its C451 again ... copying issue

[konica7022]

hi guys

bizhub c451 is giving following copy (its like half unfused toner on the paper)

but print comes out fine ?

2200922008

and can some one pls send me a service manual for c451

[konica7022]

ok now its in the print as well

22010

but its only the black color that seems too be effected

[EarthKmTech]

black imaging unit failure, for reasons mentioned a thousand times before.

search the forum

[konica7022]

black imaging unit failure, for reasons mentioned a thousand times before.

search the forum

thank you

thats what i suspected, so i removed the black IU and saw same toner/dev!! rolling on the drum, cleaned it and slide it back in

now its working fine again!

except of the paper ejection gear!

[Konicoz]

Cleaning excess Dev off the drum will only be a temporary fix - it will come back and will most certainly affect c/q, you will need to replace the unit. There is a mod bulletin for the k drum as well that you can find on the km site