler Assembly Removal and Replacement . . . . . . . . . . . . . .362

Mailbox with Stapler, Stapler Removal or Installation. . . . . .363

Back Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .365

Stapler Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . .367

Top Cover Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .370

Stapler Bed Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .371

Hinges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373

xii C4085-91087

7 Troubleshooting

Troubleshooting Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .376

Printer and Paper-Handling Troubleshooting Process . . . . .378

Troubleshooting the Printing System . . . . . . . . . . . . . . . . . . . . .380

Preliminary Operating Checks . . . . . . . . . . . . . . . . . . . . . . .380

General Troubleshooting Information . . . . . . . . . . . . . . . . . . . . .381

Miscellaneous Problems and Solutions . . . . . . . . . . . . . . . .381

Paper Curl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .386

Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .387

Engine Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .390

Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .391

Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .391

General Paper Path Troubleshooting . . . . . . . . . . . . . . . . . . . . .395

Paper Jams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .396

Paper Path Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .398

Printer Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .401

Control Panel Messages and Errors. . . . . . . . . . . . . . . . . . .401

Printer Message Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . .403

Self - Diagnostics on Paper-handling Devices . . . . . . . . . . . . . .440

2000-sheet Input Tray Stand-alone Diagnostics. . . . . . . . . .440

2 x 500-sheet Input Tray Standalone Diagnostics . . . . . . . .444

7-bin Tabletop Mailbox Standalone Diagnostics. . . . . . . . . .448

8-bin Mailbox Stand-alone Diagnostics. . . . . . . . . . . . . . . . .453

Information Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .461

Menu Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .461

Configuration Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .463

Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .467

Interface Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . .467

Image Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .469

Check the Toner Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . .470

Image Quality Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .471

Repetitive Defect Ruler. . . . . . . . . . . . . . . . . . . . . . . . . . . . .484

Image System Troubleshooting . . . . . . . . . . . . . . . . . . . . . .485

High-Voltage Power Supply Check. . . . . . . . . . . . . . . . . . . .486

Network Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .488

Verify Host System Operation. . . . . . . . . . . . . . . . . . . . . . . .490

Verify Network and Server Operation. . . . . . . . . . . . . . . . . .490

Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .491

8 Parts and Diagrams

How to Use the Part Lists and Diagrams . . . . . . . . . . . . . . . . . .506

Ordering Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .506

Accessories and Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507

Common Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507

Illustrations and Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507

Printer and Paper-Handling Components . . . . . . . . . . . . . . . . . .508

C4085-91087 Table of Contents xiii

Printer Parts and Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . .512

Paper-Handling Devices Parts and Diagrams. . . . . . . . . . . . . . .524

Input Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .524

Output Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .532

Alphabetical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .544

Numerical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .555

Index

xiv C4085-91087

List of Figures

Figure 1-1 Sample Model and Serial Number Label for the Printer - - - - - - 6 Figure 1-2 Orientation for Dimensions of Paper-handling Devices- - - - - - - 8 Figure 1-3 HP LaserJet 8000/N/DN Engine - Front and Right Side View

with Tray 1 Open - - - - - - - - - - - - - - - - - - - - - - - - 14 Figure 1-4 HP Mopier 240 - Front and Right Side View with Tray 1 Open - - 16 Figure 1-5 Rear and Left Side View - - - - - - - - - - - - - - - - - - - - 18 Figure 1-6 HP LaserJet 8000/N/DN Optional Paper Handling Devices- - - - 19 Figure 1-7 Sample 5% Page Coverage- - - - - - - - - - - - - - - - - - - 29 Figure 2-1 Printer Space Requirements (Top view) - - - - - - - - - - - - - 47 Figure 2-2 Printer Space Requirements (Side view)- - - - - - - - - - - - - 47 Figure 2-3 Printer Space Requirements (with 8-bin Mailbox and

Input Device) - - - - - - - - - - - - - - - - - - - - - - - - - - 48 Figure 3-1 Control Panel Layout - - - - - - - - - - - - - - - - - - - - - - 52 Figure 4-1 Image Area Margins - - - - - - - - - - - - - - - - - - - - - - 86 Figure 4-2 Tray Position Adjustment - - - - - - - - - - - - - - - - - - - - 87 Figure 4-3 Tray 4 Position Adjustment - - - - - - - - - - - - - - - - - - - 88 Figure 5-1 Printer Functional Block Diagram - - - - - - - - - - - - - - - - 92 Figure 5-2 Low Voltage Power Distribution System - - - - - - - - - - - - - 93 Figure 5-3 Low Voltage Power Supply - - - - - - - - - - - - - - - - - - - 94 Figure 5-4 High Voltage Power Supply Contacts - - - - - - - - - - - - - - 95 Figure 5-5 Normal Mode vs EconoMode - - - - - - - - - - - - - - - - - - 98 Figure 5-6 Image Formation Block Diagram - - - - - - - - - - - - - - - - 101 Figure 5-7 Photosensitive Drum - - - - - - - - - - - - - - - - - - - - - - 103 Figure 5-8 Drum Cleaning - - - - - - - - - - - - - - - - - - - - - - - - - 104 Figure 5-9 Primary Charging Roller- - - - - - - - - - - - - - - - - - - - - 105 Figure 5-10 Image Writing- - - - - - - - - - - - - - - - - - - - - - - - - - 106 Figure 5-11 Image Development - - - - - - - - - - - - - - - - - - - - - - 109 Figure 5-12 Image Transferring and Media Separation- - - - - - - - - - - - 110 Figure 5-13 Image Fusing- - - - - - - - - - - - - - - - - - - - - - - - - - 111 Figure 5-14 Printer Paper Paths- - - - - - - - - - - - - - - - - - - - - - - 112 Figure 5-15 Printer Sensors, Solenoids, Clutches, Motors, and Fans - - - - - 114 Figure 5-16 2000-sheet Input Tray Paper Path- - - - - - - - - - - - - - - - 117 Figure 5-17 2000-sheet Input Tray Sensors, Switches, Clutches,

