HP Color LaserJet 2600N

How to Identify and Fix Common Problems ?

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

Streaking is usually caused by a worn out drum unit or spent toner cartridge. Drum units are a consumable and only need to be replaced after the use of 3 or 4 toners. Not all printers use a separate toner and drum unit.
The streaks or lines might be caused due to low ink levels in one or both ink cartridges. Check the ink levels using the HP Toolbox to determine if the ink cartridges are low on ink and need to be replaced.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
A cartridge may be running out of ink even if the graphic shows ink remaining (see the note at the start of this section). Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink.
Streaks and unwanted lines could mean that the printer heads are out of alignment. There`s an alignment tool in the printer`s control panel. If that`s not the issue then the printer is dirty. Printer ink stripes may appear along the edges of the paper, which means there`s ink on the rollers and other parts.
Dirt, dust, or toner accumulated on the rollers or transfer belt can cause smears and smudges on the paper as it goes through the paper. Cleaning your printer, especially its rollers, is one of the possible solutions to fix black marks on paper.
A printing defect characterized by elongated blotches of ink in non-image areas, commonly caused by mechanical problems with the press, such as damaged rollers (in lithography), or by improper wiping of a gravure cylinder by the doctor blade (due to dried ink fragments attached to it, or other such problems).
If your laser printer is causing horizontal black lines you either have a problem with the optics or the drum. Cleaning the optics and replacing the drum should fix the problem in most cases.
Vertical Streaks or Lines

Swapping out the cartridge for another should help you rule it out as the culprit. Vertical white lines also can signal an obstruction that prevents the laser from imaging pages correctly. Resolving that problem can require cleaning elements of the laser assembly or replacing it altogether.

Dirt, dust, or toner accumulated on the rollers or transfer belt can cause smears and smudges on the paper as it goes through the paper. Cleaning your printer, especially its rollers, is one of the possible solutions to fix black marks on paper.
What`s happening is that the drum or rollers could have a fingerprint or dirt that is smudging the toner on the page as it passes through to the fuser. It is normally caused by the rollers. If the marks are always in different places, then it`s most likely to be the drum.
For cleaning, HP recommends using HP Equipment Cleaning Wipes, but you can use an HP-approved lint-free wipe and deionized or distilled water. Note: If dark spots appear on back side of prints, clean drum screen. Note: If minilab prints more than 2000 prints each day, clean drum screen up to twice daily.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Color Laserjet blank pages – only jetdirect page
ANSWER : What about the engine test? To do that, drop down the front tray. Feel around on the left side at the top and you’ll feel a little plastic dongle. If you lift up on that it will initiate an engine test page. That will be a page containing lines of each color.

Read Full Q/A … :

HP Color LaserJet 2600N

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.

Read Full Q/A … :

HP Color LaserJet 2600N

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:

Read Full Q/A … :

HP Color LaserJet 2600N

HP laserjet 3100 multiple page feed fixed!
ANSWER : Can you tell me what kit you are referring to because I have the exact problem with my 3100 printer?

Read Full Q/A … :

HP Color LaserJet 2600N

HP Color LaserJet 4550 Streaking
ANSWER : hello,

Read Full Q/A … :

HP Color LaserJet 2600N

HP LJ 1150 Printing multiple pages on one sheet?
ANSWER : Hey friends.

Read Full Q/A … :

HP Color LaserJet 2600N

HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

Read Full Q/A … :

HP Color LaserJet 2600N

HP Laserjet 4000 Printing Blank Pages
ANSWER : Would just like to say thank you to every one. I am a teacher and need my printer for a ridiculous amount of paper work that keeps me away from working with students. My printer was down for 5 school days. I finally got the new toner and it still didn’t print. After following your meticulous instructions I was able to get it working. Thank you Thank you Thank you to all people who contributed to this.

Read Full Q/A … :

HP Color LaserJet 2600N