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!

  Anonymous 2020-02-27 17:38:46  
  I have had this Epson SX200 for more than 10 years, it has been reset on service twice, but now I decided to do it myself. First I used a trial version and then bought a key. My Epson is like new again. Thank you !!
  tony dean 2010-02-20 15:13:27  
  i downloaded epson r285 adjustment program!
  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
  pintusorn chatnarongchai 2015-01-16 19:50:03  
  John, On your word and based on testimonials I purchased they reset key. Worked perfect up until this point and even ran it through multiple head cleanings. Artisan 710 running again and saved a lot of money. Thanks.
  hamacher rainer 2015-09-26 00:51:30  
  Today my Epson printer stopped working. I have the tool they provide to reset the ink pad counter but it simply reports network error after network error trying to connect to the Epson server.
Since its Christmas eve and I need to print some gifts for my kids I was totally hooped until I found you guys. I just want to thank you for doing what Epson was unable to do. They suck, you rock!
Robert
  pierre commenge 2011-06-08 14:51:41  
  it does not work, can not recognize ink cartridges always displayed, Epson SX400 ========== REPLY ============== The WIC reset utility can reset Waste Ink Counters only. Not Ink cartrigs levels in SX400. You can use auto reset chps to reset the ink levels.
  Charles Breward 2025-07-11 12:44:59  
  Thank you for your service. The process was straight forward, thank you.
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