Sony CFD-S250 Service Manual page 35

IC803 CAT24WC02JI-1.8-TE13 (MAIN Board)
1
A0
7BIT
ADDRESS
DECODER
A1
2
A2
3
CONTROL CIRCUIT
HIGH VOLTAGE
GND
4
OCCURENCE CIRCUIT
IC301 PT2257 (MAIN Board)
VIN2 VOUT2
8 7
VR 2
VOL AMP 2
VOL AMP 1
REF AMP
VR 1
1 2
VIN1 VOUT1
IC301 TA2068N (TC Board)
AGC 1
2
L.PO
NAB
AMP1
BUF AMP
L.NF 3
A1
REC
AMP1
L.RO
4
26dB
L.IN 5
REF 6
REF
AMP
7
GND
2.1
REC
R.IN 8
AMP2
R.RO 9
26dB
R.NF
10
NAB
AMP2
R.PO 11
BUF AMP
MIC
A2
AMP1
12
MIC.NF
1K BIT EEPROM ARRAY
8BIT
SLAVE • WORD
DATA
ADDRESS
7BIT
REGISTER
REGISTER
START STOP
ACK
POWER SUPPLY
VOLTAGE DETECTION
VCC CLOCK
6 5
VREF
LOGIC
CONTROL
3 4
GND DATA
LINE
TAPE
RADIO
MONITOR
BUF AMP
MUTE
AMP
B1
7dB
ON
LOGIC
ON
7dB
BUF AMP
B2
MONITOR
MUTE
AMP
RADIO
TAPE
LINE
CFD-S250
8 VCC
7 WP
6
SCL
SDA
5
L.RAD
24
MIC I/EX
23
22 L.LINE
21 REC
20
L.LO
19 VCC
18 R.LO
17
LINE
R.LINE
16
15 TAPE
14
R.RAD
13
MIC
35