Quote:
Originally Posted by KLausPetersen
Perhaps your "DOC" Files are not 100% compatible with the Kindle.
You could just convert them with Calibre to a compatible format.
PDF is no eBook format. Its a document format to electronically save the original appearence of a document.
Just convert PDFs to a eBook format and you can use them like an eBook.
I don't know about the lights. Could be a broken device.
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All of my pdf files are about biotechnology, immunology, chemistry and other scientific majors. I tried to convert these files into mobi files like prc but all of them became chaotic since the old formats were broken into terrible format. It means that when I tried to convert pdf to prc using Calibre, all of images and letters in the output prc files became chaotic

they did not suit each other anymore
I am a newbie to Kindle, and I don't know how to solve

May you please instruct me?