10Chapter 5Chapter 5TroubleshootingDeveloping learning products is a responsibility that we at Oregon Scientific take very seriously.We make every effort to ensure the accuracy and appropriateness of the information which forms the value ofour products. However, errors can sometimes occur. It is important for you to know that we stand behind ourproducts and we encourage you to call our Consumer Services Department with any problems and/or suggestionsthat you might have. Our service representative will be happy to help you.Before contacting an authorised service representative at 1-800-853-8883, carry out the following simple checks.It may save you the time of an unnecessary service call.No displayAre the batteries installed properly?Do the batteries need replacing?Black-out screen or abnormal displayDisconnect the power supply by removing batteries for at least 10 seconds before connecting the power supplyagain.Conforms to safety requirements of ASTM F963, EN71 Parts 1,2 and 3 and EN62115.In an effort to continually improve our products, the actual screen display on the product may differ slightly fromthe diagrams shown.Please retain this manual for future reference.