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– 21 –

– SET UPPER VIEW –

RV1  MW Auto Scan/Stop Level Adjustment

RV2  FM Auto Scan/Stop Level Adjustment

Tape Speed Adjustment

IC401

TU1

TP101
(DOLBY-L)

TP201
(DOLBY-R)

TP402

(PLT)

TP401

(VCO)

RV221 (R-CH)
RV121 (L-CH)

RV402
FM Polar VCO Adjustment

L401
RV401







FM Polar Pilot Adjustment

TU1







DOLBY Level Adjustment

RV4  FM Stereo Separation Adjustment

[MAIN BOARD] (CONDUCTOR SIDE)

– 22 –

1

DSEL1

I

Destination setting terminal (fixed at center voltage)

2

RCIN0

I

Rotary remote commander shift key A/D input terminal

3

SD_IN

I

Station detector detect input from the FM/AM tuner unit (TU1)
Stop level for SEEK, BTM, etc. is determined    SD is present at input of “H”

4

AVSS

—

Ground terminal (for A/D converter)

5

ST

I/O

Input of FM stereo detection signal from FM/AM tuner unit (TU1), and output of forced monaural
control signal to FM/AM tuner unit (TU1) (Commonly used for stereo display input and forced
monaural output)  FM stereo detection at input of “L”, forced monaural at output of “L”

6

PLL-CE

O

PLL serial chip enable output to the FM/AM PLL (IC31)

7

AVREF

I

Reference voltage (+5V) input terminal (for D/A converter)

8

PLLSI

I

PLL serial data input from the FM/AM PLL (IC31)

9

PLLSO

O

PLL serial data output to the FM/AM PLL (IC31)

10

PLLCKO

O

PLL serial data transfer clock signal output to the FM/AM PLL (IC31)

11

P-ST.IN

I

Polar stereo signal input from the polar multiplexer (IC401)

12

LCDSO

O

Serial data output to the liquid crystal display driver (IC901)

13

LCDCKO

O

Serial data transfer clock signal output to the liquid crystal display driver (IC901)

14

LCD-CE

O

Chip enable output to the liquid crystal display driver (IC901)

15

LCD-INH

O

Blank indicate control signal output to the liquid crystal display driver (IC901)   “L”: no display

16

UNI-SI

I

Serial data input from the bus interface (IC571) (for SONY bus)

17

UNI-SO

O

Serial data output to the bus interface (IC571) (for SONY bus)

18

UNI-CKI

I

Serial data reading clock signal input terminal

19

UNI-CKO

O

Serial data transfer clock signal output to the bus interface (IC571) (for SONY bus)

20

BUS-ON

O

Bus on/off control signal output to the bus interface (IC571) (for SONY bus)    “L”: bus on

21

SYS-RST

O

Reset signal output to the bus interface (IC571) (for SONY bus)    “L”: reset

22

AMPON

O

Standby control signal output to the power amplifier (IC471)

23

AMP-MUTE

O

Muting control signal output to the power amplifier (IC471)

24

TUN-ON

O

Tuner system power supply on/off control signal output to the BA3918 (IC601)    “H”: tuner on

25

FM-ON

O

FM system power supply on/off control signal output to the BA3918 (IC601)    “H”: FM on

26

PW-ON

O

Main system power supply on/off control signal output to the BA3918 (IC601)    “H”: power on

27

COLOR

I

Input terminal to set whether the illumination color change function is present or not
“L”: illumination color change function is present (fixed at “L”)

28

AMS_ON

O

Tape auto music sensor control signal output to the CXA2510Q (IC101)
“L” is output to lower the gain for audio level at FF/REW

29

REL

I

Reel table rotation detect signal input from the take-up and supply reel sensor

30

MTLIN

I

Input terminal to set whether the auto metal function is present or not
“L”: auto metal function is present

31

POS3

I

Tape position detect input from the tape operation switch (S901)

32

POS2

I

33

GND

—

Ground terminal

34

POS0

I

Tape position detect input from the tape operation switch (S901)

35

POS1

I

– 23 –

36

LM_LOD

O

Loading/tape operation motor (M902) control signal output to the MM1322XF (IC651)
(For the loading direction and forward side operation)  *1

