LaserJet 8000, 8000 N, 8000 DN
Service Manual

LaserJet 8000, 8000 N, 8000 DN<br> Service Manual
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LaserJet 8000 Printer Service Manual

This manual contains the necessary information to service the HP LaserJet 8000 Printer


1 Printer Description
Printer Features
Paper Capacities and Sizes
Model and Serial Numbers
Media Selection Guidelines
Adhesive Labels
Storing Print Media
Shipping Print Media
Product Overview
External View of HP LaserJet 8000/N/DN Engine
External View of HP Mopier 240
Formatter Assemblies
Accessories and Options
Ordering Information
Hard Disk
Determining Memory Requirements
Service Approach
Ordering Parts
Exchange Program
Toner Cartridge Life
Refilled Toner Cartridges & Non-HP Staple Cartridges
Recycling Toner Cartridges
Technical Assistance
HP FIRST (Fax Information Retrieval Support
World Wide Web
HP Reseller Sales and Service Support Line
Other Areas
Regulatory Information
FCC Regulations
Environmental Product Stewardship
Protecting the Environment
viii C4085-91087
Material Safety Data Sheet
Environmental Conformity
Declaration of Conformity
Safety Statements
Laser Safety Statement
Canadian DOC Regulations
VCCI Statement (Japan)
Korean EMI statement
Laser Statement for Finland

2 Site Requirements
Operating Environment
Space Requirements
Environmental Requirements

3 Operating Overview
Using the Control Panel
Control Panel Layout
Indicator Lights
Settings and Defaults
Printer Driver Information
Paper Source Default
Resetting the Printer
Setting the Display Language
Control Panel Menus
Information Menu
Paper Handling Menu
Print Quality Menu
Printing Menu
Configuration Menu
I/O Menu
EIO Menu
Resets Menu
Service Mode
Setting Page Count, Maintenance Count and Serial Number
Setting the Cold Reset Default Paper Size
Testing the Printer
Paper Path Test
Configuration Page

4 Maintenance and Adjustments
Cleaning the Printer and Accessories
Cleaning Spilled Toner
Preventative Maintenance
Tray Adjustment Procedure
Tray 4 (2000-sheet Input Tray) Adjustment Procedure

5 Functional Overview
Printer Functional Block Diagram
Power Distribution System
AC Power Distribution
Overcurrent/Overvoltage Protection
High Voltage Power Distribution
Formatter System
DC Controller System
Laser and Scanner Drive
Paper Motion Monitoring and Control
Engine Test Microswitch
Image Formation System
Toner Cartridge
Drum Cleaning
Drum Conditioning
Image Writing
Image Developing
Image Transferring and Media Separation
Image Fusing
Paper Paths and Components
Printer, Duplexer, and Envelope Feeder
Paper Size Switches (Trays 2 and 3)
Printing from Tray 1
Printing from Trays 2 and 3
Printing from the Envelope Feeder
Printing with the Duplexer
Printing from the Custom Height and Size Paper Tray
2000-sheet Input Tray (Tray 4) Components
2000-Sheet Input Tray Operation
2 x 500-sheet Input Tray
2 x 500-sheet Input Tray Operation
7-bin Tabletop Mailbox Components
7-bin Tabletop Mailbox Operation
8-bin Mailbox Components
8-bin Mailbox Operation
Finisher Components
Stapler Unit Operation
Main Functional Cycles of the Stapler
(Internal Paper Path)
Communication Link (Daisy Chain)
Paper Jam Detection
Printer Timing
IEEE 1284 Parallel Cable Information

