Yamaha PSR-F50 Service Manual - Page 9

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Rubber Contact

5-4

5-4-1 Remove the white and black keys corresponding to the

rubber contacts to be removed.

(See Fig.4 and Procedure 5-3.)

5-4-2 Remove the rubber contacts. (Photo.2, Fig.5)

5-5

61L Circuit Board

5-5-1 Remove the white and black keys from C1 to B3.

(See Fig.4 and Procedure 5-3.)

5-5-2 Remove the twelve (12) screws marked [90A]. The 61L

circuit board can then be removed. (Fig.5)

5-6

61H Circuit Board

5-6-1 Remove the white and black keys from C4 to C6.

(See Fig.4 and Procedure 5-3.)

5-6-2 Remove the eight (8) screws marked [90B]. The 61H

circuit board can then be removed. (Fig.5)

Fig.5

Photo.2

PSR-F50