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– 21 –

Procedure:
1. Connect oscilloscope to test point TP (TEO) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “

P (Pause)” button.  (Becomes the 1 track jump

mode)

5. Check the level B of the oscilloscope’s waveform and the A

(DC voltage) of the center of the Traverse waveform.
Confirm the following:

1 track jump waveform

A – B

2 (A + B)  

×

 100 = ±7 (%)

BD board

TP (TEO)
TP (VC)

+
–

oscilloscope

Center of the waveform

B

level : 500 mV 

±

 100 mVp-p

symmetry

A (DC voltage)

0V

[BD  BOARD] (Conductor Side)

IC103

CNU102

IC101

IC
I02

RF

FOK

VC

FEO

TEO

GND

CNU101

– 22 –

•

µ

Pin No.

Pin Name

I/O

Function

1

TA-MUTE

O

Line muting on/off control signal output terminal    “L”: muting on

2

DBFB-H/L

O

DBFB normal/high selection signal output to the M62427FP (IC201)                                               
“L”: DBFB high, “H”: DBFB low

3

427-LAT

O

Serial data latch pulse output to the M62427FP (IC201)

4

K-CON-LAT

O

Serial data latch pulse output terminal    Not used (open)

5

K-CON-ON

O

On/off selection signal output of the key control circuit    “L”: on    Not used (open)

6

F-RELAY

O

Relay drive signal output for the speaker protect    “H”: on

7

R-RELAY

O

Relay drive signal output for the speaker protect    “H”: on    Not used (open)

8

PL-RELAY

O

Relay drive signal output for the speaker protect    “H”: on    Not used (open)

9

TEST

I

Test terminal    Connected to ground

10

X2

O

Main system clock output terminal (5 MHz)

11

X1

I

Main system clock input terminal (5 MHz)

12

VDD

—

Power supply terminal (+5V)

13

XT2

O

Sub system clock output terminal (32.768 kHz)

14

XT1

I

Sub system clock input terminal (32.768 kHz)

15

RESET

I

System reset signal input from the reset signal generator (IC302)    “L”: reset                                   
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

16

(INT/IN)

I

Connected to ground

17

(INT/IN/OUT)

I

Connected to ground

18

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2519Q (IC103)

19

SOFT-TEST

O

Output terminal for the software test (open)

20

AC-CUT

I

AC off detection signal input from the reset signal generator (IC302)

21

RDS-INT

I

Serial data reading clock signal input for the radio data system    Not used (fixed at “L”)

22

RDS-DATA

I

Serial data input for the radio data system    Not used (open)

23

VDD

—

Power supply terminal (+5V)

24

AVDD

—

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

25

ADJ

I

Setting terminal for the CD test mode    Normally: fixed at “H”

26

A-SHUT

I

Shut off detection signal input from the deck-A side reel pulse detector (Q1001)

27

B-SHUT

I

  Shut off detection signal input from the deck-B side reel pulse detector (Q1002)

28

B-HALF

I

Detection input from the deck-B half detect switch (S1006)

29

CLK-CHECK

I

Not used (fixed at “L”)

30

SPEC-IN

I

Setting terminal for the version

31

ADJ2

I

Setting terminal for the CD test mode    Normally: “L”

32

DEMO-MODE

I

Setting terminal for the demonstration H/L   Fixed at “L”

33

AVSS

—

Ground terminal (for A/D conversion)

34

SQ-DATA-IN

I

Sub-code Q data input from the CXD2519Q (IC103)

35

NCO

O

Not used (open)

36

SQ-CLK

O

Sub-code Q data reading clock signal output to the CXD2519Q (IC103)

37

SW-ON/OFF

O

Super woofer speaker on/off control signal output terminal    Not used (open)

38

FUNC1

I

Setting terminal for the function 1    Fixed at “L”

39

FUNC2

I

Setting terminal for the function 2    Fixed at “L”

40

VSS

—

Ground terminal

41

VOL-LAT

O

Serial data latch pulse output terminal    Not used (open)

42

PL-LAT

O

Serial data latch pulse output terminal    Not used (open)

43

COM-DIN

I

Serial data input terminal    Not used (fixed at “L”)

– 23 –

Pin No.

Pin Name

I/O

Function

44

COM-DOUT

O

Serial data output to the M62427FP (IC201)

45

COM-CLK

O

Serial data transfer clock signal output to the M62427FP (IC201)

46

CD-POWER

O

Power on/off control signal output for the CD mechanism deck section
“H”: power on, “L”: standby

47

CD-DATA

O

Serial data output to the CXD2519Q (IC103)

48

CD-CLK

O

Serial data transfer clock signal output to the CXD2519Q (IC103)

49

MSM-CND

O

Command data output terminal    Not used (open)

50

MSM-BUSY

I

Busy signal input terminal    “L”: busy status    Not used (fixed at “L”)

51

MSM-LAT

O

Serial data latch pulse output terminal    Not used (open)

52

MSM-NAR

O

NAR signal output terminal    Not used (open)

53

MSM-CH

O

Channel select signal output terminal    Not used (open)

54

INPUT-

CHANGE

O

Attenuate control (–5 dB) signal output for the input gain control
“L”: VIDEO, “H”: MD

