Yamaha GX-700 Service Manual page 39

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A
B
PRINTED CIRCUIT BOARD (Foil side)
1
P.C.B. TUNER
(Lead Type Device)
2
3
4
AM
GND
FM
5
6
C
D
(Surface Mount Device)
TUL
E
TUR
12V
TUMUTE
TUCE
TUDATA
TUCLK
TUDO
STAD
STEIN
40
E
P.C.B. TUNER
u
y
F
G
GX-700/GX-700VCD
CIRCUIT CHANGES BY MARKET.
U, C, R, T, L, A
B, G
J
X3
X
X
O
X4
X
O
X
IC3
X
X
O
IC4
X
O
X
Q4
X
X
O
D6 ~ 8, 10
X
X
O
L7 ~ 9
X
O
X
C68, 71 ~ 74
X
O
X
C46, 52 ~ 54
X
X
O
C29
O
O
X
C42 ~ 51, 55, 56
X
X
O
C67, 69, 70
X
O
X
R33 ~ 38
X
X
O
R54
X
O
X
R25
O
O
X
R39
X
X
O
J21
X
O
X
J1, 40, 44
X
X
O
O : USED
X : NOT USED
Point y (Pin20 of IC2)
H : 0.1 µsec/div
V : 2V/div
DC range
1 : 1 probe
0V
Point u (Pin12 of IC4)
H : 0.1 µsec/div
V : 2V/div
DC range
1 : 1 probe
0V
H
41

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