SRF-M97 - Sony Audio Service Manual (repair manual). Page 13

13

•

1 to 4

COM1 to COM4

O

Common drive signal output to the liquid crystal display

5 to 16

S1 to S12

O

Segment drive signal output to the liquid crystal display

17

SIMUKE1

I

Setting terminal for the destination
"L": Except US, Panama and Tourist models, "H": US, Panama and Tourist models

18

SIMUKE2

I

Setting terminal for the destination
"L": Except US and Panama models, "H": US  and Panama models

19, 20

P9-0, P9-1

I

Not used

21, 22

KS1, KS2

O

Key source signal output to the key matrix

23 to 25

KR1 to KR3

I

Key return signal input from the key matrix

26

HOLD SW

I

HOLD switch input terminal   "L": hold on

27

VDD

-

Power supply terminal (+1.5V)

28

BEEP

O

Beep signal output terminal

29

MONO/ST

O

Mono/stereo selection signal output terminal     "L": stereo, "H": mono

30

AM BAND

O

AM band selection signal output terminal    "H": AM

31

DDCON

O

DC/DC converter on/off control signal output terminal    "L": DC/DC converter on

32

BAND2

O

Band selection signal output terminal     "L": FM, "H": AM

33

TEST

I

Test mode control signal input terminal    Not used

34

INT2

I

Battery detection signal input terminal
"L": battery mark residual quantity less display lights up

35

INT1

I

1.0V voltage detection signal input terminal
"L": battery mark residual quantity less display lights up

36

IF IN2

I

IF pulse signal input terminal    Not used

37

GND

-

Ground terminal

38

OSC IN

I

VCO input from the FM/AM front-end

39

VDD

-

Power supply terminal (+1.5V)

40

D0

O

Phase comparator output terminal

41

VREG

-

Constant voltage power supply output terminal for the phase comparator (+1.5V)

42 to 45

P3-0 to  P3-3

I

Not used

46 to 49

P5-0 to P5-3

I

Not used

50

MUTE

O

Muting on/off control signal output to the headphone power amplifier     "L": muting on

51

POWER ON

O

Power supply on/off control signal output terminal    "L": power on

52

BAND1

O

Band selection signal output terminal    "L": AM, "H": FM

53

AMP ON

O

Audio amplifier on/off control signal output to the headphone power amplifier
"H": Audio amplifier on

54

RESET

I

System reset signal input from the reset signal generator    "L": reset    For several
hundreds msec. after the power supply rises, "L" is input, then it changes to "H"

55

XOUT

O

System clock output terminal (75 kHz)

56

XIN

I

System clock input terminal (75 kHz)

57

GND

-

Ground terminal

58

VDB

-

Terminal for power supply voltage pressure up

59, 60

C1, C2

-

Connection terminal of the capacitor for power supply voltage pressure up

61

VEE

-

Constant voltage power supply output terminal for the liquid crystal display drive  (+1.5V)

62, 63

C3, C4

-

Connection terminal of the capacitor for liquid crystal display drive voltage pressure up

64

VCLD

-

Liquid crystal display drive voltage power supply output terminal