Yamaha PortaTone PSR-A300 서비스 매뉴얼 - 페이지 10
{카테고리_이름} Yamaha PortaTone PSR-A300에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Yamaha PortaTone PSR-A300 40 페이지.
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PSR-A300
10.
Keyboard Assembly
10-1
Remove the lower case keyboard assembly.
(See procedure 7)
10-2
White and black keys for one octave unit are
integrated as a set. There are five sets in total.
Remove the four (4) screws marked [200A]. The
keyboard can then be removed. (Fig. 6) There are
two (2) hooks at the back of the black keys. (Photo.1)
Press the hook for the black key and lift a little, and
pull forward to remove the hook for the black key to
lift it.
10-3
To remove the white key C6, remove the screw
marked [200B], press the hook at the back to lift a
little, and pull forward to remove the hook to lift it.
(Fig. 6)
11.
Rubber Contact
11-1
Remove the lower case keyboard assembly.
(See procedure 7)
11-2
Remove the keyboard corresponding to the rubber
contacts to be removed. (See procedure 10)
11-3
Remove the rubber contacts. (Photo. 2)
<Lower case keyboard assembly>
Top view
[200A]
C1
10
[200A]
[200A]
B2
[200]: Bind Head Tapping Screw-P 3.0X20 MFZN2Y (EP600680)
Hook
(Photo.1)
12.
Circuit Board 61L, Circuit Board 61H
12-1
Remove the lower case keyboard assembly.
(See procedure 7)
12-2
Circuit Board 61L
(Time required: About 6 minutes)
12-2-1 Remove the keyboards from C1 to B3.
(See procedure 10)
12-2-2 Remove the four (4) screws marked [180A], and
eight (8) screws marked [190A]. The circuit board
61L can then be removed. (Fig. 7-1)
∗
When installing the circuit board 61L, tighten the
screws 1 through 12 in numerical order. (Fig. 7-2)
12-3
Circuit Board 61H
(Time required: About 5 minutes)
12-3-1 Remove the keyboards from C4 to C6.
(See procedure 10)
12-3-2 Remove the three (3) screws marked [180B], and
five (5) screws marked [190B]. The circuit board 61H
can then be removed. (Fig. 7-1)
∗
When installing the circuit board 61H, tighten the
screws 1 through 8 in numerical order. (Fig. 7-2)
[200A]
[200A]
B3 C4
(Fig.6)
Rubber Contact
[200A]
[200B]
C6
(Photo.2)