Automatic Quartz Guitar Tuner (630-1001) Care and Maintenance Faxback Doc. # 18339 Your Radio Shack Automatic Quartz Guitar Tuner is an example of superior design and craftsmanship. The following suggestions will help you care for the tuner so you can enjoy it for years. Keep the tuner dry. If it gets wet, wipe it dry immediately. Liquids might contain minerals that can corrode electronic circuits. Use and store the tuner only in normal temperature environments and avoid sudden temperature changes. Temperature extremes can shorten the tuner's life, damage batteries, and distort or melt plastic parts. Handle the tuner gently and carefully. Dropping it can damage the circuit boards and case and cause the tuner to work improperly. Keep the tuner away from dust and dirt, which can cause premature wear of parts. Wipe the tuner with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the tuner. Use only a fresh battery of the recommended size and type. Always remove an old or weak battery which can leak chemicals that can destroy electronic circuits. Modifying or tampering with the tuner's internal components can cause a malfunction and might invalidate the warranty. If the tuner is not performing as it should, take it to your local Radio Shack store for assistance. (LB-11/22/95) (PH 11/30/95)