Yamaha SPX990 Service Manual page 8

SPX990
SPX990
3
Rear Panel
Assembly Removal
3-1
Remove
the top cover, {see procedure
1)
3-2
Remove
the
two
(2)
screws marked
[601. (Fig. 4)
3-3
Remove
the
two
(2)
screws marked
[90]
and
the
two
(2)
screws marked
[127], (Fig
4)
3-
4
Remove
the four
(4)
screws marked
[701,
then the
rear panel
assembly
can be removed.
(Fig. 5)
*
This
will give
you
access
to the
AD
circuit
board.
4
AD
Circuit
Board Removal
4-
1
Remove
the
top
cover, (see procedure
1)
4-2
Remove
the rear pane! assembly,
(see procedure
3)
*
This
will
give
you
access
to the
AD
circuit board.
4-3
Remove
the eight
(8)
screws marked
|50cJ
and
the
two
(2)
screws
marked
[50d],
(Fig. 4)
4-4
Remove
the
six
(6)
hexagonal
nuts
marked
150e),
then the
AD
circuit
board can be removed.
(Fig. 4)
3.
U
3-1
h
3-
2
[60]<7)T^'>'24;^
(1:^14)
(gl4)
-To
ims)
»
UT'''-T'/l'Assyr^M".h.
AD->—
Vcn'<9
—
-y
sfo
4.
ADx"
h<7)i1-LS'
4-
1
h
4-2 U
r^'TWt-Assy^HL
w
U
r
-
T
A
Assy
,AD>~
\-
9
) fllij
4-3
[50c](7)4-->'8?t^i:[50d]co:f.->'2-4-^
i'f-L
^ to
(fS14)
4-4
[50e](7)t»Atfit
V
F6[iAl^'/K.
ADv-l
?-
5^1-Lito
(1-14)
[50cj;Bonding
Head Screw
v)
3
0X8 ZMC2BL(VP157800)
(50d]:Bind
Head Tapping Screw-P
(4-^
W
>
K
P
-f
h)
A3 0X10 ZMC2BL
(VP733500)
[50e]:Hexagonal Nut y h) 9
0
FNM33G(LX200060)
(60]:Bind
Head Tapping Sorew-B
(-F/'C-f
>
K
B
S'
<
h)
A3 0X8 ZMC2BL
(VP157000)
[90]:Bind
Head Tapping Screw-B
(-f/^-f
K
B
5
-f
F)
A3 0X8 ZMC2BL(VP157000)
[127]:Bind
Head
Tapping Screw-8
F)
A3 0X8 ZMC2BL(VP1
57000)
{70]:Bind
Head
Tapping Screw-C (4-/^4
F'C
S'
-t
F) A3 0X6
ZMC2BL
{VP157200)
{100]:Bif»d
Head
Tapping Screw-C (4-/<4
H
C
S'
-f
F)
A3 0X6 ZMC2BL (VP157200)
11