DS-40 User’s Guide Maintenance D Slide in the battery cover and close it firmly. ! Warning: ❏ Make sure the positive and negative terminals of the batteries are installed in the correct direction. ❏ When changing the batteries, change all four at the same time and use the same type. ❏ When disposing of batteries, make sure you completely cover the ends of the batteries with tape to prevent combustion or explosion. ❏ Do not dispose of batteries as general waste. Dispose of them in a collection or recycle box in accordance with your local laws and regulations. Cleaning the Product To keep your product operating at its best, follow the steps below to clean it periodically. c Important:
❏ Never use thinner or corrosive solvent to clean the product. These chemicals can damage the product components and the case. ❏ Be careful not to spill liquid into the product mechanism or electronic components. This could permanently damage the mechanism and circuitry. ❏ Do not spray lubricants to the product. ❏ Never open the product case. A Turn off the product. B Unplug the USB cable from the product and your computer, or AC adapter from the product if you use it. C Wipe off any dirt on the outer case with a soft cloth. Note: If the case is very dirty, dampen a soft cloth with water and wring it well, and then wipe off any remaining stains.
After that, use a soft dry cloth to wipe the case. 38