Question about HP LaserJet 2550Ln Printer

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2550Ln printing dots of colour thoughout the middle line of the sheet

HP 2550Ln is printing a dot of each colour in a linear format thoughout the centre line of the page.  It doesn't matter what computer I use or what application.
Any suggestions?

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Re: 2550Ln printing dots of colour thoughout the middle...

The drum has a nick in it and needs to be replaced.

Posted on Apr 02, 2008

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Hi i am not able to print in color, even though my settings are to print in color and the cartridge is nearly full. I have an all in one printer HP FA2480

Pls reset your printer.

1.Switch the Printer ON by pressing the Power Button (Make Sure Paper is not Loaded)

2.Once switched on, hold down the Power Button (DO NOT RELEASE)

3. Now press the Cancel Button and let go of it

4. Now Release the Power Button

5. Wait...

6.The INK LED will light up,

7. After a while it will attempt to print a sheet but because there is no paper the resume button will blink
Now press cancel

You have completed the steps and now should be able to print if not attempt this again from STEPS 1-7

Feb 09, 2011 | HP DeskJet F4280 All In One Printer InkJet

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Hi, my HP2600N colour laser jet leaves two 1cm wide coloured smudge lines length ways on all my A4 prints. The printer is getting to about 2 years old now so i'm fearing that some major part needs...

Dots, Lines and smudges on the printouts are due to deteriorating cartridges and cleaning the green drum of the cartridge may help temporarily. Take out the cartridge and gently clean the roller/ green drum with a dry, soft, lint-free cloth wiping off the toner dots marks/ lines.
Also, make sure that the visible inside of the printer is clean and there is no spilled toner inside, which sometimes results in dots.
Moreover, streaks (thicker lines) and dots etc indicate faulty PCR Roller which is located behind the green drum inside the cartridge. Replace the Cartridge or get the PCR Roller changed by a professional.
Rest assure that the printer is fine and needs no major replacement.

Hope it helps! Good Luck!
Don't forget to convey your feedback

Jan 22, 2011 | HP Color LaserJet 2600n Printer

1 Answer

I am getting a dotted line when I print on my hp 4700 laserjet

that dotted line is produced by one of you toner cartridges,put attention to what color the dots are and replace the cartridge.
also there is an option in the menu to disable the cartridge check ,do that under "diagnostics menu" and start taking 3 cartridges the first time and print something,check if dots are present,if not put another cartridge print something and check ,repeat process until you find the defective one.

Sep 14, 2009 | HP Printers & Copiers

1 Answer

When printing the sheet of paper has 3 dots on the

Yes this could be the drum.

You could remove the drum and carefully look for the pattern of dots etc that you are getting on the page but on the drum surface.

I would suggest replacing the drum 1st and retrying.

If the black lines are just down one edge then the fuser could be to blame for the black marks but without being able to see the page i cant tell. The drum is certainly my 1st suspect and is easy for you to try.

If you are in Berkshire try for additional help

Aug 24, 2009 | HP LaserJet 2840 All-In-One Printer

1 Answer

11 blue dots print out down the left hand side of documents

It's probably the toner cartridge again. See if you can spot defects at the cyan drum unit that matches the marks on your printout.

Apr 14, 2009 | HP LaserJet 4600dn Color Printer

1 Answer

Hp2600n printing black dots centre page

Could be a dirty fuser, try a laser printer cleaning sheet.

This is more of a problem if you use (some types of) remanufactured toner cartridges.

Feb 04, 2009 | HP Color LaserJet 2600n Printer

1 Answer

Printer prints a colour dot at every pages edges

Hi ,
if u get red dots on print it may be problem with Red cartridge Lick age please check u r printer with Ok cartridge .if same problem with new cartridge then u need to clean Mirror built in lance assembly

Jul 11, 2008 | HP LaserJet 3800dn Printer

1 Answer

Epson 9800 Prints black dotted vertical line

This is a workaround - I too need a definitive answer. Symptom: black dotted vertical line 1/2 to 3/4" from leftmost image edge. I have begun adding single vertical line to my prints .25" from the left edge of the paper to force the "dots" off my print - this seems to have the desired affect, but it does not answer the cause or provide a true remedy (it will save many of your prints while we wait for complete solution). dkh

Apr 18, 2008 | Epson Stylus Pro 9800 InkJet Printer

1 Answer

Printing problem with Star Sp200

Seems like a problem with the printer head...It is usual for matrix printers and it happens due to wear and tear..You will have to get the printing head to get replaced..

Oct 27, 2007 | Star Micronics SP 2000 Matrix Printer

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