HP Color LaserJet 4550, N, DN Printers
Service Manual

$9.99
HP Color LaserJet 4550, N, DN Printers <br> Service Manual
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HP Color LaserJet 4550, N, DN Printers Service Manual

This manual contains the necessary information to service the Color LaserJet 4550, N, DN Printers

Contents:

1 Printer description
Printer features
Identification
Site requirements
Printer specifications
Printer assemblies
Media requirements
Environmental Product Stewardship Program
Regulatory statements
Safety information

2 Service approach
Service approach
Parts and supplies
Warranty statement

3 Installation and configuration
Unpack the printer
Installation
Connecting to a network
Enhanced I/O (EIO) configuration
Printer drivers
Network configuration
Configuration tips
Setting network security on the printer

4 Printer maintenance
Cleaning the printer and accessories
Approximate replacement intervals for consumable items
Locating consumables
Replacing consumable items
DIMM configuration

5 Theory of operation
Introduction
Basic operation
Image formation
Toner density
Mechanical system
Paper path
DC controller subsystem
Motors and fans
Formatter system
Power supplies

6 Removal and replacement
Introduction
Consumable assemblies
Covers, drawers, and top and front assemblies
Right side assemblies
Left side assemblies
Rear assemblies
Internal assemblies

7 Troubleshooting
Introduction
Troubleshooting process
Printer error troubleshooting
Paper path troubleshooting
Image formation troubleshooting
HP ColorSmart II
Matching colors
Four-color printing (CMYK)
Image defects
Overhead transparency defects
Repetitive defects troubleshooting
Interface troubleshooting
Control panel troubleshooting
Troubleshooting tools
Service mode
Diagnostics mode
Diagrams

8 Parts and diagrams
Introduction
Ordering parts
Illustrations and parts lists
Alphabetical parts list
Numerical parts list .

FORMAT: PDF
ZIP archive: 56 618 kB

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

  Andy McAtear 2024-12-07 11:27:42  
  This little app is a life saver. Got up at 6 am this morning as I needed to print out some important documents for later today, only to find that all the lights were flashing on my printer. A quick search on the web pointed me to this site and the app informed me that my ink pad was full. A few clicks later and my printer is like new again. Many thanks.
  Krzysztof Luczak 2016-07-25 04:01:38  
  And after proceeding the counter reset my Epson printer works fine! So thank you very much for your very good service. Many greetings from Germany
  Omar Tamimi 2023-09-18 19:50:57  
  It actually worked for me, the printer is working and ready to go! Cheers from Palestine!
  Bonnie Richard 2025-04-20 10:32:28  
  Thank you so much. Purchased key followed instructions for reset everything working fine except cannot get ink flowing. Have used cleaner twice, nozzel clean, purge, still not working. Any suggestions? ET-2760
  Jeff Schapel 2018-07-14 09:54:57  
  I just used this utility on an Epson XP 810. Worked like magic. First the trial version,this brought my printer back to life immediately. Then i bought the reset key, and according to the program, the waste counter is now set to zero. I replaced the inkpads with thightly packed adsorbent paper, so for less than ten dollars I have a fully working printer /scanner/copier again. Thanks! Chris
  Steven Wray 2010-11-17 22:40:14  
  Wow thanks guys,this R265 has been in my cupboard for over a year because I couldn\'t find a reset Programme. I\'m absolutely astounded that it works and how easy it was. MANY THANKS.
  Catherine Jenson 2020-04-18 17:04:10  
  Thank you very much for the free trial. I really appreciate it. God Bless and more power!
  Peter Eichberg 2011-10-24 01:36:03  
  I just bought the Epson Artisan 800 ink pad resetting software and it did the trick and totally reset the ink pad counter just like advertised. However, I must give anyone who uses the software a piece of advice. The product will not work wirelessly. You MUST connect your printer via the printer's USB connection. The printed material that comes with the download does not mention this. I had to play around with the printer before I realized there had to be a USB connection. Once I figured this out it was a snap to get the printer to reset and the error I was getting has now stopped appearing! I could not be happier with my purchase and I must admit I was a skeptic when I first bought the download. You guys are terrific and I will never fail to but again from 2Manuals.com. Peter
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