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Title: Multiple failures
Review: I have approximately 10,000 slides to scan. I purchased the 4850 and after about 3,000 slides began to get three to four dark blue lines across the image. After reporting it to HP they sent me a replacement TMA. The new TMA worked fine for the first 450 slides and then BINGO, I now am getting two dark blue lines again. I think the machine is not engineered to handle the work load I have.
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