Xerox Phaser 6505 Faded prints one side

[cucuklotz]

Hi
I have VERY LITTLE exp. with this machine ,but thought problem would be simple, The prints
are faded on left side of page ,most notably the black,the other colors seem a little better.
I swapped out drum unit and transfer assembly and had same problem,I havnt seen much online
about the model ,Other than getting a real Xerox tech,Can you offer some assistance with this
issue.,If it is a toner problem ,since I had same problem with a different imaging unit that
was working in another machine, I ASSume the toner is not the issue.
Thanks for any help,,,Andy

[copier addict]

Give the printheads (lasers) a good cleaning.