IM 550 Very Light copies

[FrohnB]

Have you cleaned the LED array above the drum??
common problem on this model. Usually one side is voided or light.
Do you have a sample you can upload?

[MIKON]

Update

I went back with powerpack advised by helpdesk.
And before i had to tear the whole machine apart to get to it.I removed the transfer roller to inspect it,and when I reinstalled it the copies were back to normal.I don't know if it was a bad electrical connection or the roller was not rotating. But it is working.