6 Removal and Replacement
Removal and Replacement Strategy
Required Tools
User Installable Accessories
Hardware Table
Engine Removal and Replacement
Control Panel
Delivery Unit (for Standard Output Bin)
Diverter Assembly
Diverter Door Assembly
Lower Right Door Assembly
Fan 1, Laser/Scanner and Housing (Exhaust)
Fan 2, Low Voltage Power Supply (Exhaust)
Fan 3, Formatter Fan and Housing (Intake)
Fan 4, Delivery Unit (Exhaust)
Tray 1
Tray 1 Pickup Assembly
Feeder Assembly
Formatter Assembly
Fusing Assembly
Laser/Scanner Assembly
Main Gear Assembly
Main Motor Assembly
Paper Input Unit (PIU)
PCA, DC Controller
Output Paper Sensor PCA
High Voltage Power Supply (HVPS)
Low Voltage Power Supply (LVPS)
Registration Assembly
Tray 1 Feed Roller and Separation Pad
Tray 2 and 3 Pickup, Feed, and Separation Rollers
Paper Input Unit Sensor (PS2)
Registration Sensor (PS1)
Face-up Solenoid Assembly (SL3)
Transfer Roller Assembly
Tray 2 and 3 Assemblies
2000-sheet Input Tray Removal and Replacement
Front Cover
Back Cover
Left Cover
Right Cover
Main Drive Assembly
Paper Tray
Main Cable Harness
Controller PCA
Front LED PCA Assembly
Pickup Assembly
Power Supply
Pickup, Feed, and Separation Rollers
Paper Quantity Switch Assembly
Paper Size Switch Assembly
Vertical Transfer Unit (VTU)
Tension Springs
Locating Pins
Casters and Stabilizing Feet
Adjustable Foot
2 x 500-sheet Input Tray Removal and Replacement
Orientation of the 2 x 500-sheet Input Tray
Back Cover
Left Cover
Vertical Transfer Unit (VTU)
Right Cover
Front Top Cover
Trays 4 and 5
Pickup Assembly
Paper Deck Drive Assembly
Pickup, Feed, and Separation Rollers
Controller PCA
Tray-Size Sensing PCA
Power Supply
Main Cable
Storage Paper Tray
Front Door (Storage Area)
Foot Tip and Adjustable Foot Tip (Stabilizing Feet)
Locating Pins
7-bin Tabletop Mailbox Removal and Replacement
Orientation of the 7-bin Tabletop Mailbox
Front Cover
Back Cover
Top Cover
Controller PCA
Power Supply
Right Door Assembly (Paper Path Cover)
Face-down Bins
Empty Bin Sensor PCA
Full Bin and Interlock Sensor PCA
Face-up Sensors PCA
Reversing Mechanism Motor
Face-up/Diverter Assembly (Flipper)
Short Tray 7
Solenoid Reversing Mechanism
Flipper Solenoid
Latching Mechanism
Cover Latch
8-bin Mailbox Removal and Replacement
Front and Back Covers
Top Cover
Power Supply
Paper Bins and Blind Cover
Flipper Assembly
Delivery Head Motor
Transport Belt Motor
Input Paper Guide
Metal Tape and Housing Assembly
Controller PCA
Anticurl Strings
Delivery Head Assembly
Interlock Switch
Diagnostic LED PCA
User Status LED PCA
Adjustable and Fixed Casters
Attachment Assembly
Stapler Assembly Removal and Replacement
Mailbox with Stapler, Stapler Removal or Installation
Back Plate
Stapler Controller PCA
Top Cover Assembly
Stapler Bed Assembly

7 Troubleshooting
Troubleshooting Process
Printer and Paper-Handling Troubleshooting Process
Troubleshooting the Printing System
Preliminary Operating Checks
General Troubleshooting Information
Miscellaneous Problems and Solutions
Paper Curl
Power On
Engine Test
Event Log
General Paper Path Troubleshooting
Paper Jams
Paper Path Test
Printer Messages
Control Panel Messages and Errors
Printer Message Tables
Self - Diagnostics on Paper-handling Devices
2000-sheet Input Tray Stand-alone Diagnostics
2 x 500-sheet Input Tray Standalone Diagnostics
7-bin Tabletop Mailbox Standalone Diagnostics
8-bin Mailbox Stand-alone Diagnostics
Information Pages
Menu Map
Configuration Page
Interface Troubleshooting
Image Quality
Check the Toner Cartridge
Image Quality Tables
Repetitive Defect Ruler
Image System Troubleshooting
High-Voltage Power Supply Check
Network Troubleshooting
Verify Host System Operation
Verify Network and Server Operation

8 Parts and Diagrams
How to Use the Part Lists and Diagrams
Ordering Parts
Accessories and Supplies
Common Hardware
Illustrations and Parts Lists
Printer and Paper-Handling Components
Printer Parts and Diagrams
Paper-Handling Devices Parts and Diagrams
Input Devices
Output Devices
Alphabetical Parts List
Numerical Parts List

FORMAT: High resolution PDF document!
ZIP archive: 24 353 kB

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We are in business since 2002 and do our best to give our customers perfect service!

  eugen niculescu 2006-05-24 21:19:42  
  Worked perfectly! Thanks!
  Daniel Nove 2010-11-11 09:33:24  
  Excellent. Very well invested 10$ CX9300F , worked like a charm. Thanks guys
  Robin Griffiths 2012-11-22 08:48:30  
  BRILLIANT My Epson T11 stopped working with the ominous 2 lights flashing so I knew it was trouble and yes teh dreaded message came up about internal parts reaching the end of their servicabel life take it to (an expensive) service. Oh dear - A Google search brought up all sorts of so called download links for free re-set software but all of them didn't download the software but kept taking me to weird web sites. I was in despair of finding somethign that worked then came across I thought at first oh dear theres a cost involved. However I though well if it does work it will be worth it. Downloaded the software, plus updates, ordered the re-set key and hey presto a few seconds later the printer was up and going again. It was was every penny of the cost. Dont waste time trying to find so-called free solutions - total waste of time and so frustrating. Pay out for this and save the time and frustration AND it works! No fuss, no messign about no time wasting getting to dubious web site. A big THANK YOU I can highlym unreservedly reccomend this compnay for sorted out knotty printer problems
  Liz Hunter 2022-07-12 09:02:03  
  Thank you so much. You have helped me twice now. Once 2 yrs ago and just today, with the reset key to get my printer going again and I am so happy as I love my printer and it works perfectly and doesn't need to go to landfill. I have emptied the waste ink pads twice now, washed and dried so they will be the next thing I replace soon.
  Kenneth Astrop 2008-09-29 20:37:22  
  This is just what I need!
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Service Manual