User manual YAMAHA YP40

[. . . ] For name plate location, please refer to the graphic found in the Special Message Section of this manual. G To avoid possible damage do not expose the unit to: · direct sunlight · Very high or low temperature/humidity · Sand or excessive dust * Especially inside a vehicle, the temperature may rise excessively -- do not leave the YP40 in your parked car on a sunny day!G Before connecting/disconnecting cables or turning the unit on/ off, be sure to set the VOLUME control on the YP40 to 0. G Keep the YP40 away from neon signs or fluorescent lighting to prevent noise pickup. [. . . ] G Handle the unit carefully -- never apply excessive force to the controls and avoid dropping the unit. G For safety, always remove the power plug from the AC wall outlet if there is any danger of lightning striking in your area. G To prevent damage and possibly electrical shock, never open the case and tamper with the internal circuitry. G Never use solvents such as benzene or thinner to clean the YP40. DANGER-Grounding Instructions: This product must be grounded and therefore has been equipped with a three pin attachment plug. If this product should malfunction, the ground pin provides a path of low resistance for electrical current, reducing the risk of electrical shock. If your wall socket will not accommodate this type plug, contact an electrician to have the outlet replaced in accordance with local electrical codes. WARNING: Do not place this product or any other objects on the power cord or place it in a position where anyone could walk on, trip over, or roll anything over power or connecting cords of any kind. The use of an extension cord is not recommended!If you must use an extension cord, the minimum wire size for a 25' cord (or less) is 18 AWG. when the switch is in the raised position (?), the sound produced by the amplifier is clear, not distorted. This knob controls the level of the amplifier's low frequencies. IMPORTANT: The louder the sound, the shorter the time period before damage occurs. Connect a pair of headphones to this jack. * The speaker will produce no sound when a pair of headphones is connected to this jack. This knob controls the volume level of the amplifier. * No sound is produced when the VOLUME knob is set to its "0" position. Some Yamaha products may have benches and/or accessory mounting fixtures that are either supplied as a part of the product or as optional accessories. Some of these items are designed to be dealer assembled or installed. [. . . ] Some of these items are designed to be dealer assembled or installed. Please make sure that benches are stable and any optional fixtures (where applicable) are well secured BEFORE using. benches supplied by Yamaha are designed for seating only. This is the amplifier's power switch. [. . . ]