km 3850, 3 yearfs old, drum and developing roller recently replaced for the same problem,
copy will light only in center area . before replacing the developing roller, i cleaned it , some kind of toner coating like shining found above the roller . after cleaning, it was working ok( not 100% ok) better than before. but again same problem started, then only i replaced drum and developing roller.
2 months after same problem started . we have three KM 3850 machine in same place. i inter changed the drum, dev units... nothing helped me.... infact other machines also having same problem,
any suggestions please....
copy will light only in center area . before replacing the developing roller, i cleaned it , some kind of toner coating like shining found above the roller . after cleaning, it was working ok( not 100% ok) better than before. but again same problem started, then only i replaced drum and developing roller.
2 months after same problem started . we have three KM 3850 machine in same place. i inter changed the drum, dev units... nothing helped me.... infact other machines also having same problem,
any suggestions please....
Comment