DC252 Premature Drum failures

[adeyemi]

Please can anyone tell me why the colour drums on my DC252 are consistently failing before timing out. They fail when they are still at very high percentages like 80%, even 90%, i.e only 10-20 % usage!! This has happened for several sets of the colour drums. Black is ok.

[kalindd]

May be the cleaning system is not working, the motor that cleans the corotron is used also to push a black plastic rod, that pushes the cleaning system.

[adeyemi]

Thanks Kalindd, you have a very good point on this, i didn't think of it...i'll check it up, thanks.

[davidj7]

i am having similar problems with the same drum but in DC5000. i get lines in process direction after 1000k. the lines appear on the charging rod and moves to the drum.The drum unit goes in 5k