c452 with shadow background

[juve]

288272882728827can someone give me an idea of what sort of problem I have in this c452 please?it is producing a shodow background as it can be seen in photo.any ideas.

[Max]

Maybe its my laptop screen but I cant see any shadows. What have u tried so far ?

[juve]

see this one if it is better?

[juve]

Maybe its my laptop screen but I cant see any shadows. What have u tried so far ?
we swapped transfer roller,than we swapped laser unit(because there were lines,know lines ok),refreshed firmware,checked all connections which have to do with charging,but the shadow effect remained.

[allan]

Check to see if the patern looks digital.
Check your TCR level.
Check for P-codes.
Change IU.

[EarthKmTech]

stupid question, but initialized and done a gradation adjust ?

[copier tech]

stupid question, but initialized and done a gradation adjust ?

Yeah I would ask the same & what are your image unit lifes on? & using OEM toner?

[juve]

Yeah I would ask the same & what are your image unit lifes on? & using OEM toner?
yes we made initialisation and gradiation.everything remains the same.regards lifetimes,i will check,but surely I will try to replace I/U's and transfer belt.there are no p codes.tcr level ok.dev unit black is not arcing,no dev spill.

[Max]

Went to a customer on Friday and they also had some background on the copy. Not as bad as yours but still visible. They are not using oem toner though. I got some proper stuff coming in on Wednesday, will let you know what happens.

[juve]

went to a customer on friday and they also had some background on the copy. Not as bad as yours but still visible. They are not using oem toner though. I got some proper stuff coming in on wednesday, will let you know what happens.
it seems that problem is solved after replacing c/m/y imaging units.seems ok!