Yamaha P-70 Service Manual page 11

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9.
Disassembling the Keyboard Assembly
9-1 White key assembly and black key assembly
Remove the four (4) screws marked [270A] fixing the
black and white key assembly for one octave (C—B).
To remove the back of the black and white key
assembly of each octave, while pushing the end lug
of white keys rearward and lifting the back of keys,
slide the black and white key assembly towards you.
(Fig. 1, Fig. 2)
9-2 When removing white keys numbered as A-1 and B-1
key and black key, remove two (2) screws marked
[270B] and then lift the back of the keys and slide
the black and white keys towards you. (Fig. 1)
9-3 When removing the C7 key, remove a screw marked
[270C] and then lift the back of C7 key and slide it
towards you. (Fig. 1)
Note: When removing white key assembly and black key
assembly, be careful not to allow grease to attach to
the circuit board and rubber contacts, etc. (Fig. 2)
9-4 Actuate Rubber
Remove the actuate rubber. (Fig. 3)
Keyboard Assembly (Top view)
[270B]
[270A]
One octave
A-1 Key
(1オクターブ)
(1オクターブ)
(A-1鍵)
(C0—B0)
B-1 Key
[270]: Bind Head Tapping Screw-P 3.0x16 MFZN2W3 (WF973000) Pタイト+BIND
(B-1鍵)
Rubber contact
(接点ゴム)
GHL88M
[270A]
[270A]
One octave
One octave
(1オクターブ)
(C1—B1)
(C2—B2)
End lug of white key
(白鍵の爪)
Grease
(グリス)
(Fig. 2)
9. 
GHL (GHS) 鍵盤Ass'yの分解
白鍵Ass'y、黒鍵Ass'y
9-1 
 
各オクターブ (C〜B) の白鍵Ass'yと黒鍵Ass'yを止 
 
めている[270A]のネジ4本を外し、白鍵のツメを後 
 
方に押しながら1オクターブ分の白鍵Ass'y/黒鍵 
 
Ass'yを外します。このとき、白鍵Ass'y/黒鍵  
 
Ass'yの後部を持ち上げてから、手前にスライドさ 
 
せて取り外してください。(図1、図2)
9-2 
A-1, B-1鍵は、[270B]のネジ2本を外し、A-1, B-1鍵 
 
の後方を持ち上げてから、手前にスライドさせて 
 
取り外します。(図1)
9-3 
C7鍵は、[270C]のネジ1本を外し、C7鍵の後方を 
 
持ち上げてから、手前にスライドさせて取り外し 
 
ます。(図1)
注)  白鍵Ass'y、黒鍵Ass'yの取り外しの際、グリスが基 
 
板や接点ゴム等に付かないように注意してくださ 
 
い。(図2)
駆動ラバー
9-4 
 
白鍵 (黒鍵) の駆動ラバーを外します。(図3)
[270A]
[270A]
One octave
One octave
(1オクターブ)
(1オクターブ)
(C3—B3)
(C4—B4)
(Fig. 1)
[270A]
[270A]
One octave
One octave
(1オクターブ)
(1オクターブ)
(C5—B5)
(C6—B6)
Remove in this way.
(取り出す)
Actuate rubber
(駆動ラバー)
(Fig. 3)
P-70/P-70S
[270C]
C7 Key
(C7鍵)
11

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