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!

  John Briggs 2012-01-26 19:19:33  
  Worked straight out of the box and in a few minutes I was up and running again.
  Wolfgang Panter 2010-02-03 12:30:13  
  Thanks! Working now!
  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/
  Joseph Hare 2025-03-29 19:59:22  
  I replaced the waste ink tank and thought all was good until I received the dreadful message that ink pad was at the end of service life. I had previously downloaded the WIC program. I was skeptical, but figured I would give it a shot. I ordered a key, installed it, and had to play around a little bit, but finally got the all clear. Could not be happier. Highly, highly, highly recommend it.
  Tomas Jomad 2014-05-21 14:00:25  
  Just wanted to write and THANK YOU for making such GREAT products.

I just reset my Epson 1430 printer. I\'m using it with bulk pigmented ink...and a custom color profile. I love it...and thanks to you I\'ll be able to get several more years out of it.
Best regards.Tomas Jomad
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