Yamaha SY77 Service Manual page 12

SY77
12.
Wheel Assembly
(refer
to
fig. 9)
12-1.
Remove
the
Bottom
cover assembly,
(see
procedure
1.)
1
2-2.
After the
six
(6)
screws
®
(3.0 x
8 bonding
head
tapping screw) have been removed,.
the
Wheel assembly can be removed.
12.
^'f-VPAss'y<D9fL:5
(ia9#fiS)
12
-
1
.
12-2.
®0^i?64;(3 X
8
>rB
h
Ifig.
9)
13. Rotary
Encoder Knob
(Data Entry)
13-1.
Remove
the
Bottom cover assembly,
(see
procedure
1.)
13-2.
Remove
the
DM1
and
DM2
circuit
boards,
(see
procedures
2 and
3.)
13-3.
Remove
the
PS
circuit
board, (see
procedure
4.)
13-4,
Remove
the
JKAN
circuit
board, (see proce-
dure
8.1
13-5.
Remove
the
Keyboard assembly,
(see proce-
dure
9.)
13-6.
Remove
the
PNC
circuit
board, (see proce-
dure
10.)
1
3-7.
Pull
out the Rotary
encoder knob on
the
PNC
circuit
board.
13.
n-^ij
b
13-1.
5ttiAss'y5-n-Lito
13-2.
DM1 iDM2
•>-
b
S-n-LJ-f.
<2i:3*n#,'!fl)
13-3.
PSx-
13-4.
JKANi^-
b
S-il-LSt,
(8«#,a?)
13-5.
a5SAss'y5-51-LJi-o
13-6.
pNCv-bs-i^ui-r.
(iois:#,iffi)
13-7.
PNCx-b!>*fe, D-#'
iJ-x>3~r'7-7'5
ۥ
SY77