Yamaha PSR-S750 Service Manual page 21

22. Assembling the Keyboard Assembly
22-1. Install the white keys CEGB from the lower notes.
(Fig. 16)
22-2. Install the white keys DFA and C'. (Fig. 16)
22-3. Install the black keys from the higher notes, and
tighten the twenty-one (21) screws marked [140K].
(Fig. 16)
* To install the white and black keys, insert the
projections of the keys into the respective slots [C]
on the frame fi rst. (Photo 3, Photo 4, Photo 5)
BLACK KEY
Fig. 16
Projection
WHITE KEY
Photo 3
[140K] x 21
WHITE KEY DFA
WHITE KEY CEGB
WHITE KEY C'
Projection
BLACK KEY
Photo 4
22-4. Install the rubber contacts while pulling the keys up.
(Fig. 17, Fig. 18)
* When fi tting the rubber contacts, raise both ends
of the frame so that keys do not push the rubber
contact up.
22-5. Install the MK-L and MK-H circuit boards in the
assembly so that the hooks B hold it. (Fig. 19)
RUBBER CONTACT
Fig. 17
MK-L MK-H
,
HOOK B
Fig. 19
WHITE KEY
PSR-S750/PSR-S950
RUBBER CONTACT
Fig. 18
[C] FRAME
Photo 5
21