HP Color LaserJet 2550n printer + HP Color Training and extended warranty ;U4929E, Next-Day exhange... "ight flashing" Questions

...been helpful, please rate it. Thanks! m black toner ight is flashing and i have changed 3 deferent cartridges but light still flashes. what is the solution to get rid off the blak toner light

All the lights on my HP 1350 printer are blinking and it will not print. Normally where you could put the number of copies i " E" is in thaat spot. All the lights on my HP 1350 printer are blinking ...

...ight is flashing and the printer wont do anything, Hello, Unfortunately with the X75, a ?flashing? Status LED indicates one of two conditions: The unit is out of paper (or thinks that it is out of ...