HP Color LaserJet 4550, N, DN Printers
Service Manual

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


1 Printer description
Printer features
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
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
Basic operation
Image formation
Toner density
Mechanical system
Paper path
DC controller subsystem
Motors and fans
Formatter system
Power supplies

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

7 Troubleshooting
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

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

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

  Lloyd Robinson 2016-01-21 23:35:21  
  Could you please add reset for printers for the last Canon cartridges like PG545 and CL546, please? We have about 100 printers with full waste ink counter. Thank you.
  Anonymous 2020-07-06 18:43:29  
  Well...that was scary...I did a check on you and you are trusted so I over road the security settings of my apple mac. And now ...for FREE...my ink pad issues are over for the time being. THANKYOU.
  angga sri 2006-11-28 06:47:39  
  be epson maniac. because epson is the best. and all my product always use epson. Thank you!
  Debora Debora 2015-08-13 21:12:25  
  Amazed that it worked.
It took a few runs on a printer that had been clogged for over a year and finally, perfect nozzle check. Still won\'t quite unclog another machine, but well worth $30.
  Billy Binns 2010-10-10 17:03:27  
  Great product, once I had the key the problem was sorted in less than 5 minutes Thank you, Billy @ PISIFI
  hüseyin tüzün 2010-12-28 15:00:21  
  Thank you, got it on-line!
  Schaun Smuts 2015-10-23 11:16:13  
  I was amazed how easy that was. I was in doubt that this simple download would work... with my heart racing!

I entered the key,and there it was, all fixed.

2manuals, I must say, what you said it would do, it did, and I\'m so relieved and happy, and can work again.

The success of this has made me want to write a review on your product right away.

Thank you so much

Robert Dorsey President/CEO Cabin Watch Fine Time Wear
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