and Motors - - - - - - - - - - - - - - - - - - - - - - - - - - - 119 Figure 5-18 2 x 500-sheet Input Tray Paper Path - - - - - - - - - - - - - - 122 Figure 5-19 2 x 500-sheet input Tray Sensors and Switches - - - - - - - - - 123 Figure 5-20 7-bin Tabletop Mailbox Components (1 of 2)- - - - - - - - - - - 126 Figure 5-21 7-bin Tabletop Mailbox Components (2 of 2)- - - - - - - - - - - 127 Figure 5-22 7-bin Tabletop Mailbox Block Diagram- - - - - - - - - - - - - - 131 Figure 5-23 8-bin Mailbox Paper Path - - - - - - - - - - - - - - - - - - - - 132 Figure 5-24 8-bin Mailbox Sensors, Switches, Motors, and Controller PCA - - 134

C4085-91087 xv

Figure 5-25 Finisher Paper Path- - - - - - - - - - - - - - - - - - - - - - - 138 Figure 5-26 Stapler Motors, Sensors, and Switches - - - - - - - - - - - - - 138 Figure 5-27 Stapler Cycles - - - - - - - - - - - - - - - - - - - - - - - - - 141 Figure 5-28 Recommended C-link Configuration (Daisy Chain)- - - - - - - - 143 Figure 5-29 General Timing Diagram (1 of 2) - - - - - - - - - - - - - - - - 145 Figure 5-30 General Timing Diagram (2 of 2) - - - - - - - - - - - - - - - - 146 Figure 6-1 Phillips vs. Posidriv Screwdrivers - - - - - - - - - - - - - - - - 151 Figure 6-2 Disk Drive - - - - - - - - - - - - - - - - - - - - - - - - - - - 153 Figure 6-3 Control Panel (1 of 2) - - - - - - - - - - - - - - - - - - - - - - 163 Figure 6-4 Control Panel (2 of 2) - - - - - - - - - - - - - - - - - - - - - - 164 Figure 6-5 AC Access Cover- - - - - - - - - - - - - - - - - - - - - - - - 166 Figure 6-6 Back Cover- - - - - - - - - - - - - - - - - - - - - - - - - - - 167 Figure 6-7 Front Cover (1 of 2)- - - - - - - - - - - - - - - - - - - - - - - 168 Figure 6-8 Front Cover (2 of 2)- - - - - - - - - - - - - - - - - - - - - - - 169 Figure 6-9 Left Lower Cover - - - - - - - - - - - - - - - - - - - - - - - - 170 Figure 6-10 Top Cover (1 of 2) - - - - - - - - - - - - - - - - - - - - - - - 171 Figure 6-11 Top Cover (2 of 2) - - - - - - - - - - - - - - - - - - - - - - - 172 Figure 6-12 Delivery Unit (1 of 2) - - - - - - - - - - - - - - - - - - - - - - 174 Figure 6-13 Delivery Unit (2 of 2) - - - - - - - - - - - - - - - - - - - - - - 175 Figure 6-14 Diverter Assembly - - - - - - - - - - - - - - - - - - - - - - - 177 Figure 6-15 Diverter Door Assembly- - - - - - - - - - - - - - - - - - - - - 178 Figure 6-16 Lower Right Door Assembly (1 of 3)- - - - - - - - - - - - - - - 179 Figure 6-17 Right Lower Door Assembly (2 of 3)- - - - - - - - - - - - - - - 180 Figure 6-18 Right Lower Door Assembly (3 of 3)- - - - - - - - - - - - - - - 181 Figure 6-19 Fan 1, Laser/Scanner (1 of 2) - - - - - - - - - - - - - - - - - - 182 Figure 6-20 Fan 1, Laser/Scanner (2 of 2) - - - - - - - - - - - - - - - - - - 183 Figure 6-21 Fan 2, Low Voltage Power Supply- - - - - - - - - - - - - - - - 184 Figure 6-22 Fan 3, Formatter Fan - - - - - - - - - - - - - - - - - - - - - - 185 Figure 6-23 Fan 4, Delivery Unit- - - - - - - - - - - - - - - - - - - - - - - 186 Figure 6-24 Tray 1 Removal (1 of 3)- - - - - - - - - - - - - - - - - - - - - 187 Figure 6-25 Tray 1 Removal (2 of 3)- - - - - - - - - - - - - - - - - - - - - 188 Figure 6-26 Tray 1 Removal (3 of 3)- - - - - - - - - - - - - - - - - - - - - 189 Figure 6-27 Tray 1 Pickup Unit Removal (1 of 4)- - - - - - - - - - - - - - - 190 Figure 6-28 Tray 1 Pickup Unit Removal (2 of 4)- - - - - - - - - - - - - - - 191 Figure 6-29 Tray 1 Pickup Unit Removal (3 of 4)- - - - - - - - - - - - - - - 192 Figure 6-30 Tray 1 Pickup Unit Removal (4 of 4)- - - - - - - - - - - - - - - 193 Figure 6-31 Feeder Assembly (1 of 2) - - - - - - - - - - - - - - - - - - - - 194 Figure 6-32 Feeder Assembly (2 of 2) - - - - - - - - - - - - - - - - - - - - 195 Figure 6-33 Formatter Assembly - - - - - - - - - - - - - - - - - - - - - - 197 Figure 6-34 Fusing Assembly - - - - - - - - - - - - - - - - - - - - - - - - 198 Figure 6-35 Laser/Scanner Assembly - - - - - - - - - - - - - - - - - - - - 200 Figure 6-36 Main Gear Assembly (1 of 3) - - - - - - - - - - - - - - - - - - 202 Figure 6-37 Main Gear Assembly (2 of 3) - - - - - - - - - - - - - - - - - - 203 Figure 6-38 Main Gear Assembly (3 of 3) - - - - - - - - - - - - - - - - - - 204 Figure 6-39 Main Motor - - - - - - - - - - - - - - - - - - - - - - - - - - - 205 Figure 6-40 Paper Input Unit - - - - - - - - - - - - - - - - - - - - - - - - 206 Figure 6-41 DC Controller PCA - - - - - - - - - - - - - - - - - - - - - - - 207

