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3 7 63 1515 0
IC1 (MAIN BOARD) LA1833N
24
ALC
OSC
BUFF
LEVEL
DET
FM
IF
1
2
TE
L 13942296513
IC2 (MAIN BOARD) LC72136
22
21
REFERENCE
DIVIDER
www
1
2
3 4
.
58
http://www.xiaoyu163.com
23
22
21
20
AM
AM
AM
RF.AM
MIX
AGC
AM
IF
AM/FM
COMP
IF
S-CURVE
TUNING
DRIVE
FM
DET
REG
GND
3
4
5
6
20
19
18
17
16
1/2
C2B
DATA SHIFT REGISTER
I/F
5
6
x
ao
y
i
http://www.xiaoyu163.com
8
19
18
17
DECODER
ANTI-BIRDIE
P-DET
AM
Ø
DET
VCO
304kHz
VOC
9
7
8
Q Q
3
6 7
1 3
15
14 13
12
LATCH
8 9
7
10 11
u163
.
2 9
9 4
2 8
16
15
13
14
PILOT
CANCEL
STEREO
FF
FF
FF
PILOT
38k
19k<0
19k<π/2
10
11
12
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
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