|
Solved the problem. Adjust the screen brightness using the custom settings so that there is a much better contrast on the screen. This will prevent eye fatigue. Found out from other forums, that placing large PDF files on the SD card will cause the screen to freeze frequently. Calibre can convert these files to ePub files - though it takes a while to do so. We of course do not want to convert all of our PDF files to ePub files, as some (especially if containing foreign language scripts ) will become unreadable if converted to ePub.
|