KM 450i with fusing problem

[aligis]

hi everyone we have 3 km 450i mfp , on diffrent location, they have simillar problem, reprint image( about half area of the orignal image ), in both color/BW. we have change the fuser units, drum unit of K, firmware but no success.
any idea.:confused:

[tsbservice]

Can you share MML of troublesome machine?

[blackcat4866]

Can you share MML of troublesome machine?

... and a quality sample? =^..^=

[tsbservice]

... and a quality sample? =^..^=
Of course I thought that's out of question but there are different people :cool:

Who ever will start CQ thread without examples :confused:
(hint - most of people)