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Schemetic Diagram
Model No:AMI-V225M/325M
Ass'y Name: TUNER 2BAND FTZ
MAIN GND
2
1
2
3
3
21
20
19
12
2
VSS VT
VT-IN FM/AM IF N.C
14
N.C
AM OSC
1/2
15
MUTE
11
FM OSC
16
9
ST/MO
18
PD
10
1
4
7
10
12
13
13
5
8
14
6
9
11
14
6 5
4
9 8 7
11
12
TOKO
CC104 : 12pF
L101
KWANGSUNG
CC104 : 15pF
TOKO
: RBW07VB-K5024
KWANGSUNG : KSNT-213M-1
17
VDD
AM/FM
7
IF REQ
8
DO
6
CL
5
C B
I/F
DI
4
CE
3
13
FM
10
X-IN
1
X-OUT
22
AM/FM
IF
S-CURVE
BUFF
304KHz
19K
19K 0
- 11 -
Name
Pin No.
1
2
3
4
5
6
7
8
9
10
Vtg(V)
#1
#2
#3
2.1 4.8
2.1
2.1
GND
2.9
4.8
3.5
IC201
Pin No. 13
14
15
16
17
18
19
20
21
22
23
Vtg(V)
1.8
1.8
2.1 2.1 2.1 2.1 #4
#5
2.1 2.1
4.8 3.5
#1 : SD ON(0V)
#3 : NORMAL(V=< 0.5V )
#4 : FM(0V), AM(1.5V)
OTHERWISE(5V)
MUTE(1.4V=<V=<2.2V)
#5 : FM(0.2V), AM(0.9V)
SEEK(V>=3.5V)
#2 : STEREO ON(0V)
OTHERWISE(5V)
Name
Pin No.
1
2
3
4
5
6
7
8
9
10
Vtg(V)
2.5 N.C
0
0
0
VCC
#1
#2
#3
#4
IC202
Pin No.
12
13
14
15
16
17
18
19
20
21
22
Vtg(V)
0
VCC
N.C
#5
#6
VCC
1
1
#7
GND 2.5
#1 : FM(3.7), AM(0)
#2 : ON TUNING OPERATION(VCC)
#3 : FM(3.7), AM(0)
#4 : FM(0), AM(12)
#5 : FM(0), AM(2.4)
#6 : FM(2.4), AM(0)
#7 : VT
Name
Q003
Q104
IC205
REMARK
Q001
E(1)
0
12
0
12
Vtg(V)
C(2)
0
12
0
GND
BASIC : FM
B(3)
0
0
12
5
CC214
CC215
JW204
JW205
L201
L202 R214 R215
FTZ
X
X
X
X
O
O
O
CE
O
O
O
O
X
X
X
R217
R218 R219 R220
JW213
CC203 R221
FTZ
JW
JW
X
X
O
560pF
56K
CE
O
O
O
O
X
820pF
56K
FTZ OPTION
11 12
3.8
24
11
0
O
X
CF002
MJ-A
MS3-A
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