xvi C4085-91087

Figure 6-42 Output Paper Sensor PCA (1 of 4) - - - - - - - - - - - - - - - 208 Figure 6-43 Output Paper Sensor PCA (2 of 4) - - - - - - - - - - - - - - - 209 Figure 6-44 Output Paper Sensor PCA (3 of 4) - - - - - - - - - - - - - - - 210 Figure 6-45 Output Paper Sensor PCA (4 of 4) - - - - - - - - - - - - - - - 211 Figure 6-46 Paper Size PCA (1 of 3)- - - - - - - - - - - - - - - - - - - - - 212 Figure 6-47 Paper Size PCA (2 of 3)- - - - - - - - - - - - - - - - - - - - - 213 Figure 6-48 Paper Size PCA (3 of 3)- - - - - - - - - - - - - - - - - - - - - 214 Figure 6-49 High Voltage Power Supply - - - - - - - - - - - - - - - - - - - 215 Figure 6-50 Low Voltage Power Supply - - - - - - - - - - - - - - - - - - - 216 Figure 6-51 Registration Assembly (1 of 3) - - - - - - - - - - - - - - - - - 217 Figure 6-52 Registration Assembly (2 of 3) - - - - - - - - - - - - - - - - - 218 Figure 6-53 Registration Assembly (3 of 3) - - - - - - - - - - - - - - - - - 219 Figure 6-54 Tray 1 Feed Roller - - - - - - - - - - - - - - - - - - - - - - - 220 Figure 6-55 Tray 1 Separation Pad - - - - - - - - - - - - - - - - - - - - - 221 Figure 6-56 Tray 2 and 3, Pickup, Feed, and Separation Rollers - - - - - - - 222 Figure 6-57 Paper Input Unit Sensor (PS2) - - - - - - - - - - - - - - - - - 224 Figure 6-58 Registration Sensor (PS1) - - - - - - - - - - - - - - - - - - - 226 Figure 6-59 Face-up Solenoid Assembly, SL3 - - - - - - - - - - - - - - - - 227 Figure 6-60 Transfer Roller Assembly - - - - - - - - - - - - - - - - - - - - 228 Figure 6-61 2000-sheet Input Tray Orientation- - - - - - - - - - - - - - - - 232 Figure 6-62 2000-sheet Input Tray Front Cover - - - - - - - - - - - - - - - 233 Figure 6-63 2000-sheet Input Tray Back Cover - - - - - - - - - - - - - - - 234 Figure 6-64 2000-sheet Input Tray Left Cover - - - - - - - - - - - - - - - - 235 Figure 6-65 2000-sheet Input Tray Right Cover - - - - - - - - - - - - - - - 236 Figure 6-66 2000-sheet Input Tray Main Drive Assembly- - - - - - - - - - - 237 Figure 6-67 2000-sheet Input Tray Paper Tray- - - - - - - - - - - - - - - - 239 Figure 6-68 2000-sheet Input Tray Main Cable Harness - - - - - - - - - - - 241 Figure 6-69 2000-sheet Input Tray Controller PCA- - - - - - - - - - - - - - 242 Figure 6-70 2000-sheet Input Tray Front LED PCA - - - - - - - - - - - - - 245 Figure 6-71 2000-sheet Input Tray Pickup Assembly- - - - - - - - - - - - - 246 Figure 6-72 2000-sheet Input Tray Power Supply - - - - - - - - - - - - - - 248 Figure 6-73 2000-sheet Input Tray Rollers: Pickup, Feed, and Separation - - 251 Figure 6-74 2000-sheet Input Tray Paper Size and Paper Quantity Switch - - 254 Figure 6-75 2000-sheet Input Tray Paper Size and Paper Quantity Switch

Assemblies (2 of 2) - - - - - - - - - - - - - - - - - - - - - - - 254 Figure 6-76 2000-sheet Input Tray Vertical Transfer Unit (VTU) - - - - - - - 255 Figure 6-77 2000-sheet Input Tray Tension Springs - - - - - - - - - - - - - 257 Figure 6-78 2000-sheet Input Tray Locating Pins - - - - - - - - - - - - - - 258 Figure 6-79 2000-sheet Input Tray Casters - - - - - - - - - - - - - - - - - 259 Figure 6-80 2000-sheet Input Tray Adjustable Foot - - - - - - - - - - - - - 260 Figure 6-81 Orientation of the 2 x 500-sheet Input Tray - - - - - - - - - - - 262 Figure 6-82 Back Cover- - - - - - - - - - - - - - - - - - - - - - - - - - - 263 Figure 6-83 Left Cover - - - - - - - - - - - - - - - - - - - - - - - - - - - 264 Figure 6-84 Vertical Transfer Unit (VTU) (1 of 3) - - - - - - - - - - - - - - - 265 Figure 6-85 Vertical Transfer Unit (VTU) (2 of 3) - - - - - - - - - - - - - - - 266 Figure 6-86 Vertical Transfer Unit (VTU) (3 of 3) - - - - - - - - - - - - - - - 267 Figure 6-87 Right Cover (1 of 3)- - - - - - - - - - - - - - - - - - - - - - - 268

