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AVR300
MAIN BOARD
U102: P89C669FA
MAIN BOARD
U103: 24C08
VCC
GND
WP
SCL
SDA
A 2
A 1
A 0
MULTI-CH BOARD
U406-U417: NJM5532M
OUTPUT A
1
INVERTING A
2
- +
NON INVERTING A
3
V-
4
SURROUND SOUND RECEIVER
8
4
7
6
START
STOP
5
LOGIC
LOAD
DEVICE
ADDRESS
COMPARATOR
3
2
R/W
1
D
IN
D
OUT
8 V+
7
OUTPUT B
A
B
+
-
6
INVERTING B
5
NON INVERTING B
SERIAL
EN
CONTROL
H.V. PUMP/TIMING
LOGIC
COMP
DATA RECOVERY
LOAD
INC
DATA WORD
ADDR/COUNTER
Y DEC
RS232 BOARD
U204: MAX232D
- 44 -
EEPROM
SERIAL MUX
D
/ACK
OUT
LOGIC
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2OUT
7
R2IN
8
V
16
CC
GND
15
T1OUT
14
R1IN
13
R1OUT
12
T1IN
11
T2IN
10
R2OUT
9
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