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Yamaha BBT500H Service Manual page 7

Bass amplifier
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DISASSEMBLY PROCEDURE
1.
Top Cover
(Time required: About 4 minutes)
1-1.
Remove the two (2) screws marked [110]. The side
pad can then be removed. (Fig. 1)
1-2.
Remove the four (4) screws marked [60a] and the
two (2) screws marked [70] (Fig. 1)
*Remove the parts on the other side in the same
way.
1-3.
Remove the six (6) screws marked [60b] and the
five (5) screws marked [80]. (Fig. 2)
1-4.
Remove the top cover. (Fig. 2)
〈 Side View 〉
[110]
[60a]
[60]:
Bind Head Tapping Screw-B
3.0x6 MFZN2BL (EP600230)
(+バインド小ネジ)
[70]:
Bind Head Screw
4.0x6 MFZN2BL (EG340340)
[110]: Bind Head Screw
(+バインド小ネジ)
4.0x16 MFZN2BL (EG340110)
Fig.1 (図1)
2.
Front Assembly
(Time required: About 5 minutes)
2-1.
Remove the top cover. (See procedure 1.)
2-2.
Remove the three (3) screws marked [60c]. The front
assembly can then be removed. (Fig. 3)
〈 Bottom View 〉
(分解手順)
[70]
Side Pad(サイドパッド)
(+バインドBタイト)
Front Assembly(フロントAss'y)
[60]:
Bind Head Tapping Screw-B
3.0x6 MFZN2BL (EP600230)
Fig.3 (図3)
1.
トップカバー (所要時間: 約 4 分)
1-1
[110]のネジ 2 本を外し、サイドパッドを外します。
(図 1)
1-2
[60a]のネジ 4 本と、 [70]のネジ 2 本を外します。
(図 1)
反対側も同様に外します。
1-3
[60b]のネジ 6 本と、 [80]のネジ 5 本を外します。
(図 2)
1-4
トップカバーを外します。 (図 2)
〈 Top View 〉
Top Cover
(トップカバー)
[60]:
Bind Head Tapping Screw-B
3.0x6 MFZN2BL (EP600230)
[80]:
Bind Head Screw
3.0x8 MFZN2BL (VA295800)
2.
フロント Ass'y  
2-1
トップカバーを外します。 (1 項参照)
2-2
[60c]のネジ3本を外し、 フロントAss'yを外します。
(図 3)
[60c]
(+バインドBタイト)
[60b]
[60b]
[80]
(+バインドBタイト)
(+バインド小ネジ)
Fig.2 (図2)
(所要時間: 約 5 分)
BBT500H
[60b]
7

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