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• IC Block Diagrams – MAIN Board –
IC301 CXA2509AQ-T4
IC331 LC75373ED
IC351 MM1322XFBE
+
–
+
–
+
–
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–
+
–
1
2
3
4
5 6 7 8 9 10
20
19
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11
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31
32
33
34
37
38
39
40
2425
PBFB1
PBRIN1
PBREF1
PBFIN1
35
36
PBGND
VCT
PBFIN2
PBREF2
PBRIN2
PBFB2
PBEQ1
PBOUT1
VCC
TAPEIN1
AUXIN1
MSLPF
LINEOUT1
NC
NC
G2FB
G1FB
MSTC
DGND
MSOUT
NC
NC
INSW
TAPESW
MSMODE
DRSW
MSSW
NC
NC
LINEOUT2
DIREF
AUXIN2
TAPEIN2
PBEQ2
PBOUT2
GND
F2
120µ/70µ
X1
X1
VCT
+
F1
120µ/70µ
24dB
F3
LPF
VCC
DETECT
MS ON/
OFF
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
24dB
MS
MODE
T2
T1
1
2
3
4
5
6
7
8
OUT2
VS
OUT1
GND
IN1
VCC
IN2
GND
CONTROL CIRCUIT
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
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
2324252627282930313233
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