36
CSD-XD55
IC301 PT2257-S
– MAIN Board –
IC803 CAT24WC02JI-1.8-TE13
GND
GND
GND
GND
VDD
GND
SCL
SDA
1K BIT EEPROM ARRAY
ADDRESS
DECODER
HIGH VOLTAGE
OCCURENCE CIRCUIT
POWER SUPPLY
VOLTAGE DETECTION
DATA
REGISTER
SLAVE • WORD
ADDRESS
REGISTER
CONTROL CIRCUIT
7
6
5
8
1
2
3
4
7BIT
8BIT
7BIT
START
STOP
ACK
VR 2
VR 1
R-IN
R-OUT
GND
DATA
L-IN
L-OUT
VDD
CLK
7
2
3
4
8
1
REF AMP
VOL AMP 2
VOL AMP 1
6
LOGIC
CONTROL
5
VREF
– TC Board –
IC301 TA2068N
1
2
3
6
9
10
11
12
8
7
4
5
22
TAPE
TAPE
TAPE
BUF AMP
A1
BUF AMP
A2
NAB
AMP1
NAB
AMP2
23
24
15
14
13
21
20
17
16
RADIO
BUF AMP
B1
BUF AMP
B2
MUTE
MUTE
ON
ON
ON
7dB
26dB
26dB
MONITOR
AMP
LOGIC
18
19
MUTE
7dB
MONITOR
AMP
LINE
TAPE
RADIO
LINE
ALC2
ALC1
DET
REC
AMP1
REC
AMP2
2.1
REF
AMP
MIC
AMP1
VCC
R.LO
LINE
R.RAD
TAPE
R.LIN
MIC
L.LO
REC
L.RAD
MIC I/EX
L.LIN
AGC
L.PO
L.NF
L.RO
L.IN
REF
GND
R.IN
R.RO
R.NF
R.PO
MIC.NF
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