Yamaha Portatone PSR-1500, Руководство по обслуживанию

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PSR-1500/PSR-3000
21
[30]
EMKSA MK-L MK-H
(Fig. 12)
[30]: Bind Head Tapping Screw-P 3.0X8 MFZN2BL(EP630220)
Rubber contact
Hook A
Black key
Rubber contact
White key
MK-L MK-H
,
(Fig. 13)
(Photo 2)
18. Disassembling the Keyboard Assembly
18-1. Remove the lower case assembly. (See procedure 1.)
18-2. Remove the keyboard assembly. (See procedure 13.)
18-3. EMKSA Circuit Board
(Time required: About 4 minutes):
Remove the two (2) screws marked [30]. The EMKSA
circuit board can then be removed. (Fig. 12)
* Be sure to make a correct match when
connecting the EMKSA (CN1) and DM (CN13) for
PSR-1500, or when connecting the EMKSA (CN1)
and DM2-E (CN16) for PSR-3000. Connecting the
connectors in the wrong way may cause damage
to the EMKSA circuit board.
18-4. MK-L Circuit Board, MK-H Circuit Board
(Time required: About 5 minutes):
Remove the MK-L and MK-H circuit board while
pressing the fifteen (15) hooks A inward, and then remove
the rubber contact. (Fig. 13)
18-5. Rubber Contact:
Remove the rubber contact. (Fig. 13) (Photo 2)
18-6. White and Black Keys:
18-6-1. Remove the twenty-one (21) screws marked [140], then
remove the black keys from the lower notes. (Fig. 14)
18-6-2. Remove the white keys DFA and C'. (Fig. 14)
18-6-3. Remove the while keys GEGB from the higher notes.
(Fig. 14)
* Lift the keys from the front and slide them
towards you. The keys can then be removed form
the assembly.