Daewoo AMI-V225M - Tuner

Schemetic Diagram
- 11 -
Model No:AMI-V225M/325M
Ass'y Name: TUNER 2BAND FTZ
MAIN GND
3
14
13
1
2
10
6 5 4 9 8 7 11 12
6
5
3
2
41 7
9
8
13
11 14
1210
L101
21 20
19
11
15
14
2
12
17
4
5
7
8
6
18
9
16
13
3
10
22
1
VSS VT
N.C
MUTE
AM OSC
1/2
VT-IN FM/AM IF N.C VDD
IF REQ
DO
DI
CL
C B
I/F
AM/FM
PD
FM OSC
ST/MO
X-OUT
X-IN
FM
CE
Vtg(V) 1.81.8
IC201
Pin No.
13 14
Name
Pin No.
Vtg(V)
1 2
2.1 4.8
#1 : SD ON(0V)
OTHERWISE(5V)
#2 : STEREO ON(0V)
OTHERWISE(5V)
15
3
2.1
4
2.1
5 6 7
GND
16 17 18 19
#2#1
2.1
2.1 2.1 2.1 #4
#3 : NORMAL(V=< 0.5V )
MUTE(1.4V=<V=<2.2V)
SEEK(V>=3.5V)
8 9 10 11 12
2.9
20 21 22 23 24
#3
4.8 3.5 3.8
2.1 2.1#5 4.8 3.5
#4 : FM(0V), AM(1.5V)
#5 : FM(0.2V), AM(0.9V)
CC104 : 15pF
CC104 : 12pF
KWANGSUNG : KSNT-213M-1
TOKO : RBW07VB-K5024
KWANGSUNG
TOKO
S-CURVE
AM/FM
IF
BUFF
304KHz
19K 19K 0
FTZ
CE
X
O
CC214
R217
CE
JW
O
FTZ
FTZ OPTION
#5 : FM(0), AM(2.4)
#7 : VT
IC202
Pin No.
Vtg(V)
Pin No.
Name
Vtg(V)
#1 : FM(3.7), AM(0)
#3 : FM(3.7), AM(0)
2.5
N.C
12
0
1 2
VCC
13
Vtg(V)
Name
E(1)
B(3)
C(2)
#1
18
1
7
VCC
#6#5
00
VCC
17
#4 : FM(0), AM(12)
#2 : ON TUNING OPERATION(VCC)
14
N.C
3
0
4 5 6
15 16
Q104
#6 : FM(2.4), AM(0)
12
Q001
0
Q003
12
0
0
0
0
0
12
111098
19 20 21 22
GND 2.5
#4
1
#2
#7
#3 0
12
IC205
GND
REMARK
BASIC : FM
5
X
O
X
O
X
O
R218 R219 R220
JW205JW204CC215
JW213
JW
O
X
O
X
O
O
X
L202 R214 R215L201
X
O O
X
O
X
O
X
CC203 R221
56K820pF
CF002
MS3-A
MJ-A560pF 56K
www.rtv-horvat-dj.hr