Disassembly Procedure - Yamaha F-20 Service Manual
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Also See for F-20:
- Owner's manual (7 pages) ,
- Maintenance manual (130 pages) ,
- Owner's manual (110 pages)
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DISASSEMBLY PROCEDURE
1.
Pre-Main Unit (Time required: about 1 min)
1-1
Remove the speaker wires.
1-2
Remove the four (4) screws marked [30]. The pre-main unit can then be removed by sliding it backward. (Fig.1)
2.
Speaker (Time required: about 1 min)
2-1
Remove the four (4) screws marked [A]. The back board can then be removed. (Fig.1)
2-2
Remove the four (4) screws marked [B]. The speaker can then be removed. (Fig.1)
3.
MAIN 1/2 Circuit Board (Time required: about 3 min)
3-1
Remove the pre-main unit. (See procedure 1)
3-2
Remove the six (6) knobs marked [P100] and the six (6) hexagonal nuts marked [C]. (Fig.5)
3-3
Remove the hexagonal nuts marked [A120] and the hexagonal nuts marked [A140]. (Fig.5)
3-4
Push the hooks of the spacer support (at the arrow symbol area of illustration) with a needle-nose plier to unlock.
The Main 1/2 circuit board can then be removed. (Fig.2)
[30]: Truss Head Screw 4.0X25 MFZN2BL (VN347600)
Needle Nose Plier
Needle Nose Plier
Needle Nose Plier
[P40]
[P40]
[P40]
MAIN1/2 Circuit Board
MAIN1/2 Circuit Board
MAIN1/2 Circuit Board
(Fig. 2)
[30] x 4
Pre-Main Unit
Pre-Main Unit
[A]
[A]: Bind Head Tapping Screw 4.0X25 FCRM3-BL (EI340256)
[B]: Bind Head Screw 4.0X20 ZMC2BL (VB403600)
(Fig. 1)
[B]
Speaker
Back Board
F-20
5
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