[Misc] sharp mx-m550n light copies on back side when using adf

[dcooper]

I was wondering if someone could help me out. When using adf I get light copies only on back side, the front side is ok.
I haven't had to do anything with the CIS unit before so I was wondering if you can clean it or do you have to replace it.
If you have to replace it , are there any adjustments you have to do? Thanks for your your help!

[sharpie]

Re: sharp mx-m550n light copies on back side when using adf

If you scan duplex from glass are the 2nd side OK there?