C4085-91087 List of Figures xvii

Figure 6-88 Right Cover (2 of 3)- - - - - - - - - - - - - - - - - - - - - - - 269 Figure 6-89 Right Cover (3 of 3)- - - - - - - - - - - - - - - - - - - - - - - 270 Figure 6-90 Front Top Cover (1 of 3) - - - - - - - - - - - - - - - - - - - - 271 Figure 6-91 Front Top Cover (2 of 3) - - - - - - - - - - - - - - - - - - - - 272 Figure 6-92 Front Top Cover (3 of 3) - - - - - - - - - - - - - - - - - - - - 273 Figure 6-93 Trays 4 and 5 (1 of 2) - - - - - - - - - - - - - - - - - - - - - - 274 Figure 6-94 Trays 4 and 5 (2 of 2) - - - - - - - - - - - - - - - - - - - - - - 275 Figure 6-95 Pickup Assembly (1 of 2) - - - - - - - - - - - - - - - - - - - - 276 Figure 6-96 Pickup Assembly (2 of 2) - - - - - - - - - - - - - - - - - - - - 277 Figure 6-97 Paper Deck Drive Assembly (1 of 2)- - - - - - - - - - - - - - - 278 Figure 6-98 Paper Deck Drive Assembly (2 of 2)- - - - - - - - - - - - - - - 279 Figure 6-99 Pickup, Feed, and Separation Rollers - - - - - - - - - - - - - - 280 Figure 6-100 2 x 500-sheet Input Tray Controller PCA- - - - - - - - - - - - - 281 Figure 6-101 Tray-Size Sensing PCA (1 of 2) - - - - - - - - - - - - - - - - - 282 Figure 6-102 Tray-Size Sensing PCA (2 of 2) - - - - - - - - - - - - - - - - - 283 Figure 6-103 Power Supply- - - - - - - - - - - - - - - - - - - - - - - - - - 284 Figure 6-104 Main Cable (1 of 2) - - - - - - - - - - - - - - - - - - - - - - - 285 Figure 6-105 Main Cable (2 of 2) - - - - - - - - - - - - - - - - - - - - - - - 286 Figure 6-106 Storage Paper Tray - - - - - - - - - - - - - - - - - - - - - - - 287 Figure 6-107 Front Door (Storage Area) - - - - - - - - - - - - - - - - - - - 288 Figure 6-108 Casters- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 289 Figure 6-109 Foot Tip and Adjustable Foot Tip - - - - - - - - - - - - - - - - 290 Figure 6-110 Locating Pins - - - - - - - - - - - - - - - - - - - - - - - - - - 291 Figure 6-111 Front LED PCA - - - - - - - - - - - - - - - - - - - - - - - - - 292 Figure 6-112 Orientation of the 7-bin Tabletop Mailbox - - - - - - - - - - - - 294 Figure 6-113 Front cover (1 of 3) - - - - - - - - - - - - - - - - - - - - - - - 295 Figure 6-114 Front cover (2 of 3) - - - - - - - - - - - - - - - - - - - - - - - 296 Figure 6-115 Front cover (3 of 3) - - - - - - - - - - - - - - - - - - - - - - - 297 Figure 6-116 Back cover (1 of 2) - - - - - - - - - - - - - - - - - - - - - - - 298 Figure 6-117 Back cover (2 of 2) - - - - - - - - - - - - - - - - - - - - - - - 299 Figure 6-118 Top cover (1 of 4)- - - - - - - - - - - - - - - - - - - - - - - - 300 Figure 6-119 Top cover (2 of 4)- - - - - - - - - - - - - - - - - - - - - - - - 301 Figure 6-120 Top cover (3 of 4)- - - - - - - - - - - - - - - - - - - - - - - - 302 Figure 6-121 Top cover (4 of 4)- - - - - - - - - - - - - - - - - - - - - - - - 303 Figure 6-122 Mailbox Controller PCA - - - - - - - - - - - - - - - - - - - - - 304 Figure 6-123 Mailbox Power Supply - - - - - - - - - - - - - - - - - - - - - 305 Figure 6-124 Right Door Assembly (Paper Path Cover) (1 of 5) - - - - - - - - 306 Figure 6-125 Right Door Assembly (Paper Path Cover) (2 of 5) - - - - - - - - 307 Figure 6-126 Right Door Assembly (Paper Path Cover) (3 of 5) - - - - - - - - 307 Figure 6-127 Right Door Assembly (Paper Path Cover) (3 of 5) - - - - - - - - 308 Figure 6-128 Right Door Assembly (Paper Path Cover) (4 of 5) - - - - - - - - 309 Figure 6-129 Face-down Bins (1 of 3)- - - - - - - - - - - - - - - - - - - - - 310 Figure 6-130 Face-down Bins (2 of 3)- - - - - - - - - - - - - - - - - - - - - 311 Figure 6-131 Face-down Bins (3 of 3)- - - - - - - - - - - - - - - - - - - - - 312 Figure 6-132 Empty Bin Sensor PCA (1 of 2) - - - - - - - - - - - - - - - - - 313 Figure 6-133 Empty Bin Sensor PCA (2 of 2) - - - - - - - - - - - - - - - - - 314 Figure 6-134 Full Bin and Interlock Sensor PCA (1 of 2)- - - - - - - - - - - - 315

