Tuner(Ami-329Lw/Rw) - Daewoo AMI-329LW/RW Service Manual

Schematic Diagram
Model : AMI-329LW/RW
Ass'y Name : TUNER
MAIN GND
21 20 19
VSS VT VT-IN FM/AM IF N.C
14
N.C
AM OSC
15
MUTE
11
16 FM OSC
9
ST/MO
PD
18
2
10
1
10 12
1 4 7
13
2 5 8 13
14
3 6 9 11 14
3
6 5 4 9 8 7 11 12
TOKO CC104 : 12pF
L101
KWANGSUNG CC104 : 15pF
TOKO : RBW07VB-K5024
KWANGSUNG : KSNT-213M-1
12 2 17
VDD
AM/FM 7
IF REQ 8
DO 6
1/2 CL 5
C B
I/F DI 4
CE 3
13
FM 10
X-IN
1
22
X-OUT
AM/FM
IF
S-CURVE BUFF
304KHz 19K 19K 0
13
Name
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12
Vtg(V) #1 #2
2.1 4.8 2.1 2.1 GND 2.9 4.8 #3 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)
MUTE(1.4V=<V=<2.2V)
OTHERWISE(5V) #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 11
Vtg(V) 2.5 N.C 0 0 0 VCC #1 #2 #3 #4 0
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
FTZ OPTION
Name Q001 Q003 Q104 IC205 REMARK
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 CF002
FTZ 560pF 56K
JW JW X X O
CE 820pF 56K MS3-A
O O O O X
RDS OPTION
3.8
24
O
X
MJ-A