Color LaserJet 8500, 8550 Printers Family
Service Manual

$9.99
Color LaserJet 8500, 8550 Printers Family <br> Service Manual
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Color LaserJet 8500/8550 Printer Family Service Manual

This manual contains the necessary information to service the Color LaserJet 8500/8550
Printer Family Printers

Contents:

1 Product Information
Introduction
Printer features
Specifications
Site requirements
Media requirements
Identification (model and serial numbers)
Printer Information
Safety information

2 Service approach
Chapter contents
Introduction
Parts and supplies
Ordering
Technical assistance
Warranty

3 Operational overview
Chapter contents
Verifying package contents
Verifying the cables are installed
Connecting the printer to the network
Changing the printer control panel overlay
Printer control panel layout
Menu maps
Selecting the display language
Installing the consumables
Configuring input trays
Verifying the printer is installed correctly
Verifying DIMM installation
Duplex registration (HP Color LaserJet 8550)
Booklet printing
HP TonerGauge (HP Color LaserJet 8550)

4 Printer maintenance
Chapter contents
Cleaning procedures
Printer consumables

5 Theory of operation
Chapter contents
Introduction
Color theory
Image formation
Consumable detection mechanisms
Electrical systems
Mechanical systems
Paper path
Printer timing
EPH controller board
Duplexer
2,000-sheet input unit
Multi-bin mailbox
3,000-sheet stapler/stacker

6 Removal and replacement
Chapter contents
Introduction
Maintenance units
Doors and covers
Top assemblies
Front assemblies
Left assemblies
Right assemblies
Rear assemblies
2,000-sheet input unit
Multi-bin mailbox
3,000-sheet stapler/stacker and 3,000-sheet stacker

7 Troubleshooting
Chapter contents
Pre-troubleshooting checklist
Printer message troubleshooting
Aids to troubleshooting
Paper path troubleshooting
Image formation troubleshooting
Image defects troubleshooting
Color balance adjustment
Repetitive defects troubleshooting
Repetitive defects troubleshooting
2,000-sheet input unit troubleshooting
Multi-bin mailbox troubleshooting
3,000-sheet stapler/stacker troubleshooting
Communications troubleshooting
Diagrams

8 Parts and diagrams
Chapter contents
Overview
Ordering parts
Illustrations and parts lists
Numerical parts list
Alphabetical parts list
Index

FORMAT: High resolution PDF document
ZIP archive: 135 497 kB

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

  jim stewart 2007-10-19 17:28:10  
  I spent 4 hours trying to get my r340 to work then l I used your program to reset the protection counter. I have just printed 5 pages and 4 disks. Slightly cryptic instructions but it worked perfectly. it took me all of 5 minutes.
  yimer tellez 2011-05-17 23:10:05  
  nesecito la clave para resetear la epson stylus tx 600fw por favor colaborenme gracias por su atencion prestada
  Alexey Scherbenko 2020-01-15 16:42:26  
  HELLO!!! Today I bought a key for updating the firmware of my SC P-600 printer. After activ ating the key, WIC started updating the firmware and the message "ROM is not writeable" popped up on the printer screen. Now when I power on printer - I get "Recovery mode". What can I do now?!

======Answer========

Please read how easily and quickly it can be solved -
www.wic.support/epson-wf-3720-stuck-in-recovery-mode-quick-and-esy-solution/
  Michael Eckenberger 2020-07-01 13:43:36  
  This was super helpful, thank you! I used the trial key this time to be sure it worked, but will be more than happy to purchase the service when I need it next :)
  kin thil 2007-02-08 19:44:43  
  I have reset the waste ink in my epson R230 printer. Worked fine
  Rick Benavides 2011-06-07 22:14:16  
  Thanks John, You saved me alot of time and frustration dealing with that idiot I was talking with at Ebson, he didn't know sh$t about my printer, he began by telling me that my printer was like a human body and I was like WTF???, well anyway I eventually told him he was stupid and hung up on him, I called the place where I purchased my printer from and he gave me your website, everything is working fine now and you saved me from any down time I would have had taking to the service center!...thank you again!
  R. Zeiss 2021-04-24 03:18:01  
  It worked on my MX892 !!! Thank you. It reset the Ink Absorber Counter, and my printer was alive again.
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