xviii C4085-91087

Figure 6-135 Full Bin and Interlock Sensor PCA (2 of 2)- - - - - - - - - - - - 316 Figure 6-136 LED PCA - - - - - - - - - - - - - - - - - - - - - - - - - - - - 317 Figure 6-137 Face-up Sensors PCA - - - - - - - - - - - - - - - - - - - - - 318 Figure 6-138 Reversing Mechanism Motor (1 of 2) - - - - - - - - - - - - - - 319 Figure 6-139 Reversing Mechanism Motor (2 of 2) - - - - - - - - - - - - - - 320 Figure 6-140 Face-up/Diverter Assembly (Flipper) (1 of 3)- - - - - - - - - - - 321 Figure 6-141 Face-up/Diverter Assembly (Flipper) (2 of 3)- - - - - - - - - - - 322 Figure 6-142 Face-up/Diverter Assembly (Flipper) (3 of 3)- - - - - - - - - - - 323 Figure 6-143 Short Tray 7 - - - - - - - - - - - - - - - - - - - - - - - - - - 324 Figure 6-144 Solenoid Reversing Mechanism - - - - - - - - - - - - - - - - - 325 Figure 6-145 Flipper Solenoid - - - - - - - - - - - - - - - - - - - - - - - - 326 Figure 6-146 7-bin Tabletop Mailbox Handle - - - - - - - - - - - - - - - - - 327 Figure 6-147 Latching Mechanism - - - - - - - - - - - - - - - - - - - - - - 328 Figure 6-148 Cover Latch - - - - - - - - - - - - - - - - - - - - - - - - - - 329 Figure 6-149 Orientation of the 8-bin Mailbox - - - - - - - - - - - - - - - - - 331 Figure 6-150 8-bin Mailbox Covers (Front and Back) - - - - - - - - - - - - - 332 Figure 6-151 8-bin Mailbox Top Cover - - - - - - - - - - - - - - - - - - - - 333 Figure 6-152 8-bin Mailbox Power Supply- - - - - - - - - - - - - - - - - - - 334 Figure 6-153 8-bin Mailbox Paper Bins and Blind Cover - - - - - - - - - - - - 335 Figure 6-154 8-bin Mailbox Flipper Assembly (1 of 3) - - - - - - - - - - - - - 336 Figure 6-155 8-bin Mailbox Flipper Assembly (2 of 3) - - - - - - - - - - - - - 337 Figure 6-156 8-bin Mailbox Flipper Assembly (3 of 3) - - - - - - - - - - - - - 338 Figure 6-157 8-bin Mailbox Delivery Head Motor - - - - - - - - - - - - - - - 339 Figure 6-158 8-bin Mailbox Transport Belt Motor - - - - - - - - - - - - - - - 340 Figure 6-159 8-bin Mailbox Input Paper Guide (1 of 2)- - - - - - - - - - - - - 342 Figure 6-160 8-bin Mailbox Input Paper Guide (2 of 2)- - - - - - - - - - - - - 343 Figure 6-161 8-bin Mailbox Metal Tape and Housing Assembly (1 of 2) - - - - 344 Figure 6-162 8-bin Mailbox Metal Tape and Housing Assembly (2 of 2) - - - - 345 Figure 6-163 8-bin Mailbox Controller PCA (1 of 2) - - - - - - - - - - - - - - 346 Figure 6-164 8-bin Mailbox Controller PCA (2 of 2) - - - - - - - - - - - - - - 347 Figure 6-165 8-bin Mailbox Anticurl Strings (1 of 2) - - - - - - - - - - - - - - 348 Figure 6-166 8-bin Mailbox Anticurl Strings (2 of 2) - - - - - - - - - - - - - - 349 Figure 6-167 8-bin Mailbox Delivery Head Assembly (1 of 4) - - - - - - - - - 350 Figure 6-168 8-bin Mailbox Delivery Head Assembly (2 of 4) - - - - - - - - - 351 Figure 6-169 8-bin Mailbox Delivery Head Assembly (3 of 4) - - - - - - - - - 352 Figure 6-170 8-bin Mailbox Delivery Head Assembly (4 of 4) - - - - - - - - - 353 Figure 6-171 8-bin Mailbox Interlock Switch- - - - - - - - - - - - - - - - - - 355 Figure 6-172 8-bin Mailbox Diagnostic LED PCA (1 of 2) - - - - - - - - - - - 356 Figure 6-173 8-bin Mailbox Diagnostic LED PCA (2 of 2) - - - - - - - - - - - 357 Figure 6-174 8-bin Mailbox User Status LED PCA (1 of 2)- - - - - - - - - - - 358 Figure 6-175 8-bin Mailbox User Status LED PCA (2 of 2)- - - - - - - - - - - 359 Figure 6-176 8-bin Mailbox Adjustable and Fixed Casters - - - - - - - - - - - 360 Figure 6-177 8-bin Mailbox Attachment Assembly- - - - - - - - - - - - - - - 361 Figure 6-178 Mailbox with Stapler, Stapler Removal or Installation- - - - - - - 363 Figure 6-179 C-link Cable on Mailbox with Stapler - - - - - - - - - - - - - - 364 Figure 6-180 Back Plate (1 of 2) - - - - - - - - - - - - - - - - - - - - - - - 365 Figure 6-181 Back Plate (2 of 2) - - - - - - - - - - - - - - - - - - - - - - - 366

