Yamaha PortaTone PSR-270, Руководство по обслуживанию, Страница: 10 / 33

PSR-270
10
[30]: Bind Head Tapping Screw-P 3.0X8 MFZN2Y (EP600280)
[340]: Bind Head Tapping Screw-P 3.0X25 MFZN2Y (VK228100)
(Fig. 6)
[350]: Bind Head Tapping Screw-P 4.0X8 MFZN2BL (VB931600)
(Fig. 7)
11 Speakers
11-1 Remove the lower case assembly. (See Procedure 1.) 11-2 Remove the eight (8) screws marked [350]. The right
and left speakers can then be removed. (Fig. 6)
12 Disassembling the keyboard assembly
12-1 Remove the keyboard assembly. (See Procedure 1.)
12-2 Remove the two (2) screws marked [30]. The MKS3
circuit board can then be removed. (Fig. 7)
12-3 Remove the MK circuit board while pressing the
fifteen (15) hooks (A) inward, and then remove the
rubber contact. (Fig. 8)
12-4 Remove the twenty-one (21) screws marked [140].
12-5 Remove the black keys from the lower notes. Af-
terwards, remove the white keys DFA and C', then
remove the white keys CEGB from the higher notes.
At this time, lift the keys from the front and slide
them towards you. The keys can then be removed
from the assembly. (Fig. 9)