HP Color LaserJet 2840

How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

Check the ink levels and replace the color ink cartridge if it is low/empty. Check if the color ink light is blinking on the printer. The ink cartridges that come with the printer are setup ink cartridges that are required to initialize the printer. During initialization, a large quantity of ink is used.
If your printouts have incorrect colors, try these solutions: Make sure the paper type setting matches the paper you loaded. Make sure the Black/Grayscale or Grayscale setting is not selected in your printer software. Run a nozzle check to see if any of the print head nozzles are clogged.
Here are the most common causes of a printer printing faded text or images: Low ink or toner levels. Toner sticking to the fuser roller or problems with the transfer roller. Low ink or toner density settings.
If your PC or the LCD screen on your printer is telling you that your ink cartridges are full but no ink is passing through to the paper, then it`s most likely that you are dealing with a clogged printhead. Blurry documents and images that appear faded are also signs that it`s time to remove the excess ink.
After all, colors will pop more against a rich black than they will against gray. When you order full color print, we recommend using 80% cyan, 80% magenta, 80% yellow, and 95% black to ensure that your black appears as dark and rich as possible.
Color mixing can occur if tape has been replaced over the print cartridge nozzles or if the entire print cartridge is placed into a resealable plastic bag to keep the print cartridges from drying out.
Reasons why your HP printer has ink but won`t print

This may seem obvious, but it sometimes happens: first make sure your paper tray has paper in it. Misalignment, clogged printheads, faulty data communication or insufficient ink levels can also be sources of the problem.

Dirty or misaligned print heads

Your printer may be printing fuzzy, blurry, or other faint text because of dirty print heads. All modern printers have a self-cleaning mode, which cleans the print heads, and additional internal equipment used in the printing process.

Why is your printer printing pink? Your printer may be printing pink as the other ink cartridges have run out. Common printer-to-page technology processes colour in four parts; cyan, magenta, yellow and black (CMYK), or toner. The ink cartridges in your inkjet or colour laser printer are split up into four colours.
The reason may be quite simple – your cartridge is dry or clogged. Still, adding fresh ink may not resolve the situation. Try to wipe the cartridge with a lint-free cloth dampened with isopropyl alcohol. Please avoid touching the metal parts of these cartridges and the chip not to damage their electrical contacts.
Why is my printer printing yellow not red? It is most likely that your image is yellow where you were expecting it to be red and you may also notice that blue parts of the image appear turquoise instead. Both of these effects are caused by a lack of magenta ink/toner on your prints.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Color Laserjet 2840 spitting out blanks
ANSWER : Moe- You are the man!

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HP Color LaserJet 2840

HP LaserJet 2200D won't print configuration page
ANSWER : Find someone with a HP LaserJet 4100 and you can configure the card to the IP you want:

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HP Color LaserJet 2840

HP Laserjet 1320tn printing grey instead of black
ANSWER : Try this test. Put a page into the manual feeder and do that same test. When the end of the page is just about to enter the printer, open the lid. Take out the toner cartridge and pull back the shutter. Look at the image and see if it is black. The explanation is that there is high voltage going to both the toner cartridge and the charge transfer roller below it. If the image on the drum is black, then the fault is at the transfer roller not getting enough high voltage. The transfer roller pulls the image off of the drum and down onto the paper. It would not be a laser scanner problem as any issue with it would not result in an overall gray image, but combination of gray and black. It will probably turn out to be a bad HV power supply, which will need replacement. I’ve never seen this particular problem on this model.

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HP Color LaserJet 2840

HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

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HP Color LaserJet 2840

HP 2840 All-in-one ,image drum counter reset
ANSWER : Hi, My HP 2840 is showing replace supplies on all but black , to print color all I have to do is send print command before the printer shows ready and it will print full color , also the windows test print works at any time ? It’s a pain but it works !

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HP Color LaserJet 2840

HP 2840 displays: "59.4 error – please turn off/on again" when trying to print/copy pages.
ANSWER : Fuser errors are 50.XX 59.4 is the fuser motor. http://www.fixyourownprinter.com/posts/67008

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HP Color LaserJet 2840

How to copy a card slot in HP laserjet 4250N
ANSWER : None that I know of, using a computer is likely your best option but I never attempted it.

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HP Color LaserJet 2840

HP Laserjet M3035xs RFU Upgrade
ANSWER : There’s no way.

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HP Color LaserJet 2840