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9

Procedure:
1. Set to standby state.
2. Press three buttons of  s  , ?/1  , and  7  simultaneously.
3. Liquid crystal display and LED are all turned on.
4. Pless  Z  to enter the version display mode.
5. Press 7  to enter the KEY, VOL, check mode. ( l j

and  J L  must be pressed for several seconds.)

6. To exit from this mode, press the buttons in the same way as

step 2.

[Aging Mode]
This mode can be used for operation check of CD section.

Procedure:
1. Load a CD disc.
2. Set to standby state.
3. Press three buttons of  s  ,  DISPLAY  , and  7  simultaneously.
4. The aging is executed in bellow sequence.
5. To exit from the aging mode, press the ?/1 button to turn the

power OFF.

[Cold Reset]
Clears all the memories and starts up the machine again.

Procedure:
1. Set to standby state.
2. Press three buttons of  s  ,  ?/1 , and FUNCTION simultaneously.

[Hot Reset]
Starts up the machine again holding the memory data.

Procedure:
1. Set to standby state.
2. Press three buttons of  s  ,  ?/1 , and FUNCTION simultaneously.

10

Note :

1. CD Block is basically designed to operate without adjustment.

Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M

Ω

 impedance.

4. Clean the object lens by an applicator with neutral detergent

when the signal level is low than specified value with the
following checks.

Procedure :
1. Connect oscilloscope to TP (FEO).
2. Connect between TP (FEI) and TP (VC) by lead wire.
3. Connect between TP (AGCCON) and TP (DGND) by lead wire.
4. Turn Power switch on.
5. Load a disc (YEDS-18) and actuate the focus search. (In

consequence of open and close the disc tray, actuate the focus
search)

6. Confirm that the oscilloscope waveform (S-curve) is

symmetrical between A and B. And confirm peak to peak level
within 4 ±1 Vp-p.

7. After check, remove the lead wire connected in step 2 and 3.

Note : • Try to measure several times to make sure than the ratio

of A : B or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the

brightness to obtain best waveform.

Procedure :
1. Connect oscilloscope to TP (RF).
2. Connect between TP (AGCCON) and TP (DGND) by lead wire.
3. Turned Power switch on.
4. Load a disc (YEDS-18) and playback.
5. Confirm that oscilloscope waveform is clear and check RF signal

level is correct or not.

6. After check, remove the lead wire connected in step 2.

±

Note : Clear RF signal waveform means that the shape “ 

◊

 ” can be clearly

distinguished at the center of the waveform.

Procedure :
1. Connect oscilloscope to TP (TEO) and TP (VC).
2. Turned Power switch on.
3. Load a disc (YEDS-18) and playback the number five track.
4. Press the  X  button. (Becomes the 1 track jump mode.)
5. Confirm that the level B and A (DC voltage) on the oscilloscope

waveform.

6. After check, remove the lead wire connected in step 1.

[BD BOARD] (Conductor Side)

±

±

Specified level: –– 

×

 100 = less than 

±

 22 %

B

A

TP

(XPCK)

TP

(TEO)

TP

(FEO)

TP

(FEI)

TP

(RF)

TP

(VC)

TP

(DGND)

TP

(AGCCON)

1

12

24

1

20

21

40

60

80

41

61

IC101

IC103

11

11

Note on Printed Wiring Board:
• X : parts extracted from the component side.
•

f

: internal component.

• b : Pattern from the side which enables seeing.

Caution:
Pattern face side:

Parts on the pattern face side seen from

(Side B)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Side A)

the parts face are indicated.

Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF

50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in 

Ω

 and 

1

/

4

 

W or less unless otherwise

specified.

•

f

: internal component.

• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.

• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-
tion tolerances.

• Circled numbers refer to waveforms.
• Signal path.

F

: TUNER (FM/AM)

J

: CD PLAY (ANALOG OUT)

c

: CD PLAY (DIGITAL OUT)

• Abbreviation

CND : Canadian model.
AUS

: Australian model.

SP

: Singapore model.

MY

: Malaysia model.

AR

: Argentine model.

AED

: North European model.

MX

: Mexican model.

KR

: Korean model.

EE

: East European model.

HK

: Hong Kong model.

TW

: Taiwan model.

CH

: Chinese model.

• Indication of transisitor.

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

Q

B

These are omitted.

C

E

Q

The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.

Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.

6.4Vp-p

16.9344MHz

1.2Vp-p

400nsec/div

approx 200mVp-p

approx 170mVp-p

3.0Vp-p

32.768kHz

3.4Vp-p

16MHz

BACK  PANEL board

LED board

PANEL board

H.P. board

LOADING board

BD board

MAIN board

TUNER (FM/AM) UNIT

12

12

• See page 11 for Circuit Boards Location.

IC101

C-2

IC102

C-3

IC103

B-2

Q101

A-3

TP

(VC)

TP

(RF)

TP(TE0)

TP(FE0)

TP(FE1)

TP(D GND)

TP(AGC CON)

TP

(XPCK)

(Page 14)

• 

 : Uses unleaded solder.