Yamaha PSR-E223 Manual page 13

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6-4
Rubber Contact
6-4-1 Remove the white and black keys corresponding
to the rubber contacts to be removed. (See Fig.6
and Procedure 6-3.)
6-4-2 Remove the rubber contacts. (Photo 2, Fig.7)
6-5
MK-L Circuit Board
6-5-1 Remove the white and black keys from C1 to B3.
(See Fig.6 and Procedure 6-3.)
6-5-2 Remove the four (4) screws marked [90B] and
eight (8) screws marked [100C]. The MK-L circuit
board can then be removed. (Fig.7)
6-6
MK-H Circuit Board
6-6-1 Remove the white and black keys from C4 to C6.
(See Fig.6 and Procedure 6-3.)
6-6-2 Remove the three (3) screws marked [90C] and
fi ve (5) screws marked [100D]. The MK-H circuit
board can then be removed. (Fig.7)
Top view (上から見た図)
RUBBER CONTACT
(接点ゴム)
[90B]
[90]: BIND HEAD TAPPING SCREW-B (Bタイト+BIND) 3.0X8 MFZN2W3 (WE774301)
[100]: BIND HEAD TAPPING SCREW-P (Pタイト+BIND) 3.0X12 MFZN2W3 SP (WH899400)
RUBBER CONTACT
RUBBER CONTACT
(接点ゴム)
[90B]
[90B]
[100C]
[100C]
MK-L
RUBBER CONTACT (接点ゴム)
Photo 2 ( 写真2)
6-4 
接点ゴム
6-4-1  外そうとする接点ゴムに対応した白鍵・黒鍵を外
します。 (図 6、6-3 項参照)
6-4-2  それぞれの接点ゴムを外します。 (写真 2、図 7)
6-5 
MK-L シート
6-5-1  C1 〜 B3 の白鍵・黒鍵を外します。
 
(図 6、6-3 項参照)
6-5-2  [90B] のネジ 4 本と [100C] のネジ 8 本を外して、
MK-L シートを外します。 (図 7)
MK-H シート
6-6 
6-6-1  C4 〜 C6 の白鍵・黒鍵を外します。
 
(図 6、6-3 項参照)
6-6-2  [90C] のネジ 3 本と [100D] のネジ 5 本を外して、
MK-H シートを外します。 (図 7)
RUBBER CONTACT
(接点ゴム)
(接点ゴム)
[90B] [90C]
MK-H
Fig.7 ( 図7)
PSR-E223/YPT-220
RUBBER CONTACT
(接点ゴム)
[90C]
[90C]
[100D]
13

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