37

LM_EJ

O

Loading/tape operation motor (M902) control signal output to the MM1322XF (IC651)
(For the eject direction and reverse side operation)  *1

38

N/R_OUT

O

Forward/reverse direction control signal output to the CXA2510Q (IC101)
“L”: forward direction, “H”: reverse direction

39

NC

I

Not used (open)

40

CMON

O

Capstan/reel motor (M901) drive signal output terminal    “H”: motor on

41

TAPEON

O

Tape system power supply on/off control signal output terminal    “H”: tape on

42

COL_SEL

I

Setting terminal for the illumination color    “L”: amber, “H”: green (fixed at “H”)

43

RCIN1

I

Rotary remote commander shift key A/D input terminal

44

TEST

I

Setting terminal for the test mode    “L”: test mode (normally fixed at “H”)

45

ILL-ON

O

Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC901)    “H”: power on

46

BEEP

O

Beep sound output terminal

47

MUTE

O

Muting control signal output terminal    “H”: mute on

48

VOLCE

O

Chip enable output to the electrical volume (IC301)

49

SUBCE

O

Chip enable output terminal    Not used this set (open)

50

VOLCKO

O

Serial data transfer clock signal output to the electrical volume (IC301)

51

SUBCKO

O

Serial data transfer clock signal output terminal    Not used this set (open)

52

VOLSO

O

Serial data output to the electrical volume (IC301)

53

TAPMUT

O

Tape mute on/off control signal output to the CXA2510Q (IC101)    “H”: tape mute on

54

DOLON

O

Dolby on/off control signal output to the CXA2510Q (IC101)    “H”: dolby on

55

DOLBC

I

Setting terminal for dolby type
“L”: dolby B and C type, “H”: dolby B type only (fixed at “H”)”

56

AMSIN

I

Whether a music is present or not from CXA2510Q (IC101) is detected at auto music sensor
“L”: music is present, “H”: music is not present

57

MTL-SEL

O

Tape metal position control signal output to the CXA2510Q (IC101)    “H”: metal on

58

AD_ON

O

Power supply on/off control signal output for the A/D converter    “L”: power on

59

RAMBU

I

Internal RAM reset detection signal input     Input terminal to check that RAM data are not destroyed
due to low voltage    This checking is made within 100msec after reset

60

RESET

I

System reset signal input
“L” is input for several 100msec after power on, then it changes to “H”

61

SIRCS

I

Sircs signal input terminal    Not used this set (fixed at “H”)

62

BUIN

I

Battery detect signal input terminal    “H”: battery on

63

PW-SEL

I

Power select switch input terminal    “L”: off (halt mode), “H”: on (operation mode)

64

ACCIN

I

Accessory detect signal input terminal    “L”: accessory on

65

NOSESW

I

Detects the removal of the attaching and removing type front panel block    “L”: attaching

66

TELMUTE

I

Telephone mute signal input terminal    At input of “L”, the signal is attenuated by –20dB

67

KEYACK

I

Input of acknowledge signal for the key entry    Acknowledge signal is input to accept function and
eject keys in the power off status    On at input of “L”

68

VDD

—

Power supply terminal (+5V)

69

X_OUT

O

Main system clock output terminal (5MHz)

70

X_IN

I

Main system clock input terminal (5MHz)

71

GND

—

Ground terminal

– 24 –

72

XT_OUT

O

Sub system clock output terminal     Not used this set (open)

73

XT_IN

I

Sub system clock input terminal     Not used this set (fixed at “L”)

74

AVDD

—

Power supply terminal (+5V) (for A/D converter)

75

AVREF

I

Reference voltage input terminal (+5V) (for A/D converter)

76

KEYIN

I

Key input terminal (A/D input)

77

KEYIN1

I

Key input terminal (A/D input)

78

D-BASS

I

D-BASS switch (SW970) input (A/D input)

79

VSM

I

FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1)

80

DSEL0

I

Setting terminal for the key

*1  motor control

MODE STOP

LOADING/

EJECT/

BRAKE

TERMINAL

FORWARD

REVERSE

LM_LOD (pin#§)

“L”

“H”

“L”

“H”

LM_EJ (pin#¶)

“L”

“L”

“H”

“H”