User manual YAMAHA YM-4600A

[. . . ] If an earthquake occurs, strong shocks caused by the earthquake may overturn the instrument or cause it to move about. Stay away from the instrument during earthquakes. Cautions when moving the instrument. When moving the instrument on its casters, only move across smooth, flat surfaces. Hold the instrument by its frame end and push forward slowly. When moving the instrument on its casters. [. . . ] Instructions for discarding the gas Danger Make sure to observe the following instructions when discarding the gas spring. As pressurized nitrogen gas is sealed in the gas spring, be sure to release before discarding it. Or an explosion may occur, causing an injury. [PRECAUTIONS] A. Do not make a hole anywhere other than the specified positions (q and w in the Fig. 1). 1 Drill 15mm q w 35mm Plastic bag [Discarding procedure] 1. Using a drill of 2 to 3 mm, make a hole q from outside of the plastic bag at the position as specified in the figure to release the gas and oil and then make a hole w at the position as specified. (Be sure to make holes in the order of q and w. If a vinyl bag is not used, the oil and drill chips will spread. (In such a case, wear eye protection glasses. ) * Drill 2 holes as shown above to release the gas before discarding the gas spring. 19 PRECAUTIONS Please read the following instructions carefully before using your marimbas. Installation Location Use or storage in the following locations may cause damage, even when packaged. · In direct sunlight, such as near a window, or in a closed vehicle in daytime. · Near heating devices or in other locations subject to excessive heat. · In excessively cold environment. · In places with excessive humidity or dust. · Locations subject to vibrations. Handling · Never place an object on or lean against the instrument, as this may cause damage to the tone bars and frame parts or topple the instrument, which is extremely dangerous. · Do not use hand orchestra bell mallets or other hard objects on your marimbas. The resulting dents or scratches in the tone bars could impair the sound. Moving and Transporting the Instrument · Before moving the instrument, make sure that the caster brakes are released. Also make sure to lift the instrument slightly when moving over rough surfaces. · When the instrument must be transported to a different location, disassemble it to the same state as when it was purchased (See page 22. ), taking care to pack each component properly. Disassembly steps are in the opposite order of assembly. When Not in Use · Always engage the caster brakes. Maintenance · The tone bars should be polished from time to time using a soft and dry cloth or silicone cloth. Stains that cannot be removed with a dry cloth may be wiped off using a small amount of ethyl alcohol. Never use thinner or benzene or a wet cloth for cleaning purplses. Keep This Manual for Future Reference · After reading, make sure to keep the manual in a safe place. Assembly Cautions · When assembling/disassembling the instrument, do so with at least two persons and follow the instructions outlined in this manual. [. . . ] Each of F#22, G23, G#24, A25 and A#26 resonators has a resonance regulator. While tapping each tone bar, move the resonance regulator to find the position where the best resonance is obtained and fix it there. * When fixing the resonance regulator, check to ensure that it is not aslant. Resonance regulator 28 ASSEMBLY YM-4600A/4100A Only 5-2. As YM-4600A/4100A does not have a resonance regulator, insert resonators into resonator holders as shown below. * The resonators are factory adjusted so that the optimum resonance level is obtained at 23°C. [. . . ]