Read Sony ICD-70 Service Manual online
3-4.
IC BLOCK DIAGRAMS
— 15 —
1
2
3
4
8
7
6
5
GND
AMP OUT
GAIN CONT
INPUT
VCC
OUTPUT2
OUTPUT1
RECOVERY
TIME CAP
TIME CAP
IC140 NJM2072M
–
+
+
–
+
+
BIAS
#B
#A
4k
Ω
4k
Ω
50k
Ω
50k
Ω
125k
Ω
4
3
2
7
1
8
5
6
V+
V OUT1
V OUT2
–V IN
+V IN
+V REF
GND
CD
IC105 NJM2113V-TE2
–
+
Thermal
Protection
Bandgap
Reference
V IN
V OUT
NOISE BYPASS
CONT
GND
5
4
3
1
2
IC501 NJM2370U33-TE2
1
2
3
4
5
6
VDD
XT
XT
INH
Qo
Vss
RUP
IC704 XC2141C21AMR
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