[. . . ] GUITAR/BASS AUTO TUNER OWNER'S MANUAL Thank you for purchasing the YAMAHA YT-100 Guitar/Bass Auto Tuner. Please read this manual thoroughly and keep it in a safe place for future reference. YT-100 PRECAUTIONS To prevent damage, do not use the tuner in the following locations: · places where the unit will be in direct sunlight; · places subject to temperature and humidity extremes; · places that are sandy or dusty. [. . . ] When the lamp flashes, loosen the string to lower its pitch. example) To tune the "E" string on a six string guitar. When this LED lights, the string is tuned correctly. The string name of the plucked string lights. INSTALL/REPLACE THE BATTERY 1. Press down on the battery cover (located on the back of the tuner) and slide it in the direction of the arrow. Install two AAA (R03/LR03) batteries in the battery compartment, making sure that the batteries are correctly aligned so that their polarity settings match the markings on the battery compartment. * Always slide the Power/Mode switch r to "OFF" before changing the battery. * Make sure that the batteries are aligned so that their polarity markings (+, ­) match those on the battery compartment. Using weak batteries batteries may result in irregular operation of the device. Please exchange worn batteries with new ones (two AAA (R03/ LR03)) as soon as possible. Bottom Do not leave a depleted battery in the tuner for an extended side period of time as damage to the tuner caused by leaking batteries, etc may result. Two AAA (R03/LR03) Battery cover SPECIFICATIONS Indicators Tuning Notes Standard Pitch Input Power Source Dimensions (W x H x D) : Pitch indicator, Tuning guides : GUITAR 7B, 6E, 5A, 4D, 3G, 2B, 1E BASS LB, 4E, 3A, 2D, 1G, HC : A4=440Hz (fixed) : Input jack (6 monaural), Built-in microphone : Two AAA (R03/LR03) batteries : 97 x 50 x 18 mm (3. 8" x 2. 0" x 0. 71") * Specifications and external appearance are subject to change without notice. FCC INFORMATION (U. S. A. ) 1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. [. . . ] If these corrective measures do not produce satisfactory results, please contact the local retailer authorized to distribute this type of product. If you can not locate the appropriate, please contact Yamaha Corporation of America, Electronic Service Division, 6600 Orangethorpe Ave, Buena Park, CA 90620 The above statements apply ONLY to those products distributed by Yamaha Corporations of America or its subsidiaries. [. . . ]