55

IIC-DATA

I/O

Communication data bus with the fluorescent indicator tube driver (IC601)

56

IIC-CLK

I/O

Communication data reading clock signal input or transfer clock signal output with the fluo-
rescent indicator tube driver (IC601)

57

XRST

O

Reset signal output to the CXA1992AR (IC101), BA5941FP (IC102) and CXD2519Q (IC103) on
the CD mechanism deck section    “L”: reset

58

XLT

O

Serial data latch pulse output to the CXD2519Q (IC103)

59

WDCL

O

Word clock signal output terminal    Not used (open)

60

TBL-L

O

Motor drive signal output to the disc tray turn motor driver (IC201)    *1

61

TBL-R

O

Motor drive signal output to the disc tray turn motor driver (IC201)    *1

62

TRAY-LED

O

LED drive signal output for the CD tray LED indicate    “H”: LED on

63

LOAD-OUT

O

Motor drive signal output terminal    Not used (open)

64

LOAD-IN

O

Motor drive signal output terminal    Not used (open)

65

ST-CLK

O

PLL serial data transfer clock signal output to the FM/AM tuner unit

66

ST-DIN

I

PLL serial data input from the FM/AM tuner unit

67

ST-DOUT

O

PLL serial data output to the FM/AM tuner unit

68

ST-CE

O

PLL chip enable signal output to the FM/AM tuner unit

69

TUNED

I

Tuning detection signal input from the FM/AM tuner unit    “L”: tuned

70

STEREO

I

FM stereo detection signal input from the FM/AM tuner unit    “L”: stereo

71

VSS

—

Ground terminal

72

ST-MUTE

O

Tuner muting control signal output to the FM/AM tuner unit    “L”: muting on

73

SENS2

I

Internal status (SENSE) signal input from the CXA1992AR (IC101)

74

SENS

I

Internal status (SENSE) signal input from the CXD2519Q (IC103)

75

DISC-SENS

I

Disc status detection signal input terminal    Not used (open)

76

T-SENS

I

Disc tray status detection signal input from the disc tray sensor (IC202)

77

UP SW

I

Detection input from the UP switch (S201)

78

ENC3

I

79

ENC2

I

Rotary encoder pulse input for the disc tray address detect    Not used (open)

80

ENC1

I

81

OUT-OPEN

I

Disc tray open/close detect switch input terminal    “L”: open, “H”: close    Not used (open)

82

CAP-H/N

O

High/normal speed selection signal output of the capstan motor (M1)
“L”: high speed, “H”: normal speed

83

A-TRG

O

Motor drive signal output to the trigger motor driver (IC1502)

84

B-TRG

O

Motor drive signal output to the trigger motor driver (IC1502)

85

TRG-LOW

O

Motor control signal output to the trigger motor driver (IC1502)

– 24 –

*1  Disc tray turn motor (M201) control

TBL-L (pin ^º)

“H”

“L”

“H”

“L”

TBL-R (pin ^¡)

“H”

“H”

“L”

“L”

Terminal

STOP

COUNTER-

CLOCKWISE

CLOCKWISE

BRAKE

Mode

Pin No.

Pin Name

I/O

Function

86

CAP-M-ON/OFF

O

Capstan motor (M1) on/off control signal output terminal    “L”: capstan motor on

87

PB-A/B

O

Deck-A/B selection signal output to the HA12203NT (IC1501)    “L”: deck-A, “H”: deck-B

88

EQ-H/N

O

Normal/high speed selection signal output to the HA12203NT (IC1501)
“L”: normal speed, “H”: high speed

89

BIAS

O

Recording bias on/off selection signal output to the HA12203NT (IC1501)
“L”: bias off, “H”: bias on

90

REC-MUTE

O

Recording muting on/off selection signal output to the HA12203NT (IC1501)
“L”: muting on, “H”: muting off

91

NR-ON/OFF

O

Dolby NR on/off selection signal output to the HA12203NT (IC1501)
“L”: dolby off, “H”: dolby on

92

R/P-PASS

O

Recording/playback/pass selection signal output to the HA12203NT (IC1501)
“L”: recording mode

93

TC-MUTE

O

Line muting on/off selection signal output to the HA12203NT (IC1501)
“L”: muting off, “H”: muting on

94

A-PLAY-SW

I

Detection input from the deck- A play detect switch (S1001)    “H”: deck-A play

95

B-PLAY-SW

I

Detection input from the deck- B play detect switch (S1002)    “H”: deck-B play

96

RELAY

O

Recording/playback select signal output to the REC/PB switch (IC602)
“L”: playback, “H”: recording

97

A-HALF

I

Detection input from the deck-A cassette detect switch (S1003)
“L”: cassette in, “H”: no cassette

98

POWER

O

Power on/off control signal output for the audio system (+5V) and deck, panel, audio system
(+7V and –7V)    “L”: power on, “H”: standby

99

SW-F-CON

O

Super woofer mode control signal output to the M62427FP (IC201)    “H”: music, “L”: movie

100

STK-MUTE

O

Power amplifier on/off selection signal output terminal    “L”: on, “H”: standby