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K A W A I G R A N D P I A N O

R E G U L A T I O N M A N U A L

Ver 1.4 2011/7/21

Piano Laboratory

Supervisor

Kazuo Goka

Содержание SK-7

Страница 1: ...K AWA I G R A N D P I A N O R E G U L A T I O N M A N U A L Ver 1 4 2011 7 21 Piano Laboratory Supervisor Kazuo Goka...

Страница 2: ...ace Levers to Knuckls Whippens to Capstan Screws P11 Repetition Spring P12 Jack Alignment Height P13 Key Height P14 Hammer Blow Distance P15 Hammer Rest Rail P16 Hammer Letoff P16 Hammer Drop P17 Key...

Страница 3: ...screws around the outside countersunk Phillips screws on the pinblock section These should be tightened with a 17mm socket for hexagonal screws and Phillips No 4 head for the countersunk screws as wi...

Страница 4: ...ion forward glue a shim thin wood veneer onto the hard wood block at the back side of the Keyframe To move the action back file the wood block After the block is set correctly then adjust the keyframe...

Страница 5: ...p position Also check with the keys in the depressed down position Proper gap should be 0 2 mm to 0 3mm with a small but clear knock sensation Easing a tight front hole bushing using key pliers 3 2 Ba...

Страница 6: ...s then ease the balance hole This process must be done carefully until the key moves with the desired ease but is not too loose Do not ease the front and back of the balance rail Only ease the sides o...

Страница 7: ...Note It is normal for the keyframe front rail to lift up at the ends during dry weather Be aware of the relative humidity when bedding the keyframe For the back rail remove the keys and tap on the ac...

Страница 8: ...not moving straight up Place a piece of travel paper between the flange and hammer rail on the same side of the screw as the direction the hammer is traveling Differences in thickness or length of pa...

Страница 9: ...hings After the hammer angle is corrected Space Hammers to Strings For single and bi chord notes the hammers should be centered under the strings Note Double check that the soft pedal is adjusted to a...

Страница 10: ...s In the trichord note section the bass side of the hammer should overlap the left string 1mm For easy hammer spacing put 1mm shim metal ruler between keyframe and action stop block Use the Hammer fla...

Страница 11: ...e centered on the repetition lever the capstan on the repetition cushion and the jack on the regulating button To adjust lateral position of the wippen loosen the screw and shift the wippen over or in...

Страница 12: ...y the hammer back up in a slow easy movement without jumping or catching If the movement is too slow dislocate the top section of the spring and pull upwards If the movement is too fast press the spri...

Страница 13: ...htly lower than the repetition lever 0 1 mm to 0 2mm When turning the regulating screw depress the repetition lever to avoid damaging the felt button and pad To check repetition lever setting To check...

Страница 14: ...then level all keys with a straightedge MODELS NEOTEX SKEX EX GS100 68 0mm SK 7 RX 7 68 0mm SK 6 RX 6 RX A RX B 66 0mm SK 2 3 5 RX 2 3 5 66 0mm Place thicker punchings lower on the pin and thinner pu...

Страница 15: ...Hold the blow distance gauge between one hammer and the string then adjust the capstan on the next hammer so that it matches the sample The blow distance should be 46mm Once sample hammers are set sli...

Страница 16: ...toff Distance To improve accuracy place a light directly above the string and watch the string s shadow on the hammer felt Press each key down slowly with one hand while adjusting the letoff dowel wit...

Страница 17: ...e Key Dip Using a dip block 10 1mm depress each key and compare with height of the neighboring key Add or subtract punchings until desired dip is achieved Put paper punchings under cloth Make certain...

Страница 18: ...keys Remove or place punchings underneath until the aftertouch feel is the same Put paper punchings under cloth Thicker card and paper should be lowest on the pin thinner paper upper There should be...

Страница 19: ...ayed and the hammer is in check tap the hammer down into the backcheck If the hammer can be pushed down all the way then the backcheck angle is too vertical Alignment Using bending pliers space the ba...

Страница 20: ...key of each section then align the other keys Check to see that the hammer tails do not drag on the back check by moving the key with one hand and pushing down on the hammer with the other If the tail...

Страница 21: ...n pressure for each of the studs For left side stud push Una Corda Pedal slightly to check Start by setting the stud at the tenor break just above the bass section then set the bass end and recheck th...

Страница 22: ...he damper wire twice Keep the damper wire and damper head parallel When you push up damper lever slowly the backside of damper should lift up very slightly earlier than front side The damper wire shou...

Страница 23: ...ching between the pitman and the damper lift rail Adjust pedal rod head to set the sample damper levers so that they start moving when the hammer is 23mm 1 2 blow distance from string Tighten damper w...

Страница 24: ...p flange and move the damper up or down Do not use the capstan screws for this adjustment Damper Upstop Rail Press a black key and lift the damper head to see how much movement is remaining 1 to 2 mm...

Страница 25: ...edal rod The head and pedal lever should have lost motion of 1 2mm at the damper lever Tighten the bottom lock nut with 10mm spanner while holding the pedal rod Pedal Stop Capstan The dampers should b...

Страница 26: ...rod away from the tabs Adjustment should be uniform across the rod from bass to treble When one screw is tightened the other should be backed off by the same amount to avoid unnecessary tension Adjust...

Страница 27: ...sections The left string should not be struck Shift pedal Adjust with the pedal rod head and tighten lock nut so there is no lost motion in the pedal Adjust the screw in the right cheek block so the a...

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