My color Jaser jet 2600n does not recognize the new yellow print cartridge. I have tried two and they are right out of the box

Check the yellow toner cartridge, printing a configuration page.

Configuration page
The Configuration page lists the current settings and properties of the printer. You can print a
Configuration page from the printer or HP Toolbox. To print the Configuration page from the printer,
complete the following steps.
1 Press the (LEFT ARROW) or the (RIGHT ARROW) buttons to select the Reports menu.
2 Press the button (SELECT).
3 Press the (LEFT ARROW) or the (RIGHT ARROW) buttons to select Config report.
4 Press the button (SELECT) to print the Configuration page.

Yellow print OK?
No? try print with another yellow toner cartridge (Q6002A).

The yellow toner cartridge is probably leaking. Try another.

If the lines are predominatly one color such as yellow or cyan then you likely have a bad cartridge. If you recently replaced a cartridge that is the one I would check first. You can also just look at the drum of each cartridge (the green roller under the shutter). If there is a problem it will usually show on the drum as well. Cartridges are the biggest issue with these printers, particularily the poor quality of cheap remanufactured cartridges coming from Asia.

This printer does not use ink cartridges. It is a laser printer and uses toner cartridges. Yes, one or all three toner color cartridges maybe running out of toner.

This is a common problem with this model of printer. The scanner optic degenration is due to dust buildup on mirrors and lenses. Since the most vulnerable mirror reflects its laser beam to the magenta toner cartridge, red tones are the first to show fading. Colours shift: purples turn blue and oranges turn yellow. The printer will need to be cleaned by a certified HP technician to resolve this issue as it means dismantling your printer to fix the problem.

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HP Color LaserJet 2600n Printer - Installing Print Cartridges When a print cartridge approaches the end of useful life, the control panel displays a message recommending that to order a replacement. The printer can continue to print using the current print cartridge until the control panel displays a message instructing to replace the cartridge. The printer uses four colors and has a different print cartridge for each color: black (K), cyan (C), magenta (M), and yellow (Y). Replace a print cartridge when the printer control panel displays one of the following messages: Replace yellow cartridge, Replace magenta cartridge, Replace cyan cartridge, Replace black cartridge. The control panel display also indicates the color that should be replaced (unless a genuine HP cartridge is not currently installed). Change the print cartridge

1. Turn off the printer.
2. Open the front door. CAUTION: Do not place anything on the transfer belt (ETB), which is located on the inside of the front door.
3. Remove the used print cartridge from the printer.
4. Remove the new print cartridge from the bag. Place the used print cartridge in the bag for recycling.
5. Grasp both sides of the print cartridge by the blue handles and distribute the toner by gently rocking the print cartridge from front to back. CAUTION: Do not touch the shutter or the surface of the roller.
6. Remove the orange shipping locks and the orange shipping tape from the new print cartridge. Discard the shipping tape and shipping locks according to local regulations.
7. Align the print cartridge with the tracks inside the printer, and using the handles, insert the print cartridge until it is firmly seated.
8. Firmly close the front door.
9. Turn on the printer. After a short time, the control panel should display Ready.
   NOTE: If a cartridge is in the wrong slot or is the wrong type for the printer, the control panel will display one of the following messages: Incorrect yellow, Incorrect magenta, Incorrect cyan, Incorrect black.
10. Installation is complete. Place the used print cartridge in the box in which the new cartridge arrived. See the enclosed recycling guide for recycling instructions.
11. If a non-HP print cartridge is in the printer, check the printer control panel for further instructions.
    NOTE: When replacing or changing a black print cartridge, a cleaning page will automatically print. This helps prevent speckles on the front or back of printed documents. A cleaning page can also be generated using the control panel or the HP Toolbox.

Hi,
Do calibration if this not help you need to buy new cartridge.
good luck.

Hi,

On the contrary, the 2600N does have a way to override. Press the check button and the right arrow button in this combination:
check, arrow, check, arrow, arrow, check, arrow, check, arrow, check, check.
This should bring you back to the ready screen after a brief pause. This will engage "Override Out". Repeat the check arrow steps in the same sequence to put it back to "Stop Out".

Jerry

i have priner hp laser jet 2600n but it is printing very low any pic if i print it is come very low color i changed toner cart but still same problem.

It's normally caused by dirty scanner mirrors, the machine will need to be dissembled, the laser scanner unit removed, taken apart and the mirrors cleaned. Unfortunately it is quite fiddly getting the scanner unit out, but this is a very common problem for the HP colour laserjet 2600's
If you want the service manual it can be downloaded from the following link free of charge http://www.eserviceinfo.com/equipment_mfg/HP_22.html