Sony XR-4803 IC Block Diagrams Main Board IC301 CXA2509AQ-T4, IC331 LC75373ED, IC351

• IC Block Diagrams – MAIN Board –

IC301

CXA2509AQ-T4

PBEQ2

PBOUT2

GND

TAPEIN2

AUXIN2

DIREF

LINEOUT2

NC

NC

MSSW

30

29

28

27

26

25

24

23

22

21

120∝/70∝

24dB

T2

+

–

–

+

20

MSMODE

NR BIAS

PBFB2

31

X1

MS

19

DRSW

MODE

PBRIN2

32

TAPE/AUX

18

TAPESW

PBREF2

33

F2

17

INSW

TAPE EQ

PBFIN2

34

FWD/RVS

16

NC

VCT

35

VCT

PBGND

36

VCC

MS ON/

15

NC

+

LPF

+

OFF

DETECT

–

PBFIN1

37

14

MSOUT

PBREF1

38

F1

F3

X1

13

DGND

PBRIN1

39

PBFB1

40

12

MSTC

–

+

+

–

11

G1FB

T1

120∝/70∝

24dB

1

2

3

4

5

6

7

8

9

10

PBEQ1

PBOUT1

VCC

TAPEIN1

AUXIN1

MSLPF

LINEOUT1

NC

NC

G2FB

IC331

LC75373ED

LVRIN

LCOM

LT1

LT2

LT3

LTOUT

LSIN

LS1

LS2

LS3

LSOUT

33

32

31 30

29

28 27 26

25 24

23

+

IC351		MM1322XFBE
GND	1
			8	OUT2
		CIRCUIT	7	VS
IN2	2
VCC	3	CONTROL
IN1	4		6	OUT1
			5	GND

+	–	–
–		+
		–
		+
LSELO 34

+

–

22 LFIN

21 LFOUT

L4	35
L3	36		–
L2	37	+	+
L1	38	–	+
			–

+

–

20 LROUT

VDD	39				+						SHIFT
								DECODER	LATCH
					–						REGISTER
R1	40	–
R2	41	+						+
R3	42							–
R4	43
RSELO	44
						+
	–					–		+
			–
	+
								–
			+
	1	2	3	4	5	6	7	8	9	10	11
	RVRIN	RCOM	RT1	RT2	RT3	RTOUT	RSIN	RS1	RS2	RS3	RSOUT

		19	VREF
CONTROL		18	CE
		17	DI
		16	CL
	–	15	VSS
		14	RROUT
	+
	–	13	RFOUT
	+
		12	RFIN

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