A
B
C
D
E
F
G
H
1
2
3
4
5
6
GX-505/GX-505VCD
■
PRINTED CIRCUIT BOARD (Foil side)
38
39
Point
u
(Pin12 of IC4)
V : 2V/div
H : 0.1
µ
sec/div
DC range
1 : 1 probe
Point
y
(Pin20 of IC2)
V : 2V/div
H : 0.1
µ
sec/div
DC range
1 : 1 probe
0V
0V
TUL
E
TUR
12V
TUMUTE
TUCE
TUDATA
TUCLK
TUDO
STAD
STEIN
TUNER P.C.B.
(Lead Type Device)
16
30
11
5
W1
AM
GND
FM
FR
OM:
INPUT(1)
TUNER P.C.B.
(Surface Mount Device)
16
30
11
5
9
16
8
1
1
1
10
11
20
12
13
24
u
y
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
Ref. No.
Location
D1
D2
D2
D2
D3
D2
D4
D2
D5
E3
D6
D2
D7
D2
D8
D2
D9
D2
D10
D2
D11
E4
Ref. No.
Location
IC1
A3
IC2
E3
IC3
D2
IC4
E2
●
Semiconductor Location
Ref. No.
Location
Q1
B4
Q2
B4
Q3
B3
Q4
B2
