Yellewo does not print

Sounds like a faulty toner cartridge. Are all the cartridges OEM?

Hello,
The Magenta or RED toner cartridge should be removed and double check that you have indeed removed the pull tab located on the side of the cartridge which will remove the sealing tape off the new toner cartridge.
The YELLOW toner cartridge on the other hand if it is not new then it is perhaps empty and needs to be replaced. Another option is to remove the YELLOW toner cartridge from the machine, Tap it and shake it side to side to loosen the toner that is in it, and replace it back into the machine, this will usually make it start to work again!
Good Luck!
Rich Lilja

check yellow cartridge to see if toner seal tab has been pulled out

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).

Try Try using the HP Print Diagnostic Utility in Windows - HP Customer Care (United States - English).

If you need more help come back.Post / thumbs / testimonial are welcome!

If its a yellow line change the yellow cartridge, If its Magenta change the magenta cart. you get the idea

Use only original ink cartriges, the non original has ink normaly is not for you printer, and you wast your money and damage the printer print-head

You can dab the bottom of the color cartridge on a damp paper towel, check the streaks left behind, if there is no yellow either there is no yellow in the cartridge or it's just plugged. Dab it a few times on a wet towel, if still no yellow, you need another cartridge.

All cartridges are new...report shows 0 pages for yellow left yet all others added at the same time show thousands of pages left. Everything printed is in black with no color. BTW: I have 3,000 pages left with black cartridge and the display says I need black.

What should I do?

Press Green Tick, Right, -> System Setup -> Right, Right, -> Print Quality, Right -> Replace Supplies. Change from stop at out, to override at out. It'll let you print, and you'll get loads more out of your toner before the pages start to fade.
Dan :-)