Have a Falcon I machine with intermittant wavy print. The image sways from machine front to rear. I was told it happens on prints as well as copiies, although I've never had it happen to me, I have seen many examples. I replaced the laser with a used, but the problem still exsists.

Any ideas?

Tom

Sounds like the used laser was bad also.

I had one that ended up being the power supply and had another being the dimm.

Good luck

Check MC assy

I agree with Guru. If the MC asy is shorting out it will cause an effect making you think its the laser unit