Yamaha PSR-S750, Руководство по обслуживанию

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PSR-S750/PSR-S950
20
21-6. Rubber Contact
21-6-1. Remove the rubber contact. (Fig. 15) (Photo 2)
21-7. White and Black Keys
21-8. Remove the twenty-one (21) screws marked [140K],
then remove the black keys from the lower notes.
(Fig. 16)
21-8-1. Remove the white keys DFA and C’. (Fig. 16)
21-8-2. Remove the while keys CEGB from the higher notes.
(Fig. 16)
* Lift the front portion of the keys and slide them
towards you. The keys can then be removed from
the assembly.
21. Disassembling the Keyboard Assembly
21-1. Remove the lower case assembly. (See procedure 2.)
21-2. Remove the keyboard assembly. (See procedure 14.)
21-3. EMKS61A Circuit Board
(Time required: About 5 minutes)
21-3-1. Remove the two (2) screws marked [30]. The
EMKS61A circuit board can then be removed.
(Fig. 14)
21-4. MK-L Circuit Board
(Time required: About 6 minutes)
21-4-1. Remove the EMKS61A circuit board.
(See procedure 21-3.)
21-4-2. Remove the MK-L circuit board while pressing the
eight (8) hooks A in the direction of the arrow.
(Fig. 15)
21-5. MK-H Circuit Board
(Time required: About 6 minutes)
21-5-1. Remove the MK-H circuit board while pressing the
seven (7) hooks A in the direction of the arrow.
(Fig. 15)
HOOK A
BLACK KEY
RUBBER CONTACT
WHITE KEY
MK-L MK-H
,
Fig. 14
Photo 2
Fig. 15
EMKS61A MK-L MK-H
[30]
RUBBER CONTACT