Mpc5501 drums coated

[mrfuser]

[slimslob]

Re: Mpc5501 drums coated

Sounds more like the drums need to be replaced.

[mrfuser]

Re: Mpc5501 drums coated

Did that three times and same result

[mrfuser]

Re: Mpc5501 drums coated

Even if we choose single color cyan or yellow we get magenta all over the page. Black and white is fine

[slimslob]

Re: Mpc5501 drums coated

The transfer rollers for all 3 colors are raised together therefore during B/W the ITB belt is not in contact with any color drum.

[tjvincent]

Re: Mpc5501 drums coated

I would try a transfer belt unit.

[mrfuser]

Re: Mpc5501 drums coated

Ok tried different transfer belt. Same result , magenta drum getting coated . Could it be a bad high voltage power supply?

[tjvincent]

Re: Mpc5501 drums coated

Did you just replace the belt or the whole unit ?

[mrfuser]

Re: Mpc5501 drums coated

Entire unit replaced

[slimslob]

Re: Mpc5501 drums coated

I would check the ground contact for both the drum and the and development units. If there is developer in the coating on the drum, you will also need to replace the developer.

[xcopytech]

Re: Mpc5501 drums coated

If you have solid magenta background then you do not have charge on magenta drum.
Check primary corona voltage and hvps.