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Sanyo DC-PT80 Service Manual page 22

Dvd micro system
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IC BLOCK DIAGRAM & DESCRIPTION
IC172 AT24C02N(P-ROM)
8
Vcc
GND
4
WP
7
SCL
6
SDA
5
A
3
2
2
A
1
A
1
0
IC231 LA1844ML(AM/FM AMP.)
24
23
22
ALC
AM
AM
MIX
OSC
BUFF
LEVEL
DET
S-CURVE
FM
FM
IF
DET
REG
2
3
1
START
STOP
LOGIC
LOAD
DEVICE
ADDRESS
COMPARATOR
R/W
D
IN
D
OUT
21
20
19
18
AM
RF.AMP
AGC
AM
AM
DET
IF
AM/FM
IF
COMP
BUFF
TUNING
DRIVE
GND
4
5
6
7
SERIAL
CONTROL
LOGIC
COMP
LOAD
INC
DATA WORD
ADDR/COUNTER
Y DEC
17
16
15
14
PILOT
DECODER
ANTI-BIRDIE
CANCEL
P-DET
STEREO
SW
VCO
FF
FF
FF
304kHz
38k
19k
19k
2
VCC
8
9
10
11
- 21 -
EN
H,V. PUMP/TIMING
DATA RECOVERY
2
E PROM
SERIAL MUX
D
/ACK
OUT
LOGIC
13
PILOT
DET
12

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