XR-3750
6-4. SCHEMATIC DIAGRAM  MAIN Section (1/2)  " See page 32 for Waveforms. " See page 31 for IC Block Diagrams.
 23   24 
XR-3750
6-5. SCHEMATIC DIAGRAM  MAIN Section (2/2)  " See page 31 for IC Block Diagrams.
(Page 29)
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6-7. SCHEMATIC DIAGRAM  PANEL Section 
(Page 26)
 29   30 
" IC Block Diagrams IC351 MM1322XFBE " Waveform
 MAIN Section   MAIN Section 
IC301 CXA2509AQ-T4 1
GND
1 IC501 &Å› (X-IN)
8 OUT2
7 VS
IN2 2
30 29 28 27 26 25 24 23 22 21
24dB
VCC 3
120µ/70µ
3.2 Vp-p
T2
+ 
IN1 4
20 MSMODE
6 OUT1
 +
NR BIAS
MS
PBFB2 31 19 DRSW
X1 MODE
5 GND
PBRIN2 32
TAPE/AUX
18 TAPESW
F2 222 ns
PBREF2 33
17 INSW
TAPE EQ
PBFIN2 34
16 NC
FWD/RVS
VCT 35
VCT
PBGND 36 VCC 15 NC
MS ON/
OFF
+
LPF
+
DETECT

IC611 BA3918-V2
PBFIN1 37 14 MSOUT
F3
F1
PBREF1 38
13 DGND
X1
PBRIN1 39
PBFB1 40
12 MSTC
REGULATOR
11 G1FB
T1
120µ/70µ
24dB
1 2 3 4 5 6 7 8 9 10
OVER VOLTAGE
PROTECT

+
IC331 LC75373ED
1 2 3 4 5 6 7 8 9 10 11 12
33 32 31 30 29 28 27 26 25 24 23
+

22 LFIN
+ 
+


+
+ 21 LFOUT

LSELO 34
L4 35 +
20 LROUT
L3 36  
+
L2 37 +
L1 38 
19 VREF
VDD 39
SHIFT
DECODER LATCH CONTROL 18 CE
REGISTER
17 DI

R1 40
16 CL
+
+
R2 41
  15 VSS
R3 42
+ 14 RROUT
R4 43
RSELO 44

+
+ 13 RFOUT


+

+

12 RFIN
+
1 2 3 4 5 6 7 8 9 10 11
 31   32 
PBEQ2
PBOUT2
GND
TAPEIN2
AUXIN2
DIREF
LINEOUT2
NC
NC
MSSW
CONTROL CIRCUIT
NC
NC
VCC
G2FB
PBEQ1
MSLPF
AUXIN1
PBOUT1
TAPEIN1
LINEOUT1
NC
FM
AM
STB
VCC
ANT
VDD
GND
AMP
COM
LSOUT
LVRIN
LCOM
LT1
LT2
LT3
LTOUT
LSIN
LS1
LS2
LS3
MODE2
MODE1
RT1
RT2
RT3
RS1
RS2
RS3
RSIN
RCOM
RVRIN
RTOUT
RSOUT

+

+



+
+
+
+

+