Sony XR-1750, Service Manual

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IC301 CXA2509AQ-T4
•
IC Block Diagrams
+
–
+
–
+ –
+ –
+ –
1 2
3
4
5 6 7 8 9 10
20
19
18
17
16
15
14
13
12
11
21 22 23 26 27 28 29 30
31
32
33
34
37
38
39
40
24 25
PBFB2
PBRIN2
PBREF2
PBFIN2
35
36 PBGND
VCT
PBFIN1
PBREF1
PBRIN1
PBFB1
PBEQ2
PBOUT2
VCC
TAPEIN2
AUXIN2
MSLPF
LINEOUT2
TCH2
NC
PLAY
FF
MSTC
DGND
MSOUT
NC
NRSW
INSW
TAPESW
MSMODE
DRSW
MSSW NC TCH1 LINEOUT1 DIREF AUXIN1 TAPEIN1 PBEQ1 PBOUT1 GND
F2
120
µ
/
70
µ
X1
X1
VCT
+
F1
120
µ
/
70
µ
NR
OFF/B
F3
LPF
VCC
DETECT
MS ON/
OFF
NR
MODE
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
NR
MS
MODE
OFF/B
T2
T1
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
DECODER LATCH
SHIFT
REGISTER
CONTROL
–
+
+
–
1
2 3 4 5 6 7 8 9 10
20
19
18
17
16
15
14
13
12
11
21
22
23 24 25 26 27 28 29 30 31 32 33
34
35
36
37
38
39
40
41
42
43
44
LSELO
L4
L3
L2
L1
VDD
R1
R2
R3
R4
RSELO
RVRIN
RCOM
RT1 RT2 RT3
RTOUT
RSIN
RS1 RS2 RS3
RSOUT
RFIN
RFOUT
RROUT
VSS
CL
DI
CE
VREF
LROUT
LFOUT
LFIN
LSOUT
LS3 LS2 LS1 LSIN LTOUT LT3 LT2 LT1 LCOM LVRIN
1
2
3
4
5
6
7
8 OUT2
VS
OUT1
GND
IN1
VCC
IN2
GND
CONTROL CIRCUIT
IC401 LC75373ED
IC361 MM1322XFBE