ak_infl,

If you unplug the printer from the wall and remove the power brick for 60 seconds, this will reset any error messages the printer has. I would then plug everything back in.

Power on the printer. 

Open the printer(with the power on) and take out the Dell Series 9 black cartridge and then reseat it. I would then take out the color Dell Series 9 ink cartridge and reseat it. Now close the printer and it will print an alignment page.

Any error messages?

black cartridge = black side(left side)          color cartridge = color side(right side)

photo cartridge = black side(left side)          color cartridge = color side(right side)

Dell Series 9 ink cartridges have a sensor in them that cannot be reset. Article on refilling Dell ink cartridges.

Dell Series 9 ink cartridges can be purchased at Staples, Walmart or Dell's Website.

It's possible to get a Dell Series 9 ink cartridge with a bad sensor. I would take these back to the place of purchase for a replacement.

Rick