29 October 2021
When wiping off dirt on the recording surface, use a soft cloth such as eyeglass wipes that does not generate fiber waste or a commercially available cleaner. Wipe lightly from the center of the recording surface to the outer circumference so that it is not scratched. If you wipe in the circumferential direction, there is a high possibility that data will be lost if scratches are made by mistake, so it is not recommended to wipe. Also, when using a commercially available cleaner, please check the instruction manual of the cleaner.