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We have done this. It doesn't show the dots while on full color scans but it has a pink band which doesn't work due to it being a bank.

Ok we will try that next and hopefully we get some results.

Reverse. But it does it off the glass as well.

Yes it happens with a blank piece of paper. The machine environment is very clean. It is in a bank that get cleaned everyday.

I am having the same problem with a 3500i. We have tried the sata cable from the main PCB to the scanner board. Have also tried replacing both boards. Lost on what to do next. Problem occurs when...