C4085-91087 List of Figures xix

Figure 6-182 Stapler Controller PCA (1 of 3) - - - - - - - - - - - - - - - - - 367 Figure 6-183 Stapler Controller PCA (2 of 3) - - - - - - - - - - - - - - - - - 368 Figure 6-184 Stapler Controller PCA (3 of 3) - - - - - - - - - - - - - - - - - 369 Figure 6-185 Top Cover Assembly - - - - - - - - - - - - - - - - - - - - - - 370 Figure 6-186 Stapler Bed Assembly - - - - - - - - - - - - - - - - - - - - - 371 Figure 6-187 Hinges - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 373 Figure 7-1 Printer and Paper-Handling Troubleshooting Process (1 of 2) - - 378 Figure 7-2 Printer and Paper-Handling Troubleshooting Process (2 of 2) - - 379 Figure 7-3 Fan Location and Airflow - - - - - - - - - - - - - - - - - - - - 389 Figure 7-4 Engine Test Button - - - - - - - - - - - - - - - - - - - - - - - 390 Figure 7-5 Sample Event Log - - - - - - - - - - - - - - - - - - - - - - - 392 Figure 7-6 Paper Path Jam Locations - - - - - - - - - - - - - - - - - - - 397 Figure 7-7 Paper Path Test Source and Output Selection- - - - - - - - - - 399 Figure 7-8 Error Format for Paper Handling - - - - - - - - - - - - - - - - 402 Figure 7-9 8-bin Mailbox LEDs Description - - - - - - - - - - - - - - - - - 453 Figure 7-10 8-bin Mailbox Power Supply Test Mode Switch - - - - - - - - - 454 Figure 7-11 Sample Menu Map - - - - - - - - - - - - - - - - - - - - - - - 462 Figure 7-12 Sample Configuration Page - - - - - - - - - - - - - - - - - - - 464 Figure 7-13 Communications Link (C-link) Cables, Supported Daisy

Chain Connections - - - - - - - - - - - - - - - - - - - - - - - 467 Figure 7-14 Repetitive Defect Ruler - - - - - - - - - - - - - - - - - - - - - 484 Figure 7-15 High Voltage Power Supply Contacts - - - - - - - - - - - - - - 487 Figure 7-16 Sample JetDirect Configuration Page - - - - - - - - - - - - - - 489 Figure 7-17 Printer Sensors and Switches - - - - - - - - - - - - - - - - - - 492 Figure 7-18 Printer Motor, Clutches, and Solenoids - - - - - - - - - - - - - 493 Figure 7-19 DC Controller Inputs and Outputs (1 of 5) - - - - - - - - - - - - 494 Figure 7-20 DC Controller Inputs and Outputs (2 of 5) - - - - - - - - - - - - 495 Figure 7-21 DC Controller Inputs and Outputs (3 of 5) - - - - - - - - - - - - 496 Figure 7-22 DC Controller Inputs and Outputs (4 of 5) - - - - - - - - - - - - 497 Figure 7-23 DC Controller Inputs and Outputs (5 of 5) - - - - - - - - - - - - 498 Figure 7-24 Mailbox with Stapler Wiring Diagram - - - - - - - - - - - - - - 499 Figure 7-25 2000-sheet Input Tray Controller PCA Inputs - - - - - - - - - - 500 Figure 7-26 2000-sheet Input Tray Controller PCA Outputs - - - - - - - - - 501 Figure 7-27 2000-sheet Input Tray Main Wiring Diagram- - - - - - - - - - - 502 Figure 7-28 8-bin Mailbox Main Wiring Diagram - - - - - - - - - - - - - - - 503 Figure 8-1 HP LaserJet 8000/8000N/8000DN or Mopier 240 Printer

and Paper-Handling Components - - - - - - - - - - - - - - - - 508 Figure 8-2 Printer Covers and Doors - - - - - - - - - - - - - - - - - - - - 512 Figure 8-3 Printer Internal Components (1 of 4)- - - - - - - - - - - - - - - 514 Figure 8-4 Printer Internal Components (2 of 4)- - - - - - - - - - - - - - - 516 Figure 8-5 Printer Internal Components (3 of 4)- - - - - - - - - - - - - - - 520 Figure 8-6 Printer Internal Components (4 of 4)- - - - - - - - - - - - - - - 522 Figure 8-7 2000-sheet Input Tray Components (1 of 2) - - - - - - - - - - - 524 Figure 8-8 2000-sheet Input Tray Components (2 of 2) - - - - - - - - - - - 526 Figure 8-9 2 x 500-sheet Input Tray Internal Components- - - - - - - - - - 528 Figure 8-10 7-bin Tabletop Mailbox Internal Components - - - - - - - - - - 532 Figure 8-11 8-bin Mailbox Components (1 of 3) - - - - - - - - - - - - - - - 536

xx C4085-91087

Figure 8-12 8-bin Mailbox Components (2 of 3) - - - - - - - - - - - - - - - 538 Figure 8-13 8-bin Mailbox Components (3 of 3) - - - - - - - - - - - - - - - 540 Figure 8-14 Stapler Internal Components - - - - - - - - - - - - - - - - - - 542

