Yamaha SILENT Piano YU11SD Service Manual - Page 8

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Yamaha SILENT Piano YU11SD Service Manual
SILENT SD SERIES
2-6
AM Circuit Board (Time required: About 3 minutes)
2-6-1 Remove the switch box front panel. (See procedure A-2-1)
2-6-2 Remove the switch box upper case. (See procedure A-2-2)
2-6-3 Remove the screw marked [51GA] and two (2)
screws marked [122G]. The switch box PCB chassis
can then be removed together with the DM circuit
board and DC-IN circuit board. (Fig. A-4)
2-6-4 Remove the two (2) hexagonal nuts marked [B],
two (2) hexagonal nuts marked [112G], and three
(3) screws marked [111G]. The AM circuit board
can then be removed. (Fig. A-5)
(照光シーソーSW)
[51GA]: Bind Head Tapping Screw-S (Sタイト+BIND) 3.0X6 MFZN2B3 (WE877800)
[121G]: Bind Head Tapping Screw-S (Sタイト+BIND) 3.0X6 MFZN2B3 (WE877800)
[122G]: Bind Head Tapping Screw-S (Sタイト+BIND) 3.0X6 MFZN2B3 (WE877800)
[131G]: Bind Head Tapping Screw-S (Sタイト+BIND) 3.0X6 MFZN2B3 (WE877800)
[111G]: Bind Head Tapping Screw-S (Sタイト+BIND) 3.0X6 MFZN2B3 (WE877800)
[112G]: Hexagonal Nut (ナット 特殊) M12X14X2 P=1.0 (WF559900)
8
[122G]
Switch box PCB chassis
(SB基板シャーシ)
Seesaw switch
Hook
(ツメ)
[111G]
[B]
[112G]
AM シート(所要時間: 約 3 分)
2-6
2-6-1
SB 前パネルを外します。 (A-2-1 項参照)
2-6-2
SB 上ケースを外します。 (A-2-2 項参照)
2-6-3
[51GA]のネジ 1 本と[122G]のネジ 2 本を外して、
DMシートと DC-INシートと共にSB 基板シャーシ
を外します。 (図 A-4)
2-6-4
[B]の六角ナット 2 個と[112G]の六角ナット 2 個、
[111G]のネジ3本を外して、 AMシートを外します。
(図 A-5)
[131G]
[121G]
DC-IN
DM
Fig. A-4(図A-4)
[111G]
AM
[111G]
Fig. A-5(図A-5)
[131G]
[121G]
Connector assembly-SW
(SW束線)
[51GA]