Has anyone seen the problem on these machines? normal text is fine but if you run a skyshot or test mode half tone print you can see white blotches all over.
KM tech just say replace black unit and this does cure it but these are occuring quite often and at around 100k so looking for a solution.
I didn't get it. Did you replaced the black IU and the problem remains or are you trying to find a solution before replacing the imaging unit?
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Reset your Imaging units for Bizhub and CF series.
C350/C351/C450/C451/C550/C650
CF1501/CF2001/CF2002/CF3102 http://www.chipreset.eu
if you change the unit it goes away. but this is happening on so many machines we need to find a resolution rather than keep changing units as they should last 300k not 100k
the problem usually has to do with humidity in the enviorment.or lack there of. try reducing the background voltage and transfer voltages and increasing dmax value and tcr values. saw this problem alot in the 8020/8031 line. there is also a bias choise setting but you will loose the gradation adjustmet.
There seems to have been a bad batch of toner shipped out. We have been told to replace the toners with new ones and that has sorted out the problem as soon as the old toner has been worked out of the dev tank.
If you detect this early enough it doesn't take long for the blotches to dissapear.
shipped out. We have been told to replace the toners with new ones and that has sorted out the problem as soon as the old toner has been worked out of the dev tank.
Linear Mode
