Yamaha KB-180, Руководство по обслуживанию

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11
KB-180/SKB-180
PB
Wheel assembly
C6 C1 C2 C3 B2 B3 C4 C5
[200A]
<Top view>
• Lower case assembly
Speaker L
Speaker R
Keyboard assembly
[200A]
[200B] [200B] [200B] [200B] [200B] [200C]
8. PNR Circuit Board
(Time required: About 6 minutes)
8-1 Remove the lower case assembly. (See procedure 1.)
8-2 Remove the thirteen (13) screws marked [210J]
and six (6) screws marked [210K]. The PNR circuit
board can then be removed. (Fig. 10)
9. Speaker Grilles L and R
(Time required: About 3 minutes)
9-1 Remove the lower case assembly. (See procedure 1.)
9-2 Set the eight (8) hooks [A] parallel to the groove in
the upper case assembly and remove the SP grille
L. (Fig. 1, Fig. 6)
* The speaker grille R can be removed in the
same manner.
10. PB Circuit Board and Wheel Assembly
(Time required: About 2 minutes)
10-1 Remove the lower case assembly. (See procedure 1.)
10-2 Remove the two (2) screws marked [210N] and
remove the PB circuit board with the wheel assembly
attached. (Fig. 10)
10-3 Pull out the wheel assembly from the PB circuit
board. (Fig. 11)
11. Speakers
(Time required: About 3 minutes)
11-1 Remove the lower case assembly. (See procedure 1.)
11-2 Remove the four (4) each screws marked [200A]
to the right and left. The speakers to the right and
left can then be removed. (Fig. 12)
Fig. 11
[200A]: Bind Head Tapping Screw-B 4.0X10 MFZN2W3 (WE974500)
[200B]: Bind Head Tapping Screw-P 3.0X20 MFZN2W3 (WF492000)
[200C]: Bind Head Tapping Screw-P 3.0X20 MFZN2W3 (WF492000)
Fig. 12