Ic Block Diagrams - Sony XR-2750 Service Manual

• IC Block Diagrams

IC301 CXA2509AQ-T4
30 29 28 27
120µ/
70µ
– +
PBFB1
31
X1
32
PBRIN1
F2
33
PBREF1
PBFIN1 34
VCT 35
VCT
PBGND
36
+
37
PBFIN2
F1
PBREF2 38
X1
PBRIN2 39
PBFB2 40
120µ/
70µ
1 2 3 4 5
IC401 LC75373ED
33 32
+
+
–
–
34
LSELO
L4 35
L3 36
L2 37
+
L1
38 –
VDD 39
–
R1
40
+
R2 41
R3 42
R4 43
RSELO 44
–
–
+
+
1 2
26 25 24 23 22 21
NR
T2
+ –
NR BIAS
MS
MODE
TAPE/AUX
TAPE EQ
NR
MODE
FWD/RVS
VCC
LPF
+
DETECT
–
F3
OFF/B
T1
NR
6 7 8 9 10
31 30 29 28 27 26
–
+
–
+
–
+
DECODER LATCH
+
–
+
–
+
–
3 4 5 6 7 8
IC361 MM1322XFBE
GND
IN2
VCC
20 MSMODE
19 DRSW
IN1
18 TAPESW
17 INSW
16 NRSW
15 NC
MS ON/
OFF
14 MSOUT
13 DGND
12 MSTC
11 FF
25 24 23
+
–
+
–
SHIFT
CONTROL
REGISTER
–
+
–
+
9 10 11
– 37 –
1
2
3
4
22 LFIN
21 LFOUT
LROUT
20
19
VREF
18 CE
17 DI
16
CL
15
VSS
14 RROUT
13 RFOUT
12 RFIN
8 OUT2
7
VS
6 OUT1
5
GND