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Yamaha R-70 Service Manual page 9

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A
(Pattern side)
•Main circuit board (1/5)
11
...,
0
3
3:
0
()
OJ
0
0
...,
a.
2
,......,
(JJ
~
31
fT1
~
0
::0
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c
"'O
1a
d(/)
z
ITI
I
0
0
~
z
4
l
(
N
I
~~ -~
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,
:
:
rJlC449
+""
j
L-J''I
·
~
-I
0
s:
0
::J
()
OJ
0
51
0
...,
a.
,......,
(JJ
6
B
11
...,
0
3
3:
0
:::J
()
OJ
0
0
...,
a.
.......
(JJ
r
-I
0
3:
0
::::>
()
OJ
0
0
...,
a.
,......,
~
l
c
D
To Key
C.
Board
From Key C. Board
From Tuner C. Board { I )
E
F
To Main C.Board {3)
From Tuner C.Board (2)
G
H
R-70/R-70M
~
z
0
""O
~
c
~ ~
i;!
11
~ ~
CD
""O
::0
,,,
fT1
(')
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0
c
-t
-t
l>
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};!
di
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c
-t
.
jij;N~~.-JTR428l
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ai~~·~Jt~~~
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·
~
[
-
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· -
I
-
-
N
-
--
,
ij
II
fl
t
~1
~~~~
_-- :
J.,.
2
.,
wa
--:-"
~
-
..
··'
J
!!
~=
·
,
·
_, . ,
_
. .
,
. . . .
..
-
·
l
ul
l
To Main C. Board (2)
From Power Transformer
@
CD
®
(/)
""O
,,,
l>
::;i;:
,,,
::u
@ (/)
l>
®
The following parts
and values differ from each
model, so
refer
to
the corresponding
column.
C401 "'406
C513.514
C529, 531,
533
535.537
J641
D
A
R
u.
c.
LRI
G
Set
8

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