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— 17 —

— Component Side —

Procedure:
1. Connect test point TP701 (ADJ) on Main board to Ground with a

lead wire.

2. Connect oscilloscpe to test point TP (TEO).
3. Turned Power switch on.
4. Put disc (YEDS-18) in and playback.
5. Confirm that the oscilloscope waveform is symmetrical on the

top and bottom in relation to 0Vdc, and check this level.

Specified level: •                     x 100 = less than 

±

 7%

• A + B = 300 

±

 100 mVp-p

6. Remove the lead wire connected in step 1.

This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment.
Please note that it should be fixed to mechanical center position when
you moved and do not know original position.

A – B

2 (A + B)

— Conductor Side —

±

— 18 —

p A)

p A
MOTOR board

p A is including in MD board.

— 81 —

Pin Name

I/O

Function

1

2 to 9

10

11

12

13

14

15

16

17, 18

19

20

21

22

23

24

25

26 to 29

30 to 33

34

35

36

37

38

39

40

41

42

43 to 45

46

47 to 50

51 to 53

54 to 78

79

80 to 86

87 to 100

–

O

I

O

I

–

I

I

–

O

O

I

O

I

O

I

–

I

I

–

–

I

I

I

I

–

O

O

O

–

O

O

O

–

O

O

+5V

LED drive signal output.

Reset signal input.

Ground

Not used. (Open)

AMS encoder signal input.

+5V

LED drive signal output.

Key select control. (Not used) (Open)

Volume encoder signal input.

Request signal from/to master control.

Serial clock input from master control.

Serial data output to master control.

Serial data input from master control.

Ground

Spectram analizer signal input.

Key matrix input.

Volume encoder signal input.

AMS encoder signal input.

Ready signal from master control.

SIRCS signal input.

Ground

LED drive signal output.

LED select signal output.

LED drive signal output.

+5V

Not used.

LED drive signal output.

Fluorescent indicator tube segment signal output.

–25V for Fluorescent indicator tube

Fluorescent indicator tube segment signal output.

Fluorescent indicator tube grid signal output.

Pin No.

V

DD

LED8-1

RESET

X2

X1

IC (Vpp)

XT2

JOG B

V

DD

LED10, 9

KEY SEL

VOL B

REQ. GM

CLK MG

DATA GM

DATA MG

AV

SS

SPEANA 4–1

KEY 4–1

AV

DD

AV

REF

VOL A

JOG A

RDY MG

SIRCS

V

SS

LED 15

LED SELECT

LED13–11

V

DD

LEDS7–4

LEDS3–1

SEG32–8

V, LOAD

SEG7–1

GR14–1

X’ tal (5 MHz).

 +5V

— 82 —

Pin No.

Pin Name

I/O

Function

Ground

Reset signal input.

Ground

Back up signal input.

Not used. (Pull up)

Mute signal output for tuner.

Not used. (Open)

Disc table up detect. (Not used) (Pull up)

Loading in detection signal input. (Not used) (Connected to ground)

–

O

I

I

O

I

–

I

O

O

I

I

I

I

I

I

I

I

I

I

O

O

O

O

I

I

I

I

O

I

O

O

I

I

O

I

O

O

I

O

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

Loading out detection signal input.

Sub-code sync signal input.

CD Table sensor signal input.

RDS data start input.

RDS data start output.

Latch signal for digital filter.

Table sence signal input.

Reset signal output for CD.

Ready signal to graphic control.

Test mode input.

Request signal from graphic control.

Clock signal to graphic control.

Data input from graphic control.

Data output to graphic control.

Clock output. Serial bus line.

Test mode input.

Data output. Serial bus line.

V

SS

XOUT

XIN

RESET

XOUT

XIN

GND (test)

AC CUT

SUPER WOOFER ON

ST-MUTE ON

180-A-PLAY

180-B-PLAY

180-B-REC

V DET

UP-SW

TRAY-CLOSE (ICD)

ENCODER-0

ENCODER-1

ENCODER-2

OUT SW OPEN

LOAD IN

LOAD OUT

TBL-L

TBL-R

SCOR

TBL-SENS

RDS INT

RDS DATA

DF LAT

SENS

XRST

MG-RDY

ADJ

GM-REQ

MG-CLK

GM-DATA

MG-DATA

CD-CLK

ADJ-2

CD-DATA

X’tal (10 MHz).

X’tal for clock (32.768 MHz).

Tape detection signal input. (Not used) (Connected to ground)

Disctray address detect encoder input.

Loading motor control signal output.

Table motor control signal output.