Yamaha Disklavier Silent Mark III Service Manual page 23

24. OTLT Circuit Board
OUTPUT Circuit Board
Power Switch Assembly
24-1 Remove the eight (8) screws marked [22GB]. The outlet
cover can then be removed. (Photo.17)
24-2 OTLT Circuit Board (U,APTW models):
Remove the six (6) screws marked [21GC] and the two
(2) screws marked [23G]. The OTLT circuit board can
then be removed. (Fig.13)
OTLT Circuit Board (E,APTH,APHK models):
Remove the six (6) screws marked [21GC] and the two
(2) screws marked [23G]. The OTLT circuit board can
then be removed. (Fig.14)
Outlet assembly
[22GB]
[22GB]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (EP630210)
(Photo.17)
Outlet assembly (U,APTW models)
Front view
[23G]
OTLT
[21GC]
[22GD]
[20G]
OUTPUT
Power switch assembly
[20G]: Hexagonal Nut 12.0X14X2 MFZN2BL (VB508600)
[21GC]: Bind Head Tapping Screw-P 3.0X6 MFZN2BL (VA819100)
[22GD]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (EP630210)
[23G]: Bind Head Tapping Screw-C 3.0X6 MFZN2Y (EP630390)
(Time required: About 5 minutes)
(Time required: About 4 minutes)
(Time required: About 3 minutes)
Outlet cover
Right side view
MAINS
(Fig.13)
OTLT Circuit Board (B model):
Remove the two (2) screws marked [21GC], the screw
marked [22GC] and the two (2) screws marked [23G].
The OTLT circuit board can then be removed. (Fig.15)
24-3 OUTPUT Circuit Board (All models):
Remove the two (2) hexagonal nuts marked [20G]. The
OUTPUT circuit board can then be removed. (Fig.13,14,15)
24-4 Power Switch Assembly (U,APTW models):
Remove the two (2) screws marked [22GD]. The power
switch assembly can then be removed. (Fig.13)
Power Switch Assembly (E,B,APTH,APHK models):
Remove the two (2) screws marked [25G]. The power
switch assembly can then be removed. (Fig.14,15)
Outlet assembly (E,APTH,APHK models)
Front view
[23G]
OTLT
[21GC]
[25G]
[20G]
OUTPUT
Power switch assembly
[20G]: Hexagonal Nut 12.0X14X2 MFZN2BL (VB508600)
[21GC]: Bind Head Tapping Screw-P 3.0X6 MFZN2BL (VA819100)
[23G]: Bind Head Tapping Screw-C 3.0X6 MFZN2Y (EP630390)
[25G]: Bind Head Screw 3.0X20 MFZN2BL (EG330240)
Outlet assembly (B model)
Front view
[23G]
OTLT
[21GC]
[25G]
[20G]
OUTPUT
Power switch assembly
[20G]: Hexagonal Nut 12.0X14X2 MFZN2BL (VB508600)
[21GC]: Bind Head Tapping Screw-P 3.0X6 MFZN2BL (VA819100)
[22GC]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (EP630210)
[23G]: Bind Head Tapping Screw-C 3.0X6 MFZN2Y (EP630390)
[25G]: Bind Head Screw 3.0X20 MFZN2BL (EG330240)
DU1A
Right side view
MAINS
(Fig.14)
Right side view
[22GC]
MAINS
(Fig.15)
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