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!

  Paul Jumbo 2019-04-19 18:47:57  
  I had Epson WF-2650 and it wasn't printing fully, skipping lines, even though colors were full.
I did a lot of cleaning, head cleaning, put new cartridge but no luck. I did some head cleaning using glass cleaner and syringes as shown on various youtube video.
After that, my printer didn't recognize two of the cartridges. I tried everything, cleaning contacts etc, nothing worked.

I was finally going to buy new cartridges however stores were closed today so I decided to look for chip-resetting tool but nothing good was available locally.

I came across this WIC reset utility and was really skeptical if it will work. I took the chance, bought the key, used the tool to reset firmware to chipless firmware, it was successful at the first go.
At this point, printer showed all ink levels 100%. I printed a test page and it came out perfect.
To make it even more interesting for me, I live in Europe and during one of the trip, I bought two sets of XL cartridges for this same model but printer didn't recognize in the past and I was going to throw them since these were no good for my EU model. I tried these again after chip reset firmware and voila, they works too.

I am amazed at the propaganda of these printer manufactures that even original printer cartridges from US didn't work on the model here in EUROPE, these used to fit perfectly but printer wouldn't recognize however, now they works too.
Today, I was almost ready to trash my 2.5 yr old and not much used printer but after a lot of trying and finally using WIC reset utility, the printers works like new and saved me a lot!

These were the best 20 CHF/USD I spent today!
Thank you very much and I don't need to worry about relying on a hardware chip-reset tool. I will now be able to use US model cartridges and re-fill i like without having to worry. I even printed some photos using this same printer on photo paper today and printer did an excellent job.
  Giorgos Zaxarias 2006-09-26 00:32:15  
  It\'s ok! thank you......................................
  mohammed kateeb 2006-01-02 01:34:43  
  hi.........i want to thank u for ur website coz it has vry easy to download the file as will as directly download shortly ...gooooooooood luk
  jay agu 2025-06-30 01:39:37  
  This is your sign that this is legitimate. Easy process and worked exactly as described.
  Len Foster 2011-11-27 16:38:24  
  Brilliant stuff! Have tried everything over the last few days to reset my R265, and finally found your site! Brought a key, bit of a problem with my email account, tried another one, got the key, reset the R265 AFTER washing out the inkpads, now everything is working as it should. Many thanks.
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