A:Answer I bought mine a few weeks ago. The manual states two maintenance activities are needed; replacement of the roller assembly after 120,000 scans, and more frequent and vital routine cleaning of the rollers. I cleaned the rollers with the microfiber cloth after about every 300 scans for the first 3,000 scans or so. The manual recommends only the use of microfiber. This was working fine until about 3,000th scan. Then the typical symptoms of the dirty rollers (white lines and distortions) started to appear, in spite of the cleaning. Now I clean after each 50 scans but the distortion still appears on some scans. Oddly, the distorted copies appear on about 2 to 5% of the batch scan, not on all or not continuously. I escalated the cleaning method to the use of a vacuum cleaner, both suction and blow, and sticky tape but the distortions still occur. It's a great machine when it is working right.
