User manual YAMAHA TX816 2

[. . . ] If the instrument is often moved, bolts, parts, etc. , may become loose. After moving the instrument, check and make sure all bolts, parts, etc. , are firmly fastened. Two persons should carry out this part of the assembly, double-checking as the assembly proceeds. PRECAUTIONS FOR HANDLING GAS SPRING Please observe the following instructions for proper handling of the gas spring. 1. Precautions for handling the gas spring This gas spring requires no oil supply to its sliding section. [. . . ] As a high pressure gas is sealed in it, disassembling it will cause a high risk. Depending on accuracy in its installation, the bending load will cause the rod to bend, resulting in malfunction. Caution Note that a nick on the piston rod or cylinder will shorten the service life of the sealing or cause a malfunction. Do not expose the gas spring to an excessively high or low temperature. Avoid using the instrument where it is exposed to to rain, water or much dust. Do not apply an excessive force to lift the frame end and pull off the gas spring from the leg. Do not apply a high tensile load to the gas spring as it will cause damage to the gas spring. In the event of a failure, stop using the instrument and contact the shop of its purchase. If your dealer is unable to assist you, please contact Yamaha directly. 2. 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. Do not make a hole anywhere other than the specified positions (q and w in the Fig. 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. ) * 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. We recommend to you to assemble the instrument on a soft rug or carpet. z Connect the large and the small end legs using the reinforcement stays. * Before proceeding to the next step, make sure that the slide guide fixing bolts of the large and small end legs are securely fastened. CAUTION Do not loosen the side guide fixing bolts in this stage. Loosening them will cause a sudden rise of the frame end which is very dangerous. Slide guide fixing bolts 1-1. Place the large and small end legs and reinforcement stays so that they will be positioned as illustrated below after assembly. Reinforcement stay (Large end) Reinforcement stay (Small end) Leg (Large end) Slant shaft Leg (Small end) 23 ASSEMBLY 1-2. Align the end of the fixing bolt and the holes in the reinforcement stays and tighten the fixing bolt securely. Screw hole Reinforcement stay (Large end) Reinforcement stay (Small end) 1-3. Insert the "E" marked end of the reinforcement stay (with its slant shaft facing down) into the joint (marked with "E") on the large end leg until it stops and tighten the fixing bolt securely. (There is no marking on the small end joint. ) Leg (Large end) Reinforcement stay (Large end) Fixing bolt 1-4. After making sure that both legs are perpendicular to the floor, fit the end of each slant shaft to the wing nut located in the lower part of each leg and tighten it securely. * Make sure that the slant shaft is securely fitted. Leg (Large end) Slant shaft Wing nut 24 ASSEMBLY x Insert the rails (2) and (3) into the end frames of the legs. 2-1. A mark "B" is printed on the big end face of the rail (2) and the groove section of the end frame of the big end leg. * Do not insert one side of the rail all the way down first, but push both sides into grooves alternately little by little until both sides are inserted fully and stop. A mark "C" is printed on the big end face of the rail (3) and the groove section of the end frame of the big end leg. "C" mark on the rail and end frame. [. . . ] Engage the short rail clamp located at the center of the rail (3) with the rail (2). * Release the clamp from its holder, lift and move it to the rail (2) and push it down fully. Rail (3) Rail (2) Rail clamp 25 ASSEMBLY c Attach the resonators. 3-1. Unbend the resonators, apply a hook and tighten the wing nut securely. * When assembling the resonators, use care not cause any damage to them. Hook Wing nut 3-2. [. . . ]