Gp335 juddered lines

[Funnyfarm69]

Hi, have a GP335 which is juddering lines in direction of print. This is happening on copies and test prints. There is no consisteny in the space between the judders. On an A4 copy there are 15 judders unevenly spaced. I can only describe as a trace line on a heart moniter. Have changed drum unit, cleaned scan rail, transfer roller appears fine, stopped copy before fuser unit. Happens from all trays and on duplex. Any thoughts ????

All I can think is poss laser unit!!!

Thanks.

[smiley]

hello...
have you already try to clean the ccd and the laser unit?