C4085-91087 List of Figures xxi

xxii C4085-91087

List of Tables

Table 1-1. Common features between the HP LaserJet 8000,

HP LaserJet 8000 N, HP LaserJet 8000 DN, and

HP Mopier 240 - - - - - - - - - - - - - - - - - - - - - - - - - - 2 Table 1-2. Comparison of Printer Features - - - - - - - - - - - - - - - - - - 3 Table 1-3. Paper Capacities and Sizes - - - - - - - - - - - - - - - - - - - - 4 Table 1-4. Dimensions of Printer and Paper-handling Devices - - - - - - - - 7 Table 1-5. Dimensions of Output Devices - - - - - - - - - - - - - - - - - - 8 Table 1-6. Electrical Specifications - - - - - - - - - - - - - - - - - - - - - - 9 Table 1-7. Acoustic Emissions - - - - - - - - - - - - - - - - - - - - - - - 10 Table 1-8. Accessories and Options - - - - - - - - - - - - - - - - - - - - 20 Table 1-9. Minimum Memory Requirements - - - - - - - - - - - - - - - - 27 Table 2-1. Printer and Toner Cartridge Environmental Conditions - - - - - - 49 Table 3-1. Control Panel Keys - - - - - - - - - - - - - - - - - - - - - - - 52 Table 3-2. Indicator Lights - - - - - - - - - - - - - - - - - - - - - - - - - 53 Table 3-3. Factory Default Settings- - - - - - - - - - - - - - - - - - - - - 56 Table 3-4. Information Menu - - - - - - - - - - - - - - - - - - - - - - - - 59 Table 3-5. Paper Handling Menu- - - - - - - - - - - - - - - - - - - - - - 60 Table 3-6. Print Quality Menu - - - - - - - - - - - - - - - - - - - - - - - 62 Table 3-7. Printing Menu- - - - - - - - - - - - - - - - - - - - - - - - - - 64 Table 3-8. Configuration Menu - - - - - - - - - - - - - - - - - - - - - - - 67 Table 3-9. I/O Menu - - - - - - - - - - - - - - - - - - - - - - - - - - - - 70 Table 3-10. EIO Menu - - - - - - - - - - - - - - - - - - - - - - - - - - - 72 Table 3-11. Resets Menu - - - - - - - - - - - - - - - - - - - - - - - - - - 74 Table 3-12. Service Mode Menu Items - - - - - - - - - - - - - - - - - - - 76 Table 4-1. Cleaning the Printer- - - - - - - - - - - - - - - - - - - - - - - 84 Table 5-1. Printer Sensors, Solenoids, Clutches, Motors, and Fans - - - - - 113 Table 5-2. Paper Size Switches - - - - - - - - - - - - - - - - - - - - - - 115 Table 5-3. 2000-sheet Input Tray Sensors, Switches, Clutches and Motors - 118 Table 5-4. 2000-sheet Input Tray Paper Quantity Switches - - - - - - - - - 120 Table 5-5. 2000-sheet Input Tray Paper Size Switches - - - - - - - - - - - 120 Table 5-6. 2 x 500-sheet Input Tray Sensors, Switches, and Motors- - - - - 123 Table 5-7. 2 x 500-sheet Input Tray Switches- - - - - - - - - - - - - - - - 124 Table 5-8. 7-bin Tabletop Mailbox Sensors, Switches, and Motors - - - - - 127 Table 5-9. 8-bin Mailbox Sensors, Switches, Motors, and Controller PCA - - 133 Table 5-10. Stapler Motors, Sensors, and Switches - - - - - - - - - - - - - 139 Table 5-11. Printer Timing- - - - - - - - - - - - - - - - - - - - - - - - - - 144 Table 5-12. Parallel Cable Pin Assignments - - - - - - - - - - - - - - - - - 147 Table 6-1. Hardware Table- - - - - - - - - - - - - - - - - - - - - - - - - 160 Table 7-1. Major Steps for Troubleshooting- - - - - - - - - - - - - - - - - 376 Table 7-2. Paper Curl - - - - - - - - - - - - - - - - - - - - - - - - - - - 386 Table 7-3. Power On Defects or Blank Display - - - - - - - - - - - - - - - 387

C4085-91087 xxiii

Table 7-4. Fans - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 389 Table 7-5. General Paper Path Troubleshooting Questions - - - - - - - - - 395 Table 7-6. Engine Error Messages - - - - - - - - - - - - - - - - - - - - - 404 Table 7-7. 2000-sheet Input Tray Error Messages - - - - - - - - - - - - - 416 Table 7-8. 2 x 500-sheet Input Tray Error Messages - - - - - - - - - - - - 420 Table 7-9. Envelope Feeder Error Messages - - - - - - - - - - - - - - - - 423 Table 7-10. 7-bin Tabletop Mailbox Error Messages - - - - - - - - - - - - - 424 Table 7-11. 8-bin Mailbox Error Messages- - - - - - - - - - - - - - - - - - 429 Table 7-12. Stapler Error Messages - - - - - - - - - - - - - - - - - - - - - 435 Table 7-13. Duplexer Error Messages - - - - - - - - - - - - - - - - - - - - 438 Table 7-14. Paper Handling Controller Error Messages - - - - - - - - - - - 439 Table 7-15. DIP Switch Settings- - - - - - - - - - - - - - - - - - - - - - - 442 Table 7-16. 2000-sheet Input Tray LED Status Interpretation- - - - - - - - - 443 Table 7-17. DIP Switch Settings for troubleshooting test procedures - - - - - 445 Table 7-18. Patterns of LED flashing (2-second pause between each

