Replaced drums and now totally worthless prints

[VJ Slof]

Hi, i replaced 2 drums today in my DocuColor 240. Now this is the print quality. Overal spots over the entire page. Spots are in C M Y K. What could be wrong here? Never seen this before.
IMG_0630.jpg

[adriansto]

Something wrong with black developer unit. To be sure print some lines on black and white on A3 paper.

[VJ Slof]

Something wrong with black developer unit. To be sure print some lines on black and white on A3 paper.

Thanks but I changed the black developer now but problem still exists. The spots are in all colors. This print was a black and white test pattern on A4. The spots are seen on the transfer belt as well now. When i turn the belt by hand it cleans good.

[adriansto]

May be the new drums are bad. Put back the old ones and see if the error is still there.

[Detonation]

Yeah like Adrian said. The drums for the DC250 haven't been produced for a while now. If they've had a long shelf life in sub-optimal conditions they may be bad right out of the box.