Yamaha HS8 Service Manual page 12

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HS8/HS7/HS5
7.
TR Circuit Board, Power Transformer
(Time required: About 8 minutes)
7-1
Remove the four (4) screws marked [310]. The TR circuit
board can then be removed together with the power
transformer. (HS8, HS7: Fig. 9-1)(HS5: Fig. 9-2)
*
When installing the TR circuit board and power
transformer, first tighten the two (2) priority screws
in order as shown in Fig. 9.
7-2
Unsolder the leads of the power transformer. The
TR circuit board and power transformer can then be
separated. (Fig. 10)
Rear view (背面から見た図)
AMP assembly
(アンプAss'y)
Priority screw (2nd)
(優先ネジ (2) )
[310]
Priority screw (1st)
(優先ネジ (1) )
AMP assembly
(アンプAss'y)
[310]
Priority screw (1st)
(優先ネジ (1) )
Priority screw (2nd)
(優先ネジ (2) )
12
<HS8, HS7>
Power transformer
(電源トランス)
Fig. 9-1 ( 図9-1)
<HS5>
Priority screw (2nd)
Fig. 9-2 ( 図9-2)
7. 
TR シート、 電源トランス (所要時間 : 約 8 分)
7-1 
[310]のネジ 4 本を外し、電源トランスと共に
TR シートを外します。
 
(HS8, HS7:図 9-1) (HS5:図 9-2)
  ※   TR シート、電源トランスを取り付けるときには、優先
ネジ 2 本を図に示す順で先に締めてください。 (図 9)
7-2 
電源トランスのリードのハンダ付け部分からハン
ダを取り除き、TR シートと電源トランスを別け
ます。 (図 10)
Priority screw (1st)
(優先ネジ (1) )
[310] x 4
TR
(優先ネジ (2) )
[310] x 4
TR
Priority screw (2nd)
(優先ネジ (2) )
Power transformer
(電源トランス)
Priority screw (1st)
(優先ネジ (1) )

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