[. . . ] If there is no sound from one or both speakers, unplug your speakers and plug them in again. Thank you for purchasing the Speaker System Z320 from Logitech®. Your Logitech® speakers are easy to use, quick to install, and produce great sound. [. . . ] Before submitting a warranty claim, we recommend you visit the support section at www. Valid warranty claims are generally processed through the point of purchase during the first thirty (30) days after purchase; however, this period of time may vary depending on where you purchased your product. Please check with Logitech or the retailer where you purchased your product for details. Warranty claims that cannot be processed through the point of purchase and any other product related questions should be addressed directly to Logitech. The addresses and customer service contact information for Logitech can be found in the documentation accompanying your product and on the web at www. Logitech shall not be liable for any special, indirect, incidental, or consequential damages whatsoever, including but not limited to loss of profits, revenue or data (whether direct or indirect) or commercial loss for breach of any express or implied warranty on your product even if Logitech has been advised of the possibility of such damages. Some jurisdictions do not allow the exclusion or limitation of special, indirect, incidental, or consequential damages, so the above limitation or exclusion may not apply to you. Except to the extent prohibited by applicable law, any implied warranty or condition of merchantability or fitness for a particular purpose on this hardware product is limited in duration to the duration of the applicable limited warranty period for your product. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. Consumers have legal rights under applicable national legislation governing the sale of consumer goods. Such rights are not affected by the warranties in this Limited Warranty. No Logitech dealer, agent, or employee is authorized to make any modification, extension, or addition to this warranty. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: The manufacturer is not responsible for ANY interference, for example RADIO OR TV interference, caused by unauthorized modifications to this equipment. [. . . ] This symbol would then be located in the manual section adjacent to the marking that refers to the area of concern. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: The manufacturer is not responsible for ANY interference, for example RADIO OR TV interference, caused by unauthorized modifications to this equipment. [. . . ]