Sony XR-C440 service manual IC301 CXA2510AQ-T4 IC701 BA8270F-E2, IC671 BA3918-V2

IC301

CXA2510AQ-T4

IC701

BA8270F-E2

PBEQ1

PBOUT1

GND

TAPEIN1

AUXIN1

DIREF

LINEOUT1

TCH1

NC

MSSW

BUS ON

1

BUS ON

14

VCC

30

29

28

27

26

25

24

23

22

21

SWITCH

120∝ /

NR

RST

2

RESET

13

RST

SWITCH

70∝

12

BUS ON

T2

OFF/B

+

–

11

CLK IN

BATT

BATTERY

20

MSMODE

3

10

BU IN

–

+

SWITCH

NR BIAS

PBFB1

31

X1

MS

19

DRSW

MODE

PBRIN1

32

CLK

4

TAPE/AUX

18

TAPESW

VREF

5

PBREF1

33

F2

17

INSW

DATA

6

9

DATA IN

TAPE EQ

PBFIN1

34

NR

16

NRSW

GND

7

8

DATA OUT

FWD/RVS

MODE

VCT

35

VCT

PBGND

36

VCC

MS ON/ 15

NC

+

LPF

+

OFF

DETECT

–

PBFIN2

37

14

MSOUT

PBREF2

38

F1

F3

X1

13

DGND

PBRIN2

39

PBFB2

40

12

MSTC

–

+

+

–

11

FF

T1

OFF/B

120∝ /

NR

70∝

1

2

3

4

5

6

7

8

9

10

PBEQ2

PBOUT2

VCC

TAPEIN2

AUXIN2

MSLPF

LINEOUT2

TCH2

NC

PLAY

IC671

BA3918-V2

REGULATOR

OVER VOLTAGE

PROTECT

–

–

–

–

+

+

+

+

1

2

3

4

5

6

7

8

9

10

11

12

NC

MODE2

MODE1

STB

VDD

AMP

VCC

ANT

COM

AM

FM

GND

– 38 –