pattern)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 447 Table 7-19. DIP switch settings for troubleshooting test - - - - - - - - - - - 448 Table 7-20. Patterns of Flashing LEDs - - - - - - - - - - - - - - - - - - - 450 Table 7-21. 8-bin Mailbox LED Status Interpretation - - - - - - - - - - - - - 456 Table 7-22. Key to Figure 7-11 - - - - - - - - - - - - - - - - - - - - - - - 462 Table 7-23. Printer Devices Troubleshooting- - - - - - - - - - - - - - - - - 466 Table 7-24. Image Quality- - - - - - - - - - - - - - - - - - - - - - - - - - 469 Table 7-25. Blank (White) Page - - - - - - - - - - - - - - - - - - - - - - - 471 Table 7-26. Black Pages - - - - - - - - - - - - - - - - - - - - - - - - - - 471 Table 7-27. Fading Print - - - - - - - - - - - - - - - - - - - - - - - - - - 472 Table 7-28. Dropout- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 474 Table 7-29. Black Lines (parallel or perpendicular to path) - - - - - - - - - - 474 Table 7-30. Toner Smear - - - - - - - - - - - - - - - - - - - - - - - - - - 475 Table 7-31. Background Scatter- - - - - - - - - - - - - - - - - - - - - - - 476 Table 7-32. Repetitive Defects - - - - - - - - - - - - - - - - - - - - - - - 477 Table 7-33. Line at Edge of Paper- - - - - - - - - - - - - - - - - - - - - - 478 Table 7-34. Misshapen Characters, Voids - - - - - - - - - - - - - - - - - - 479 Table 7-35. Faulty Registration - - - - - - - - - - - - - - - - - - - - - - - 480 Table 7-36. Image Skew - - - - - - - - - - - - - - - - - - - - - - - - - - 480 Table 7-37. Bubble Print - - - - - - - - - - - - - - - - - - - - - - - - - - 481 Table 7-38. White Stripes Parallel to Path - - - - - - - - - - - - - - - - - - 482 Table 7-39. Partial Blank Page - - - - - - - - - - - - - - - - - - - - - - - 482 Table 7-40. Compressed Print- - - - - - - - - - - - - - - - - - - - - - - - 483 Table 7-41. Blank Portion in the Middle of the Page (Tray 4 Input only)- - - - 483 Table 8-1. Printer and Paper-Handling Components - - - - - - - - - - - - 509 Table 8-2. Printer Covers and Doors - - - - - - - - - - - - - - - - - - - - 513 Table 8-3. Printer Internal Components (1 of 4)- - - - - - - - - - - - - - - 515 Table 8-4. Printer Internal Components (2 of 4)- - - - - - - - - - - - - - - 517 Table 8-5. Printer Internal Components (3 of 4)- - - - - - - - - - - - - - - 521 Table 8-6. Printer Internal Components (4 of 4)- - - - - - - - - - - - - - - 523 Table 8-7. 2000-sheet Input Tray Components (1 of 2) - - - - - - - - - - - 525 Table 8-8. 2000-sheet Input Tray Components (2 of 2) - - - - - - - - - - - 527

xxiv C4085-91087

Table 8-9. 2 x 500-sheet Input Tray Internal Components- - - - - - - - - - 529 Table 8-10. 7-bin Tabletop Mailbox Internal Components - - - - - - - - - - 533 Table 8-11. 8-bin Mailbox Components (1 of 3) - - - - - - - - - - - - - - - 537 Table 8-12. 8-bin Mailbox Components (2 of 3) - - - - - - - - - - - - - - - 539 Table 8-13. 8-bin Mailbox Components (3 of 3) - - - - - - - - - - - - - - - 541 Table 8-14. Stapler Internal Components - - - - - - - - - - - - - - - - - - 543 Table 8-15. Alphabetical Parts List - - - - - - - - - - - - - - - - - - - - - 544 Table 8-16. Numerical Parts List - - - - - - - - - - - - - - - - - - - - - - 555

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Product Information

Chapter Contents

Printer Features - - - - - - - - - - - - - - - - - - - - - - 2 Paper Capacities and Sizes - - - - - - - - - - - - - - - - 4 Identification - - - - - - - - - - - - - - - - - - - - - - - - 6 Specifications - - - - - - - - - - - - - - - - - - - - - - - 7 Media Selection Guidelines - - - - - - - - - - - - - - - -11 Product Overview - - - - - - - - - - - - - - - - - - - - -14 Service Approach - - - - - - - - - - - - - - - - - - - - -28 Technical Assistance- - - - - - - - - - - - - - - - - - - -31 Warranty- - - - - - - - - - - - - - - - - - - - - - - - - -33 Regulatory Information- - - - - - - - - - - - - - - - - - -35 Declaration of Conformity - - - - - - - - - - - - - - - - -40

C4085-91087 Chapter Contents 1

Printer Features

T able 1-1. Common features between the HP LaserJet 8000, HP LaserJet 8000 N, HP LaserJet 8000 DN, and HP Mopier 240

Feature Description

Print Speed 24 ppm letter or A4

13 ppm ledger (11 x 17) or A3 15 ppm legal or B4

Duplex Speed 9.5 ppm letter or A4

6.5 ppm ledger or A3

7.5 ppm legal or B4

Text & Graphics Resolution FastRes 1200 provides 1200 dpi quality at full speed

plus Resolution Enhancement technology (REt)

Standard Printer Languages: Enhanced PCL 6

PCL 5e for compatibility Postscript

Duty Cycle (Monthly Usage) Up to 130,000 images

™

Level 2 emulation

Internal Typefaces 45 PCL, 35 PostScript

Cartridge Slots None

Power Control power save mode

Control Panel 6 Keys, LCD Display

(2-line, 16 characters per line)

EconoMode (toner saving)

Yes

2 Chapter 1 Product Information C4085-91087

+ 580 hidden pages