Aiwa CSD-XD55 Service Manual page 36

CSD-XD55
– MAIN Board –
IC803 CAT24WC02JI-1.8-TE13
1
GND
7BIT
ADDRESS
DECODER
GND
2
GND
3
HIGH VOLTAGE
GND 4
OCCURENCE CIRCUIT
IC301 PT2257-S
L-IN
8
VR 2
VOL AMP 2
VOL AMP 1
VR 1
1
R-IN
– TC Board –
IC301 TA2068N
AGC 1
L.PO 2
L.NF 3
REC
AMP1
L.RO 4
26dB
L.IN 5
REF 6
REF
AMP
GND 7
2.1
REC
R.IN 8
AMP2
R.RO 9
26dB
R.NF 10
NAB
AMP2
11
R.PO
MIC
AMP1
12
MIC.NF
36
1K BIT EEPROM ARRAY
SLAVE • WORD
ADDRESS
7BIT
REGISTER
START STOP
CONTROL CIRCUIT
POWER SUPPLY
VOLTAGE DETECTION
L-OUT VDD CLK
7 6 5
VREF
LOGIC
CONTROL
REF AMP
2 3 4
R-OUT GND DATA
LINE
NAB
AMP1
TAPE
BUF AMP
RADIO
A1
MONITOR
BUF AMP
MUTE
B1
ON
ON
BUF AMP
B2
MUTE
RADIO
TAPE
BUF AMP LINE
A2
8
VDD
8BIT
DATA
7
GND
REGISTER
6 SCL
ACK
SDA
5
L.LIN
24
23 MIC I/EX
22
L.RAD
21 REC
AMP
20
L.LO
7dB
LOGIC
19 VCC
7dB
18 R.LO
MONITOR
AMP
17 LINE
16 R.RAD
15 TAPE
14 R.LIN
13
MIC